Formfleisch
2009-07-07 00:50:56
- #1
Hello Danton,
a few days have passed and I hope that you or someone here will check back again...
I removed the old floor slabs and excavated the ground to about 20 - 25 cm; more was not possible because there is extremely compacted blast furnace slag in the middle of the area. Shoveling the otherwise very dusty soil was also a hard job, as it was mixed with a lot of construction debris.
Then I commissioned the container service to pick up the cubic meter of screed dust from the attic and to deliver gravel starting at a grain size of 2 cm. Unfortunately, 1.5 tons of gravel 2-8 mm (!) were delivered.
So I squatted down and spent several hours smashing the ex-foundation / old bricks right on site with a hammer, i.e., I directly beat the fragments into the soft dust (5-15 cm layer). Hoping that this would create a reasonably load-bearing and capillary-breaking base, I filled in the gravel in a thickness of about 10 cm and leveled it off.
Now the questions:
1. Does this layer now have to be strongly compacted, and if so, with a vibrating plate? Will this even work with the round and fine-grained gravel?
2. Is it sensible to apply an additional bed, e.g., of crushed stone? At the moment, the slabs would exceed the surrounding level by about 2 cm.
3. Should I additionally secure the edges all around with curb stones? The surrounding soil seems very firm and mixed with construction debris...
If I distribute the pressure of the floor evenly over the beam supports, almost nothing can go wrong, right? The load of the walls and the roof rests on the outer wall of the stone shed or on the point foundations. That would then be a kind of "floating installation."
a few days have passed and I hope that you or someone here will check back again...
I removed the old floor slabs and excavated the ground to about 20 - 25 cm; more was not possible because there is extremely compacted blast furnace slag in the middle of the area. Shoveling the otherwise very dusty soil was also a hard job, as it was mixed with a lot of construction debris.
Then I commissioned the container service to pick up the cubic meter of screed dust from the attic and to deliver gravel starting at a grain size of 2 cm. Unfortunately, 1.5 tons of gravel 2-8 mm (!) were delivered.
So I squatted down and spent several hours smashing the ex-foundation / old bricks right on site with a hammer, i.e., I directly beat the fragments into the soft dust (5-15 cm layer). Hoping that this would create a reasonably load-bearing and capillary-breaking base, I filled in the gravel in a thickness of about 10 cm and leveled it off.
Now the questions:
1. Does this layer now have to be strongly compacted, and if so, with a vibrating plate? Will this even work with the round and fine-grained gravel?
2. Is it sensible to apply an additional bed, e.g., of crushed stone? At the moment, the slabs would exceed the surrounding level by about 2 cm.
3. Should I additionally secure the edges all around with curb stones? The surrounding soil seems very firm and mixed with construction debris...
If I distribute the pressure of the floor evenly over the beam supports, almost nothing can go wrong, right? The load of the walls and the roof rests on the outer wall of the stone shed or on the point foundations. That would then be a kind of "floating installation."