Saldier
2021-10-09 18:41:44
- #1
Hello dear forum,
we are planning the construction of a single-family house of about 240sqm with a slab foundation.
For this, we had a soil survey conducted and the following result came back:
Geology of the foundation area
Periglacial-fluvial deposits, sandy to sandy-silty, above Weichsel glacial moraine
Soil layers
Layer 1 0.00-0.30 m topsoil and fill OU, SW
Layer 2 0.30-2.50 m fine sand to medium sand SW
Layer 3 2.50-4.20 m medium sand, alternating clay-silty
SW, ST*
For layer 2 at < 0.5 m: For layer 2 at 0.8 m:
Ks = 36 MN / m3 at b = 1.0 m Kg = 72 MN / at b < 0.5 m
a = 300 kN / m2 a = 240 kN / m2
Soil classes:
Layer 1 1-3, Layer 2 3, Layer 3 3-4
Groundwater situation
Groundwater at 3.8-4.0 m, temporarily accumulating seepage water in the foundation area not to be expected
Foundation / earthworks
Load-bearing slab without frost skirts or strip foundations, h = 0.8 m,
Bearing layer 20-25 cm (DPr > 0.98)
Infiltration of surface water
Vertical structure with filter zone from 0.4 m in layer 2
Can anyone now tell me if this is a good or bad result?
Do I now have to expect increased costs for the slab foundation due to poor soil or am I even lucky and the opposite is the case?
I would be very happy about your experience and opinion.
Best regards,
Saldier
we are planning the construction of a single-family house of about 240sqm with a slab foundation.
For this, we had a soil survey conducted and the following result came back:
Geology of the foundation area
Periglacial-fluvial deposits, sandy to sandy-silty, above Weichsel glacial moraine
Soil layers
Layer 1 0.00-0.30 m topsoil and fill OU, SW
Layer 2 0.30-2.50 m fine sand to medium sand SW
Layer 3 2.50-4.20 m medium sand, alternating clay-silty
SW, ST*
For layer 2 at < 0.5 m: For layer 2 at 0.8 m:
Ks = 36 MN / m3 at b = 1.0 m Kg = 72 MN / at b < 0.5 m
a = 300 kN / m2 a = 240 kN / m2
Soil classes:
Layer 1 1-3, Layer 2 3, Layer 3 3-4
Groundwater situation
Groundwater at 3.8-4.0 m, temporarily accumulating seepage water in the foundation area not to be expected
Foundation / earthworks
Load-bearing slab without frost skirts or strip foundations, h = 0.8 m,
Bearing layer 20-25 cm (DPr > 0.98)
Infiltration of surface water
Vertical structure with filter zone from 0.4 m in layer 2
Can anyone now tell me if this is a good or bad result?
Do I now have to expect increased costs for the slab foundation due to poor soil or am I even lucky and the opposite is the case?
I would be very happy about your experience and opinion.
Best regards,
Saldier