Water Systems

Question 1

Prior to 1960, there was a height limit of ___ feet or ___ stories

Answer 1

150 or 13 stories

Question 2

Pre 1960 consisted of how many water systems and what kinds

Answer 2

3. Dry standpipe, interior wet standpipe, and sprinkled basements

Question 3

Dry standpipes in pre 1960 buildings are how many stories

Answer 3

4

Question 4

Dry standpipes from 1960 to 1974 must be how many stories in height but not exceed how many feet

Answer 4

4 or more stories and not exceeding 150

Question 5

Dry standpipes in buildings after 1974 must be how many stories in height and not exceeding how many feet

Answer 5

4, 150

Question 6

Dry standpipe are how many diameter pipe and must flow how many GPM

Answer 6

4” to 6” and flow 500 gpm

Question 7

Dry standpipe have how many inlets and what diameter

Answer 7

2-4 2 1/2 inlets

Question 8

Pre 1960 4 or more stories have what kind of standpipe

Answer 8

Class I Dry

Question 9

You can tell a building is
Pre 1960
Because it will
Have

Answer 9

Exterior fire escapes

Question 10

Pre 1960 buildings will have sprinklers installed only where

Answer 10

Basements

Question 11

Pre 1960 dry standpipe have pressure control devices T/F

Answer 11

False. It is important pressure be delivered to the system by fire department operators

Question 12

Dry standpipe outlets are located where and require what

Answer 12

Every floor except for the first floor. Outlets are located based on requirement that every point must be reachable by a 30 degree stream from a nozzle attached to 100ft of hose

Question 13

Buildings prior to 1960 have what kind of valves

Answer 13

Gates or globe

Question 14

Wet (class II) standpipes are required in buildings how many stories in height and are equipped with what

Answer 14

3 and are directly connected to a water supply and are equipped with 1 1/2 outlets with hose and nozzle

Question 15

Class II standpipes are supplied by which sources

Answer 15

Domestic water system or gravity feed or pressurized tanks

Question 16

Buildings constructed prior to 1960, wet standpipe risers are what in diameter.

Answer 16

1 1/2 to 2 1/2

Question 17

Buildings prior to 1960 have risers supplied by which mains

Answer 17

The city mains. There are no inlets for fire department use

Question 18

A building prior to 1974 that is how many feet in height is considered a high rise

Answer 18

150ft

Question 19

Buildings over 150 ft in height that are built after 1960 are required to have what kind old standpipe

Answer 19

Class III combination

Question 20

Combination systems are equipped with what outlets

Answer 20

2 1/2 outlet with 1 1/2 reducer with hose and nozzle

Question 21

Combination standpipes have have what size outlets for fire department use

Answer 21

2 1/2 outlets

Question 22

For each floor above the fifth floor, a class III system will have what

Answer 22

100 ft of single jacketed unlined 2 1/2 hose with 1” tip attached to 2 1/2 outlets

Question 23

A building built 1974-present can be how many feet before it is considered a high rise

Answer 23

75

Question 24

Combination standpipe risers are how many inches and flow how many GPM

Answer 24

6 “ and 1000 gpm

Question 25

Combination standpipe risers have how many inlets with how many GPM at each

Answer 25

4, or if 3 or more standpipe risers, 6. A flow of 300 GPM is required for each 2 1/2 outlet

Question 26

1960-1974 buildings over 150 require sprinklers in

Answer 26

The basement only

Question 27

1960-1974 combination water system over 150ft water supply is

Answer 27

Not required

Question 28

Orfice plates are required on standpipe buildings built between 1960 and 74 that do not exceed 150 ft in order to

Answer 28

Restrict the size of the opening of the outlet, thereby reducing the pressure when flowing

Question 29

2 1/2 outlets require price plates if the pressure exceeds

Answer 29

135 psi

Question 30

The current definition of a high rise in LA is

Answer 30

Any building over 75 ft measured to the floor of the top level designated for occupant use from the lowest floor

Question 31

Buildings built after 1974 exceeding 150 ft have what kind of standpipe

Answer 31

Combined sprinkler

Question 32

Combined sprinkler standpipes are required to flow how many GPM per riser

Answer 32

1000

Question 33

PRV are used where

Answer 33

In buildings built after 1974 exceeding 75 ft in height to reduce standpipe pressure to working pressure

Question 34

The PRV replaced what due to what

Answer 34

Office plates. Because office plates could not handle static pressure if the line was shut

Question 35

The mechanism that reduces the pressure of the PRV is called what

Answer 35

Pressure regulating device

Question 36

Pressure regulating devices are required in any standpipe where the static pressure exceeds

Answer 36

150 psi

Question 37

Buildings over 75 ft in height that do not exceed 150 ft utilize what standpipe to supply sprinklers

Answer 37

Dry. And are fully sprinklered

Question 38

Standpipe outlets in buildings between 1960 and 74 that do not exceed 150 ft use what standpipe system?

Answer 38

Dry

Question 39

Buildings that’s exceed 150 built between 1960 and 74 use what kind of system

Answer 39

Combination