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Book 100 > Water Systems > Flashcards

Water Systems Flashcards

1
Q

What is the minimum gpm for dry standpipe risers?

A

4-6” 500 gpm

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2
Q

How many inlets are there for a dry standpipe 6 or more stories?

A

4

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3
Q

The outlets on dry standpipes are what kind of valve?

A

Globe valve or gate valves

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4
Q

How many dry standpipes are needed in a pre ‘60?

A

Enough to cover the building with 100’ of hose and a 30’ stream

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5
Q

Pre ‘60 wet standpipes are what diameter?

A

1.5-2.5”

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6
Q

What is the flow requirement for wet standpipes on the roof of post ‘70 high rises?

A

35 gpm at 30 psi

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7
Q

High rises greater than 150’ built between 1960-74 have what type of standpipe system?

A

Combination

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8
Q

Combination standpipe risers must have how many FDC’s and is rated at how many GPM?

A

4 inlets for 2 risers, 250 gpm per inlet

6 inlets for 3 or more risers

Each riser rated to 1000 GPM

Each outlet rated to 300 GPM

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9
Q

What will be in the hose cabinets of combination systems above the 5th floor?

A

100’ of 2.5” hose with a 1” tip

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10
Q

What is usually installed in combination systems to keep the pressure regulated when there are minor leaks in the system?

A

Jockey pumps

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11
Q

What do orifice plates regulate pressure and gpm to?

A

200 gpm @45 psi

When no water is flowing it will equal system pressure

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12
Q

On wet standpipes, if the outlet pressure is greater than 70 psi, what is required and what shall the pressure be?

A

A pressure reducing valve to lower the pressure to 50 psi at the nozzle

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13
Q

Post ‘74 all buildings over what height shall be sprinklered?

A

75’

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14
Q

Post ‘74 A pressure reducing valve is required if the outlet pressure is greater than what?

A

150psi

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15
Q

In post ‘74 high rises the upper floors may have what kind of pressure regulating device?

A

Orifice plates

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16
Q

On post ‘74 high rises, pressure regulating devices are set to what psi providing how many gpm?

A

100 psi providing 300gpm

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17
Q

In post ‘74 high rises, wet standpipes with hose are not required if the building has what?

A

2.5”-1.5” reducer with a cap and chain on the 2.5” outlet

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18
Q

What is the requirement for on site water supply of a post ‘74 high rise 75’-150’?

A

Sprinkler flow for one floor of the building for 30 minutes plus 100 gpm for the standpipe

19
Q

What is the on site water supply for a post ‘74 high rise 150’-275’?

A

500 gpm for first riser plus 250 gpm for each additional riser for 30 minutes.

20
Q

What is the on site water supply required for post 74 high rises greater than 275’

A

Minimum 45,000 gallons

Maximum 105,000 gallons

21
Q

What is the requirement for on site supply tank filling?

A

6” pipe fills tank in less than 8 hours

22
Q

Buildings under construction require what kind of standpipe?

A

Buildings 6 or more stories require 1 dry standpipe when the construction reaches 50’. The standpipe shall extend to not less than 1 floor below the top floor of construction.

23
Q

If equipped with a jockey pump, how much lower psi shall the main pump be set to turn on?

A

At least 5 psi lower

24
Q

What shall the capacity of the fire pump be?

A

150 percent greater than the rated pressure

25
Q

How many and what type of pumps are required for what eras?

A

‘60-‘74 electric

Post ‘74 1 electric 2 diesel

26
Q

What era buildings are not required to have emergency power?

A

‘60-‘74

27
Q

The automatic shut down of the fire pump will engage when the pump reaches what speed?

A

20% above rated engine speed

28
Q

To fuel fire pumps how much fuel supply is required?

A

8 hours new high rise

4 hours existing high rise

29
Q

Engine drive controllers on the fire pumps are set to turn on and turn off at what psi?

A

Turn on at 50 psi less than system pressure

Turn off when 10 psi less than system pressure

30
Q

How long are the “time out timers” on fire pumps set for?

A

Electric- 10 minutes

Diesel- 30 minutes

31
Q

When will tamper alarms activate?

A

1) When the valve is closed 2 turns

2) When the tamper switch cover is removed

32
Q

According to book 100, what size outlets are on Class III Combination systems?

A

2.5 with a 1.5 reducer

33
Q

According to book 100, what are the flow requirements for wet standpipes at roof outlets?

A

Pre ‘48- 8psi 20gpm
‘48-‘59 12 psi 35gpm
‘60-‘70 15psi 35gpm
‘70- present 30psi 35gpm

34
Q

According to book 100, what is the required Fire flow for class III combination standpipes?

A

1000gpm per riser

35
Q

According to book 100, what is the required flow at the outlets of a Class III system?

A

300 gpm

36
Q

According to book 100, what year buildings have looped systems?

A

1983-1988

37
Q

According to book 100, pressure regulating devices are required what the static pressure at the outlets exceeds what psi?

A

150 psi

38
Q

According to book 100, pressure regulating devices are required to provide what pressure?

A

80-125 psi flowing 300 gpm

39
Q

According to book 100, what is the minimum flow rate for the vane type water flow switch?

A

4-10 gpm

40
Q

According to book 100, after how much time of water flowing in a system should the water flow alarm sound?

A

20-60 seconds

41
Q

According to book 100, when are pressure restricting devices found?

A

When static pressure is between 135-150. Usually top 5 floors

42
Q

According to book 100, buildings under construction greater than 150 shall have what to supply their standpipes?

A

Manually started fire pumps

43
Q

According to book 100, what is the run out time for electric and diesel fire pumps?

A

Electric- 7 to 10 minutes

Diesel- 30 minutes

44
Q

According to book 100, buildings over 275 feet must have what kind of standpipe system?

A

Looped

Book 100 (10 decks)

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