Hello everyone,
I would appreciate your assessment on the following matter:
Basement dimensions: 8.16 x 9.99 meters (let’s say 8.20 x 10)
Excavation depth (see section): approximately 3 meters (10 feet)
In addition, the slope situation: I would say the basement extends about 1/3 above the existing ground level
Workspace allowance: 60 cm (2.4 inches)
Slope angle: According to the soil report, I assumed 60° (recommended between 60° and 80°)
All in all, I calculated an excavation volume of approximately 303 m³ (10,700 cubic feet). Are you getting similar numbers? Did I make a mistake somewhere?
I ask because our excavation contractor has quoted a solid 520 m³ (18,350 cubic feet). Unfortunately, I wasn’t able to reach him today to ask where this figure comes from.
Either I have made a significant error somewhere (which is why I am asking for your opinion) or there is something wrong with the quote.
Many thanks in advance!
I would appreciate your assessment on the following matter:
Basement dimensions: 8.16 x 9.99 meters (let’s say 8.20 x 10)
Excavation depth (see section): approximately 3 meters (10 feet)
In addition, the slope situation: I would say the basement extends about 1/3 above the existing ground level
Workspace allowance: 60 cm (2.4 inches)
Slope angle: According to the soil report, I assumed 60° (recommended between 60° and 80°)
All in all, I calculated an excavation volume of approximately 303 m³ (10,700 cubic feet). Are you getting similar numbers? Did I make a mistake somewhere?
I ask because our excavation contractor has quoted a solid 520 m³ (18,350 cubic feet). Unfortunately, I wasn’t able to reach him today to ask where this figure comes from.
Either I have made a significant error somewhere (which is why I am asking for your opinion) or there is something wrong with the quote.
Many thanks in advance!
You can basically only dispose of "bad" clay. What would you want to use it for? It cannot be compacted, so it’s not suitable for areas where a terrace or paving is planned. If you have a large lawn area, you might be able to use some of it there. However, even for that, topsoil is usually more appropriate. There will definitely be a lot of excess material left over.
We do not have any clay.
Our soil is divided into two layers (three, including topsoil). Layer 2 can be used both as a subbase for filled areas and for landscaping if you want to model terrain beyond the finished level.
Layer 1 cannot be used as a subbase but is suitable for landscaping.
Both subbase preparation and landscaping will take place on our property, so both soil types could be used. In practice, it basically comes down to determining how much of each will be needed. More importantly, there must be enough space for storage and work areas. That takes priority.
So, the issue is not necessarily
“We have to remove soil because there is far too much excavation material that you cannot use”
but rather
“We have to remove soil because there is not enough space for storage and work at the same time.”
It may also turn out that everything fits. In that case, everything will be fine and we will be happy. In that scenario, the permit for off-site storage next to the property would have been unnecessary.
Our soil is divided into two layers (three, including topsoil). Layer 2 can be used both as a subbase for filled areas and for landscaping if you want to model terrain beyond the finished level.
Layer 1 cannot be used as a subbase but is suitable for landscaping.
Both subbase preparation and landscaping will take place on our property, so both soil types could be used. In practice, it basically comes down to determining how much of each will be needed. More importantly, there must be enough space for storage and work areas. That takes priority.
So, the issue is not necessarily
“We have to remove soil because there is far too much excavation material that you cannot use”
but rather
“We have to remove soil because there is not enough space for storage and work at the same time.”
It may also turn out that everything fits. In that case, everything will be fine and we will be happy. In that scenario, the permit for off-site storage next to the property would have been unnecessary.