Download Design of Water Based Fire Protection Systems PDF

TitleDesign of Water Based Fire Protection Systems
Tags Valve Building Engineering Gas Technologies Fire Sprinkler System
File Size2.0 MB
Total Pages43
Document Text Contents
Page 21

Distance from Sidewall Sprinkler
to Side of Obstruction (A)

Maximum Allowable Distance of Deflector above
Bottom of Obstruction (in.) (B)

Less than 6 in. 1
6 in. to less than 1 ft 2

1 ft to less than 1 ft 6 in. 3
1 ft 6 in. to less than 2 ft 4½
2 ft to less than 2 ft 6 in. 5¾
2 ft 6 in. to less than 3 ft 7
3 ft to less than 3 ft 6 in. 8
3 ft 6 in. to less than 4 ft 9¼
4 ft to less than 4 ft 6 in. 10
4 ft 6 in. to less than 5 ft 11½
5 ft to less than 5 ft 6 in. 12¾
5 ft 6 in. to less than 6 ft 14
6 ft to less than 6 ft 6 in. 15
6 ft 6 in. to less than 7 ft 16¼
7 ft to less than 7 ft 6 in. 17½

For SI units, 1 in. = 25.4 mm; 1 ft = 0.3048 m.
Note: For (A) and (B), refer to Figure 8.7.5.1.4.

Prepared By: Eng. Ahmed El-Beltagy 18

(NFPA 13 - Table 8.7.5.1.4) Positioning of Sprinklers to Avoid Obstructions Along the
Wall (Standard Sidewall Spray Sprinklers)




(NFPA 13 - FIGURE 8.7.5.1.4) Positioning of Sprinklers to Avoid Obstructions Along

the Wall (Standard Sidewall Spray Sprinklers)



(NFPA 13 - FIGURE 8.7.5.2.1.3) Minimum Distance from Obstruction (Standard

Sidewall Spray Sprinkler)

Page 22

Horizontal Distance (A) Minimum Vertical Distance below Deflector (in.) (B)
6 in. or less 3

More than 6 in. to 9 in. 4
More than 9 in. to 12 in. 6
More than 12 in. to 15 in. 8
More than 15 in. to 18 in. 9½
More than 18 in. to 24 in. 12½
More than 24 in. to 30 in. 15½

More than 30 in. 18
For SI units, 1 in. = 25.4 mm.
Note: For (A) and (B), refer to Figure 8.7.5.2.2.

(NFPA 13 - Table 8.7.5.2.2) Suspended or Floor-Mounted Obstructions (Standard
Sidewall Spray Sprinklers)






(NFPA 13 - FIGURE 8.7.5.2.2) Suspended or Floor-Mounted Obstructions (Standard

Sidewall Spray Sprinklers).




















Prepared By: Eng. Ahmed El-Beltagy 19

Page 42

3. Hydraulic Calculations Sheet:-


Prepared By: Eng. Ahmed El-Beltagy 39

Section Flow [gpm]

Pipe
Size
[in]

Fittings&
Devices

Pipe Equiv.
Length

[ft]

Friction
loss

[psi/ft]

Required
[psi]

Elev
[m] Notes.

SP No. 35 q 25 Elbow 90 LGTH. 0.656 PT. 20
From. 35 FTG. 2 PF. +0.523
To. 34

Q 25
1.049"

TOT. 2.656
0.197

PE. +0.284 -0.2

PKQsp =5.6

20 = 25.044
SP No. q 25 Tee LGTH. 7.55 PT. 20.81
From. 34 FTG. 5 PF. +2.472
To. 33

Q 25
1.049"

TOT. 12.55
0.197

PE.


SP No. q 25.9 Tee LGTH. 0.98 PT. 23.28
From. 33 FTG. 5 PF. -1.178
To. 36

Q 50.9
1.049"

TOT. 5.98
0.197

PE.

Assume const
friction loss
[psi/ft]

SP No. 37 q 25.9 Elbow 90 LGTH. 0.656 PT. 22.1
From. 36 FTG. 2 PF. -0.523
To. 37

Q 50.9
1.049"

TOT. 2.656
0.197

PE. -0.284 +0.2

PKQsp =5.6*

3.21 =25.85
SP No. q 50.9 LGTH. 9.84 PT. 23.28
From. 33 FTG. PF. +0.9
To. 28

Q 50.9
1.61 "

TOT. 9.84
0.091

PE.


SP No. q 25.6 Tee LGTH. 7.55 PT. 24.2
From. 28 FTG. 5 PF. -2.47
To. 29

Q 76.5
1.049"

TOT. 12.55
0.197

PE.

Assume const
friction loss
[psi/ft]

SP No. 30 q 25.6 Elbow 90 LGTH. 0.656 PT. 21.73
From. 29 FTG. 2 PF. -0.523
To. 30

Q 76.5
1.049"

TOT. 2.656
0.197

PE. -0.284 +0.2

PKQsp =5.6*

92.20 =25.61
SP No. q 26.4 Tee LGTH. 0.98 PT. 24.2
From. 28 FTG. PF. -1.18
To. 31

Q 102.9
1.049"

TOT. 5.98
0.197

PE.

Assume const
friction loss

[psi/ft]
SP No. 32 q 26.4 Elbow 90 LGTH. 0.656 PT. 23.02
From. 31 FTG. 2 PF. -0.523
To. 32

Q 102.9
1.049"

TOT. 2.656
0.197

PE. -0.284 +0.2

PKQsp =5.6*

2.22 =26.39
SP No. q 102.9 LGTH. 9.84 PT. 24.2
From. 28 FTG. PF. +3.29
To. 25

Q 102.9
1.61 "

TOT. 9.84
0.334

PE.


SP No. q 28 Tee LGTH. 5.25 PT. 27.49
From. 25 FTG. 5 PF. -2.02
To. 26

Q 130.9
1.049"

TOT. 10.25
0.197

PE.

Assume const
friction loss

[psi/ft]
SP No. 27 q 28 Elbow 90 LGTH. 0.656 PT. 25.47
From. 26 FTG. 2 PF. -0.523
To. 27

Q 130.9
1.049"

TOT. 2.656
0.197

PE. -0.284 +0.2

PKQsp =5.6*

96.24 =27.97
SP No. q 130.9 LGTH. 9.84 PT. 27.49
From. 25 FTG. PF. +5.14
To. 22

Q 130.9
1.61 "

TOT. 9.84
0.522

PE.


SP No. q 30.6 Tee LGTH. 5.25 PT. 32.63
From. 22 FTG. 5 PF. -2.02
To. 23

Q 161.5
1.049"

TOT. 10.25
0.197

PE.

Assume const
friction loss

[psi/ft]
SP No. 24 q 30.6 Elbow 90 LGTH. 0.656 PT. 30.61
From. 23 FTG. 2 PF. -0.523
To. 24

Q 161.5
1.049"

TOT. 2.656
0.197

PE. -0.284 +0.2

PKQsp =5.6*

83.29 =30.6
SP No. q 161.5 LGTH. 9.84 PT. 32.63
From. 22 FTG. PF. +2.24
To. 19

Q 161.5
2.067"

TOT. 9.84
0.228

PE.


SP No. q 31.7 Tee LGTH. 5.25 PT. 34.87
From. 19 FTG. 5 PF. -2.02
To. 20

Q 193.2
1.049"

TOT. 10.25
0.197

PE.

Assume const
friction loss

[psi/ft]
SP No. 21 q 31.7 Elbow 90 LGTH. 0.656 PT. 32.85
From. 20 FTG. 2 PF. -0.523
To. 21

Q 193.2
1.049"

TOT. 2.656
0.197

PE. -0.284 +0.2

PKQsp =5.6*

04.32 =31.7
SP No. q 193.2 LGTH. 9.84 PT. 34.87
From. 19 FTG. PF. +3.13
To. 16

Q 193.2
2.067"

TOT. 9.84
0.318

PE.


SP No. q 33.2 Tee LGTH. 5.25 PT. 38
From. 16 FTG. 5 PF. -2.02
To. 17

Q 226.4
1.049"

TOT. 10.25
0.197

PE.

Assume const
friction loss

[psi/ft]
SP No. 18 q 33.2 Elbow 90 LGTH. 0.656 PT. 35.98
From. 17 FTG. 2 PF. -0.523
To. 18

Q 226.4
1.049"

TOT. 2.656
0.197

PE. -0.284 +0.2

PKQsp =5.6*

17.35 =33.21
SP No. q 226.4 Tee LGTH. 8.2 PT. 38
From. 16 FTG. 10 PF. +7.75
To. 15

Q 226.4
2.067"

TOT. 18.2
0.426

PE.



Section Flow Pipe Fittings& Pipe Equiv. Friction Required Elev Notes.

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