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Implementing Rain Water Harvesting into Building Construction in VA. “ Moving Rain Water Harvesting to the Mainstream ”. Presented by: Guy Tomberlin, CBO Code Specialist III Fairfax County DPWES, Land Development Services (LDS). October 22, 2008. Objectives.

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Implementing Rain Water Harvesting into Building Construction in VA


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    1. Implementing Rain Water Harvesting into Building Construction in VA “Moving Rain Water Harvesting to the Mainstream” Presented by: Guy Tomberlin, CBO Code Specialist III Fairfax County DPWES, Land Development Services (LDS) October 22, 2008

    2. Objectives • Identify potential Rain Water Harvesting issues related to the adopted 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.

    3. Four key interface areas implementing Rain Water Harvesting with the VA Building Codes

    4. Implementation of Rain Water Harvesting • Location of the installation: • The built environment (existing locations) • New construction

    5. Implementation of Rain Water Harvesting 2. The type of the installation: • Commercial • Residential

    6. Implementation of Rain Water Harvesting 3. The point of utilization: • Outside (typically non–building use related) • Irrigation • Inside • Plumbing fixtures, fire sprinkler systems, etc..

    7. Implementation of Rain Water Harvesting 4. The quality of the water: • Potable • Non–Potable

    8. How do we help make Rain Water Implementation possible?

    9. Partnerships andworking together! Site Regulation & Enforcement Designer/Customer Health Department Building Code Regulation & Enforcement (Possibly the Office of the Fire Marshal)

    10. The Building Code Element

    11. Building Code RegulationsVA - Uniform Statewide Building Code (USBC) The document used to enforce building code provisions across the Commonwealth as set forth by the Code of Virginia.

    12. USBC • Established in 1972. • Updated approximately every 3 years. • Currently references the 2006 edition of the International Code Council (ICC) family of codes. • International Plumbing Code (IPC)

    13. IPC 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.

    14. IPC 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.

    15. IPC Requirements • 602.3 Individual water supply. Where a potable public water supply is not available, individual sources of potable water supply shall be utilized. • 602.3.1 Sources. Dependent on geological and soil conditions and the amount of rainfall, individual water supplies are of the following types: drilled well, driven well, dug well, bored well, spring, stream or cistern. Surface bodies of water and land cisterns shall not be sources of individual water supply unless properly treated by approved means to prevent contamination.

    16. IPC 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 preventer applications shall conform to Table 608.1, except as specifically stated in Sections 608.2 through 608.16.10.

    17. IPC Requirements 608.8 of potable and nonpotable water. In all buildings where 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 metal tags in accordance with Sections 608.8.1 through 608.8.3.

    18. IPC Requirements 1101.2 Where required. All roofs, paved areas, yards, courts and courtyards shall drain into a separate storm sewer system, or a combined sewer system, or to an approved place of disposal. For one- and two-family dwellings, and where approved, storm water is permitted to discharge onto flat areas, such as streets or lawns, provided that the storm water flows away from the building.

    19. USBC – Code Modifications 106.3 Issuance of modifications. Upon written application by an owner or an owner’s 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.

    20. Location on property Building code safety issues Freezing Overflow Environment Residential Scenario

    21. Backflow Protection and Filter Systems

    22. Location of system components

    23. Commercial Scenario

    24. Storage Location

    25. Installation

    26. Potable and Non–Potable Water Systems

    27. Fire Suppression

    28. Multiple Tanks

    29. Obtain a copy of the VA USBC http://www.dhcd.virginia.gov/StateBuildingCodesandRegulations/PDFs/2006/2006_VirginiaConstructionCode.pdf

    30. Questions – Comments?Thank You! Special thanks to VA Tech, the Virginia Department of Conservation & Recreation and the Potomac Watershed Roundtable. Guy Tomberlin, CBO Code Specialist III DPWES, Land Development Services (LDS) 12055 Government Center Parkway, Suite 630 Fairfax, Virginia 22035-5504 Desk: 703-324-1611 Fax:    703-324-1846 Guy.tomberlin@fairfaxcounty.gov