ᐅ Sieve size for gravel cells on a slope

Created on: 4 Jul 2022 12:31
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SR_1987
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SR_1987
4 Jul 2022 12:31
Hello everyone,

I want to install gravel grids in my driveway and fill them with crushed stone. The approved sieve size according to the manufacturer is 5 to 25mm (0.2 to 1 inch).

Which sieve size would you recommend for installation on a slope? Would smaller sizes, for example 5 to 8mm (0.2 to 0.3 inch), be better, or rather larger stones?

Maybe someone here has experience with this.

The surface will be used both on foot and by car.

(These are XL grids without weed control fabric, which can be connected to each other.)

Thanks in advance
rick20185 Jul 2022 21:58
You mean those plastic honeycomb grids? Don’t bother if vehicles will be driving or even turning on them. After a few years, they will all break, no matter the manufacturer or price. We also considered them for the grass in our driveway.
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SR_1987
5 Jul 2022 22:36
rick2018 schrieb:

After a few years, they all break. No matter the manufacturer or how expensive.

You seem to have a lot of experience with this? May I ask how you came to that conclusion?

Furthermore, that doesn’t really answer my question. I would appreciate constructive responses ;-)

Best regards
rick20185 Jul 2022 22:53
We have spoken with several manufacturers and companies that install these systems. In the end, all admitted that they are not truly durable.
Inspections of various sites have confirmed this as well.
Even the versions designed for truck traffic only last a few years under passenger car use.
The most critical areas are turning zones or places where the wheels are frequently turned—exactly your case.
Search for gravel grids KG30, and you will likely come across a major manufacturer.
With such a grid, smaller gravel sizes can also be used.
This kind of system also requires an appropriate substructure.
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SR_1987
5 Jul 2022 22:56
Okay, well, now it’s too late anyway, the honeycombs have been purchased and are ready for installation. In my driveway, vehicles basically only drive straight in and back out. No turning around, steering wheels turned while stationary, or anything like that. It’s not possible and not necessary.
rick20185 Jul 2022 22:58
I would rather use large stones. They don’t get stuck in the profile as much…