WS Final Practice 4

A(n) ___ system is a water-pressure booster system that includes an open, but covered, water storage tank located on the roof of a building, a pump to supply water to the tank, and piping and valves to deliver water to the building water supply system.

• hydropneumatic tank

• elevated tank

• multipump

• variable-speed-pump

The bottom of water piping should be a minimum of ___" above the top of drainage pipe when crossing the pipe and placed on a solid shelf at one side of the trench when placed parallel with drainage piping.

• 6

• 12

• 24

• 36

___ is an impairment of potable water that creates a hazard to the public through poisoning or the spread of disease

• Backflow

• Cross connection

• Pollution

• Contamination

A(n) ___ cross connection can lead to backsiphonage or backpressure backflow.

• direct

• indirect

• under-rim

• over-rim

Airgap separation must always be a minimum of ___".

• 3/8

• 1/2

• 3/4

• 1

An atmospheric vacuum breaker must be installed with the critical level a minimum of ___" above the overflow rim of a fixture or above all downstream piping.

• 1

• 2

• 6

• 12

Backflow prevention assemblies must be tested at least ___

• every week

• twice per month

• every six months

• annually

A reduced-pressure (RP) backflow prevention assembly consists of ___ independently acting internally spring-loaded check valves.

• 2

• 3

• 4

• 5

___ treatment is the final level of wastewater treatment, which improves effluent quality before water is reused, recycled, or discharged to the environment.

• Primary

• Secondary

• Tertiary

• constant

Dr. Hunter's method utilizes water supply fixture units (WSFUs), fixture flow demand charts, and friction loss/flow rate charts to determine pipe sizes.

• T

• F