CEA 4001 - Page 140

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NOTE: figure H7 gives an example of a pipe layout in accordance with Tables G13 and G14 and design
points
from which the pipe diameters shall be fully calculated.
Table 47: Range pipe diameter for HH installations with pressure and flow characteristics
as given in Table 8
(1 or 2)(G11)
Range pipes
Layout
Diameter
mm
Maximum number of
sprinklers
fed by pipe
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
1
2
2
3
2
3
4
All other range pipes
All layouts
25
32
3
4
Table 48: Distribution pipe diameters downstream of the design point in HH installations with pressure and
flow characteristics as given in Table 8 (1) (G12)
Distribution pipes
Diameter
mm
Maximum number of
sprinklers fed by distributio
n
pipe
Pipes at extremities of system
32
40
50
65
80
100
2
4
8
12
18
48
Pipes between the design points
and the control valve set
To be calculated in accordance with G.2.5
Table 49: Distribution pipe diameters downstream of the design point in HH installations with pressure and flow
characteristics as given in Table 8 (2,3 or 4) (G13)
Distribution pipes
Diameter
mm
Maximum number of
sprinklers fed by
distribution pipe
Pipes at extremities of system
50
65
80
100
150
4
8
12
16
48
Pipes between the design
points
and the control valve
set
To be calculated in accordance with G.2.5