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3.3
Trench dimensions
The infiltration ditch is sized according to work sheet DWA A-138. Please contact us for free sizing.
The company GRAF recommends a circumferential working space of 1 m in order to carry out tasks like:
connecting pipes and vent lines (see section 5.4)
wrapping in geotextile (see section 5.3)
wrapping in plastic liner (see section 6)
without any problems.
The trench height depends on the product selection, traffic loading and planned connection heights /
shafts.
The trench must also be designed in accordance with DIN 4124 "Excavation pits and trenches". In particu-
lar, this includes the slope angle. With installation depths
type of soil.
3. Selecting the location
9 /
1.25 m, this must be selected according to the
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