27
Wavin AS+
Technical Manual
Allowable waste water discharge in primary-ventilated downpipes
Primary-ventilated downpipe
Q
max
(l/s)
DN
Standard branch pipe
Branch pipe with internal radius
(swept)
60
0.5
0.7
70
1.5
2.0
80*
2.0
2.6
90
2.7
3.5
100**
4.0
5.2
125
5.8
7.6
150
9.85
12.4
200
16.0
2.0
* Minimum nominal diameter for toilets with flushing volumes of 4-6 l
** Minimum nominal diameter for toilets with flushing volumes of > 6 l
Allowable waste water discharge in secondary-ventilated downpipes
Q
max
(l/s)
Primary-ventilated
Secondary ventilation
Standard branch pipe
Branch pipe
downpipe
DN
DN
with internal radius
(swept)
60
50
0.7
0.9
70
50
2.0
2.6
80*
50
2.6
3.4
90
50
3.5
4.6
100**
50
5.6
7.3
125
70
12.4
10.0
150
80
14.1
18.3
200
100
21.0
27.3
* Minimum nominal diameter for toilets with flushing volumes of 4-6 l
** Minimum nominal diameter for toilets with flushing volumes of > 6 l
Table 11: Allowable waste water discharge in primary-ventilated downpipes conforming to DIN 12056-2.
Table 12 : Allowable waste water discharge in secondary-ventilated downpipes conforming to DIN 12056-2.
Downpipes with secondary ventilation conforming to DIN EN 12056-2 must be sized separately.
Configurations with secondary ventilation are used, for example, in waste water systems subjected to high loads.
