TB 149 - Residential Sprinkler System Flashcards
(31 cards)
As of what date the state of California is requiring the installation of residential fire sprinklers in all new 1 and 2 family dwellings and manufactured homes?
January 1, 2011
The mandate for residential sprinklers per NFPA 13D includes new construction of garages, patios extending how many feet from house and unattached structures greater than how many square feet?
Patios extending 4’, structures greater than 200 square feet
Residential sprinklers will only be required in what areas of the house exempting attics and other combustible sealed spaces?
Livable areas of home only
Nationwide statistics show that most fires, injuries and death occur at what structure?
Home
The international association of fire chiefs (IAFC) report that approximately how many civilians perish annually from fire with nearly 2/3 of the deaths occurring at home?
3,000 civilians
It is the opinion of the IAFC that what represent the single most important protective measure within the built environment?
Residential fire sprinklers
Residential fire sprinkler systems are primarily “what” systems with the purpose of preventing flashover and improving chances of occupant escape?
“Life safety”
According to the National Institute of Standards and technology (NIST), a home Fire can reach deadly proportions in as little as how many minutes, with 7-10 minutes passing before first responders arrive?
3 minutes
Are residential sprinkler heads more heat sensitive or less heat sensitive than traditional heads?
More heat sensitive (activate at earlier stages of fire)
Head temperatures for residential sprinklers range from what degrees?
135 to 175 degrees
Residential sprinklers cover a minimum area of what?
12’ x 12’
Extended coverage heads can cover an area of what?
20’ x 20’
Who plan checks and approves the installation of residential sprinklers?
Plumbing/mechanical engineering division of building and safety
All components of the home systems are to be listed under either what 2 companies while installed?
Underwriter laboratories (UL) or factory mutual (FM)
Water supplies for the residential sprinklers can be obtained from what 5 sources?
Domestic water supply, elevated tank, pressure tank, stored source, or well with an adequate pump
Most residential sprinkler systems in the city of LA are connected to what supply?
Domestic water supply
The valve on the street will shut off which 2 water supplies?
Both domestic and sprinkler water supply
Shut off/control valves are usually located where on the house?
Garage or on side of the house
Identification signs are required by building and safety for residential sprinklers, what is the minimum size of sign and lettering?
It is not regulated
What in the system is not mandatory by building and safety but highly encouraged and are installed on most residential systems?
Bell alarms (water flow)
Most residential sprinkler systems use what piping due to cost, fabrication time, fire resistiveness, connect ability to domestic water and less friction loss?
Chlorinated polyvinyl chloride (CPVC)
What color is CPVC?
Orange
The building and safety requires a minimum water demand capable of flowing 2 sprinklers heads for a period of how many minutes?
10 minutes
Residential sprinkler systems don’t require what due to the mild climate in Los Angeles?
Anti-freeze solution
