CEA 4001 - Page 137

137
T
Table 44: Pressure loss for design flow rates in LH installations (G8)
Nominal pipe size
Loss of pressure in pipe
Column 1
Column 2
(100 l/min)
Column 3
(225 l/min)
25
32
40
50
65
44,00
12 ,00
5,50
1,70
0,44
198,00
52,00
25,00
7,80
2,00
G.2.4 Ordinary Hazard - OH
G.2.4.1 For range and distribution pipes, the dimensions given Table G9 and G10 shall be used.
Table 45: Range pipe diameters for OH installations (G9)
Range pipes
Layout
Diameter mm
Maximum number
of sprinklers fed
Ranges at remote
end of all distribution
pipes
2 end-side layouts, last
2 ranges
3
end-side layouts,
last
3 ranges
All other layouts,
last
range
25
32
25
32
25
32
40
50
1
2
2
3
2
3
4
9
All other range pipes
All
25
32
40
50
3
4
6
9