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Captain Sori-Tech Books > *Bk 29 Water Utilities > Flashcards

*Bk 29 Water Utilities Flashcards

1
Q

Trunk lines are normally constructed of?

A

Iron or concrete

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2
Q

______ lines normally run beneath a street and parallel to a curb

A

main

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3
Q

Main lines are constructed of?

A

Iron pipe

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4
Q

Water is delivered to individual structures by a combination of ______ and ______ lines.

A

Service and customer

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5
Q

_____ lines run between a main and a water meter

A

Service

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6
Q

Service lines can be constructed of what?

A

Iron, copper or galvanized pipe

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7
Q

_____ lines run between a water meter and a structure

A

Customer

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8
Q

Customer lines can be constructed of what?

A

Iron, copper, galvanized or plastic pipe

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9
Q

Who is in charge of maintenance for the water metering device and the shut-off valves on either side of a water metering device?

A

Water utility companies (dwp)

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10
Q

Who is in charge of maintenance for the plumbing starting from the water meter shutoff valve to the structure?

A

Building owner

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11
Q

Meter boxes and vaults often have a lid which is painted which color?

A

Blue

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12
Q

What are the two types of water utility shut off valves?

A

Non indicating and indicating valves

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13
Q

What are the two types of indicating valves?

A
  1. Outside stem and yolk (OS&Y)
  2. Post indicating valve (PIV)
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14
Q

What kind of meter is used to calculate water usage for domestic water services that can use low and high water flows?

A

Compound

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15
Q

_________ are normally used in domestic services to reduce high water pressures to an acceptable level inside a structure

A

Pressure reducing valves

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16
Q

What water pressures (psi) are commonly found inside a dwelling?

A

40-80psi

17
Q

Multiple water meters used to supply individual occupancies in a commercial building is often referred to as a _______.

A

Battery

18
Q

A wet standpipe system is designed to be used by who?

A

The occupants

19
Q

Ball and cone valves can be identified by the lack or presence of a nut on the bottom of a valve.

Which valve has the nut on the bottom?

A

Cone valve (ball valve does not)

20
Q

Leaks from commercial toilets can be eliminated by removing a cap over the relief valve and using a slot-head screwdriver to turn the relief valve screw inward or outward?

A

Outward

21
Q

For a hot water leak inside a structure, where should you look to shut off the appropriate valve?

A

Water heater or boiler

22
Q

What else must be shut off if you shut down a hot water line from a water heater?

A

Turn off gas/electricity.

23
Q

Instead of shutting down an entire sprinkler system, what is the name of the valve that can be used to shut down the needed area/floor?

A

Sectional shutoff or zone valve

24
Q

When an OS&Y valve is shutoff, is the stem visible or not visible?

A

Not visible

25
Q

What size is the hydrant gate valve cap? (Used for shutting down a hydrant)

A

6 inch diameter cap

26
Q

Fire hydrant gate valves may require how many full turns to complete a shutdown?

A

18-26

27
Q

Approx ____ % of all fire hydrant gate valves close in a clockwise direction.

A

98%

28
Q

Per Vol 2:

___% of hydrants will have the street shut off valve located within ___ feet of the hydrant.

A

80%

15 ft

29
Q

Per vol 2:

Some hydrant gate valve locations are indicated by ____ on the adjacent curb

A

Etched arrows

30
Q

Water utilities, non indicating shut off valves:

A gate valve is a non-rising stem valve that has a _____ valve-nut attachment at the top of the valve stem.

A ball or cone valve has a _____ valve-nut attachment on the top of the valve.

A

Square

Rectangular

31
Q

Automatic Dry Pipe sprinkler System:

The pipes are filled with _______.

A

Compressed air

32
Q

What should you do if a shut-off valve has a sign that reads:

“LIFE SUPPORT MACHINE IN AREA” or “SHUT GATE SYSTEM DIVIDE.”

A

DO NOT turn these valves off unless appropriate approval is obtained.

33
Q

________ lines carry water from a primary source (reservoirs, pumps, etc.) to mains within a distribution system

A

Trunk

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