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IAPMO IGC 298-2013
- Rooftop Support Blocks for Piping and Mechanical Equipment
- standard by International Association of Plumbing and Mechanical Officials, 05/01/2013
- Publisher: IAPMO
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This standard covers blocks intended for installation on flat roof surfaces for supporting gas, condensate or refrigeration piping, electrical conduits, ductwork, roof-top walkways, and mechanical equipment, and specifies requirements for materials, physical characteristics, performance testing and markings.