Deck 3: Special Applications of Plastic Pipe and Fittings

Question 1

Plastic piping materials generally have a self-ignition temperature exceeding

A) 260°F.
B) 400°F.
C) 500°F.
D) 650°F.

Answer 1

D

Question 2

If permitted by local code, air admittance valves should be located a minimum of four inches above the crown weir of the fixture trap.

Answer 2

True

Question 3

Corrosive-resistant fume-exhaust systems normally involve which two types of piping?

A) CPVC and PB
B) PVC and PE
C) glass and PVC
D) PVC and CPVC

Answer 3

D

Question 4

The lower the ignition temperature of a product, the safer it is.

Question 5

The best piping choice for the building owner is

A) the one with the lowest life-cycle cost for the installation.
B) the one with the lowest initial cost.
C) the one that requires the least maintenance.
D) the one that is most profitable for the contractor.

Question 6

Various plastic piping installations can be made that will have up to a three-hour fire rating.

Question 7

Which plastic piping type may be used as an under slab hot air duct?

A) PVC
B) CPVC
C) PE
D) PP

Question 8

The typical piping material used in ice rinks is ____.

A) CPVC
B) PVC
C) PB
D) PE

Question 9

Plastic piping has many other non-plumbing uses.

Question 10

The most common plastic pipe used in geothermal ground source heating systems is

A) CPVC
B) PVC
C) PE
D) ABS

Question 11

Plastic piping may be used in radiant heating floor installations.

Question 12

Since plastic pipe is fire-resistant, there is no need to caulk penetrations through a fire-rated wall.

Question 13

Because snow melt systems must be capable of heating concrete without the benefit of an insulated structure, how much higher is their heat output (BTUH) compared to indoor radiant heating systems?

A) 1 to 2 times
B) 2 to 4 times
C) 3 to 6 times
D) 4 to 8 times

Question 14

One method of simplifying or reducing vent piping is by using

A) air admittance valves.
B) drainage fixture units.
C) water supply fixture units.
D) Hunter's Curve.

Question 15

Which plastic piping type is used in radiant heating systems?

A) PE
B) PEX
C) PP
D) ABS

Question 16

The most important requirement for piping in permanent installations is that it

A) costs as little as possible up front.
B) requires absolutely no maintenance.
C) has adequate flow capacity for all likely demands.
D) is easy for the technician to install.

Question 17

It is essential that the installation of any utility piping be done in such a way as to not reduce the fire rating of the structural element being penetrated.

Question 18

PEX has a lower ignition temperature than PVC.