ASPE/ANSI 45-2013: Siphonic Roof Drainage
ASPE's first ANSI-approved standard, ASPE/ANSI 45-2013 establishes the minimum performance specifications for siphonic roof drainage systems and is intended to provide designers, installers, and code officials with a standard of practice for the proper application of siphonic roof drainage. ASPE/ANSI 45 applies to engineered siphonic roof drainage systems intended to prime and operate full-bore through proper pipe dimensioning and the use of siphonic roof drains. It does not apply to conventional roof drains covered under ANSI/ASME A112.6.4, atmospheric roof drainage systems, or sanitary drainage systems.
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