WorksheetsModule 7
Total questions: 10
Worksheet time: 6mins
What type of protection does a double check backflow preventer provide if it installed properly?
backpressure, backsiphonage and high hazard
Backsiphonage, and low hazard
Backpressure, Backsiphonage, high and low hazard
Backpressure, Backsiphonage, and low hazard
The test duration a gas piping system with a volume less than 10 cubic feet must be not less than_minutes.
10
5
60
30
Plastic gas piping is generally permitted to be installed_.
Outdoors underground only
Where protected from physical damage
Indoors where installed in a conduit
Outdoors underground or above ground
Using the longest length method for sizing gas piping, each section of pipe is measured from.
The first branch to the appliance
The point of delivery to the most remote branch
The point of delivery to the first branch
The pressure regulator to the most remote outlet and the load of the section
Appliance shutoff valves located at a manifold are not required to be_.
identified
readily accessible
in the same room as an appliance
protected from damage
How much drop is there in 18 feet of pipe at 1/8 inch per foot grade? How about the same question with 1/4 inch per foot grade.
2 1/8in/4 1/2 in
2 1/4in/4 1/2in/
2 1/4 in /4 1/2 in
2 1/8 in / 4 1/8 in
CONVERT THE FOLLOWING FRACTIONS TO A DECIMAL. 1/4, 1/8,1/23/4,7/8,3/8,5/8
(a)
The lead content of drinking water pipe and fittings shall have weighted average lead content of_% or less.
0.20%
0.26%
0.25%
Must be 100% lead free
For automobiles are served in the garages and service stations, no oil separator shall not have a capacity of not less than_ cubic feet for the first 100 square feet of the area to be drained.
8
6
10
12
14
How many drinking fountains are needed for a school with 300 students.
5
3
6
4
