IECC 2012 Code

Stuart Pieloch R C Lurie623-299-0617 spieloch@rclurie.com

R.C.Lurie Company is a Registered Provider with

The American Institute of Architects Continuing Education Systems. Credit earned

on completion of this program will be reported to CES Records for AIA members.

Certificates of Completion for non-AIA members are

available on request. This program is registered with the AIA/CES

for continuing professional education. As such, it does not include content that may be

deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of

handling, using, distributing, or dealing in any material or product.

Questions related to specific materials, methods, and services will be addressed at the

conclusion of this presentation. 

IECC 2012 Code Learning Objectives

1.       Design code compliant Occupancy Sensor solutions for rooms with ‘4 walls and 1 door’.

 2.       Design code compliant Lighting Control relay panel solutions for automatic sweep off

controls. 

3.       Design manual daylighting control zones and use lighting control panels to meet code

for these areas. 

4.       Understand the triggers for automatic daylighting control requirements based on

skylight and fenestration area

IECC 2012 CodeCommercial Energy Efficiency

C404 - SERVICE WATER HEATING (Mandatory)

C405 - ELECTRICAL POWER AND LIGHTING SYSTEMS (MANDATORY)C406 - ADDITIONAL EFFICIENCY PACKAGE OPTIONS

C407 - TOTAL BUILDING PERFORMANCE

C408 - SYSTEM COMMISSIONING

C401 - GENERAL

C402 - BUILDING ENVELOPE REQUIREMENTS

C403 - BUILDING MECHANICAL SYSTEMS

C402 - BUILDING ENVELOPE REQUIREMENTSC402.3.1 Maximum area. The vertical fenestration area (not including opaque doors and opaque spandrel panels) shall not exceed 30 percent of the gross above-grade wall area. The skylight area shall not exceed 3 percent of the gross roof area.C402.3.1.1 Increased vertical fenestration area with daylighting controls. In Climate Zones 1 through 6, a maximum of 40 percent of the gross above-grade wall area shall be permitted to be vertical fenestration, provided:1. No less than 50 percent of the conditioned floor area is within a daylight zone;

2. Automatic daylighting controls are installed in daylight zones; and3. Visible transmittance (VT) of vertical fenestration is greater than or equal to 1.1 times solar heat gain coefficient (SHGC). 

Exception: Fenestration that is outside the scope of NFRC 200 is not required to comply with Item 3.C402.3.1.2 Increased skylight area with daylighting controls. The skylight area shall be permitted to be a maximum of 5 percent of the roof area provided

automatic daylighting controls are installed in daylight zones under skylights.

< 30% Glazing

< 3% Skylights

Manual Daylighting Controls

C402.3.2.1 Exception spaces where the designed general lighting power densities

areLess than 0.5 Watts per square foot.

C402.3.2 When an enclosed space is greater than 10,000 square feet with a

ceiling height greater than 15 ft skylights and

daylighting controls are required.

C408 - SYSTEM COMMISSIONINGC408.3 Lighting system functional testing. Controls for automatic lighting systems shall comply with Section C408.3. C408.3.1 Functional testing. Testing shall ensure that control hardware and software are calibrated, adjusted, programmed and in proper working condition in accordance with the construction documents and manufacturer’s installation instructions. The construction documents shall state the party who will conduct the required functional testing. Where required by the code official, an approved party independent from the design or construction of the project shall be responsible for the functional testing and shall provide documentation to the code official certifying that the installed lighting controls meet the provisions of Section C405. 

Where occupant sensors, time switches, programmable schedule controls, photosensors or daylighting controls are installed, the following procedures shall be performed:1. Confirm that the placement, sensitivity and time-out adjustments for occupant sensors yield acceptable performance.2. Confirm that the time switches and programmable schedule controls are programmed to turn the lights off.3. Confirm that the placement and sensitivity adjustments for photosensor controls reduce electric light based on the amount of usable daylight in the space as specified. 

“approved party independent from the design or construction

of the project shall be responsible for the functional testing”

3rd party Commissioning agents

C405 - ELECTRICAL POWER AND LIGHTING SYSTEMS (MANDATORY)C405.1 General (Mandatory).

C405.2 Lighting controls (Mandatory).

C405.3 Tandem wiring (Mandatory).

C405.4 Exit signs (Mandatory).

C405.5 Interior lighting power requirements (Prescriptive).

C405.6 Exterior lighting (Mandatory).

C405.7 Electrical energy consumption (Mandatory).

EXCEPT where high-frequency ballasts are used

Use electronic ( high-frequency ) ballastsInternally illuminated exit signs shall not exceed 5 watts per side. 

Use LED exitsINTERIOR LIGHTING POWER ALLOWANCES: BUILDING AREA METHOD 

 SPACE-BY-SPACE METHOD  INDIVIDUAL LIGHTING POWER ALLOWANCES FOR BUILDING EXTERIORS 

C405.2 Lighting controls (Mandatory). C405.2.1 Manual lighting controls.

C405.2.1.1 Interior lighting controls. C405.2.1.2 Light reduction controls.

C405.2.2 Additional lighting controls. C405.2.2.1 Automatic time switch control devices. C405.2.2.2 Occupancy sensors.

C405.2.2.3 Daylight zone control. C405.2.2.3.1 Manual daylighting controls. C405.2.2.3.2 Automatic daylighting controls. C405.2.2.3.3 Multi-level lighting controls.

C405.2.3 Specific application controls. C405.2.4 Exterior lighting controls.

Except : Occupancy Sensors

Except : Occupancy Sensors

C405.2.2.2Occupancy Sensors are required in all

Rooms 300 sq ft or less

Restrooms

Private Offices ClassroomsConference rooms Meeting rooms

Lunch Rooms Break RoomsStorage Rooms Janitorial Closets

Vacancy Sensor Switch – Line Voltage

• Manual On – Auto Off

• Manual off switch

4 Walls 1 Door up to 3 Light fixtures

Ceiling Motion Sensor + Power Pack + Manual on Switch

• Manual On – Auto Off

• Manual off switch

4 Walls 1 Door up to 900 sq ft

C405.2.2.1 Automatic time switch control devices.

• Automatic time switch controls shall be installed to control lighting in all areas of the building. ( Except where you have Occ Sensors )

Many walls Many doors

Up to 5000 sq ft per zone

Relay Panels and Low Voltage Switches

Relay PanelRelay Panel Schedule

Multiple Buttons

Multiple Colors

Low Voltage Switches

C405.2.2.3 Daylight zone control.

• Switched separately from non-daylit zones

• Up to 2500 sq ft per zone

• Manual controls are acceptable

C405.2.2.3.1 Manual daylighting controls. Manual controls shall be installed in daylight zones unless

automatic controls are installed in accordance with C405.2.2.3.2 Automatic daylighting controls.

(C405.2.2.3.2 Continuous dimming or multilevel switching)

4 Walls 1 Door Occupancy Sensor

Up to 5,000 sq ft ‘sweep off’ zones

Got Windows or Skylights?

Daylight zone switched separate

C405.2.4 Exterior lighting controls Lighting not designed for dusk to dawn operation shall be controlled by either a combination

of a photosensor and a time switch, or an astronomical time switch. Lighting designatedfor dusk to dawn operation shall be controlled by an astronomical time switch or photosensor.

C405.6.2 Exterior Lighting ZonesLighting Zone 1 Developed areas of national parks, state parks, forest land, and

rural areas

Lighting Zone 2 Areas predominantly consisting of residential zoning, neighborhood business districts, light industrial with limited nighttime use and residential mixed use areas

Lighting Zone 3 All other areas

Lighting Zone 4 High-activity commercial districts in major metropolitan areas as designated by the local land use planning authority

C405.6.2 POWER ALLOWANCES FOR BUILDING EXTERIORS

Non-tradable Building facadesAutomated teller machines and night depositoriesEntrances and gatehouse inspection stations at guarded facilitiesLoading areas for law enforcement, fire, ambulance and other emergency vehiclesDrive-up windows/doors Parking near 24-hour retail entrances

What areas are covered under exterior lighting allowances?Tradable surfacesCommon exterior lighted needs that can be traded for other needs.For example, wattage allowed for parking lot lighting can be “traded” and used for canopy lighting.

Nontradable surfacesLess common exterior lighted needs that cannot be traded for other needs.These applications have more specific security or task illuminance needs.

C405.6.2 POWER ALLOWANCES FOR BUILDING EXTERIORS     Zone 1 Zone 2 Zone 3 Zone 4

Base Site Allowance

  500 W 600 W 750 W 1300 W

Tradable Surfaces Uncovered Parking Areas

  Parking areas and drives 0.04 W/ft2 0.06 W/ft2 0.10 W/ft2 0.13 W/ft2

  Building Grounds

  Walkways less than 10 feet wide

0.7 W/linear foot

0.7 W/linear foot

0.8 W/linear foot

1.0 W/linear foot

  Walkways 10 feet wide or greater

0.14 W/ft2 0.14 W/ft2 0.16 W/ft2 0.2 W/ft2

  Plaza areas

  Special Feature Areas

  Stairways 0.75 W/ft2 1.0 W/ft2 1.0 W/ft2 1.0 W/ft2

  Pedestrian Tunnels 0.15 W/ft2 0.15 W/ft2 0.2 W/ft2 0.3 W/ft2

    Zone 1 Zone 2 Zone 3 Zone 4

Untradeable Surfaces

Building Entrances and Exits

 

Main entries

20 W/linear foot of door width

20 W/linear foot of door width

30 W/linear foot of door width

30 W/linear foot of door width

 

Other doors

20 W/linear foot of door width

20 W/linear foot of door width

20 W/linear foot of door width

20 W/linear foot of door width

  Entry Canopies 0.25 W/ft2 0.25 W/ft2 0.4 W/ft2 0.4 W/ft2

  Sales Canopies

  Free-standing and attached 0.6 W/ft2 0.6 W/ft2 0.8 W/ft2 1.0 W/ft2

  Outdoor Sales

  Open areas (including

vehicle sales lots) 0.25 W/ft2 0.25 W/ft2 0.5 W/ft2 0.7 W/ft2

  Street frontage forvehicle sales lots inaddition to “openarea” allowance No allowance 10 W/linear foot 10 W/linear foot 30 W/linear foot

Thank you for your time