41
Geberit Drainage Systems
System installation
Rigid installation with anchor brackets
Anchor brackets for rigid fixings must be stronger than
possible expansion or contraction forces (P) of the Geberit
HDPE pipe (see table opposite).
This table shows that in the low temperature range
(Column 2) the forces are greater than in the high
temperature range (Column 1).
Whilst Geberit manufactures Pluvia anchor brackets
for its system, it does not manufacture or supply drop
rods for connecting the brackets to the ceiling. These
must be sourced from a suitable supplier that can
verify they can withstand the forces shown in the
table above.
5.2.3
Rigid fixing
Principal:
Any variation in length must be prevented by embedded
fixed points (electrofusion couplings, branches, bends or
collar bushes) or by the provision of corresponding fixed
point structures.
Rigid fixing of the Geberit HDPE system can be achieved
by using a proprietary bracketry system (that may in
incorporate struts or very strong drop rods) or the Geberit
Pluvia rail system, as outlined below.
Geberit
Column 1
Column 2
HDPE Pipe
(Normal installation) (Outside installation)
Ø
+20°C to +90°C
+20°C to -20°C
force kg
force kg
40
85
221
50
105
277
56
125
315
63
140
365
75
170
428
90
240
598
110
350
882
125
460
1165
160
740
1865
200
940
2375
250
1490
3750
315
2350
5915
Ø 40 - 315
