5 Installation at Site
22 of 62
SRA
2334.810/03-EN
Installation at high groundwater level
ü
Keep the construction pit dry for the entire construction time. The system for
lowering the groundwater level (if available) has been started up.
1. Excavate the construction pit to DIN 4124 / DIN 18300 and VOB. Observe the
slopes of the respective soil class (slope angle, planking/strutting requirements,
etc).
- 1 -
Fig. 10:
Preparing the construction pit
2. Provide a minimum working space of 50 cm on the pit floor in every direction.
3. Level the pit floor.
4. Place a horizontal layer of approximately 100 mm of sand or fine gravel (1) on
the level pit floor.
5. Pour construction concrete (2) onto the sand layer / fine gravel layer to cover it
with a horizontal bedding layer of approximately 150 mm.
1
2
1
5
0
1
0
0
Fig. 11:
Pouring in a bedding layer
Содержание SRA
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