Osnabruecker
2023-06-21 13:27:46
- #1
That means a density of approximately 3.2 tons per m³.
Anyone who piles up the topsoil for 1€/m2 has to put a foot on the scale when disposing of it ;)
That means a density of approximately 3.2 tons per m³.
540 m³ is of course already quite a lot for a house? And how 540 m³ then become 1,735 t is beyond me. That means a density of about 3.2 tons per m³. For clay soil we are at about 1.65-1.8 t/m³.
Hello,
my brief remarks on the long topic. Since there was especially a lot of focus on the waterproofing and the soil excavation.
Bitumen coating + dimple sheet (waterproofing against ground moisture Load case assessment according to DIN 18533-1:2017-07 as per W1.1-E)
Waterproofing according to W1.1-E can only be done without groundwater and with well-draining soils (sand/gravel).
W1.2-E would be the use of an additional drainage even with impermeable soils without groundwater. (Here the issue is the functionality of the drainage over decades and the approval feasibility).
Black or white tank must be applied with pressing water (groundwater/flood etc.) (W2.1-E).
A black tank is, as nicely quoted from Google, a thick coating by welding bitumen sheets. That is naturally something different from a double coating with bitumen paint...
White tank is WU concrete. Nowadays, actually a "grey" tank (additional joint and connection sealing on the outside) is used.
To assess the load case for the building, you of course need the soil report.
The real problem is, as already described, the earthquake zone and the resulting requirements for the cellar statics. To my knowledge, there is hardly a way around a concrete construction there.
Regarding the soil excavation, I would first stay calm. If a schedule is available, have soil samples taken (analyses are only valid for 6 months). From 01.08.2023 the EBV (Substitute Materials Ordinance) comes into effect, which changes a few things but essentially many things remain the same. If you have a specialist for earthworks, have him inform you where he takes the material and which analysis he needs. Because most acceptance points and backfilling companies still have their old acceptance criteria (LAGA/landfill ordinance/backfilling guidelines etc.). This way you save yourself double analysis costs or pressure on timing during excavation (analytics can take up to 2 weeks).
Regards
By the way, I can’t find this model in the HdH program at all, only as a semi-detached house (6.13 x 10.67 m) (?). What did you request from them (as well as from the other two)?Offer as a single-family house Plan changes from 07.01.2023 CreativHAUS Classic 143.1 incl. basement Solidly built "stone on stone" according to the Building Energy Act 11/2020 House exterior dimensions 10.63 m x 9.23 m
It was nearly 1000m3 of clay soil due to the slope and the backfilling with new material was included as well. Clay soil is not suitable for backfilling....40000 euros for earth removal? That's crazy! I requested a quote nearby and they said about 20000 euros.