Soil and waste pipe systems for housing (1967 edition, Withdrawn)

This Digest replaced Digest 32 (Simplified plumbing for housing, 1963) and, based on further experience of single stack plumbing systems, extends the scope of recommendations made in the earlier Digest. It records these changes and includes minor revisions.

Publisher

BRE Archive

Author

BRE

Format

PDF, 6 pages

Subject / Keyword

DG80, DG080, Digest 80, plumbing, waste, pipe, soil

Published Date

01-Jan-1967

ISBN

Digest 80

THIS PUBLICATION HAS BEEN ARCHIVED.

Whilst this publication can still be purchased some of the information in it has been superseded by more recent research and standards. The BRE Group does not accept any responsibility whatsoever for any loss or damage, including - without limitation - indirect or consequential loss or damage arising from use, or loss of use, of data or profits arising out of, or in connection with, the use of this document.

In single-stack plumbing, the soil stack alone provides venting, and earlier Building Research Station Digests had extended its use to multi-storey buildings of increasing load. This Digest, published in March 1967, records further extensions to the recommendations in Digest 32 and withdraws that earlier issue. It explains how the water seals in appliance traps can be broken by induced siphonage, back pressure or self-siphonage, and sets out design recommendations to keep the seals intact. These cover the length and slope of lavatory basin waste pipes, the shape of W.C. branch connections, the point at which bath wastes enter the stack, and the use of a large-radius bend at the foot of the stack. Offsets below the topmost appliance are also addressed. A table gives minimum stack sizes and venting for houses, flats and maisonettes, using stacks of 3½ to 6 in. in buildings of up to 25 storeys. The Digest also comments on using soil and waste stacks to carry roof rainwater, and on wind suction at the tops of stacks, where a protective cowl may help.

Book Archived