Chapter 14 Flashcards
Fire protection systems
Standpipe systems are usually installed in larger structures of ‘’’ or more including high-rise apartments, office buildings and warehouses to provide a water source and upper elevations or extended distances
Four stories or more
A standpipe replaces hose and therefore reduces
Hose friction loss and eliminates the need for Long stretches Hose line from the street to the fire
Standpipes are most often found inside ‘’’ modern buildings, but in older buildings ??
Interior stairways of modern buildings,
Many class one standpipes are found on the outside of the buildings usually alongside the exterior fire escape
What are designed to suppress rapidly reduce fire growth rate or control stop Fire growth rate from increasing fires..
Designed to detect a fire in its earliest stage and apply fast water.. Who
Automatic sprinklers p. 443
Automatic fire sprinklers use ‘’’ *( a specific area with a calculated flow to reach the designed intent of suppression or control)
Design density
What system is a piping arrangement that carries water vertically from Floor to floor and sometimes horizontally for two or more hose connections through a building for firefighter operations
Standpipe system
Horizontal standpipes are found where
` inside large one story, shopping, malls, and long water front piers
The fire service urges that large structures be required by law to contain’’’ to eliminate the loss of time between arrival of firefighters at the fire ground and initiation of the fire attack
Standpipe systems
The laws were passed in major cities in required standpipes in all buildings more than ‘’’ ft
75 feet, ( at the time the highest aerial ladder was 75 feet
NFPA ‘’ / ‘’’ standard for installing sprinkler systems and standard for installation of standpipes and hose systems are generally referenced by local state and model building codes and insurance standards when designing a system
13 / 14 - standpipe
How many classes of standpipe systems according to their intended use?
3
The classes of standpipe systems could be designed for:
FD
FB
FAF
Fire department
Fire brigade
First aid firefighting
What class of systems are vertically dry pipe risers with 2 1/2 inch hosed discharge connections as designed locations usually on every floor or stairway landing inside the building for full scale firefighting. the systems are intended for used by fire departments rather than fire guards and building occupants.
Class one
Class one systems is required to have a minimum flow of ‘’ GPM
500 gallons per min
What class of system provide one and a half inch hose connections at designated locations in the building for first aid firefighters. the systems are generally intended for used by fire brigades ( building occupants FF) to attack and incipient fire before the fire department arrives and therefore have a lower water pressure and flows. usually 100 feet long stored in a wall mounted hose cabinet often a fire extinguishers include
Class two
What class of system provides a combination of class one and classroom systems they can have an inch and a half hose valve and a 2 1/2 inch hose valve so they can be used for a full scare fire department and first aid firefighting class one class two hose connections are provided with the system
Class three p. 444
Class three standpipes have a minimum required flow rate of’’ in a maximum flow rate of’’ four buildings that are sprinkled throughout in accordance with NFPA 13 and ‘’’ for buildings that are not sprinkler throughout in accordance with NFPA 13
500 to 1000 gallons per minute
1250 gallons per minute - not sprinklered
How many types of stamp Pipe systems are there?
Seven
What type of standpipe system have piping that is normally filled with pressurized air the systems are arranged through a use of a device such as a dry pipe valve to emit water automatically into systems piping when a hose valve is opened, connected to automatic water supply of the water demand necessary
Automatic dry system
What type of standpipe system have piping that is filled with water at all times
Automatic, wet system
What type of standpipe system supply, both hose connections, and automatic sprinklers
Combination
What type of standpipe system have piping that is normally filled with non-pressurized air system do not have a pre-water supply department. FDC usually a 2 1/2 inch connection must be used to supply maintain water for the firefighter
Manual dry standpipe
What type of standpipe system have piping that is normally filled with air that may or may not be pressurized the systems are arranged through the use of devices such as a deluge valve to admit water into the system, piping remote activation device located at a host station, such as a police station is operated. They have reconnected water supply cable of supplying the water demand necessary.
Semi automatic, dry standpipe. 445
What type of standpipe system is a piping system that has water in it at all times
wet standpipe