ᐅ Slope Stabilization – Concrete Blocks or Car Tires?

Created on: 21 Feb 2021 19:57
L
Lüftung_KWL_
Hello,

I want to stabilize the slope on my property (27m long) to create a usable, additional level.
My current plan is to stabilize only about 10m of it, since that area is the most important to have level.
This would give me a nice flat area about 4.1m long (13.5 feet).

I am looking for the most cost-effective solution for a steep embankment.
See the picture:

Technical drawing: slope stabilization with planting blocks, stairs on the left, tree on the right, terrain profile.


Someone told me that using old tires is the cheapest option and then planting ground cover on top.
But somehow I find that a bit odd.

What do you think?
Thanks!
Y
ypg
22 Feb 2021 00:31
That is an extremely steep slope. What exactly is "down there"? In our area, such a steep incline would not be allowed, as the fill slope is limited to a maximum of 30 degrees. How is it where you are? Do you have full freedom with this?
L
Lumpi_LE
22 Feb 2021 06:59
People have ideas. Usually, at worst, only property damage occurs.

Using tires is basically possible. However, you don’t just stack them; each tire must be anchored in the backfill.

This means you first have to excavate the slope 3–5 meters deep (10–16 feet) and then build it up in layers.

Your rough estimate of 1000€ plus labor doesn’t really support that.

The tires are free, but this involves approximately 5 x 5 x 10 = 250 square meters (2700 square feet) of soil reinforcement. That puts you between 10,000 and 20,000€.
Y
Ysop***
22 Feb 2021 07:31
I definitely wouldn’t start without first checking whether it’s even possible. If it is, it will be expensive 🙂
B
borderpuschl
22 Feb 2021 09:23
Take a look at Allan Block. These can be used for slope stabilization. They are secured with gravel and geogrid. An angle of 87° is possible.
N
nordanney
22 Feb 2021 09:32
borderpuschl schrieb:

Take a look at Allan Block. These are approved for slope stabilization. They are reinforced with gravel and geogrid. An angle of 87° is possible.

But that is quite far from cheap and simple. And at that height, wouldn’t you still need drained concrete, or can these blocks now be stacked that high with just gravel?
H
haydee
22 Feb 2021 09:39
Structural engineering is essential. It will determine the required amount of steel and concrete.

Does the building permit / planning permission allow changes to the terrain?

I would never use car tires. They contain toxic substances that should not be released into the environment.