Does a sink drain trap have to be plumb?
Sunday, November 1, 2020
"Traps shall be set level with respect to their water seals,” according to the International Residential Code (IRC P3201.3) and the Residential edition of the Florida Building Code (FBC). But the goofy angle of the trap shown above is only one of its problems. The trap is also installed backwards, creating an excessively tall trap seal, and the accordion-type piping makes the whole assembly guaranteed to clog. The trap shown at right is a much less egregious example, but needs to be correctly aligned with the tailpiece.
A plumbing trap must maintain enough water in it to prevent sewer gas from rising up into the house, but not so much that it creates a drain that is sluggish and easily clogged, and the interior surface of the pipe should be self-scouring.
• • • • • • • • • • • • • • • • • • • • • • • • • • •
Here’s links to a collection of some of our other blog posts about PLUMBING DRAINS AND TRAPS:
How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
site-built, mobile/manfuactured and modular homes
of Blog Posts
Top 5 results given instantly.
Click on magnifying glass
for all search results.