- Author
-
Orloski, M. J.
|
Wyly, R. S.
- Title
- Hydraulic Performance of a Full-Scale Townhouse Drain- Waste-Vent System with Reduced-Size Vents. Final Report 1972-1974.
- Coporate
- National Bureau of Standards, Washington, DC
Department of Defense, Washington, DC
- Report
-
NBS BSS 060
August 1975
- Distribution
- Available from National Technical Information Service
- Keywords
-
houses; plumbing; piping systems; vents; drains; venting; building codes; design criteria
- Identifiers
- townhouses
- Abstract
- This report describes the experimental findings of tests on a full-scale two-story plumbing system with reduced-size vents under a range of operating conditions including tests with the vent terminals closed and the building drain submerged. Results indicate that dry vent piping in 1-2 story housing units can safely be smaller than presently allowed by design without jeopardizing the trap seals. On the basis of the current investigation and from earlier work on full-scale systems of substantially different geometry, criteria for sizing reduced-size vents are given for general application to conventional 1-2 story housing units. In addition to the practical evidence in terms of acceptable trap performance, the current study provided fundamental evidence of the excessive present design criteria.