L
LStein-Freund15 Jul 2018 15:20Hello dear forum community,
we need to build two retaining walls, each 80 cm (31.5 inches) high, along the boundary with our neighbor to support our two parking spaces. The development plan states that retaining walls are only permitted up to a maximum height of 80 cm (31.5 inches) and must be constructed as "dry walls" (without mortar or adhesive). I have already found out that dry walls do not necessarily have to be made from natural stones, as long as the stones are neither glued nor mortared together. Additionally, the estimate from our architect is only about one-third of the price quoted by the landscaping company.
Unfortunately, my partner believes that support with plant bricks, which can also be built by oneself, is insufficient to bear the load of two cars.
Now I am wondering if the use of angle blocks would be possible, and whether this would still be considered a dry wall since the individual blocks are also not glued or mortared together, and a dry wall can be built from concrete masonry units.
So far, I have avoided asking the municipality to prevent them from insisting on natural stones.
Thank you all very much for your opinions.
we need to build two retaining walls, each 80 cm (31.5 inches) high, along the boundary with our neighbor to support our two parking spaces. The development plan states that retaining walls are only permitted up to a maximum height of 80 cm (31.5 inches) and must be constructed as "dry walls" (without mortar or adhesive). I have already found out that dry walls do not necessarily have to be made from natural stones, as long as the stones are neither glued nor mortared together. Additionally, the estimate from our architect is only about one-third of the price quoted by the landscaping company.
Unfortunately, my partner believes that support with plant bricks, which can also be built by oneself, is insufficient to bear the load of two cars.
Now I am wondering if the use of angle blocks would be possible, and whether this would still be considered a dry wall since the individual blocks are also not glued or mortared together, and a dry wall can be built from concrete masonry units.
So far, I have avoided asking the municipality to prevent them from insisting on natural stones.
Thank you all very much for your opinions.
Hello
I think 80cm (31.5 inches) as a dry stone wall in the traditional sense is quite ambitious. Or rather, not very practical. The stones in a dry stone wall are only wedged together. How thick would it need to be to withstand the lateral earth pressure from 80cm (31.5 inches) of soil? I would use L-shaped retaining blocks set properly in concrete instead. Possibly faced with natural stone slabs on the side visible to the neighbor. That should satisfy everyone.
Consider whether to proceed like this, and if you get official objections from the building authority or planning department, you should have a strong argument.
Steven
I think 80cm (31.5 inches) as a dry stone wall in the traditional sense is quite ambitious. Or rather, not very practical. The stones in a dry stone wall are only wedged together. How thick would it need to be to withstand the lateral earth pressure from 80cm (31.5 inches) of soil? I would use L-shaped retaining blocks set properly in concrete instead. Possibly faced with natural stone slabs on the side visible to the neighbor. That should satisfy everyone.
Consider whether to proceed like this, and if you get official objections from the building authority or planning department, you should have a strong argument.
Steven
K
Knallkörper16 Jul 2018 09:19An 80 cm (31.5 inches) high dry stone wall is not a problem. Much higher walls are also possible. We use it to support 100 cm (39.4 inches), for example, our neighbor has a 160 cm (63 inches) high heavy-duty dry stone wall made of large sandstone blocks. This type is very common in our area. The soil pressure in lightweight walls is compensated by the slope, which works well.
Angle retaining walls are, of course, not dry stone walls. If dry stone walls are specified in the building plan / planning permission, it is usually to prevent the use of concrete angle retaining walls.
Angle retaining walls are, of course, not dry stone walls. If dry stone walls are specified in the building plan / planning permission, it is usually to prevent the use of concrete angle retaining walls.
K
Knallkörper16 Jul 2018 09:23Addition: "No problem" naturally only means that it is technically feasible. Constructing a proper dry stone wall is quite challenging from a craftsmanship perspective, especially when using natural stone.
Nordlys schrieb:
That kind of wall would work. Is that actually your parking space?
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