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Standards

Roof Drains

A112.21.2M - 1983

This Standard was last reviewed and reaffirmed in {{activeProduct.ReaffirmationYear}}. Therefore this version remains in effect.

Roof Drains
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This standard covers roof drains including general purpose, gutter and cornice, parapet and promenade or deck types, which convey rainwater from the roof area of building structures. This Standard contains: (a) Definitions (b) Nomenclature (c) Outlet Types and Connections (d) Top Size-Dome or Grate Free Area (e) Materials and Finishes (f) Accessories.


The purpose of this Standard is to supply plumbing code authorities and others with full knowledge of the minimum design and quality criteria for roof drains. It is not intended for use as a specification guide.


There is a newer edition of this standard available. A112.21.2M-1983 on Roof Drains has been incorporated into A112.6.4-2003, Roof, Deck, and Balcony Drains.

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