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Implementing Rain WaterHarvesting into Building
Construction in VA
Presented by:
Guy Tomberlin, CBO
Code Specialist III
Fairfax CountyDPWES, Land Development Services (LDS)
Moving Rain Water Harvesting to the Mainstream
October 22, 2008
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ObjectivesObjectives
Identify potential Rain Water Harvesting issues related to theadopted building codes in VA.
Illustrate areas of building code application through actual
examples of Rain Water Harvesting systems. Discuss and provide solutions to key areas of concern with
Rain Water Harvesting.
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Four key interfaceareas implementing
Rain Water Harvesting
with the VA BuildingCodes
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Implementation of RainImplementation of RainWater HarvestingWater Harvesting
1. Location of the installation:
The built environment (existing locations)
New construction
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Implementation of RainImplementation of Rain
Water HarvestingWater Harvesting
2. The type of the installation:
Commercial
Residential
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Implementation of RainImplementation of Rain
Water HarvestingWater Harvesting
3. The point of utilization:
Outside (typically nonbuilding use related) Irrigation
Inside Plumbing fixtures, fire sprinkler systems, etc..
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Implementation of RainImplementation of Rain
Water HarvestingWater Harvesting
4. The quality of the water:
Potable
NonPotable
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How do we helpHow do we help
make Rainmake RainWaterWater
ImplementationImplementation
possible?possible?
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Partnerships andartners ps an
wworking together!orking together!
Health DepartmentDesigner/Customer
Site Regulation & Enforcement
Building Code Regulation & Enforcement(Possibly the Office of the Fire Marshal)
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The Building CodeThe Building Code
ElementElement
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Building Code RegulationsBuilding Code Regulations
VAVA -- Uniform Statewide Building CodeUniform Statewide Building Code(USBC)(USBC)
The document used to enforcebuilding code provisions across
the Commonwealth as set forthby the Code of Virginia.
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USBCUSBC Established in 1972. Updated approximately every 3 years.
Currently references the 2006 edition of the InternationalCode Council (ICC) family of codes.
International Plumbing Code (IPC)
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IPC RequirementsIPC Requirements
601.1 Scope. This chapter shall govern the materials,
design and installation of water supply systems, both hot
and cold, for utilization in connection with human
occupancy and habitation and shall govern the
installation of individual water supply systems.
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IPC RequirementsIPC Requirements
602.2 Potable water required. Only potable water shall be
supplied to plumbing fixtures that provide water for drinking,
bathing or culinary purposes, or for the processing of food,
medical or pharmaceutical products. Unless otherwise
provided in this code, potable water shall be supplied to all
plumbing fixtures.
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IPC RequirementsIPC Requirements
602.3 Individual water supply. Where a potable public water supply isnot available, individual sources of potable water supply shall beutilized.
602.3.1 Sources. Dependent on geological and soil conditions and theamount of rainfall, individual water supplies are of the following types:drilled well, driven well, dug well, bored well, spring, stream orcistern. Surface bodies of water and land cisterns shall not be sourcesof individual water supply unless properly treated by approvedmeans to prevent contamination.
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IPC RequirementsIPC Requirements
608.1 General. A potable water supply system shall be designed,installed and maintained in such a manner so as to prevent
contamination from nonpotable liquids, solids or gases being
introduced into the potable water supply through cross-connections or
any other piping connections to the system. Backflow preventerapplications shall conform to Table 608.1, except as specifically stated
in Sections 608.2 through 608.16.10.
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IPC RequirementsIPC Requirements
608.8 of potable and nonpotable water. In all buildingswhere two or more water distribution systems, one potable
water and the other nonpotable water, are installed, each
system shall be identified either by color marking or metaltags in accordance with Sections 608.8.1 through 608.8.3.
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IPC RequirementsIPC Requirements
1101.2 Where required. All roofs, paved areas, yards,courts and courtyards shall drain into a separate storm sewersystem, or a combined sewer system, or to an approvedplace of disposal. For one- and two-family dwellings, and
where approved, storm water is permitted to discharge ontoflat areas, such as streets or lawns, provided that the stormwater flows away from the building.
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USBCUSBC CodeCode
ModificationsModifications
106.3 Issuance of modifications. Upon written application by an owneror an owners agent, the building official may approve a modification of
any provision of the USBC provided the spirit and functional intent of the
code are observed and public health, welfare and safety are assured. The
decision of the building official concerning a modification shall be made
in writing and the application for a modification and the decision of the
building official concerning such modification shall be retained in the
permanent records of the local building department.
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Residential ScenarioResidential Scenario
Location on property
Building code safety issues
Freezing
Overflow
Environment
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Backflow Protection and FilterBackflow Protection and Filter
SystemsSystems
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Location of systemLocation of system
componentscomponents
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Storage LocationStorage Location
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InstallationInstallation
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Potable and NonPotable and NonPotablePotable
Water SystemsWater Systems
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Fire SuppressionFire Suppression
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Multiple TanksMultiple Tanks
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Obtain a copy of the VA USBC
http://www.dhcd.virginia.gov/StateBuildingCodesandRegul
ations/PDFs/2006/2006_VirginiaConstructionCode.pdf
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Thank You!
Special thanks to VA Tech, the Virginia Department of
Conservation & Recreation and the Potomac Watershed
Roundtable.
Guy Tomberlin, CBOCode Specialist III
DPWES, Land Development Services (LDS)12055 Government Center Parkway, Suite 630
Fairfax, Virginia 22035-5504Desk: 703-324-1611Fax: 703-324-1846