Div. B › Part 7 › 7.2 › 7.2.4 — Pipe Fittings

7.2.4.4 — Fittings Restricted in Use

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(1) No double Y, double TY, double T or double waste fitting shall be installed in a nominally horizontal soil or waste pipe.

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nominally horizontal

means at an angle of less than 45° with the horizontal.

soil

means , except for the purposes of Part 8 of Division B, a portion of the earth’s crust that is fragmentary or such that individual particles of a dried sample may be readily separated by agitation in water, and includes boulders, cobbles, gravel, sand, silt, clay and organic matter.

waste pipe

means a sanitary drainage pipe that carries the discharge from a fixture directly to a waste stack, soil stack, sanitary building drain, branch or sewage system.

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