Standpipe, FDC, Hydrants Flashcards by Hey Now

Standpipe system classes

Class 1
Class 2
Class 3

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Class 1 standpipe system contains

2 1/2” hose connection, for trained personnel only

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Class 2 standpipe contains

1 1/2” hose valves, intended for trained building occupants

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Class 3 standpipe system contains

1-1/2” & 2-1/2” hoses valves, intended for FD use only

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Class 2 and class 3 standpipe classes are supplied with what

100 ft of 1-1/2” hose

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Nozzles that USED to be supplied for hoses in standpipes had

A 3/8 or 1/2” outlet that could not be shut off

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Standpipe systems are generally designed by

An architect or engineer

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All classes of standpipe requires valves on

Each floor

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Hose valves shall be ____ from ground

Within easy reach, never over 5 feet
Never less then 3 feet

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Class 1 standpipe systems located

-Each main floor landing
-at the highest stairway landing w/ access to roof
- hose travel distance must not be exceeded (130’ unsprinklered, 200’ for NFPA 13&13R)

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Class 2 standpipe systems located

-The corridor or adjacent space to stairway enclosure
-every 130’

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All new standpipe systems shall be tested at

200 psi, 2 hours, 0 psi loss Or 50 psi in excess of system pressure, whichever is greater

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Standard fittings and hose valves are rated for a pressure up too

175psi

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Standpipe system types

Automatic or Manual Wet
Automatic or Manual Dry
Semi Automatic
Combined

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Automatic Wet and Dry standpipe system consist of

Wet - Full of water at all times, capable of supplying system demand at all times

Dry - Full of air until valve is opened, capable of supply system demand at all times

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Manual wet and dry standpipe systems consist of

Wet - full of water at all times, relies on FD to supply system demand

Dry - full of air until valve is opened, no permanent demand, relies on FD to supply system demand

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Semi-Automatic Dry standpipe system consists of

Attached water supply capable of supplying system demand utilizing a deluge valve which is activated by a remote device

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Combination Standpipe system consist of

Supplies both hose connections and automatic sprinklers

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Schedule 10 pipe is pressure rated for

300psi

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How can standpipe be joined together

-grooved
-threaded
-welded

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Where copper pipe is used

K,L and M can be used
Must be brazed

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Hose valves shall have a minimum of ___ clearance around any part of the cabinet

2”

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Standpipe system gauges located

Top floor of each riser

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Class 3 standpipe systems located

-Locations comply with 1&2
-travel restraints for 2 do not apply
-

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Standpipe system pipe size shall be a minimum of

4”

Combined systems in a partially sprinklered building shall have a minimum pipe size of

6”

Branch lines for standpipe systems shall not be smaller then

2 1/2” inch

If pressure exceeds 100psi on an 1-1/2 outlet, what is required

A pressure restricting device

Minimum pressure for most remote 2-1/2” outlet is

100psi

Minimum pressure for most remote 1-1/2” outlet

65psi

Minimum flows for class 1&3 (not out of hose connection, system demand)

- 500 gpm through 2 most remote 2-1/2” outlets - 1000 gpm for fully sprinklered buildings - 1250 gpm for buildings that are not fully sprinklered

Minimum flow rate class 2

100 gpm @ 65 psi from most remote hose connection

Max flow rate single 2-1/2” valve

250gpm

Max flow rate for single 1-1/2” valve

100gpm

Drain size for PRV testing

2-1/2 and less 1 pipe size bigger 3” and higher - same size Ex. 3” drain pipe for 2-1/2” PRV 2” pipe for 1-1/2” PRV

Water supply shall be able to meet system demand for

30 minutes

Buildings under construction must have

Hose connection at each floor level exit stairway & connection for FD hose

The maximum pressure at any point in the standpipe system shall not exceed

350psi

1-1/2” hoses stations are NOT ____

Considered standpipe systems

1-1/2” hoses stations are generally installed for

Mop up after a fire

Minimum size pipe a 1-1/2” hose station can be taken off of is

2-1/2” pipe OR 2” when hydraulically calculated

Hand hose stations with horizontal runs

1”

Hand hose stations with horizontal runs 20-80 feet will have what size minimum pipe feeding it

1-1/4”

Hand hose stations with horizontal runs more then >80 feet will have what size minimum pipe feeding it

1-1/2”

All Vertical pipe feeding hose stations will be a minimum of

1”

Hose stations must be installed with a coverage area of

100(hose length) + 30 (spray distance) = 130ft total

Dry barrel fire hydrant main control valve is located (depth in ground)

1’ below the frost line

Time requirement for hydrant draining is

Drain in 60 minutes

Wet barrel hydrant control valve is located

Just below grade

Wall hydrants are installed when

Fire dept. may need access in an area that has no hydrant

How much water shall be above dry hydrant intake

2ft

How much water below water intake for dry hydrant

1ft

Dry hydrants must sit

Below the drought line (based off 50 year drought level for water source)

What is used to protect hydrant damage

Pillars

Class & Colour of Hydrant 1500+ gpm

Class AA & Blue

Class & Colour of Hydrant 1000-1499 gpm

Class A & Green

Class & Colour of Hydrant 500-900 gpm

Class B & Orange

Class & Colour of Hydrant under 500 gpm

Class C & Red

Hydrant how far from standpipe connection

100 feet

Hydrant how far from sprinkler connection

45m (148 feet)

What should be at the base of a hydrant

- concrete pad - gravel for drainage

Isolation valve # of turns rule

3x pipe diameter +or- 2 or 3 turns

Hydrants shall be ______ above finish grade

18” to 36” (centre of outlet)

Hydrants in house hoses shall be a minimum of _____ from floor

12”

Minimum size piping for hydrants is

6”

What is the minimum outlet size and number on an FDC

2-1/2” x 1

Anything deemed a high rise building (over 75’ from FD access) must have how many FDC inlets

2-1/2”x4

Automatic dry standpipe system can be no larger then ____

750gal

Pneumatic test of standpipe system consist of

40 psi for 24 hours, 1.5 psi loss

FDC shall be how far off the ground

18” to 48”

FDC can be omitted when

-single storey building less then 2000sqft -deluge system that exceeds the FD pumping capability -remote area that doesn’t have FD access

Minimum size FDC feeding fire engines is

4”

Minimum size FDC feeding fire boats

6”

Max size riser for single outlet FDC

3”

Hydrants shall be a minimum of how far from building

40 feet

Hydrants shall be spaced

300ft apart

A control valve will be installed ____ from the hydrant and be which kind of valve

20ft - non rising stem

Check valve on FDC must be a minimum of how far away from connection

4ft

What is the lettering on a FDC sign

1” raised lettering, must say what it operates

standard for standpipe systems

NFPA 14

Standard for service mains

NFPA 24

Standard for flow testing and marking of hydrants

NFPA 291

Canadian pipe threads

CSA

American pipe threads

NHS

Stortz connection is connected with ____ turn

1/4” turn

Dry hydrant can have what fittings

2- 45s or 1- 90

What kind of strainer is on the end of a dry hydrant

Basket strainer

Depending on municipalities, how long is dry hydrant piping generally limited too

25 feet

Flush hydrants are usually located at

Air ports

Pull station for semi automatic system is to be located how far from hose valve

3 feet

2-1/2” hose lines are only ever to be used by

Fire department personal

Standard cabinet size is

30x30x9

Gauges must be what size

1/4”

Scale for gauges must have

2x the pressure working against it

Auto dry standpipe systems can be more then 750 gal if

water delivery time of 3 minutes can be met

Pressure regulator can be omitted if a the air compressor is

5.5 cubic feet air compressor

Paddle flow max velocity and gal to operate

18’ per second - 10 gpm

High rises can only use what systems

Auto and semi auto

Class 2 systems do not require

Protection from fire damage

Pipe pitch for dry standpipe and dry standpipe in refrigerated areas

- 1/4” per 10’ - 1/2” per 10’

If hose connections are not in stairwells, what must be added

A sign to show location of standpipe valves

Letters on standpipe sign must be

2-1/2” big and red lettering

If hose is less then 1-1/2” on class 2 the distance of cabinets must be

120ft and non collapsible

Max static pressure at 2-1/2” outlet

175psi

What type of PRV’s do 1-1/2 and 2-1/2 use

1-1/2 = pressure RESTRICTING 2-1/2 = pressure REDUCING

Standpipe, FDC, Hydrants Flashcards

(105 cards)