Sprinkler Installation Flashcards
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
Obstructed construction
sprinklers can be a maximum distance of __ inches down from the ceiling but has to be installed 1-6 inches below the obstruction.
1-6 inches below the obstruction but to a maximum of 22inches
Sprinklers in sloped ceiling should all be ___ ____ sprinklers
quick response sprinklers
Sprinkler heads have to be parallel to ceilings even if they are sloped.
True
shadow areas of a sprinkler are permitted as long as the cumulative dry areas do not exceed ___ sq ft per sprinkler
15 sq ft per sprinkler
finished soffit < 8 inches
finished soffit >8 inches
If the finished soffit is >8 a sprinkler underneath is required.
- 1 head sidewall
finished soffit < 8 inches
finished soffit >8 inches
2* heads sidewalls on either side of finished soffit these numbers become ___
If the finished soffit is >8 a sprinkler underneath is required.
16 inches
Standard sidewall sprinklers minimum distances
4-6 from ceiling
6-18 when listed
vertical sidewalls distances from walls
4-6 inches from wall
horizontal sidewalls can be right on the wall.
sidewall sprinklers should not be installed less than __ ft from light fixtures or similar obstructions.
4 ft
sidewall sprinklers
there cannot be an obstruction within __ ft of the deflector
4 ft
sidewall sprinkler
3 times rule
the distance between the sprinkler and the obstruction has to be a minimum of 3x the largest dimension of the obstruction.
sidewall sprinklers
the clearance between the deflector and the top of storage shall be __ inch or greater
18 inches or greator
sidewall sprinklers
the clearance between the deflector and the top of storage shall be __ inch or greater
18 inches or greater
special sprinklers rules
maximum protection area should not exceed ___ sq ft
maximum protection area should not exceed 400 sq ft
the temperature rating for heads orange or red yellow or green blue purple black
orange or red 135-170 yellow or green 175-225 blue 25-300 purple 325-375 black 375+
relation of maximum ceiling temperature to the temperature rating of heads
temperature rating of head is generally 25 higher than what you would expect for the maximum ceiling temperature
the high-temperature zone around a unit heater
7 feet radius
7 feet above
2 feet below
requires high temperature heads
intermediate temperature zone around a unit heater
7 - 20 feet @ 30 degree angle
requires intermediate temperature head
steam main temperature zones(Non-insulated) ex. ducts
intermediate zone 2’6” above
1’ below
blow off valve temperature zone
high temperate zone 7’ in front of blow off valve
maximum protection area of an extended coverage head is __ sq ft
400 sq ft
extended coverage sprinklers must be a minimum of __ ft apart
8 ft apart
Extended coverage sprinklers use the __ times rule instead of the 3 times rule
4 times rule
CMSA sprinklers are permitted in __, ___, or ___ systems
wet, dry, or preaction systems
CMSA sprinklers max spacing
12ft
where can sprinklers be omitted?
bathrooms in dwelling units less than 55 sq ft closets <= 24 sq ft in hotels and motels closets <= 6 sq ft in sleeping units of hospitals electrical rooms where: only electrical equipment 2hr fire rated walls no storage only k-class fluid electrical equipment
