fig4 2

Key

A

Longitudinal cross section

8

BackfiN

Dą Distribution layer thickness beneath

B

Plan

9

Optional end connection with

infiltration pipę, 0,15 m to 0,3 m, see

C

Cross section

ventilation and access

Table 3

1

Subsoil

10

Geotextile T

Ds min 1 m

2

Distribution layer

D,

Total depth, 0,6 m to 1,0 m

Wi Natural ground width between

3

Infiltration pipę

d₂

Backfill depth > 0,2 m

trenches > 1 m

4

Sand layer

d₃

Infiltration pipę diameter + 0 m to

IV₂ Distribution layer width 0,5- m to

5

Connection pipę

0,1 m of granular fili materiał (same

1,5 m

6

Distributon chamber

as in the distribution layer)

Li Distribution layer length < 30 m

7

Distribution pipę

Area =E (L, x W₂)