Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Bas. > Standard Spray Sprinklers > Flashcards

Standard Spray Sprinklers Flashcards

1
Q

Predetermined testing bodies for sprinkler heads are

A

UL, ULC, FM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Thread sizes for sprinkler heads are

A

1/2”, 3/4, 1”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the sprinkler orfice held close with

A

Cap/plug that is secured by fusible element, tensioned with screw in deflector

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What determines K factor

A

Orfice size

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How much psi is required to create proper spray pattern

A

7psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How many gpm is required to create proper spray pattern

A

15gpm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the standard spray k factor

A

5.6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

K factor is

A

The amount of water that will flow through the orfice with 1 pound of pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the formula for figuring out the K factor, GPM, or PSI

A

Q
———
K | √P

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How much water is directed downwards from sprinkler discharge

A

100%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What sprinkler must meet the minimum flow requirements?

A

The furtherest sprinkler from the fire pump/incoming

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How sprinklers must be permanently marked with

A

-1-2 letters which indicate manufacturer
-3-4 numbers which indicate k factor, deflector characteristics, pressure rating, thermal sensitivity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Fusible element temp is selected based on

A

Ceiling temp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Why does a frangible bulb burst when heated

A

The liquid expands, compresses the air bubble, continues until glass breaks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are solder link heads mostly constructed of

A

Alloy with pre determined melting points

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Standard response response time index is

A

> 80 (greater than 80)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Fast response sprinklers response time index is

A

<50 less than

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Response time index is calculated

A

(Meters-Second) 1/2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

How must frame of upright be installed

A

Parallel to branch line piping to minimize obstruction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

When must protective caps be removed

A

Right after install

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Sprinklers subject to mechanical damage must be protected with

A

Listed guards

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Available corrosive resistant coating include

A

Brass, chrome, polyester, PTFE, Wax, ENT, stainless

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Who can paint heads

A

Only manufacturer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Head box shall contain what in addition to sprinklers

A

Paper with sprinkler identification number, or manufacturer, model, orfice, deflector type, thermal sensitivity, pressure rating

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
How many heads in head box on a site with less then 300 heads
6
26
How many heads in a head box on a site with 300-1000 heads
12
27
How many heads in a head box on a site with >1000 heads
24
28
Where can standard spray upright and pendants be installed
-all hazard classification types -Quick response must be installed in light hazard -Quick response not permitted to be installed in Extra hazard
29
Standard spray sidewalls can be used
Light & ordinary hazard with smooth, slopped, or flat ceilings Not permitted in extra hazard Below overhead doors
30
Max coverage area and max space for upright/pendant in light hazard
225ft2 and 15 feet
31
Max coverage area and max space for upright/pendant in ordinary hazard
130ft2 and 15’
32
Max coverage area and max space for upright/pendant in extra hazard
100ft2 and 12’
33
What’s the minimum distance from walls sprinkler heads need to be
4”
34
Small room only applies if
It’s light hazard Unobstructed construction 800sq ft max 9’ max from one wall Cannot exceed max coverage
35
3 types of sprinkler obstructions are
-To sprinkler discharge -Spray pattern development -To reach hazard
36
Additional protection is required below obstructions greater then
4 feet
37
Standard spray side wall max coverage and max space in light hazard
196sq ft and 14’
38
Standard spray side wall max coverage and max space in ordinary hazard
100 sq ft and 10’
39
NFPA 13R is
Standard for sprinklers in buildings no more then 4 stories and no higher then 60’
40
NFPA 13D is the standard for
Dwellings/homes
41
Where are quick response sprinklers permitted with NFPA 13R
In compartments and where no more then 4 sprinklers are in a unit
42
What’s the minimum density within a compartment NFPA 13R
0.10/ft squared
43
How are non residential heads installed in NFPA 13R and 13D
In accordance with NFPA 13
44
Where are quick response heads permitted in NFPA 13D
Closets, saunas, steam rooms
45
Residential sprinklers can only be used on
Wet systems only
46
Residential sprinklers must be how far from Ceiling
1-4”
47
Bathrooms under how big do not need sprinklers
55sq feet and under
48
Closets cannot exceed what size
24ft sq
49
Water delivery time for residential
15 seconds
50
If a dry system is installed per NFPA 13R, what heads are to be used
Standard spray
51
Minimum drain for NFPA 13R is
1” plus 1/2” Auxiliary drain on dry systems that may freeze if needed
52
NFPA 13D minimum size drain is
1/2”
53
How is pipe pitched to drain in NFPA 13D
1/4” per 10’
54
What is not required on NFPA 13D?
Fire department connection
55
FDC is required in NFPA 13R if
The building exceeds 2000ft sq or more then one storey
56
Minimum size for the FDC NFPA 13R
1-1/2”
57
NFPA 13R, more then 20 heads, what is the testing procedure
Hydro test for 200psi for 2 hours
58
NFPA 13R where there is less then 20 heads how must testing be done
50 psi over normal system pressure
59
Small room rule only applies in rooms
800 sq ft and less
60
How far below ceilings can an standard spray upright be? (unobstructed)
1-12”
61
How far below ceilings can an standard spray upright be? (obstructed)
1-6” below structural member, no more then 22” from ceiling
62
What is the clearance to storage for standard spray uprights and pendants
18”
63
What is the minimum distance between standard spray uprights and pendants
6 feet
64
What is the distance below ceilings for a standard spray side wall
4-6”
65
How far must standard spray sidewalls be apart
6 feet
66
Max ceiling temp for ordinary head
100F
67
Max ceiling temp for intermediate head
150F
68
Max ceiling temp for high head
225F
69
Max ceiling temp for extra high head
300F
70
Temp rating for ordinary heads
135-170F
71
Temp rating for intermediate heads
175-225F
72
Temp rating for high heads
250-300F
73
Temp rating for extra high heads
325-375F
74
Colour code for ordinary head
Uncoloured or black
75
Colour code for intermediate head
White
76
Colour code for high head
Blue
77
Colour code for extra high head
Red
78
Glass bulb colour ordinary head
Red or orange
79
Glass bulb colour intermediate head
Green or yellow
80
Glass bulb colour high head
Blue
81
Glass bulb colour extra high head
Purple
82
Where can hi temp heads be used
Ordinary and extra hazard
83
When installing upright sprinklers on a 6” main, what is the minimum length the candle can be
18”
84
Ceiling pockets in NFPA 13R and D cannot exceed
100ft cubed
85
Ceiling pocket in NFPA 13R and D cannot exceed _____ in depth
12”
86
Ceiling pocket in NFPA 13 cannot exceed
1000ft cubed
87
Ceiling pocket in NFPA 13 cannot exceed ____ in depth
36”

Bas. (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions