P
Projekt 20125 Sep 2012 21:23Hello everyone,
a quick question for the group:
How should a concrete slab be positioned in relation to the top of the ground? Should the bottom edge of the slab be level with the top of the ground?
Or, for example, can I reduce the depth of the frost protection strip from the required 80cm (31 inches) to 60cm (24 inches) if there is at least a 20cm (8 inches) thick slab above it, so that the total depth still equals 80cm (31 inches)?
Thanks and regards,
Projekt2012
a quick question for the group:
How should a concrete slab be positioned in relation to the top of the ground? Should the bottom edge of the slab be level with the top of the ground?
Or, for example, can I reduce the depth of the frost protection strip from the required 80cm (31 inches) to 60cm (24 inches) if there is at least a 20cm (8 inches) thick slab above it, so that the total depth still equals 80cm (31 inches)?
Thanks and regards,
Projekt2012
Hello,
Frost protection skirts should be positioned 80cm (32 inches) below the ground surface. Whether you can reduce this depth or need to increase it should be determined by the soil expert. It always depends on the type of soil and the frost sensitivity of the area...
What specifications has your structural engineer given regarding the depth?
Best regards
Frost protection skirts should be positioned 80cm (32 inches) below the ground surface. Whether you can reduce this depth or need to increase it should be determined by the soil expert. It always depends on the type of soil and the frost sensitivity of the area...
What specifications has your structural engineer given regarding the depth?
Best regards
P
Projekt 20126 Sep 2012 09:28Hello,
The structural calculations are still in progress... This is just about a statement from a builder who thinks that the 80cm (31.5 inches) frost protection depth can basically be offset by the 20cm (7.9 inches) thickness of the concrete slab, thus saving 20cm (7.9 inches) on the frost protection itself... Therefore, the question is whether the bottom edge of the slab equals the finished ground level... In my opinion, it wouldn’t be that simple to offset it otherwise... That would only really work if the top of the slab equals the finished ground level, right?
Best regards
Projekt 2012
The structural calculations are still in progress... This is just about a statement from a builder who thinks that the 80cm (31.5 inches) frost protection depth can basically be offset by the 20cm (7.9 inches) thickness of the concrete slab, thus saving 20cm (7.9 inches) on the frost protection itself... Therefore, the question is whether the bottom edge of the slab equals the finished ground level... In my opinion, it wouldn’t be that simple to offset it otherwise... That would only really work if the top of the slab equals the finished ground level, right?
Best regards
Projekt 2012
Projekt 2012 schrieb:
That would actually only be possible if the top of the foundation slab equals the natural ground level.....right???Exactly!
P
Projekt 20126 Sep 2012 19:56Thanks for the quick clarification!
What do you think about the claim that using foam glass gravel under the slab and extending about 50cm (20 inches) beyond the edges of the load-bearing slab can eliminate the need for concrete frost protection strips, i.e., frost resistance is ensured this way? Are there any experiences with this?
Regards
What do you think about the claim that using foam glass gravel under the slab and extending about 50cm (20 inches) beyond the edges of the load-bearing slab can eliminate the need for concrete frost protection strips, i.e., frost resistance is ensured this way? Are there any experiences with this?
Regards
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