Year One

Module Assignment: 18106-Underground Pipe

1. A device used to protect against cross-connections in the potable water supply is a _____.(Required)
2.The type of hydrant most likely to be used in areas with freezing temperatures is a _____.(Required)
3.Refer to the hydrant in Figure RQ01. Assuming that it follows standard color codes, determine whetherit is a public or private hydrant and its available flow rate.(Required)
4.Which of the following devices is most likely to be used in a residential application?(Required)
5.Average soils are usually a mixture of _____.(Required)
6.For the seismic protection of sleeved pipe 4" and larger, the required clearance between the sleeve and the pipe is _____.(Required)
7.Thrust block calculations are typically done by the _____.(Required)
8.A cubic yard of soil weighs _____.(Required)
9.A 2" pipe would require a sleeve with a diameter of _____.(Required)
10.The minimum flow rate for flushing 8" suction piping on a fire pump system is _____.(Required)
11.The horizontal bearing strength of silt is _____.(Required)
12.For ductile iron pipe 12" and smaller, no cuts should be made within _____.(Required)
13.The spoil from a new ditch cannot be used as fill if it is cut through _____.(Required)
14.How many pounds of thrust is developed on an 8" 90-degree elbow?(Required)
15.In any trench that is over 4' deep, ladders must be placed every _____.(Required)
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