Installation Conditions; Choice Of Location; Excavation Dimensions - Graf 230010 Instrucciones De Instalación Y Mantenimiento

3.1

Choice of location

Distance from basement > 6 m
Distance from ground water minimum > 1 m
The distance from the existing or planned trees must be at least the expected spread of the trees
crown.
3.2

Excavation dimensions

The measurements of the excavation is in accordance with the number of drainage blocks to be installed
by multiplying the length and width dimensions.
The following table gives the required earth covering and the maximum installation depth to the lower
edge of the blind drain:
Transportation loads
Short-term
Long-term
Without traffic loads
Vehicle loading
lorry 12
HGV 30
HGV 40
HGV 60
*The maximum installation depth* or earth covering* is related to the ground substance with an inside
angle of friction from ϕ
°The material or raw material specification possibly contains recycled material.
3.

Installation conditions

min. Earth covering
max. Earth covering*
max. Installation depth*
min. Earth covering
max. Earth covering*
max. Installation depth*
min. Earth covering
max. Earth covering*
max. Installation depth*
min. Earth covering
max. Earth covering*
max. Installation depth*
min. Earth covering
max. Earth covering*
max. Installation depth*
min. Earth covering
max. Earth covering*
max. Installation depth*
40,0°.
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Infiltration Tunnel
max. 100 kN/m²
max. 59 kN/m²
250 mm
3740 mm
4250 mm
250 mm
3490 mm
4000 mm
500 mm
3240 mm
3750 mm
500 mm
2740 mm
3250 mm
500 mm
2490 mm
3000 mm
750 mm
1740 mm
2250 mm
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Infiltration Tunnel Twin
max. 75 kN/m²
max. 35 kN/m²
250 mm
1480 mm
2500 mm
500 mm
1480 mm
2500 mm
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