Drainage Chapter 4 Review

A(n) ___ is a device that retains a quantity of liquid each time a plumbing fixture is used, thus producing a measured volume of liquid.

The maximum length of an indirect waste pipe is 5' (1.5 m).

 A(n) ___ is the external water seal trap that is approved by all plumbing codes.

The outlet of a trap directs wastewater flow into the dip of the trap.

The maximum trap arm length is different for each size of pipe and differs among codes

The (a)   is the lower part of the 90° radius bend and is also the top of the trap seal.

Pressure pushing against the outlet of the trap from inside the drainage system is called ___.

The 24" (610 mm) minimum standpipe is the height required to eliminate the possibility of pumped waste (a)   the standpipe.

A lavatory is prone to self-siphonage to a greater degree than any other fixture.

A ___ is a device or system with a feeder line that releases a small amount of water to a trap when it runs dry to maintain the trap seal.