Sprinkler Installation Flashcards
(50 cards)
Standard spray sprinklers heads were approved in ___, listed in ___
Approved in 53’ and listed in 58’
The available ___ and the amount of ___ discharged will determine the spray pattern
pressure and amount of water
Deflectors do what?
Break up the water to form a specific pattern.
When ___ are located more than ___inches below the sprinkler deflector, an adequate spray pattern develops and obstructions up to and including ___ ft would not require additional protection underneath.
When obstructions are located more than 18 inches inches below the sprinkler deflector, an adequate spray pattern develops and obstructions up to and including 4 ft would not require additional protection underneath.
A standard spray sidewall sprinkler forms what kind of spray pattern? What two ways can they be orientated?
A quarter of a sphere
There are vertical and horizontal sidewall sprinklers
What is the profile?
Profile is the distribution discharge pattern of a sprinkler
What is the throw?
Throw is the distance that the water spray(discharge) travels from a sprinkler in one direction.
How to identify a sprinkler?
1-2 uppercase letters to identify manufacturer k-factor deflector characteristic pressure rating thermal sensitivity
k factors are all based on the ___ k factor.
- 6 k factor
11. 2 k factor would discharge 200% of a 5.6k factor
If corrugated metal deck roofs are deeper than >3 inches you must from the ___ point. If they’re <3 inches you can measure from the ___ lowest point
> 3 inches - highest point
< 3 inches - lowest point
if the deflection or sag in the insulation exceeds ___ inches. The deflector distance shall be measured to the high point of the insulation.
6 inches
Sprinklers shall be installed under fixed obstructions over __ ft
4 ft in width regardless of how low they’re to the sprinkler.
- sprinkler cannot be further than 3 inches away from the edge under the obstruction
If obstructions are less than __ inches from the floor you do not need to put a sprinkler head under it.
24 inches from the floor
If the room is less than ___ sqft a single sprinkler at the highest ceiling level shall be sufficient without regard to obstructions or minimum distance to the wall.
400 sq ft
Quick response heads are not allowed in which hazard occupation classification.
extra hazard occupancies
Panel construction - formed by beams/girders/trusses
max area of 300 sq ft
penetrations are filled to trap hot gases.
Heads can be lowered where their is panel construction.
Ex. between web joists
Bar joists with fireproofing >30%
If water can’t pass it obstructed construction
Small room rule
A compartment of light hazard occupancy classification having unobstructed construction and a floor area not exceeding 800 sq ft
Small room rule
A compartment of light hazard occupancy classification having unobstructed construction and a floor area not exceeding 800 sq ft
Sprinklers shall not be more than 9 ft from any single wall
Sprinklers must be a minimum of __ inches from any wall
4”
heat won’t collect right in the corner of the wall.
Sprinkler heads cannot be within __ ft of each other
6 ft or else baffles will be required.
Baffles shall not be less than __ inches long and __ inches high
8 inches long and 6 inches high
pendent - baffle must come down to at least level with sprinkler head
upright - baffle must extend 2-3 above upright
unobstructed construction sprinklers must be __ inch to __ inches down from the ceiling
1-2 inches from ceiling
If a vertical change in the ceiling creates a distance of more than __ inches it becomes a wall.
36 inches
