Advanced Florida Building Code: Understanding the Florida Building Code- Energy- Internet

Lesson 1 THE FLORIDA BUILDING CODE- ENERGY: AN INTRODUCTION AND HISTORY Introduction: This course presents an overview of the Florida Building Code- Energy. Upon completion of this course, you will have an understanding of the, background, scope, general structure and permit requirements contained in the Florida Building Code- Energy. The Florida Building Code- Energy was contained in Chapter 13 of the Florida Building Code, Building volume and Chapter 11 of the Florida Building Code, Residential volume but now is its own volume. Upon completion of the course, participants will

• Understand the scope and history of the Florida Building Code- Energy and the present goals of the Florida Legislature.

• Know the major changes from the last code edition.

• Describe the requirements for permitting and inspections.

• Understand the differences between the residential and commercial applications of the energy code.

• Understand and apply the different methods of compliance

• Understand permit requirements as it pertains to the Florida Building Code- Energy

This course presents an overview of the Florida Building Code- Energy Upon completion of the course, participants will

• Understand the scope and history of the Florida Building Code- Energy and the present goals of the Florida Legislature.

• Know the major changes from the last code edition.

• Describe the requirements for permitting and inspections.

• Understand the differences between the residential and commercial applications of the energy code.

• Understand and apply the different methods of compliance

• Understand permit requirements as it pertains to the Florida Building Code- Energy

A brief History of the Florida Building Code- Energy In response to the Energy Policy and Conservation Act (Public Law 94-163), the 1977 Florida legislature passed two laws requiring local adoption of an energy code for certain building categories for which building permits were issued after March 15, 1979. The two laws enacted by the Florida legislature were the driving force behind the "Florida Thermal Efficiency Code" and the "Florida Lighting Efficiency Code," which were combined in 1980 as the Florida Energy Efficiency Code for Building Construction (FEECBC).

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Originally, this state law referenced minimum standards for construction to meet or exceed national standards such as those of ASHRAE/IES 90-1975. However, nationally recognized energy codes or standards such as ASHRAE standards were designed primarily for climates where heating, rather than cooling, is dominant. The FEECBC was developed to be climate-specific for Florida. The Florida legislature, through Chapter 81-226, Laws of Florida, and Chapter 553, Part VII, Florida Statutes, established the state energy code. The state must make any changes to the code through the Administrative Procedures Act process. The state energy code became effective on March 15, 1979, and was updated in 1980, 1982, 1984, 1986, 1989, 1991, 1993, 1997, 2001, 2004, 2006 and 2007. The Florida Building Commission is directed to adopt, revise, update, and maintain the Florida Building Code. The 1998 Florida Legislature amended Chapter 553, Florida Statutes, to create a single state building code that is enforced by local governments. The Florida Building Code is updated every three years and may be amended annually to incorporate interpretations and clarifications. The 2009 Florida Building Code is based on the family of International Codes; except the Florida Building Code- Energy and the Florida Accessibility Code. In the 2007 FBC, Chapter 13 of the of the Florida Building Code- Building and Chapter 11 of the Florida Building Code- Residential is the statewide uniform standard for energy efficiency in the thermal design and operation of all buildings in the state of Florida. As such, the energy code is uniform throughout the state and cannot be made more lenient or stringent by local government. In response to the Energy Policy and Conservation Act (Public Law 94-163), the 1977 Florida legislature passed two laws requiring local adoption of an energy code for certain building categories for which building permits were issued after March 15, 1979 Originally, this state law referenced minimum standards for construction to meet or exceed national standards such as those of ASHRAE/IES 90-1975 The state energy code became effective on March 15, 1979, and was updated in 1980, 1982, 1984, 1986, 1989, 1991, 1993, 1997, 2001, 2004, 2006 and 2007 Governor Christ’s Executive Order 2007-127 Governor Crist issued Executive Order 07-127 establishing actions to reduce greenhouse gas emissions within Florida, and impacting the energy performance requirements of the Florida Building Code. The Department of Community Affairs Secretary, Tom Pelham, attended the Florida Building Commission’s October 2007 meeting to detail the Governor’s requirements. Secretary Pelham reported that Governor Crist has committed his Administration to charting a new direction in energy policy in Florida. The Secretary stated that in Executive Order 07-127

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the Governor made two statements that require immediate attention:

“Global climate change is one of the most important issues facing the State of Florida this century” and, “Immediate actions are available and required to reduce emissions of greenhouse gases within Florida.”

The Executive Order directed the Department of Community Affairs and the Florida Building Commission to work together to revise the Florida Building Code for Building Construction to increase the energy performance of new construction in Florida by at least 15 percent. The Executive Order also directed the Department of Community Affairs to initiate rulemaking on Florida appliance efficiency standards, with the objective of increasing the efficiency of appliances by 15 percent. The 2007 Florida Building Code was complete and awaiting the effective date when the Governor’s executive order was issued, delaying the code until March 2009 allowing incorporation of these energy mandates. The Governor charged the Department of Community Affairs and the Florida Building Commission with accomplishing both of these tasks by January 2009. To accomplish this, the Florida Building Commission reviewed energy related code amendments adopted in the 2007 Florida Building Code to determine their cumulative level of increased efficiency. The Commission’s Energy Code Workgroup will develop recommendations regarding energy conservation measures for increasing efficiency requirements in the 2010 FBC by 20% as required by law. Governor Crist issued Executive Order 07-127 establishing actions to reduce greenhouse gas emissions within Florida The Executive Order directed the Department of Community Affairs and the Florida Building Commission to work together to revise the Florida Building Code for Building Construction to increase the energy performance of new construction in Florida by at least 15 percent The Executive Order also directed the Department of Community Affairs to initiate rulemaking on Florida appliance efficiency standards, with the objective of increasing the efficiency of appliances by 15 percent 2007 Energy Code/Florida Building Code The Florida Building Commission evaluated the Energy Code provisions of the Florida Energy Efficiency Code for Building Construction (Florida Energy Code) during the 2007 Florida Building Code update review. The Florida Building Commission conducted a special workgroup evaluation of the International Energy Conservation Code to determine whether to use the national model code in the Florida Building Code. They determined it is not sufficient for Florida’s climate and energy characteristics. Minor changes were made to the 2004 Florida Energy Code mainly to simplify its text organization consistent with the

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workgroup study recommendations for inclusion in the 2007 Florida Building Code. Energy Code provisions of the Florida Energy Efficiency Code for Building Construction (Florida Energy Code) during the 2007 Florida Building Code update review Minor changes were made to the 2004 Florida Energy Code mainly to simplify its text organization consistent with the workgroup study recommendations for inclusion in the 2007 Florida Building Code The Examination and Significant Changes The Commission funded research to evaluate the Florida Energy Code for a cost effective residential baseline, and for commercial energy code enhancements. The Commission also compared the Florida Energy Code to the International Energy Conservation Code (IECC), as well as ASHRAE 90.1 and 90.2. As the next step, the Department of Community Affairs developed recommendations for Energy Code amendments based on a cost effectiveness study of residential construction conducted by the Florida Solar Energy Center. Working with stakeholders using consensus-building workgroups, the Commission was able to achieve the 15% increase in energy efficiency in buildings and implement code amendments that are efficient, consistent, understandable and enforceable for the full spectrum of Energy Code users. In general, the approach to achieve the 15% overall level of increased efficiency was achieved by requiring a 10% to 15% increased efficiency for residential buildings and a 15% to 25% increased efficiency for light commercial buildings. The Florida Solar Energy Center delivered recommendations to the Department of Community Affairs which in turn developed the following recommendations:

Residential Buildings: The recommendation was to modify the baseline efficiency levels for building components that are used to establish the level of energy compliance. The baseline is not mandated across the board allowing the owner to determine which of 18 options is more cost effective or otherwise attractive to them. This approach allows consumers to make choices regarding achieving the required performance level without mandating specific provisions. Commercial Buildings: The recommendation was to use the current American Society of Heating Refrigeration and Air-conditioning Engineers (ASHRAE) design guides for small office buildings, small mercantile buildings, and schools to establish energy budgets that must be met for compliance. In addition, the recommendation was to adopt the current edition of the national engineering design standard, ASHRAE 90.1-2007, for other commercial

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occupancy buildings and to establish minimum glazing efficiency ratings. The Commission funded research to evaluate the Florida Energy Code for a cost effective residential baseline, and for commercial energy code enhancements In general, the approach to achieve the 15% overall level of increased efficiency was achieved by requiring a 10% to 15% increased efficiency for residential buildings and a 15% to 25% increased efficiency for light commercial buildings. Mandate to adopt the International Energy Conservation Code During its 2008 session the legislature in HB 697 required the Florida Building Commission to adopt the most current edition of the International Energy Conservation Code (IECC) as a foundation code; however, the IECC must be modified by the commission to maintain the efficiencies of the Florida Energy Efficiency Code for Building Construction. . Beginning in early 2009 the Commission’s Energy Code Workgroup worked with stakeholders on a comprehensive evaluation of options for achieving energy efficiency initiatives for the Florida Building Code including: mandated increases in energy efficiencies for subsequent editions of the Code, criteria for cost effectiveness test for increases in energy efficiency, studying energy conservation measures for replacement of air conditioning equipment, investigating humidity and moisture control problems for hot and humid climates and evaluating rainwater collection and reuse and waste water recycling techniques. The Workgroup finalized its recommendations in 2010 and delivered consensus-based recommendations to the Commission that were implemented through amendments to the Florida Energy Code as part of the 2010 Code Update process. The Code no longer requires Commission approval. During its 2008 session the legislature in HB 697 required the Florida Building Commission to adopt the most current edition of the International Energy Conservation Code Beginning in early 2009 the Commission’s Energy Code Workgroup worked with stakeholders on a comprehensive evaluation of options for achieving energy efficiency initiatives for the Florida Building Code The Code no longer requires Commission approval Significant Changes Compliance Methods The code still has two main compliance methods: PRESCRIPTIVE:

• Residential section 402 ‐‐Form 402

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• Residential will have an alternate Form 402 from a Florida specific

• ResCheck

• Commercial section 502—Form 502

• No EZ Com will be available

• Form 502 is only for shell buildings, renovations, changeouts PERFORMANCE:

• Residential computer printout—Form 405

• Commercial computer printout—Form 506 Bullets: The code still has two main compliance methods: PRESCRIPTIVE:

• Residential section 402 ‐‐Form 402

• Residential will have an alternate Form 402 from a Florida specific

• ResCheck

• Commercial section 502—Form 502

• No EZ Com will be available

• Form 502 is only for shell buildings, renovations, changeouts PERFORMANCE:

• Residential computer printout—Form 405

• Commercial computer printout—Form 506 Reorganization of the Code The Florida Building Code is based on the IECC, so format is the same as the International.

Chapter Title

1 Administration

2 Definitions

3 Design Criteria

4 Residential Energy Efficiency

5 Commercial Energy Efficiency

6 Referenced Standards

Appendix A Jurisdictional Data

Appendix B Criteria for Computer Modeling

Appendix C Forms

The Florida Building Code is based on the IECC, so format is the same as the International. Reorganization of the Code Computer programs that are allowed to be used for code compliance are no longer referenced by the code.

• Programs will be approved separately by the Florida Building Commission

• They must utilize the Standard Reference Design (baselines) and other criteria from Normative Appendix B and demonstrate validity to the

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Commission.

• They must print out in a format familiar to the building departments inspecting for code compliance. Limited/special use buildings; alternate materials & methods

• Programs will be approved separately by the Florida Building Commission

• They must utilize the Standard Reference Design (baselines) and other criteria from Normative Appendix B and demonstrate validity to the Commission.

• They must print out in a format familiar to the building departments inspecting for code compliance. Limited/special use buildings; alternate materials & methods

The software approved by the Commission so far is:

Residential Buildings (3stories or less)

Software name

Vendor Date Approved

EnergyGauge USA 3.0 Florida Solar Energy Center 3-12-2012

Access: www.energygauge.com

Commercial and high-rise residential buildings

Software name Vendor Date Approved

Energy Gauge Summit 4.00 Florida Solar Energy Center 1-31-2012

Access: www.energygauge.com

And of Course REScheck and COMcheck for Florida (uses Energy Gauge for commercial)

http://www.energycodes.gov/states/state_info.php?stateAB=FL

http://www.fsec.ucf.edu/en/publications/pdf/FSEC-CR-1806.pdf#17"

Exemptions Buildings determined by the code official to have a limited energy use or special use requirement may have code requirements adjusted by the code official where nationally recognized energy analysis procedures are used to demonstrate that the building would use less energy than a code compliant building.

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The Code official may approve alternate materials & methods where a nationally recognized energy analysis procedure is used to demonstrate that a building or component will use less energy than a code compliant building or component. Buildings determined by the code official to have a limited energy use or special use requirement may have code requirements adjusted by the code official The Code official may approve alternate materials & methods Replacement

The replacement of HVAC equipment mix‐matched criteria remain unchanged. Equipment sizing is no longer exempted for existing buildings. Existing equipment does not have to meet minimum code efficiencies; But have to be returned to the conditions of its listing. With the total replacement of HVAC evaporators and condensing units, all accessible (≥30 inches clearance) joints & seams in the air distribution system have to be inspected and sealed where needed using reinforced mastic or code approved equivalent Signed certification by the contractor attached to air handler Exceptions:

1. Ducts in conditioned space 2. Joints or seams that are already sealed with fabric & mastic 3. If system is tested and repaired as necessary.

• Equipment sizing is no longer exempted for existing buildings.

• Existing equipment does not have to meet minimum code efficiencies; But have to be returned to the conditions of its listing.

• With the total replacement of HVAC evaporators and condensing units, all accessible (≥30 inches clearance) joints & seams in the air distribution system have to be inspected and sealed where needed using reinforced mastic or code approved equivalent

• Signed certification by the contractor attached to air handler Residential: There are new requirements related to Air infiltration, Conducting a Blower door

test or follow a checklist for inspection, Recessed lights have to be e IC‐rated and labeled to meet ASTM E 283, Window limits, Prescriptive and performance compliance: maximums changed ,Ducts, Programmable thermostat required for forced air systems, Lighting: must have 50% high efficacy lamps.

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For Residential Swimming Pools, Gas pool heaters will have to meet a new national standard of 82% thermal efficiency on April 16, 2013. Heated pools must

have a vapor‐retardant cover or a liquid cover or some other means to reduce heat loss. Air infiltration Conducting a Blower door test or follow a checklist for inspection

Recessed lights have to be e IC‐rated and labeled to meet ASTM E 283 Window limits Prescriptive and performance compliance: maximums changed Ducts: Programmable thermostat required for forced air systems Lighting: must have 50% high efficacy lamps Gas pool heaters will have to meet a new national standard of 82% thermal

efficiency on April 16, 2013. Heated pools must have a vapor‐retardant cover or a liquid cover or some other means to reduce heat loss. Commercial There are new requirements for commercial building which include:

HVAC equipment updated to ASHRAE 90.1‐07 addenda IEERs (Integrated Energy Efficiency Ratio) replace IPLVs for most

commercial‐sized cooling equipment Equipment is treated as either a simple or complex system. New water chilling package table provides 2 paths for determining compliance, A & B, and a new equation for determining chiller efficiency required (for max. full load and NPLV) where not designed for operation at AHRI 550/590 test conditions Credit is allowed for Enthalphy Recovery Ventilation (ERVs) Credit is provided for vegetative roofs under certain conditions

• HVAC equipment updated to ASHRAE 90.1‐07 addenda

• IEERs (Integrated Energy Efficiency Ratio) replace IPLVs for most commercial‐sized cooling equipment

• Equipment is treated as either a simple or complex system.

• New water chilling package table provides 2 paths for determining compliance, A & B, and a new equation for determining chiller efficiency required (for max. full load and NPLV) where not designed for operation at AHRI 550/590 test conditions

• Credit is allowed for Enthalphy Recovery Ventilation (ERVs)

• Credit is provided for vegetative roofs under certain conditions

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Lesson 2 ADMINISTRATION AND ENFORCEMENT Administration and Enforcement The following information is meant to provide a basic understanding of the administration and enforcement requirements of the Florida Building Code- Energy The information will allow someone unfamiliar with the permit process in Florida to understand the requirements for design and permitting. When necessary the section numbers from the code are provided. The following information is meant to provide a basic understanding of the administration and enforcement requirements of the Florida Building Code- Energy When necessary the section numbers from the code are provided. Scope- Section 101.2 The section states that the Energy Code is a statewide uniform code and cannot be made more stringent or lenient by local government. This was a longstanding provision in the Florida Energy Code; that it is a statewide mini/maxi code. As such it was part of the model for the Florida Building Code concept (as a minimum code). Local governments can adopt more stringent requirements under the conditions outlined in the Florida Statutes for the building code, but amendments cannot be made to the Energy Code or Accessibility Code. The energy code provides for a uniform standard of energy efficiency by setting forth the minimum requirements for exterior envelopes, lighting, electrical distribution, and selection of heating, lighting, ventilating, air conditioning and service water heating systems. The code applies to all new buildings, to additions, to existing buildings and manufactured homes, and to renovations to existing buildings, both public and private, to changes of occupancy, to the site-installed components and features of manufactured homes at their first set-up, and to the installation or replacement of building systems and components with new products for which thermal efficiency standards are set by this code. The intent of the Florida Building Code- Energy is to regulate the design and construction of buildings for the effective use of energy. The code is intended to provide flexibility to permit the use of innovative approaches and techniques to achieve the effective use of energy. The code is not intended to abridge safety, health or environmental requirements contained in other applicable codes or ordinances. Where, in any specific case, different sections of this code specify different materials, methods of construction or other requirements, the most restrictive shall govern. Where there is a conflict between a general requirement and a specific requirement, the specific requirement shall govern.

The Energy Code is a statewide uniform code and cannot be made more stringent or lenient by local government.

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The code applies to all new buildings, to additions, to existing buildings and manufactured homes, and to renovations to existing

The intent of the Florida Building Code- Energy is to regulate the design and construction of buildings for the effective use of energy.

Where, in any specific case, different sections of this code specify different materials, methods of construction or other requirements, the most restrictive shall govern

Compliance. Residential buildings not more than three stories above grade in height are designed and built to meet the provisions of Chapter 4. Commercial buildings and residential buildings greater than 3 stories are designed and built to meet the provisions of Chapter 5. Residential buildings are R-3 buildings, as well as R-2 and R-4 buildings three stories or less in height above grade. Residential buildings not more than three stories above grade in height are designed and built to meet the provisions of Chapter 4. Commercial buildings and residential buildings greater than 3 stories are designed and built to meet the provisions of Chapter 5

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Lesson 3 Existing Buildings For many of us the more difficult portions of the Energy Code relate to existing building; when to apply the code and how to apply the code. One of the changes since that last edition of the code is Table 101.4.1 that provides beginning guidance of how to apply the code.

Existing buildings must meet the criteria in Table 101.4.1 as appropriate to the condition described. Unless required by a specific code section the code is not intended to require the removal, alteration or abandonment of, nor prevent the continued use and maintenance of, an existing building or building system lawfully in existence at the time of adoption of the code. However there are building that are exempt from the energy code where Table 101.4.1 would not apply. For many of us the more difficult portions of the Energy Code relate to existing building; when to apply the code and how to apply the code. Existing buildings must meet the criteria in Table 101.4.1 as appropriate to the condition described.

However there are building that are exempt from the energy code where Table 101.4.1 would not apply.

Additions, alterations, renovations or repairs. Any additions, alterations, renovations or repairs to an existing building, to a building system or to a portion of a building or system portion must be made following the direction provided in Table 101.4.1. These provisions apply to the proposed construction but do not require the unaltered portions of the existing building or building system to comply. Either the addition can comply on its own or the existing building and addition comply with this code as a single building. If the existing building, or part of an existing building, is not exempt from the energy code in accordance with Table 101.4.1, the following element elements or improvement are not required to comply provided the energy use of the building is not increased:

1. Storm windows installed over existing fenestration. 2. Glass only replacements in an existing sash and frame. 3. Existing ceiling, wall or floor cavities exposed during construction provided that these cavities are filled with insulation. 4. Construction where the existing roof, wall or floor cavity is not exposed. 5. Reroofing for roofs where neither the sheathing nor the insulation is exposed. Roofs without insulation in the cavity and where the sheathing or insulation is exposed during reroofing shall be insulated either above or below the sheathing. 6. Reserved.

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7. Alterations that replace less than 50 percent of the luminaires in a space, provided that such alterations do not increase the installed interior lighting power. 8. Alterations that replace only the bulb and ballast within the existing luminaires in a space provided that the alteration does not increase the installed interior lighting power. Any additions, alterations, renovations or repairs to an existing building, to a building system or to a portion of a building or system portion must be made following the direction provided in Table 101.4.

The following element elements or improvement are not required to comply provided the energy use of the building is not increased: 1. Storm windows installed over existing fenestration. 2. Glass only replacements in an existing sash and frame. 3. Existing ceiling, wall or floor cavities exposed during construction provided that these cavities are filled with insulation. 4. Construction where the existing roof, wall or floor cavity is not exposed. 5. Reroofing for roofs where neither the sheathing nor the insulation is exposed. Roofs without insulation in the cavity and where the sheathing or insulation is exposed during reroofing shall be insulated either above or below the sheathing. 6. Reserved. 7. Alterations that replace less than 50 percent of the luminaires in a space, provided that such alterations do not increase the installed interior lighting power. 8. Alterations that replace only the bulb and ballast within the existing luminaires in a space provided that the alteration does not increase the installed interior lighting power.

Table 101.4.1 Nonexempt Existing Buildings There are two overarching categories to the compliance table, date related and non-date related. These two categories are in recognition that some older buildings will require a certain level of grandfathering and what the general requirements will be for renovations, additions and new building systems. When a building is date related and was not previously conditioned and the permit date was prior to 1979 which was the implementation of and energy code in Florida, then the components being changed have meet the code as new. If the building was permitted after March 1979 and was non previously conditioned then the improvements are handled the same as an addition. If the building is undergoing change of occupancy (there will be more information on this subject under changes of occupancy further in the course) and the permit dated was prior to 1979 then the components being installed have to meet code as new. If permitted after March 1979 then the building has to meet code for the new occupancy.

There are two overarching categories to the compliance table, date related and non-date related.

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When a building is date related and was not previously conditioned and the permit date was prior to 1979 which was the implementation of and energy code in Florida, then the components being changed have meet the code as new

If the building is undergoing change of occupancy (there will be more information on this subject under changes of occupancy further in the course) and the permit dated was prior to 1979 then the components being installed have to meet code as new

If permitted after March 1979 then the building has to meet code for the new occupancy.

Additions, Renovations and New Systems For those non date related improvements, addition are handled using the requirements for additions, Renovations require that the companies being changed be installed to meet code, and new systems must be installed to meet code. Both for date relate changes and non-date related changes the requirements are modified by foot-notes which include: None of the improvements or changes made can make the building less energy efficient. For additions the minimum equipment efficiencies are met only when equipment installed specifically serves the addition or is being installed in conjunction with the construction of the addition. If an existing building is unable to meet one or more current prescriptive code minimum requirements, it may be exempt from those minimum requirements if the entire building is brought into compliance by Section 405 or Section 506, as applicable with the addition. For those buildings undergoing and alteration that vary or change insulation, HVAC systems, water heating systems, or exterior envelope provided that the estimated cost exceeds 30 percent of the assessed value of the structure then the renovation requirements have to be met. For those non date related improvements, addition are handled using the requirements for additions Renovations require that the companies being changed be installed to meet code New systems must be installed to meet code. None of the improvements or changes made can make the building less energy efficient. Historic buildings. The Florida Existing Building code, and in fact most building codes recognize that historic building need to be treated differently. For the most part they were not

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constructed in eras where there were codes, and in most cases do not meet the codes of today. Any building or structure as described in Section 267.021, Florida Statutes which is ; any prehistoric or historic district, site, building, object, or other real or personal property of historical, architectural, or archaeological value, and folklife resource.. These properties or resources may include, but are not limited to, monuments, memorials, Indian habitations, ceremonial sites, abandoned settlements, sunken or abandoned ships, engineering works, treasure trove, artifacts, or other objects with intrinsic historical or archaeological value, or any part thereof, relating to the history, government, and culture of the state. For purposes of the building codes we are of course interested in buildings and these will typically listed in the State or National Register of Historic Places; designated as a historic property under local or state designation law or survey; certified as a contributing resource with a National Register listed or locally designated historic district; or with an opinion or certification that the property is eligible to be listed on the National or State Registers of Historic Places either individually or as a contributing building to a historic district by the State Historic Preservation Officer or the Keeper of the National Register of Historic In other words they either are listed or are eligible to be listed. If designated a historic building they are exempt from the Florida Building code- Energy The Florida Existing Building code, and in fact most building codes recognize that historic building need to be treated differently Any building or structure as described in Section 267.021, Florida Statutes which is ; any prehistoric or historic district, site, building, object, or other real or personal property of historical, architectural, or archaeological value, and folklife resource For purposes of the building codes we are of course interested in buildings and these will typically listed in the State or National Register of Historic Places If designated a historic building they are exempt from the Florida Building code- Energy Change in occupancy or use The subject of change of occupancy can be a bit tricky. For those of us who have been in the code business for while we know that the subject of use change and occupancy change has been the subject of debate for many years. The International Building Code in Chapter 34 would require changes from uses within a group to be viewed as changes of use but of course the Florida Building Code- Building reserved Chapter 34 in lieu of the Florida Building Code- Existing, By the way neither code defined change of use or occupancy directly. The Florida Building Code- Energy does define a change of use and the occupancy is

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considered the major occupancy group designations established by Chapter 3 of the Florida Building Code, Building. Spaces undergoing a change in occupancy that would result in an increase in demand for either fossil fuel or electrical energy have to comply with this code. Where the use in a space changes from one use in Table 505.5.3 to another use in Table 505.5.3, the installed lighting wattage has to comply with Section 505.5. The subject of change of occupancy can be a bit tricky The Florida Building Code- Energy does define a change of use The occupancy is considered the major occupancy group designations established by Chapter 3 of the Florida Building Code, Building Spaces undergoing a change in occupancy that would result in an increase in demand for either fossil fuel or electrical energy have to comply with this code. Where the use in a space changes from one use in Table 505.5.3 to another use in Table 505.5.3, the installed lighting wattage has to comply with Section 505.5. . Change in space conditioning In some instances the code treats other conditions as is they were changes of occupancy. .One of these is when a nonconditioned space that is altered to become conditioned space. The space then has to be brought into full code compliance as described in Table 101.4.1. One example of this would be a storage building that has no heating or cooling where heat or air is added. Of course this is not a change of occupancy as the use is and will be storage. In some instances the code treats other conditions as is they were changes of occupancy One of these is when a nonconditioned space that is altered to become conditioned space The space then has to be brought into full code compliance as described in Table 101.4.1. Mixed occupancy Ok so now that we have the occupancy issues worked out, let’s reverse course to talk about mixed occupancies. What the Florida Building Code- Building states.is that buildings that contain more than one occupancy group are mixed occupancy buildings. Buildings with mixed occupancies must comply with one of the design options contained in Section 508. However, the Florida Building Code- Energy defines mixed occupancies as buildings that contain residential and commercial uses. When a building includes both residential and commercial

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occupancies, each occupancy is separately considered and must meet Chapter 4 for residential and Chapter 5 for commercial. What the Florida Building Code- Building states.is that buildings that contain more than one occupancy group are mixed occupancy buildings The Florida Building Code- Energy defines mixed occupancies as buildings that contain residential and commercial uses When a building includes both residential and commercial occupancies, each occupancy is separately considered and must meet Chapter 4 for residential and Chapter 5 for commercial. Building systems The code sets thermal efficiency standards for the Heating, ventilating or air conditioning systems; service water or pool heating systems; electrical systems and motors; lighting systems. These system standards are to be followed when new products are installed or replaced in existing buildings and for which a permit is obtained. Where part of a functional unit is repaired or replaced, the entire system is not required to be brought up to code. For example, the replacement of an entire HVAC system is not required because a new compressor or other part does not meet code when installed with an older system. Building systems repairs There are four exceptions that allow less than full compliance with the Energy Code. The one exemption that requires a great deal of explanation is repairs. The code states: Where part of a functional unit is repaired or replaced. For example, when the replacement of an entire HVAC system is not required and because the new compressor or other part does not meet code and is installed in an older system, the code does not consider the compressor replacement to be a “repair” and therefore subject to the code as long as the unit being replaced is a functional unit. A repair is the reconstruction or renewal of any part of an existing building for the purpose of its maintenance and a replacement is the installation of part or all of an existing mechanical or electrical system in an existing building. The term “repair” here is odd and seems in contrast to what the code states. The code seems to say that a repair is not subject to the code as a repair, but the language used in the code as an example is that a replacement of a compressor is not a repair. It is poor code language to put examples in codes, however the distinction that should be drawn here is where permits are required, usually repairs do not require permits. What the code is saying is that compliance with the code is required as well as permits and inspections. The wording of the code was developed from a DEC Statement issued by the

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Florida Building Commission to clarify the 2007 Florida Building Code The reasoning given for the code change is that equipment replacement is not maintenance or a repair and therefore requires a permit and inspections. The reason for requiring a permit and inspections is that replacement of only one component of a system without regard to system compatibility will not provide energy code compliance and may in fact use more energy. The intent is that only one component may be replaced provided the end result is a matched system, if the system is not matched then both units must be replaced. The system must operate in all modes without any refrigerant charge modification and must provide similar capacity and at least the same efficiency as the system replaced. This is particularly true when replacing an outdoor unit (cooling or heat pump) with a new 13-SEER or higher unit and keeping an existing indoor air handler or coil (typically 10-SEER). This combination typically results in less than 10-SEER when applied as a “system” and low capacity. In times of historic high electric rates the “pay back” of a new matched 13-SEER is typically less than two years. There are four exceptions that allow less than full compliance with the Energy Code. The one exemption that requires a great deal of explanation is repairs The term “repair” here is odd and seems in contrast to what the code states The reasoning given for the code change is that equipment replacement is not maintenance or a repair and therefore requires a permit and inspections Wording of the DEC statement The Florida Building Commission issued a Declaratory Statement (DCA07-DEC-172) which found that similar circumstances as described above (replacement of the outdoor condenser on a heat pump in Hillsborough County) “do not constitute a repair subject to more permissive code provisions because the unit being replaced is itself a functional unit; rather these circumstances implicate provisions relating to the installation of a new system.” It further found that “Section 13-607.1.ABC.3.1.1, Florida Building Code, Building Volume (2007 as amended) requires verification of equipment efficiency to demonstrate compliance with U.S. Department of Energy (DOE) certification requirements. Outdoor and indoor units that are not designed to be operated together must still meet the DOE standard. If the system does not meet the standard, it is considered to be miss-matched and does not meet code.” The Florida Building Commission found that the provisions of this Declaratory Statement be included in the code.

The same rationale that applied to heat pumps also follows with cooling only equipment. The adjustment of the refrigerant charge from heating to cooling is not applicable but the low SEER and extreme overcharging (of refrigerant) is required to provide even marginal performance in terms of cooling capacity and efficiency.

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As required by Declaratory Statement DCA07-DEC-172 the Energy Code was modified to require that: Outdoor and indoor units that are not designed to be operated together must meet U.S. Department of Energy certification requirements. Matched systems are required; and this match may be verified by any one of the following means:

• The Air-Conditioning, Heating, and Refrigeration Institute data

• An accredited laboratory

• Manufacturer’s letter

• Letter from registered Professional Engineer in the State of Florida The Florida Building Commission issued a Declaratory Statement (DCA07-DEC-172) which found that similar circumstances as described above Matched systems are required; and this match may be verified by any one of the following means:

• The Air-Conditioning, Heating, and Refrigeration Institute data

• An accredited laboratory

• Manufacturer’s letter

• Letter from registered Professional Engineer in the State of Florida Additional building system exceptions Where existing components are utilized with a replacement system, such as air distribution system ducts or electrical wiring for lights, these components or controls need not meet code if meeting code would require that component’s replacement. Replacement equipment that would require extensive revisions to other systems, equipment or elements of a building where the replacement is a like-for-like replacement, such as through-the-wall condensing units and PTACs, chillers, and cooling towers in confined spaces code compliance is not required.. Where existing components are utilized with a replacement system, such as air distribution system ducts or electrical wiring for lights, these components or controls need not meet code if meeting code would require that component’s replacement. Replacement equipment that would require extensive revisions to other systems, equipment or elements of a building where the replacement is a like-for-like replacement, such as through-the-wall condensing units and PTACs, chillers, and cooling towers in confined spaces code compliance is not required.. Replacement HVAC equipment Consistent with green code and above code programs, at the time of a total replacement of HVAC evaporators and condensing units, all accessible joints and seams in the air distribution system have to be inspected and sealed where needed using reinforced mastic or code approved equivalent. Accessible is defined as having 30 inches of clearance. After the duct work is sealed a signed certification by the contractor has to be attached to the air handler unit stipulating

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that this work has been accomplished. Sealing is not required when the ducts are in conditioned space, the joints or seams are already sealed with fabric and mastic or the system is tested and repaired as necessary. At the time of a total replacement of HVAC evaporators and condensing units, all accessible joints and seams in the air distribution system have to be inspected and sealed Accessible is defined as having 30 inches of clearance After the duct work is sealed a signed certification by the contractor has to be attached to the air handler Sealing is not required when the ducts are in conditioned space, the joints or seams are already sealed with fabric and mastic or the system is tested and repaired as necessary. Replacement equipment sizing When there is a total replacement of the condensing and evaporator components of HVAC systems, the A/C contractor or a licensed Florida PE submits a nationally recognized method based sizing calculation to the code official for permit. The replacement of the condensing and evaporator components of HVAC systems must be in accordance with Florida law and the provisions of Section 403.6.1 or Section 503.2.1,. When there is a total replacement of the condensing and evaporator components of HVAC systems, the A/C contractor or a licensed Florida PE submits a nationally recognized method based sizing calculation to the code official for permit The replacement of the condensing and evaporator components of HVAC systems must be in accordance with Florida law and the provisions of Section 403.6.1 or Section 503.2.1,. Existing equipment efficiencies Existing cooling and heating equipment need not meet the minimum equipment efficiencies of Sections 403.6.2.2 or 403.6.2.3 except to preserve the original approval or listing of the equipment. Existing cooling and heating equipment need not meet the minimum equipment efficiencies of Sections 403.6.2.2 or 403.6.2.3 except to preserve the original approval or listing of the equipment. Exempt buildings Besides building that have no energy use, certain building are exempt from the Florida Building Code Energy. Any building for which federal mandatory standards preempt state energy codes is exempt. Any building of less than 1,000

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square feet whose primary use is not as a principal residence and which is constructed and owned by a natural person for hunting or similar recreational purposes is exempt from the code. Shell buildings are exempt for full compliance but must meet certain code requirements depending on how the shell is made or phased. Besides building that have no energy use, certain building are exempt from the Florida Building Code Energy Any building for which federal mandatory standards preempt state energy codes is exempt Any building of less than 1,000 square feet whose primary use is not as a principal residence and which is constructed and owned by a natural person for hunting or similar recreational purposes is exempt from the code Shell buildings are exempt for full compliance but must meet certain code requirements depending on how the shell is made or phased.

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Lesson 4 PERMITS Permit Requirements The methods and submission required to obtain permits under the Florida Building Code- Energy have changed. The changes however are more of a reflection that the form of the code follows the International Energy Conservation Code which is the base. Most of the sub codes for the Florida Building Code will default administrative functions to the Florida Building Code- Building. The Florida Building Code- Energy does not. The methods and submission required to obtain permits under the Florida Building Code- Energy have changed The changes however are more of a reflection that the form of the code follows the International Energy Conservation Code which is the base Most of the sub codes for the Florida Building Code will default administrative functions to the Florida Building Code- Building. The Florida Building Code- Energy does not. Alternate materials—method of construction, design or insulating systems As with all of the other Florida Building Codes, the Florida Building Code- Energy permits the Building Official to accept alternative methods of compliance. The code is not intended to prevent the use of any material, method of construction, design or insulating system that is not specifically required, but the applicant has to show that the construction, design or insulating meets the intent of the code. Nationally recognized energy analysis procedures may be used to demonstrate that the building, or component thereof, will use less energy than a code compliant building (or building component) of the same configuration. As with all of the other Florida Building Codes, the Florida Building Code- Energy permits the Building Official to accept alternative methods of compliance The code is not intended to prevent the use of any material, method of construction, design or insulating system that is not specifically required the applicant has to show that the construction, design or insulating meets the intent of the code. Nationally recognized energy analysis procedures may be used to demonstrate that the building, or component thereof, will use less energy than a code compliant building (or building component) of the same configuration Above code programs There are a number of movements in the country to require or incentivize above code programs. Most of us would think in terms of green building programs such

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as LEED or Green Globes, but these may not enough requirements in their energy sections to be true above code programs. Of course all of these programs are under development and change, so analyses of what the program, offers would have to be undertaken. The International Green Construction Code Chapter 6 would be a true above code program in that it has been written as a code, the base structure of that code is the 2012 Intentional Energy Conservation Code which is 20 % or more “stringent” than the 2009. The code official or other authority having jurisdiction can to deem a national, state or local energy efficiency program to exceed the energy efficiency required by Florida Building Code- Energy, however the requirements identified as "mandatory” in Chapters 4 and 5 of this code, as applicable, have to be met. There are a number of movements in the country to require or incentivize above code programs. The International Green Construction Code Chapter 6 would be a true above code program The code official or other authority having jurisdiction can to deem a national, state or local energy efficiency program to exceed the energy efficiency required by Florida Building Code- Energy The requirements identified as "mandatory” in Chapters 4 and 5 of this code, as applicable, have to be met. Construction documents Of course there are minimal requirements for plans submission and to show compliance with the code. These documents will consist of plans with sufficient detail to show compliance along with any worksheets or data. The code official can require the documents to be prepared by a registered design professional where required by Florida Statutes or when special conditions exist. The requirement for documents can be waived by the code official if the code official determines they are not necessary to confirm compliance with this code There are minimal requirements for plans submission and to show compliance with the code These documents will consist of plans with sufficient detail to show compliance along with any worksheets or data. The code official can require the documents to be prepared by a registered design professional The requirement for documents can be waived by the code official Prescriptive versus Performance Criteria

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Energy Codes usually have both prescriptive and performance paths for compliance. The Florida Building Code- Energy allows both prescriptive and performance methods for Commercial and Residential applications. Prescriptive paths are forms with tables which have the thermal efficiency standards that have to be met. These standards will include values for items or systems such as the resistance values for walls, ceilings, windows and equipment and include R-values as well as U-values.

The Performance approach allows you to compare your proposed design to a baseline or reference design and demonstrate that the proposed design is at least as efficient as the baseline in terms of annual energy use. This approach allows greater flexibility but requires considerably more effort so it is automated using computer software. A performance approach is often necessary to obtain credit for special features, such as passive solar design, photo voltaic cells, thermal energy storage, and fuel cells. This approach requires an annual energy analysis for the proposed design and the reference design. Energy Codes usually have both prescriptive and performance paths for compliance. The Performance approach allows you to compare your proposed design to a baseline or reference design and demonstrate that the proposed design is at least as efficient as the baseline in terms of annual energy use

Forms As always with the energy codes, you show compliance with the forms developed by the Florida Building Commission. The forms designations follow the chapters with 4 for residential or 5 for commercial. Form 402 is a prescriptive form, 402 alternate is the Recheck form and 405 is any commission approved software printout. Form 502 is the prescriptive form and 506 is any commission approved software printout for commercial buildings. The number ranges refer to the codes section so for example 402 is the form for section 402, form 506 is the form for section 506. Residential buildings are R-3 buildings, as well as R-2 and R-4 buildings three stories or less in height above grade. The forms can be found at: http://www.floridabuilding.org/fbc/committees/energy/energy_forms/1_energy_forms.htm You show compliance with the forms developed by the Florida Building Commission. Form 402 is a prescriptive form, 402 alternate is the Recheck form and 405 is any commission approved software printout. Form 502 is the prescriptive form and 506 is any commission approved software printout for commercial buildings.

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The number ranges refer to the codes section so for example 402 is the form for section 402, form 506 is the form for section 506. Residential buildings are R-3 buildings, as well as R-2 and R-4 buildings three stories or less in height above grade. The forms can be found at: http://www.floridabuilding.org/fbc/committees/energy/energy_forms/1_energy_forms.htm Details required Construction documents have to be drawn to scale upon suitable material. Electronic media documents are permitted to be submitted when approved by the code official. Construction documents must have sufficient clarity to indicate the location, nature and extent of the work proposed, and shows in sufficient detail pertinent data and features of the building, systems and equipment as herein governed. The details provided must include, as applicable, insulation materials and their R-values; fenestration U-factors and SHGCs; area-weighted U-factor and SHGC calculations; mechanical system design criteria; mechanical and service water heating system and equipment types, sizes and efficiencies; economizer description; equipment and systems controls; fan motor horsepower and controls; duct sealing, duct and pipe insulation and location; lighting fixture schedule with wattage and control narrative; and air sealing details. Construction documents have to be drawn to scale upon suitable material Construction documents must have sufficient clarity to indicate the location, nature and extent of the work proposed The details provided must include, as applicable, insulation materials and their R-values; fenestration U-factors and SHGCs; area-weighted U-factor and SHGC calculations; mechanical system design criteria; mechanical and service water heating system and equipment types, sizes and efficiencies; economizer description; equipment and systems controls; fan motor horsepower and controls; duct sealing, duct and pipe insulation and location; lighting fixture schedule with wattage and control narrative; and air sealing details. Design Criteria Climate zones are shown in Table 301.1. The prescriptive envelope compliance methods of the code, Section 402 and Section 502 have no differences in compliance criteria by climate zone. Climate criteria for the performance-based code compliance methods, Section 405 and Section 506, are determined by climate data from the weather data collection station nearest to the building’s location. Only Miami-Dade and Monroe County have a different zone (1A), than

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the rest of the state (2A). All Florida counties are considered warm humid counties. The interior design temperatures used for heating and cooling load calculations is a maximum of 72°F for heating and minimum of 75°F for cooling. The prescriptive envelope compliance methods of the code, Section 402 and Section 502 have no differences in compliance criteria by climate zone. Climate criteria for the performance-based code compliance methods, Section 405 and Section 506, are determined by climate data from the weather data collection station nearest to the building’s location. Only Miami-Dade and Monroe County have a different zone (1A), than the rest of the state (2A). All Florida counties are considered warm humid counties. The interior design temperatures used for heating and cooling load calculations is a maximum of 72°F for heating and minimum of 75°F for cooling. Fenestration product rating U-factors of fenestration products are determined in accordance with NFRC 100 by an accredited, independent laboratory, and labeled and certified by the manufacturer.

Products lacking such a labeled U-factor shall be assigned a default U-factor from Table 303.1.3(1) or 303.1.3(2).

The solar heat gain coefficient (SHGC) of glazed fenestration products is determined in accordance with NFRC 200 by an accredited, independent laboratory, and labeled and certified by the manufacturer.

Products lacking such a labeled SHGC shall be assigned a default SHGC from Table 303.1.3(3). U-factors of fenestration products are determined in accordance with NFRC 100 by an accredited, independent laboratory, and labeled and certified by the manufacturer.

Products lacking such a labeled U-factor shall be assigned a default U-factor from Table 303.1.3(1) or 303.1.3(2).

The solar heat gain coefficient (SHGC) of glazed fenestration products is determined in accordance with NFRC 200 by an accredited, independent laboratory, and labeled and certified by the manufacturer.

Products lacking such a labeled SHGC shall be assigned a default SHGC from Table 303.1.3(3).

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Certifications required No license or registration is required to prepare the code compliance form for single-family residential dwellings, duplexes and town-houses. However it is usual to see these forms prepared by the AC contractors. Commercial buildings require the forms be prepared by a registered design professional in accordance with the provisions of Section 481.229, Florida Statutes, or Section 471.003, Florida Statutes. If the HVAC systems is equal to or less than 15 tons per system, air conditioning or mechanical contractors licensed in accordance with Chapter 489, Florida Statutes, or State of Florida certified commercial building energy raters may prepare the code compliance forms. Design professionals responsible under Florida law for the design of lighting, electrical, mechanical, and plumbing systems and the building shell, shall certify compliance of those building systems with the code by signing and providing their professional registration number on the energy code form provided as part of the plans and specifications to the building department. No license or registration is required to prepare the code compliance form for single-family residential dwellings, duplexes and town-houses Commercial buildings require the forms be prepared by a registered design professional in accordance with the provisions of Section 481.229, Florida Statutes, or Section 471.003, Design professionals responsible under Florida law for the design of lighting, electrical, mechanical, and plumbing systems and the building shell, shall certify compliance of those building systems with the code by signing and providing their professional registration number on the energy code form provided as part of the plans and specifications to the building department. Code compliance certification The building’s owner, the owner’s architect, or other authorized agent legally designated by the owner shall certify that the building is in compliance with the code, as per Section 553.907, Florida Statutes, prior to receiving the permit to begin construction or renovation. The building’s owner, the owner’s architect, or other authorized agent legally designated by the owner shall certify that the building is in compliance with the code, as per Section 553.907, Florida Statutes, prior to receiving the permit to begin construction or renovation. The code official is required to examine or cause to be examine the construction documents and determine if the proposed construction meets codes and laws. When the code official issues a permit where construction documents are required, the construction documents have to be endorsed in writing and stamped "Reviewed for Code Compliance.”

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One set of construction documents is retained by the code official. The other set is returned to the applicant, kept at the site of work and open to inspection by the code official or a duly authorized representative. Changes made during construction to a building’s design or in materials or equipment installed that would diminish the building’s energy performance are deemed to be not in compliance with the approved construction documents and shall be resubmitted for approval as an amended set of construction documents. The code official is required to examine or cause to be examine the construction documents and determine if the proposed construction meets codes and laws. When the code official issues a permit where construction documents are required, the construction documents have to be endorsed in writing and stamped "Reviewed for Code Compliance.” One set of construction documents is retained by the code official. The other set is returned to the applicant, kept at the site of work and open to inspection by the code official or a duly authorized representative

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Lesson 5 INSPECTIONS Required Inspections Both the Florida Building Code- Building and the Florida the Florida Building Code- require inspections for construction or work where a permit is issued. Work cannot be done beyond the point indicated in each successive inspection without first obtaining the approval of the code official. Unfortunately neither the building code, nor the energy codes have many requirements for inspections. The only inspection directly called for in the administrative section of the Florida Building Code-Energy is a final and the only inspection for energy called for in the Florida Building Code- Building is Energy insulation. Other inspections required for the building envelope help however with compliance. Both the Florida Building Code- Building and the Florida the Florida Building Code- require inspections for construction or work where a permit is issued. Unfortunately neither the building code, nor the energy codes have many requirements for inspections. The only inspection directly called for in the administrative section of the Florida Building Code-Energy is a final and the only inspection for energy called for in the Florida Building Code- Building is Energy insulation Approved inspection agencies The code official can accept reports of approved inspection agencies, provided the agencies are qualified and reliable. The code official can accept reports of approved inspection agencies, provided the agencies are qualified and reliable. Reinspection and testing When the work or an installation does not pass an initial test or inspection, work has to be corrected and then resubmitted to the code official for inspection and testing. When the work or an installation does not pass an initial test or inspection, work has to be corrected and then resubmitted to the code official for inspection and testing. Additional requirements for residential As stated there is very little direct requirement for inspection in the administrative sections of the energy code or building code. Both the residential and commercial chapters have a number of mandatory requirements that have to be met, but are not called out as an inspection requirement by the code. We can assume that someone would have to verify that these tasks are completed, and the local building department may require these inspections as part of their

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permit process. As stated there is very little direct requirement for inspection in the administrative sections of the energy code or building code. Both the residential and commercial chapters have a number of mandatory requirements that have to be met, but are not called out as an inspection requirement by the code. We can assume that someone would have to verify that these tasks are completed, and the local building department may require these inspections as part of their permit process. Example of requirements to be met An example of a requirement to be met, that has to be looked at by someone, but is not called our as a mandatory building inspection in the residential and commercial chapters is air leakage. This is a requirement that the building envelopes which can be the same as the weather envelop and air barrier, be sealed in a number of places. The intention is to prevent moisture from crossing the barrier as well as air leakage. An example of a requirement to be met, that has to be looked at by someone, but is not called our as a mandatory building inspection in the residential and commercial chapters is air leakage. This is a requirement that the building envelopes which can be the same as the weather envelop and air barrier, be sealed in a number of places. The intention is to prevent moisture from crossing the barrier as well as air leakage. Air leakage 402.4.1 Building thermal envelope. The building thermal envelope shall be durably sealed to limit infiltration. The sealing methods between dissimilar materials shall allow for differential expansion and contraction. The following shall be caulked, gasketed, weatherstripped or otherwise sealed with an air barrier material, suitable film or solid material:

1. All joints, seams and penetrations. 2. Site-built windows, doors and skylights. 3. Openings between window and door assemblies and their respective jambs and framing. 4. Utility penetrations. 5. Dropped ceilings or chases adjacent to the thermal envelope. 6. Knee walls. 7. Walls and ceilings separating a garage from conditioned spaces.

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8. Behind tubs and showers on exterior walls. 9. Common walls between dwelling units. 10. Attic access openings. 11. Rim joist junction. 12. Other sources of infiltration. Air sealing and insulation However, there is a requirement in the residential chapter for demonstrating that the air barrier is complete and many of the items for the requirements for building thermal envelop can be verified through air sealing. There are two options to show compliance with air sealing; one is to verify via inspection that certain critical items have been inspected and comply; the other is via a blower door test.

The specific areas to be inspected by the building department or a third party include:

Air barrier and thermal barrier, ceiling/attic, walls, windows and doors, rim joists, floors, (including above-garage and cantilevered floors), crawl space walls, shafts, penetrations, narrow cavities. garage separation, recessed lighting, plumbing and wiring shower/tub on exterior wall, electrical/phone box on exterior walls, common wall, HVAC register boots, fireplaces There is a requirement in the residential chapter for demonstrating that the air barrier is complete and many of the items or intent for the requirements for building thermal envelop can be verified through air sealing There are two options to show compliance with air sealing; one is to verify via inspection that certain critical items have been inspected and comply; the other is via a blower door test. Blower door test In order to pass a blower door test for envelope tightness and insulation when tested air leakage is less than seven air changes per hour when tested at a pressure of 50 pascals. The test is done after rough in and after installation of penetrations of the building envelope, including penetrations for utilities, plumbing, electrical, ventilation and combustion appliances. During testing: 1. Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed; 2. Dampers shall be closed, but not sealed, including exhaust, intake, makeup air, backdraft and flue dampers; 3. Interior doors shall be open; 4. Exterior openings for continuous ventilation systems and heat recovery ventilators shall be closed and sealed; 5. Heating and cooling system(s) shall be turned off; 6. HVAC ducts shall not be sealed; and

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7. Supply and return registers shall not be sealed.

In order to pass a blower door test for envelope tightness and insulation when tested air leakage is less than seven air changes per hour when tested at a pressure of 50 pascals.

The test is done after rough in and after installation of penetrations of the building envelope, including penetrations for utilities, plumbing, electrical, ventilation and combustion appliances. During testing: 1. Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed; 2. Dampers shall be closed, but not sealed, including exhaust, intake, makeup air, backdraft and flue dampers; 3. Interior doors shall be open; 4. Exterior openings for continuous ventilation systems and heat recovery ventilators shall be closed and sealed; 5. Heating and cooling system(s) shall be turned off; 6. HVAC ducts shall not be sealed; and 7. Supply and return registers shall not be sealed.

Energy performance level (EPL) display card The building official is charged with ensuring that an Energy Performance Level (EPL) display card completed and signed by the builder accurately reflects the plans and specifications submitted to demonstrate code compliance for the building before final approval of a residential building for occupancy. Florida statutes requires the EPL display card be included as an addendum to each sales contract executed after January 1, 1994, for both presold and nonpresold residential buildings. The EPL display card contains information indicating the energy performance level and efficiencies of components installed in a dwelling unit. The building official is charged with ensuring that an Energy Performance Level (EPL) display card completed and signed by the builder accurately reflects the plans and specifications submitted to demonstrate code compliance for the building before final approval of a residential building for occupancy The EPL display card contains information indicating the energy performance level and efficiencies of components installed in a dwelling unit. Reporting A reporting form has to be submitted to the local building department by the owner or owner’s agent. The submittal is to certify compliance with the code. The reporting forms are a copy of the front page of the form applicable for the code chapter under which compliance is demonstrated. The local building official

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forwards these forms to the entity representing the Florida Building Commission on a quarterly basis as per the reporting schedule in Table 110.2. Here they are warehoused. A reporting form has to be submitted to the local building department by the owner or owner’s agent.

The submittal is to certify compliance with the code. The reporting forms are a copy of the front page of the form applicable for the code chapter under which compliance is demonstrated.

The local building official forwards these forms to the entity representing the Florida Building Commission on a quarterly basis as per the reporting schedule in Table 110.2.

Lesson Six

TRANSITIONING TO RESCHECK

Florida is now a REScheck State

With the change in Florida to create a separate energy code based on the

International Energy Efficiency Code, you now have the ability to use REScheck,

which is the national standard computer program for energy published by the

Department of Energy. When you use Recheck for the WEB or as a download,

the first thing you will see when open the program is the main page that will allow

you to do a code lookup, and you would set the code to use, which can be

changed by code and edition if you work in more than one state.

With the change in Florida to create a separate energy code based on the

International Energy Efficiency Code, you now have the ability to use REScheck

The main page that will allow you to do a code lookup, and you would set the

code to use, which can be changed by code and edition if you work in more than

one state.

Mandatory Requirements

As Florida is different, and as there are differences in the code and the program,

the program requires you to click a box (and you should read what the

differences are from the base) you have read the mandatory requirements to use

the program

As Florida is different, and as there are differences in the code and the program,

the program requires you to click a box (and you should read what the

differences are from the base) you have read the mandatory requirements to use

the program

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Mandatory Requirements

Hera are the mandatory requirements. Other than this the program is used the

same way throughout the country and the following instructions apply in Florida.

The example in the course is for a house in South Carolina, but the process is

the same in Florida, Virginia, or Utah.

Florida Mandatory Requirements

Roof Reflectance Roof reflectance is to be no more than 0.25 in accordance with testing to Section 405.5.5.2.

Glazing Percentage Limitation The window area as a percentage of the conditioned floor area (CFA) shall not exceed 20 percent.

Exceptions: The following exceptions apply to additions.

1. When a fenestration(s) in an existing exterior wall is being removed or

enclosed by an addition, an amount equal to the total area of this

fenestration may be subtracted from the total glass area prior to

determining the installed glass percentage.

2. Additions of 600 square feet (56 m2) or less may have up to 50 percent

glass to conditioned floor area.

3. Glass windows and doors that were previously located in an existing

exterior wall that is being removed or enclosed by an addition do not have

to comply with the U-factor and solar heat gain coefficient requirements in

Table 402.1.1 when reinstalled as part of the addition.

Energy Performance Level (EPL) Display Card The EPL display card must be completed and certified by the builder before final approval of the building for occupancy. Florida law (Section 553.9085, Florida Statutes) requires the EPL display card to be included as an addendum to each sales contract for both presold and nonpresold residential buildings. Go to the link at the bottom of this page and select Appendix C for the form. An example of the form is shown below.

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Lesson Seven- Understanding REScheck An Introduction to REScheck

This lesson describes how to use REScheck software and provides an example

residence with plans, sections and details to demonstrate how data is entered

into REScheck. The instructions will include examples of actual screens utilized

in REScheck. To follow along with the example project, click on the document

link in the lower right hand corner of the screen (when provided) to view the

plans, sections and details for the sample house. You can print these example

plans out for quick reference while viewing the instructions and sample screens

of REScheck.

REScheck is designed to demonstrate compliance with the requirements

of the Energy Code. REScheck software runs on the Microsoft Windows operating system. REScheck software can be used to demonstrate compliance with the 1992, 1993, and 1995 editions of the MEC, the 1998, 2000, 2003 2006, and 2009 editions of the IECC, and state and county residential codes which can be found at the WebLink at the lower left hand corner of the screen. REScheck is now to be used for Florida. Data about a specific project is entered into screens and REScheck performs a simple U-factor times Area (UA) calculation for each building assembly to determine the overall UA of your building. The UA that would result from a building conforming to the code requirements is compared against the UA for your building. If the total heat loss (represented as a UA) through the envelope of your building does not exceed the total heat loss from the same building conforming to the code, then the software declares that you pass. A high-efficiency equipment trade-off can also be performed. WebLink: http://www.energycodes.gov/implement/state_codes/index.stm REScheck is designed to demonstrate compliance with the requirements of International Energy Conservation Code. REScheck performs a simple U-factor times Area (UA) calculation for each building assembly to determine the overall UA of your building. Compliance Methods Audio: The REScheck product group offers two ways to demonstrate compliance: the trade-off approach and the prescriptive packages approach. The prescriptive packages approach lists the minimum R-value or maximum U-factor requirements for each building component such as windows, walls, and roofs. This approach is quick and easy to use, but many users find it somewhat

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restrictive because the requirements typically are based on worst-case assumptions and all requirements must be met exactly as specified. By locating the correct climate zone and looking up the appropriate table of packages, you can verify that your project meets one of the packages listed for that climate zone. The prescriptive packages approach, allows builders or designers to select from various combinations of energy conservation measures based on "climate zone" location. Each combination or "package" specifies insulation levels, glazing areas, glazing U-factors (thermal performance), and sometimes heating and cooling equipment efficiency. By locating the correct climate zone and looking up the appropriate table of packages, builders and officials can ensure the project meets one of the packages listed for that zone. Paper-based versions of the pre-defined packages are available in PDF format. Prescriptive Package Field Guides (one for each climate zone), which provide a single page summary of the envelope requirements, are also available. The REScheck Prescriptive Package Generator is a web-based tool that allows you to generate your own code-compliant insulation and window packages rather than following pre-defined prescriptive packages for energy code compliance. Rather than the traditional approach of following pre-determined prescriptive packages for code compliance, the package generator allows you to generate your own code-compliant insulation and window packages based on building location, window-to-wall ratio, and your choice of insulation levels. Select a package you desire and print or save (in PDF) a Compliance Report and Inspection Checklist. The trade-off approach allows you to trade enhanced energy efficiency in one component against decreased energy efficiency in another component. You can, for example, trade decreased wall efficiency (lower R-value) for increased window efficiency (lower U-factor), or increase the roof insulation and reduce or eliminate slab-edge insulation. Typically, this method is less restrictive than prescriptive approaches because components that exceed the requirements can compensate for those that do not meet the code. The trade-off approach enables builders to vary insulation levels in the ceiling, wall, floor, basement wall, slab-edge and crawl space; glazing and door areas; and glazing and door U-factors. Based on the proposed plans and specifications, the builder enters simple information into REScheck. The software compares the project's UA-value to the value required for the climate zone, to determine if the project passes the MEC/IECC requirements. The software allows builders to trade off heating and air-conditioning equipment efficiency, as well as windows and insulation and generates a report that is suitable for plan checking and field inspection. The REScheck software simplifies energy code compliance by automating the trade-off calculations for this approach. REScheck is available in both a

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desktop and online version. The desktop version, simply called REScheck, can be installed on both PC and Mac systems. The online version, REScheck-Web, performs just like the desktop version but requires no download or installation. Projects can be saved online and accessed from anywhere. Choosing the appropriate approach depends on the complexity and/or uniqueness of the building and the amount of time and money available for demonstrating compliance. The prescriptive approach allows quick review of the requirements. If these requirements are too restrictive, try a trade-off approach. For example, if the window area of the building exceeds that allowed by the prescriptive approach, a trade-off approach might work. If nontraditional components are used or if energy use trade-off between building systems (e.g., envelope, mechanical) is desired, then use the performance approach. The REScheck product group offers two ways to demonstrate compliance: the trade-off approach and the prescriptive packages approach. The prescriptive packages approach lists the minimum R-value or maximum U-factor requirements for each building component such as windows, walls, and roofs. The prescriptive packages approach, allows builders or designers to select from various combinations of energy conservation measures based on "climate zone" location. The trade-off approach allows you to trade enhanced energy efficiency in one component against decreased energy efficiency in another component. This method is less restrictive than prescriptive approaches because components that exceed the requirements can compensate for those that do not meet the code. The REScheck software simplifies energy code compliance by automating the trade-off calculations for this approach. Choosing the appropriate approach depends on the complexity and/or uniqueness of the building and the amount of time and money available for demonstrating compliance. Getting Started with REScheck Audio: To use REScheck you need to have an understanding of Windows based programs, some basic information about the project, and complete house plans and details about the building components.

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When you open the program you will see a beginning screen that looks like most tabular data entry screens. The screen has a number of features that are important to know for navigation. The title bar displays the name of the currently open project file and the currently selected code. If no file is open, the word “Untitled” is displayed. The menu bar is located directly under the title bar and displays the available menus–File, Edit, View, Options, Code, Tools and Help. Take a closer look at the CODE tab. You will see that there are a number of choices to be made. The toolbar contains buttons with images representing some of the same options available in the menus. Below the toolbar are the Project, Envelope and Mechanical tabs. These are utilized for data entry of your project information to determine if your project complies with the Energy Code. Each tab has additional screens that will be explained in detail. Prior to beginning, you will need to do a plan take-off to be able to have the information required for data entry into REScheck. This is the same information that you would determine to check code compliance by hand and you can use the same forms for the most part. You can also use an add-on program found under “Tools” on the REScheck tool bar called AreaCalc Take-Off Tool which follows the structure of REScheck, calculates areas for you and imports the results. The information you will need are found in the plans, specifications and sections including details and dimensions. Building Sections are used to clarify insulation locations and levels for REScheck inputs as well as detail the construction methods. The conditioned area or building envelope is the first thing that needs to be defined for REScheck inputs. Calculating the areas of the building components (e.g., windows, doors, exterior walls) is easily the most time-consuming step in energy code compliance. Below are some helpful hints for calculating area takeoffs. Note that the concept of the building envelope is important. When calculating area takeoffs: Use dimension lines when available Scale with an architect's scale only if necessary Estimate only if necessary Blueprint. Walls Only measure the wall area in the building envelope Measure the wall height from the finished floor to the insulation in the ceiling Include the wall area between finished floors (e.g., between first and second floor)

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Measure to the outside of the exterior wall for width Windows Exterior - window. Use the rough opening on the building floor plans or window schedule Only count the glazing in the building envelope surrounding conditioned space Doors Use the rough opening on the building floor plans or door schedule Check the door type for opaque vs. glass Only count the doors in the building envelope - between conditioned space and unconditioned space Roof Measure the roof area of the conditioned space at the insulation level Check for vaulted ceilings or other irregular ceiling heights in the building The roof area must be the same as or equal to the building footprint area Skylight Use the rough opening dimensions from the roof plans, floor plans, or the window schedule Raised Floor Measure the area of the floor over unconditioned space or outdoor air Slab Perimeter Measure in linear feet the slab edge of the conditioned space Project, Envelope and Mechanical Tabs Audio: The Project, Envelope, and Mechanical tabs are used to choose the respective screens for data entry of your project. The general project data is entered under the Project Tab screen. The design criteria and specifications of the envelope components such as walls, windows, doors, ceilings and floors are entered in the Envelope Tab screen. The criteria and specifications of the mechanical equipment are entered in the Mechanical Tab screen. Project Tab Audio: Your building's location, construction type (single family or multifamily), and other project details are entered in the Project screen. The location and construction type of your building are necessary for REScheck to determine compliance. If this information is not accurate, the results will not be valid. Click on the Edit Project Details Button to enter optional information such as: Project Location, Project Ownership and Designer. Be sure to save your work! To select the state and city, choose from the drop down list of states and cities. The list of cities was taken from the U.S. Geological Survey's Populated Places (PPL) database (which is part of USGS's Geographic Names Information System). The PPL database contains the name, location (latitude/longitude), elevation, and sometimes the population of over 165,000 locations in the U.S.

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and its possessions, but every city is not listed. The Department of Energy mapped each of the PPL locations to a best available NOAA weather station as a source of heating degree-days, cooling degree-days, and other climate parameters. The REScheck weather file contains the subset of the PPL locations for which the USGS has a population estimate (a little more than 22,000 cities). In this example, we have selected Bowman, South Carolina as the city and state. The project detail screen is optional and has three tabs title/site/permit, owner/agent, and designer/contractor. In the project detail screen, under the title/site/permit tab, we have entered additional information such as the title, street address, and notes for the project. The owner/agent screen and the designer/contractor screen would be filled out in a similar manner as the title/site/permit screen. Save your work. Envelope Tab: Selecting Components Audio: Once you select the envelope tab, there will be building component blue-on-white buttons located under the Project, Envelope and Mechanical tabs. You will select general building components such as ceilings, skylights, walls, windows, doors, basement walls, floors, and crawl space walls that are applicable to your building. Some of the components may not be used. When you select any of these buttons the component is added to the table on the Envelope screen. The table continues to grow as you add new components. You may add as many components as you need to describe your building, including multiple components of the same type. The status bar message at the bottom of the screen explains what type of information goes into the currently selected field. To edit the component name, double-click in the appropriate cell in the Component column.

After you have filled in the information about each component, the program computes the UA of your proposed building and the UA of the code building. The code building has the same dimensions as your building but conforms to the code requirements. If the total UA of your building is less than or equal to the total UA of the code building, your building complies with the code and the Compliance field displays the message "Passes." As you can in addition, you see the UA and the maximum calculated UA, the maximum Solar Heat Gain Coefficient (SHGC) and the proposed SHGC.

Envelope Tab: Ceiling Components Audio: Let’s begin with the first envelope component. Click on the document link in the lower right hand corner of your screen to view the floor plans for our sample project. This includes floor plans and sections of the building. There will be additional plans provided as we input other envelope components. Ceilings include opaque portions of the building envelope that are above conditioned space and are horizontal or tilted at less than 60 degrees from

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horizontal. Select the Ceiling button to add a ceiling component to the description of your design on the Envelope screen. Each unique ceiling assembly should be entered as a separate component, but multiple ceiling elements sharing the same construction may be entered as one component with appropriate total area. To view the types of ceiling assemblies and their definitions, click on the link in the lower right hand corner of the screen. After selecting the Ceiling button, a new ceiling assembly is added to the table and a popup menu is displayed in the Assembly field. Choose from the following ceiling types: Flat Ceiling or Scissor Truss, Cathedral Ceiling (no attic), Raised or Energy Truss, Steel Truss , Steel Joist/Rafter, Structural Insulated Panels, Other. Enter the gross area of the ceiling component in the “Gross Area” field. The gross ceiling area includes the area of all skylights within the ceiling. In this example, the ceiling area in this residence corresponds with the main floor area because the ceilings are flat. If this plan contained vaulted areas, the ceiling area would need to be adjusted for the larger ceiling area created by the vault. The ceiling area should be measured on the slope of the finished interior surface. In this example project, the highlighted areas on the plans and building section show the areas of the house that are conditioned. We have entered 2415 square feet for the ceiling area. If there were skylights, you would link the ceiling to the skylights within that ceiling by using the tree on the left side of the Envelope screen. To link a skylight to a ceiling assembly, drag the skylight label on the tree to the ceiling label and release the mouse.

Enter the R-value of any insulation to be installed in the cavities between ceiling structural members, including all blown in insulation. The insulating values of other parts of the building assemblies (e.g., gypsum board and air films) are accounted for by the program and should not be included. In our example we have entered an R-value of 38 in the table under “Cavity Insulation R-value.” Enter the R-value of any continuous ceiling insulation. Continuous insulation is insulation that runs continuously over structural members and is free of significant thermal bridging; such as rigid foam insulation above the ceiling deck. For ventilated ceilings, insulating sheathing must be placed between the conditioned space and the ventilated portion of the ceiling (typically applied to the trusses or rafters immediately behind the drywall or other ceiling finish material). For structural insulated panels, enter the manufacturer-reported R-value for the entire assembly. If you have selected the “Other” ceiling type option, enter the overall U-factor of the ceiling assembly including exterior and interior air films. Do not include the finished ceiling in the U-factor calculation if the space between ceiling and ceiling structure is used as an HVAC plenum.

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Envelope Tab: Skylights Audio: Skylights are defined as any transparent or translucent section in a building ceiling. The ceiling requirements apply to portions of the roof and/or ceiling through which heat flows. Ceiling components include the interior surface of flat ceilings below attics, the interior surface of cathedral or vaulted ceilings, skylights, or vaulted ceilings, skylights and sloped building assemblies less than 60 degrees from horizontal, but excluding skylight shafts. Any translucent or transparent material in exterior openings of buildings, including windows, skylights, sliding doors, the glass area of opaque doors, and glass block is considered glazing. Glazing that is horizontal or sloped at an angle less than 60 from horizontal is a skylight, while glazing having a slope greater than 60 degrees from horizontal is considered a window. To add a skylight or skylights, after having determined the dimensions, assembly type, U-factor and SHGC, click the Skylight button to add a skylight component to the description of your design on the Envelope screen. Each unique skylight assembly should be entered as a separate component, but multiple skylight elements having the same characteristics may be entered as one component with the appropriate total area. Skylights must be linked to their corresponding ceiling component. Link a skylight to a ceiling by using the tree on the left side of the Envelope screen. Drag the skylight label on the tree to the ceiling label and release the mouse. Envelope Tab: Exterior Wall Components Audio: In the Envelope Tab, select the Wall button to add an above-grade wall component to the description of your design. Each unique above-grade wall assembly should be entered as a separate component, but multiple wall elements sharing the same construction may be entered as one component with the appropriate total area. You will need to calculate the area of exterior walls. You can calculate each wall individually or combine the areas when they are of the same construction. For example, the walls in a two story home can be entered two walls or if the walls are all the same construction and are all above grade, you can add all the walls together and show all of your windows under the one wall entry in REScheck. Select the assembly type from the drop down box in the assembly column. Enter the gross area of the wall component in the “Gross Area” field. (Note, you can change the name of the wall by right clicking and editing the text). The gross wall area also includes the peripheral edges of floors (the area of the band joist and subfloor between floors). The gross wall area includes the area of all windows and doors within the wall. You must link the wall to the windows and doors within that wall by using the tree on the left side of the Envelope screen (the process used to do this is detailed in the Windows section).

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Click on the document link in the lower right hand corner of your screen to view more plans for our sample project. This includes floor plans, sections and calculations for the exterior walls of the building. Click on the document link in the lower right hand corner of your screen to view and print the floor plans. In our example, the highlighted sections on the main floor plan show the ceiling heights in various areas of the residence. The area of the exterior walls will depend on the ceiling height of the space that the wall encloses. The perimeter length of the exterior wall enclosing the space is multiplied by the wall height for the given area. This wall height includes the depth of the rim joist. The knee walls between the 9 foot ceiling and 12 foot ceiling sections also enclose the conditioned space. In our project, we have calculated all of the area for each wall, and each compass direction). North = 911 Square Feet South = 834 Square Feet East = 576 Square Feet West = 701 Square Feet

The gross area of any individual wall of a conditioned basement with an average depth less than 50% below grade should be entered as a wall (not as a basement). In this case, the gross wall area includes the below-grade portion of the wall and the areas of doors and windows within those walls. On the “walkout” side of the basement is an exterior wood wall with windows and doors and is entered as a “wood frame wall – 16 inches on center.” The perimeter length of this wall is 93 feet. This length multiplied by the basement wall height of 9’ equals 837 square feet and will be added to the “North” Square Footage for a total of 1748 square feet. Enter the R-value of any insulation to be installed in the cavities between above-grade wall structural members. The insulating values of other parts of the building assembly (e.g., gypsum board and air films) are accounted for by the program and should not be included. Enter the R-value of any continuous insulation in the above-grade wall. Continuous insulation is continuous over framing members or furring strips and is free of significant thermal bridging. The R-values of other parts of the building assembly (example, gypsum board and air films) are accounted for by the program and should not be entered. Insulating sheathing installed on the exterior of above-grade walls is an example of continuous insulation. For structural insulated panels and insulated concrete forms, enter the manufacturer-reported R-value for the entire assembly. If you have selected the Other wall type, enter the overall U-factor of the above-grade wall assembly including exterior and interior air films. Envelope Tab: Window Components Audio: Windows are defined as any transparent or translucent section in an exterior building wall including glass block but excluding glass doors (which are

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entered using the Door button). Glazing having a slope greater than 60 degrees from horizontal is considered a window while glazing having a slope less than 60 degrees from horizontal is considered a skylight. Click the Window button to add a window component to the description of your design on the Envelope screen. Select the window assembly type from the drop down box. Each unique window assembly should be entered as a separate component, but multiple window elements having the same characteristics may be entered as one component with an appropriate total area. Windows must be linked to their corresponding wall component. Link a window to a wall by using the tree label on the left side of the Envelope screen. Drag the window or door label on the tree to the wall label and release the mouse. Windows in the exterior walls of conditioned basements should be included in the table and should be linked to their corresponding basement wall assembly. Windows in unconditioned basements are NOT included.

To link a window or door to a wall, drag the window or door label on the tree to the wall label and release the mouse. Enter the area of the entire window component in square feet in the Gross Area field. Window area is the interior surface area of the entire assembly, including glazing, sash, curbing, and other framing elements. The nominal area or rough opening is also acceptable for flat windows. Enter the U-factor for each component in its corresponding U-Factor field. U-factors for glazing must be tested and documented by the manufacturer in accordance with the National Fenestration Rating Council (NFRC) test procedure or taken from the default glazing U-factors table in the default tables. Center-of-glass U-factors cannot be used.

If an overhang exists, select the Overhang Projection Factor column. Enter the overhang’s projection factor (ratio of the overhang width to the overhang height above the window sill).

Click on the document link in the lower right hand corner of your screen to

view more plans for our sample project. This includes elevations and calculations for the window areas of the building. In our example we have assumed that only one window type is used; Vinyl Frame, Double Pane. We have added to the North Wall tree windows with Gross area of 389 Square Feet, to the South Wall, 149 Square Feet and to the West Wall, 15 Square Feet.

◘ Windows are defined as any transparent or translucent section in an exterior

building wall including glass block but excluding glass doors

◘ Glazing having a slope greater than 60 degrees from horizontal is considered

a window

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◘ Glazing having a slope less than 60 degrees from horizontal is considered a

skylight.

Envelope Tab: Door Components Audio: Doors include all operable opaque assemblies located in exterior walls of the building envelope. Doors with glass can be treated as a single door assembly, in which case an aggregate U-factor (a U-factor that includes both the glass and the opaque area) must be used; OR the glass area of the door can be included with the other glazing and an opaque door U-factor can be used to determine compliance of the door. There are two doors types: Solid (under 50% glazing)- Exterior doors that are mostly opaque (example, glass covers 50% or less of the door's area), Glass (over 50% glazing) - Exterior doors that are mostly glazed (example, glass covers more than 50% of the door's area). Door assemblies will often include sidelites. Decorative door sidelites can be included with the door area and U-Factor, if an aggregate U-factor is known for the entire assembly (the door plus all sidelites). If the U-factor rating does not include the sidelites, enter the sidelites separately as windows and use a default glazing U-factor from the default tables Click the door button to add a door component to the description of your design on the Envelope screen. Each unique door assembly should be entered as a separate component, but multiple door elements sharing the same construction may be entered as one component with the appropriate total area. Doors must be linked to their corresponding wall component. Link a Door to a wall by using the tree label on the left side of the Envelope screen. Drag the window or door label on the tree to the wall label and release the mouse. Choose from the dropdown box the type of door; solid or glass. In our example all the doors are solid. Enter the total area of the door in square feet including any glazed portions in the Gross Area field, the nominal area or rough opening is also acceptable. Enter the U-Factor of the door and if the door is glass you will also enter the Solar Heat Gain Coefficient. In our example we have 40 Square feet of door in the North Wall and 40 Square Feet in the South Wall. Orientation Audio: Orientation is optional in REScheck. If an orientation has been assigned to each wall, window, door, and below-grade wall assembly, the compliance calculation will be based on a proposed building using those orientations. This result may be slightly different than the result obtained when orientation is not specified. In the latter case, assemblies are assumed to be equally distributed according to a code-specified aspect ratio. The orientation-specific compliance calculation will not be performed until all assemblies have been assigned an orientation. Orientation and Projection Factors are not available unless the project is in a location of less than 3500 heating degree days. The reason these

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options is that the program offers credit only towards a mandatory solar heat gain coefficient (SHGC) of 40. When you select an orientation you select the compass direction to a wall (Front Face) and then the other walls orientation is selected to the Front Face. Select “Options” “Orientation” to enable the Front Faces drop list for the building and create the Orientation column for walls, windows, doors, and basement walls. For walls, use the Orientation column to select the wall’s orientation relative to the front of the building. Any windows or doors entered belonging to a wall with a set orientation will have the same orientation as the parent wall. Front Faces represents the angle of the front face of the building relative to North. If the building front faces North, the building orientation will be 0 degrees; if the building front faces East, this will be 90 degrees and so on. Select one of the eight cardinal points in the drop list or choose Custom. Custom allows the user to specify an angle (in degrees) by rotating the building using a diagram. Select “Options” “Overhang Projection Factor ” to create the Overhang Projection Factor column. Enter the overhang’s projection factor (ratio of the overhang width to the overhang height above the window sill). The projection factor enables you to characterize the shading impact of horizontal overhangs or canopies that project outward from the plane of the window. The projection factor is the ratio of the distance the overhang projects from the window surface to its height above the sill of the window it shades. Overhang Projection Factor = the distance to edge of overhang (A), divided by the distance to bottom of window sill (B). In the figure shown, A /B = Projection Factor Envelope Tab: Basement Wall Components Audio: Any individual wall of a conditioned basement with an average depth of 50% or more below grade should be entered using the Basement button. Walls of conditioned basements with an average depth of LESS than 50% below grade should be entered as an above-grade wall using the Wall button. Click the Basement button to add a basement wall component to the description of your design on the Envelope screen. Each unique basement wall assembly should be entered as a separate component, but multiple basement wall elements sharing the same construction may be entered as one component with the appropriate total area. After selecting a basement wall type assembly, a basement wall illustration will appear with input boxes for the basement wall height, depth below

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grade, and depth of insulation. The illustration helps identify the dimensions being requested. You may enter basement wall dimensions directly into this illustration and select the OK button to have them transferred to the corresponding row in the table on the Envelope screen. If you prefer to enter the dimensions directly into the table on the Envelope screen, you can select Cancel to remove the illustration without entering dimensions. To view the basement wall illustration and inputs at a later time, click the right-mouse button anywhere on the basement row and select Edit Basement Inputs from the popup menu.

Click on the document link in the lower right hand corner of your screen to view more plans for our sample project. This includes plans and calculations for the basement wall areas of the building. In this example project, the “side” basement walls are assumed to be more than 50% below grade so the entire wall is considered a “below grade basement wall (solid masonry)”. The side basement walls are assumed to be 4 ½ feet below grade. This assumption takes the average of the front of the wall that is totally above grade and the back section which is 9 feet below grade. The perimeter length of these side walls equals 40 feet (360 square feet). The “back” basement wall, south basement wall, is totally below grade and is considered a “below grade basement wall”. The “back basement wall is assumed to have 7 feet of the 9 foot basement wall below grade (the 2 feet above grade portion is the crawlspace section adjacent to the basement wall) and the length is 76 feet (684 square feet). The area of all the below grade basement walls is 1044 square feet (116 feet times 9 feet). Envelope Tab: Floor Components Audio: There are four types of inputs that are made for floors; Slabs on Grade, All-Wood Joist or Truss, Structural Panels and Other. These types of floors are further subdivided into heated or unheated for slabs on grade and over conditioned space or over outside air for the other types. Each unique exposed floor assembly should be entered as a separate component, but multiple floor elements sharing the same construction may be entered as one component with the appropriate total area. Floors over conditioned basements and conditioned crawl spaces (those that are heated and cooled) are not required to be accounted for or insulated to meet code. Edges of slab floors over 12" below grade (such as basement floors) are required to be insulate and do not need to be entered in the software. A substantial amount of heat is lost through an uninsulated slab, resulting in cold, uncomfortable floors. Even if the foundation wall is insulated vertically under the slab, significant heat is still lost from the slab edge that is closest to the cold outside air. Click the Floor button to add a Floor. You will see a dropdown box with the four choices of floor and a choice for each type; heated or unheated for slabs on grade and over conditioned space or over outside air for the other types. Enter

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the gross area of the floor (in square feet) where it separates conditioned from unconditioned space. For slabs-on-grade, enter the perimeter (in linear feet) which should include the length of all edges of a slab foundation that are part of the building envelope and are less than 12" below grade. For Insulation installed between structural members, enter the R-value of any insulation to be installed in the cavities between floor structural members. The insulating values of other parts of the building assembly (example, subfloor and air films) are accounted for by the program. If you have selected the “Other” floor type option, you must enter the overall U-factor of the floor assembly including exterior and interior air films.

In our example the basement is conditioned and there is no inputs for the

floor over the basement. There is a floor over the crawlspace with is explained in the next lesson. If the floor is a slab and after selecting a slab type, an illustration of various slab configurations will appear with an input box for the depth of insulation. The illustration helps identify the dimension being requested for various insulation configurations. Enter the depth in feet of the insulation you intend to install as measured from the top of the slab to where the insulation stops. This distance should include the total vertical plus horizontal distance. You may enter the depth of insulation directly into this illustration and select the OK button to have it transferred to the corresponding row in the table on the Envelope screen. If you prefer to enter the insulation depth directly into the table on the Envelope screen, you can select Cancel to remove the illustration without entering a value. To view the slab illustration at a later time, click the right-mouse button anywhere on the slab row and select Edit Slab Inputs from the popup menu. In our example, the perimeter edge of the slab measures 93 feet. Envelope Tab: Crawl Space Wall Components Audio: A properly sealed, moisture-protected, and insulated crawlspace will increase comfort, save on energy costs, improve the durability of the home, and reduce entry of moisture, radon, and other potential irritants or pollutants into the home as will the proper separation of the crawlspace when vented from the building envelope. The REScheck crawl space wall insulation requirements are for the exterior walls of unventilated crawl spaces (not directly vented to the outside) below uninsulated floors. If you are insulating the floor above the crawl space, do not use the crawl space walls option. In our example we are insulating the floor, not the walls and need to enter the necessary inputs for the floor above the crawlspace to show compliance.

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Click the Crawl Wall button to add a crawl space wall component to the description of your design on the Envelope screen. Each unique crawl space wall assembly should be entered as a separate component, but multiple crawl space wall elements sharing the same construction may be entered as one component with the appropriate total area. After selecting a crawl space wall type, a crawl space wall illustration will appear with input boxes for the crawl space wall height, depth below grade, depth of insulation, and depth below inside grade. The illustration helps identify the dimensions being requested. You may enter crawl space wall dimensions directly into this illustration and select the OK button to have them transferred to the corresponding row in the table on the Envelope screen. If you prefer to enter the dimensions directly into the table on the Envelope screen, you can select Cancel to remove the illustration without entering dimensions. To view the crawl space wall illustration and inputs at a later time, click the right-mouse button anywhere on the crawl space row and select Edit Crawl Inputs from the popup menu.

In our example, the floor is insulated between the floor joists. If the crawlspace wall had been insulated rather than the floor above the crawlspace, the perimeter length of the foundation stem wall would have been entered with the “crawlspace” tab (as a crawlspace wall) in REScheck. Click on the document link in the lower right hand corner of your screen to view more plans for our sample project. This includes plans documenting the crawl space areas and slab perimeter of the building.

The area of the crawlspace is highlighted in the floor plan which is 783 square feet. Mechanical Tab Audio: REScheck does not allow tradeoffs for ground source heat pumps, forced hot water, and some other systems in the Mechanical folder. The software does allow tradeoffs with air source heat pumps, fossil fuel furnaces, boilers, and air conditioners. REScheck makes only the most common equipment types available for tradeoff (those types which are covered by Federal appliance standards and are rated with an AFUE, SEER, or HSPF). Other systems such as radiant floors, geothermal heat pumps, evaporative coolers, and others require complex calculations not available in REScheck. These systems can receive tradeoff credit only through a whole-house performance (Chapter 4) analysis. It should be noted that you do NOT have to enter mechanical equipment information at all unless you are using such equipment in a tradeoff. Completion of this section of the software is entirely optional. Simply do not fill out the Mechanical folder at all; the software will judge compliance based only on your

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envelope inputs. However, using high-efficiency HVAC equipment may improve the percentage by which your building compares with the code building.

Although mechanical information is not required in REScheck, building codes do have requirements for mechanical equipment, which may include sizing of equipment, thermostats, piping insulation, duct insulation and others and the energy code does have prescriptive requirements such as minimum duct insulation.

Click the Boiler button to add a boiler component to the description of your design on the Mechanical screen. You have a choice of “Gas-Fired Steam or Other. For our example we are using gas fired steam. Minimum-required heating and cooling equipment efficiencies are displayed in the Minimum Efficiency column. If the efficiency of the equipment you plan to install exceeds these minimums, you qualify for the high-efficiency equipment credit. The high-efficiency equipment credit is applied as a percent increase in the code house U factor times area (UA). To see how much credit you are getting, observe the UA value displayed in the Maximum UA field. The UA will probably be smaller before taking the credit for the mechanical equipment.

In our example we are using a more efficient boiler. Note that the boiler

that meets code measured as annual fuel utilization efficiency, (75 AFUE) shows on the compliance bar that the design is 2.5 percent better than code. We are going to enter an annual fuel utilization efficiency of 95 which if you look at the compliance bar shows that the design is now 22.5 percent better than code.

Click the Air Conditioner button to add an Air Conditioner component to the description of your design on the Mechanical screen and the only choice is electric. Minimum-required heating and cooling equipment efficiencies are displayed in the Minimum Efficiency column. In our example we are using a more efficient Air Conditioner. Note that the Air Conditioner that meets code measured as seasonal energy efficiency ratio (13 SEER) will not change how much the design is better than code. We are going to enter a seasonal energy efficiency ratio of 15 which if you look at the compliance bar shows that the design is now 24.5 percent better than code! Checking Compliance Audio: Successful code compliance utilizing REScheck requires that the building designer, engineers or architect who manipulates the information and uses the program has an understanding of the Energy Code and REScheck. When correctly done, the program continually performs a simple U-factor times Area (UA) calculation for each building assembly to determine the overall UA of your building. The UA that would result from a building conforming to the code requirements is compared against the UA for your building. If the total heat loss (represented as a UA) through the envelope of your building does not exceed the total heat loss from the same building conforming to the code, then the software

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declares that you pass. At the bottom of the screen is the compliance bar. On the bar it shows compliance and if the building passes, the Maximum UA and the design (your) UA. In addition the bar shows how much better in terms of percentage the design is to code. The bar also shows the Maximum SHGC and the design (your) SHGC. When you have completed the design (in this basic course we have not delved into trade-offs, only simple inputs) you will need to save your work and print or email your report and inspection list. Check on File and you will see that you have a choice of View/Print Report or Email Report. When you choose View/Print Report you will have a choice to View/Print the Compliance Certificate and/or the Inspection Checklist. When you choose Email Report you will see a field screen to fill in information required to email the Compliance Certificate and/or the Inspection Checklist. If you are the building designer, engineers or architect you will need to know from the local building department what information you need for a permit application and the format that is required. The building department plans examiners and inspectors must have an understanding of the Energy Code and REScheck. The plans examiner may check the design using REScheck, may review the Compliance Certificate and compare it to the plans and specifications or both. The inspectors should use the building codes, the Energy Code, the permit plans and specifications and the Inspection Checklist to conduct all required periodic inspections on the building and building systems. Click on the PDF Symbol on the bottom right half of your screen to review the inspection report. Successful code compliance utilizing REScheck requires that the building designer, engineers or architect who manipulates the information and uses the program has an understanding of the Energy Code and REScheck. The plans examiner may check the design using REScheck, may review the Compliance Certificate and compare it to the plans and specifications or both. The inspectors should use the building codes, the Energy Code, the permit plans and specifications and the Inspection Checklist to conduct all required periodic inspections on the building and building systems. Conclusion The Florida Building Code- Energy is recognized by the Department of Energy as one of the most modern and progressive codes in use today in the country. The Legislature required the Florida Building Commission to compare the Florida Building Code- Energy to the International Energy Conservation Code (IECC), as well as ASHRAE 90.1 and 90.2 to ensure that the code remains progressive. The newly readopted Florida Building Code- Energy provides more energy efficiency. The code changes are efficient, consistent, understandable and enforceable for the full spectrum of Energy Code users.

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The Florida Building Code- Energy provides clear information for the design of buildings and the steps as well as forms needed to show compliance and obtain permits. Congratulations, you have completed the Advanced Florida Building Code: Understanding the Florida Building Code- Energy . The Florida Building Code- Energy is recognized by the Department of Energy as one of the most modern and progressive codes in use today in the country. The Florida Building Code- Energy provides clear information for the design of buildings and the steps as well as forms needed to show compliance and obtain permits Congratulations, you have completed the Advanced Florida Building Code: Understanding the Florida Building Code- Energy .

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Questions and Answers Lesson 1 THE FLORIDA BUILDING CODE- ENERGY : AN INTRODUCTION AND HISTORY Mandate to Adopt the IECC 1. The Florida Building Code- Energy is based on the International Energy

Conservation Code True/ False Answer/ False Governor Christ’s Executive Order 2007-127 2. The Executive Order signed by Governor Crist required that the Florida

Building Code- Energy for Building Construction increase the energy performance of new construction in Florida by at least ___ percent.

a) 10 b) 30 c) 15 Answer/ 15 The Examination and Significant Changes 3. Which of the following is false? The Commission also compared the

Florida Building Code- Energy to; a) International Energy Conservation Code b) ASHRAE 90.1 c) ASHRAE 90.2 d) South Florida Building Code- Energy

Answer/ d Lesson 2 ADMINISTRATION AND ENFORCEMENT Scope- Section 101.2 4. The Florida Building Code- Energy can be amended by a city or county. True/ False Answer/ False Scope- Sections 101.2 5. The intent of the Florida Building Code- Energy is to regulate the design

of building envelopes for adequate thermal resistance and low air leakage. True/ False Answer/ True Lesson 3 EXISTING BUILDINGS Exempt Buildings 6. The Florida Building Code- Energy does not apply to federal buildings or

qualified historical buildings.

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True/ False Answer/ True Exempt Buildings 7. Hunting cabins less than l,000 square feet is not exempt from the Florida

Building Code- Energy . True/ False Answer/ False Historic buildings 8. If designated a historic building they are exempt from the Florida Building

code- Energy . True/ False Answer/ True Change in use or occupancy 9. : The Florida Building Code- Energy does define a change of use True/ False Answer/ True Lesson 4 PERMITS Prescriptive versus Performance Criteria 10. The Florida Building Code- Energy allows ______ and ______ methods

for Commercial and Residential applications. a) Prescriptive b) Performance c) All of the above d) None of the above Answer/ c Above code programs 11. The Florida Building Code Energy does not permit above code programs. True/ False Answer/ False Buildings with multiple occupancy types 12. When a building contains more than one occupancy type, each portion of

the building must conform to the requirements for the occupancy housed therein.

True/ False Answer/ True Code compliance certification

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13. The building’s owner, the owner’s architect, or other authorized agent legally designated by the owner shall certify that the building is in compliance with the code,

True/ False Answer/ True Air sealing and insulation 14. The Florida Building Code- Energy requires an air sealing inspection

a) Required b) Not required c) Required instead of a blower door d) Can be certified Answer/c Certifications required 15. For Commercial buildings Architects or Engineers licensed to practice in

the state of Florida must prepare the forms or utilize the software to demonstrate compliance with the Energy code.

True/ False Answer/ True Certifications required 16. For single-family residential dwellings, duplexes and townhouses less

three stories and less in height, Architects or Engineers licensed to practice in the state of Florida must prepare the forms or utilize the software to demonstrate compliance with the Energy code.

True/ False Answer/ False

Lesson 5 INSPECTIONS Required inspections 17. The only inspections called out in the Florida Building Codes related to

Energy Code Compliance are insulation and the building final. True/ False Answer/ True Energy performance level (EPL) display card 18. Florida statutes requires the EPL display card be included as an

addendum to each sales contract executed after January 1, 1994, for both presold and nonpresold residential buildings.

True/ False Answer/ True Blower door test In order to pass a blower door test for envelope tightness and insulation when tested air leakage is less than seven air changes per hour when tested at a

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pressure of 50 pascals. Blower door test

19. In order to pass a blower door test for envelope tightness and insulation when tested air leakage is less than seven air changes per hour when tested at a pressure of ___ pascals

a) 20 b) 25 c) 40 d) 50 Answer/d

Efficiency and maintenance information 20. An operating and maintenance manual has to be provided to the building

owner for all commercial buildings. True/ False Answer/ True