Hello
I have dug a large hole and will pour a concrete slab (450 x 500 cm (177 x 197 inches)) in it. On top of that, I will place formwork blocks. It will be something like a vaulted cellar but without the vault.
The soil is natural clay. I am still unsure whether to use gravel or RCL as the bottom layer. RCL was used under my house, and the road I built next to my house is also constructed with RCL. It is simply cheaper. Are there any advantages to gravel besides it being guaranteed environmentally friendly?
The excavation pit is approximately 500 x 550 cm (197 x 217 inches). I need to work within this space.
I plan to fill the entire base of the pit with 15 cm (6 inches) of gravel or RCL and compact it (either by vibrating or tamping). On top of that, a layer of dimpled membrane, then 20 cm (8 inches) of concrete (of course, formwork will be installed first). Two layers of reinforcing mesh should be sufficient.
Is there anything that could be criticized here?
Steven
I have dug a large hole and will pour a concrete slab (450 x 500 cm (177 x 197 inches)) in it. On top of that, I will place formwork blocks. It will be something like a vaulted cellar but without the vault.
The soil is natural clay. I am still unsure whether to use gravel or RCL as the bottom layer. RCL was used under my house, and the road I built next to my house is also constructed with RCL. It is simply cheaper. Are there any advantages to gravel besides it being guaranteed environmentally friendly?
The excavation pit is approximately 500 x 550 cm (197 x 217 inches). I need to work within this space.
I plan to fill the entire base of the pit with 15 cm (6 inches) of gravel or RCL and compact it (either by vibrating or tamping). On top of that, a layer of dimpled membrane, then 20 cm (8 inches) of concrete (of course, formwork will be installed first). Two layers of reinforcing mesh should be sufficient.
Is there anything that could be criticized here?
Steven
blockhauspower15 Jul 2016 12:57The dimpled membrane is definitely not a solution against rising damp. A capillary-breaking layer, such as coarse gravel, or waterproof concrete is effective for this purpose.
blockhauspower schrieb:
Coarse gravel, or waterproof concrete. Hello blockhauspower
Coarse gravel is quite similar to crushed stone. That’s why I asked about RCL (Road Class Layer). Is that also capillary-breaking? I will ask my building supplies dealer about the prices. Waterproof concrete is also what I have in mind. It shouldn’t be much more expensive. And in my opinion, the dimpled membrane is like both a belt and suspenders.
Steven
blockhauspower15 Jul 2016 13:13In my opinion, the rigid cellular layer (RCL) is not capillary-breaking because the material contains small capillaries or voids. In the case of coarse gravel, these are too large to allow moisture to rise.
The dimple membrane certainly doesn’t do any harm. 😉
The dimple membrane certainly doesn’t do any harm. 😉
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