Question

causes of slow drains include all of the following except
missing trap
clogged fixture strainer
partly clogged drain system
venting problem
undersized drain system
question 27
when we test for functional flow and functional drainage we check all except which of the following?
is there adequate pressure and flow at each fixture with more than one fixture flowing?
is there adequate drainage capability from each fixture with more than one fixture flowing?
are there leaks at the fixtures?
does the water heater deliver hot water?
is there adequate hot water capacity?

Explanation:

1. For the first question, a missing trap, clogged fixture strainer, partly - clogged drain system, and venting problem can cause slow drains. An undersized drain system typically causes more severe drainage issues rather than just slow drains.
2. For the second question, when testing for functional flow and drainage, checking water heater's hot - water delivery and hot - water capacity is related to the water - heating system, not directly to functional flow and drainage of fixtures.

Answer:

1. undersized drain system
2. does the water heater deliver hot water?; is there adequate hot water capacity?