Page 195 - Tyco-Grooved-Fire-Protection-Products-Installation-Handbook

ENGINEERING REFERENCE 193
Water Feet Head Conversion
Water Pressure to Feet Head
Pounds Per Square Inch
Feet Head
Pounds Per Square Inch
Feet Head
1
2.31
100
230.90
2
4.62
110
253.93
3
6.93
120
277.07
4
9.24
130
300.16
5
11.54
140
323.25
6
13.85
150
346.34
7
16.16
160
369.43
8
18.47
170
392.52
9
20.78
180
415.61
10
23.09
200
461.78
15
34.63
250
577.24
20
46.18
300
692.69
25
57.72
350
808.13
30
69.27
400
922.58
40
92.36
500
1154.48
50
115.45
600
1385.39
60
138.54
700
1616.30
70
161.63
800
1847.20
80
184.72
900
2078.10
90
207.81
1000
2309.00
Feet Head of Water to PSI
Feet Head
Pounds Per Square Inch
Feet Head
Pounds Per Square Inch
1
0.43
100
43.31
2
0.87
110
47.64
3
1.30
120
51.97
4
1.73
130
56.30
5
2.17
140
60.63
6
2.60
150
64.96
7
3.03
160
69.29
8
3.46
170
73.63
9
3.90
180
77.96
10
4.33
200
86.62
15
6.50
250
108.27
20
8.66
300
129.93
25
10.83
350
151.58
30
12.99
400
173.24
40
17.32
500
216.55
50
21.65
600
259.85
60
25.99
700
303.16
70
30.32
800
346.47
80
34.65
900
389.78
90
38.98
1000
433.00
Note:
One pound of pressure per square inch of water equals 2.309 feet of water at 62°F. Therefore to find the Feet Head of of water for any pressure not given in the table above, multiply the PSI
by 2.309
Note:
One foot of water at 62°F equals 0.433 PSI. To find the PSI for any Feet Head not given in the table above, multiply the Feet Head by 0.433