Sprinkler Installation

Question 1

Standard spray sprinklers heads were approved in ___, listed in ___

Answer 1

Approved in 53’ and listed in 58’

Question 2

The available ___ and the amount of ___ discharged will determine the spray pattern

Answer 2

pressure and amount of water

Question 3

Deflectors do what?

Answer 3

Break up the water to form a specific pattern.

Question 4

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.

Answer 4

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.

Question 5

A standard spray sidewall sprinkler forms what kind of spray pattern? What two ways can they be orientated?

Answer 5

A quarter of a sphere

There are vertical and horizontal sidewall sprinklers

Question 6

What is the profile?

Answer 6

Profile is the distribution discharge pattern of a sprinkler

Question 7

What is the throw?

Answer 7

Throw is the distance that the water spray(discharge) travels from a sprinkler in one direction.

Question 8

How to identify a sprinkler?

Answer 8

1-2 uppercase letters to identify manufacturer
k-factor
deflector characteristic
pressure rating
thermal sensitivity

Question 9

k factors are all based on the ___ k factor.

Answer 9

5. 6 k factor

11. 2 k factor would discharge 200% of a 5.6k factor

Question 10

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

Answer 10

> 3 inches - highest point

< 3 inches - lowest point

Question 11

if the deflection or sag in the insulation exceeds ___ inches. The deflector distance shall be measured to the high point of the insulation.

Answer 11

6 inches

Question 12

Sprinklers shall be installed under fixed obstructions over __ ft

Answer 12

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

Question 13

If obstructions are less than __ inches from the floor you do not need to put a sprinkler head under it.

Answer 13

24 inches from the floor

Question 14

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.

Answer 14

400 sq ft

Question 15

Quick response heads are not allowed in which hazard occupation classification.

Answer 15

extra hazard occupancies

Question 16

Panel construction - formed by beams/girders/trusses

max area of 300 sq ft
penetrations are filled to trap hot gases.

Answer 16

Heads can be lowered where their is panel construction.

Ex. between web joists

Question 17

Bar joists with fireproofing >30%

Answer 17

If water can’t pass it obstructed construction

Question 18

Small room rule

Answer 18

A compartment of light hazard occupancy classification having unobstructed construction and a floor area not exceeding 800 sq ft

Question 19

Small room rule

Answer 19

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

Question 20

Sprinklers must be a minimum of __ inches from any wall

Answer 20

4”

heat won’t collect right in the corner of the wall.

Question 21

Sprinkler heads cannot be within __ ft of each other

Answer 21

6 ft or else baffles will be required.

Question 22

Baffles shall not be less than __ inches long and __ inches high

Answer 22

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

Question 23

unobstructed construction sprinklers must be __ inch to __ inches down from the ceiling

Answer 23

1-2 inches from ceiling

Question 24

If a vertical change in the ceiling creates a distance of more than __ inches it becomes a wall.

Answer 24

36 inches

Question 25

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.

Answer 25

1-6 inches below the obstruction but to a maximum of 22inches

Question 26

Sprinklers in sloped ceiling should all be ___ ____ sprinklers

Answer 26

quick response sprinklers

Question 27

Sprinkler heads have to be parallel to ceilings even if they are sloped.

Answer 27

True

Question 28

shadow areas of a sprinkler are permitted as long as the cumulative dry areas do not exceed ___ sq ft per sprinkler

Answer 28

15 sq ft per sprinkler

Question 29

finished soffit < 8 inches

finished soffit >8 inches

Answer 29

If the finished soffit is >8 a sprinkler underneath is required.

Question 30

• 1 head sidewall
  finished soffit < 8 inches
  finished soffit >8 inches

2* heads sidewalls on either side of finished soffit these numbers become ___

Answer 30

If the finished soffit is >8 a sprinkler underneath is required.

16 inches

Question 31

Standard sidewall sprinklers minimum distances

Answer 31

4-6 from ceiling

6-18 when listed

Question 32

vertical sidewalls distances from walls

Answer 32

4-6 inches from wall

horizontal sidewalls can be right on the wall.

Question 33

sidewall sprinklers should not be installed less than __ ft from light fixtures or similar obstructions.

Answer 33

4 ft

Question 34

sidewall sprinklers

there cannot be an obstruction within __ ft of the deflector

Answer 34

4 ft

Question 35

sidewall sprinkler

3 times rule

Answer 35

the distance between the sprinkler and the obstruction has to be a minimum of 3x the largest dimension of the obstruction.

Question 36

sidewall sprinklers

the clearance between the deflector and the top of storage shall be __ inch or greater

Answer 36

18 inches or greator

Question 37

sidewall sprinklers

the clearance between the deflector and the top of storage shall be __ inch or greater

Answer 37

18 inches or greater

Question 38

special sprinklers rules

maximum protection area should not exceed ___ sq ft

Answer 38

maximum protection area should not exceed 400 sq ft

Question 39

the temperature rating for heads
orange or red
yellow or green
blue
purple
black

Answer 39

orange or red 135-170
yellow or green 175-225
blue 25-300
purple 325-375
black 375+

Question 40

relation of maximum ceiling temperature to the temperature rating of heads

Answer 40

temperature rating of head is generally 25 higher than what you would expect for the maximum ceiling temperature

Question 41

the high-temperature zone around a unit heater

Answer 41

7 feet radius
7 feet above
2 feet below
requires high temperature heads

Question 42

intermediate temperature zone around a unit heater

Answer 42

7 - 20 feet @ 30 degree angle

requires intermediate temperature head

Question 43

steam main temperature zones(Non-insulated) ex. ducts

Answer 43

intermediate zone 2’6” above

1’ below

Question 44

blow off valve temperature zone

Answer 44

high temperate zone 7’ in front of blow off valve

Question 45

maximum protection area of an extended coverage head is __ sq ft

Answer 45

400 sq ft

Question 46

extended coverage sprinklers must be a minimum of __ ft apart

Answer 46

8 ft apart

Question 47

Extended coverage sprinklers use the __ times rule instead of the 3 times rule

Answer 47

4 times rule

Question 48

CMSA sprinklers are permitted in __, ___, or ___ systems

Answer 48

wet, dry, or preaction systems

Question 49

CMSA sprinklers max spacing

Answer 49

12ft

Question 50

where can sprinklers be omitted?

Answer 50

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