Stabilising a small soil bank - Path on crest of bank-how 2 stabilise?

[rmcd79]

Hi, I need to construct a pathway (approx 20m length) at the rear of a building on the crest of a 1.5m high 1:2 soil slope with sporadic vegetation. I know the soil underneath the path area consists of up to 3m of ashy fine gravel fill which also makes up the bank.

Any ideas as how to stabilise the gravelly bank, as I thought of gabions but would the soil bank need some form of impermeable layer with suitable drainage channel. This layer would separate the gabions and soil to stop the fine soil material being washed away through the gabions?

Any advice is welcome, in a bit of a pickle.

Thanks

[Tony McC]

Why not use a permeable geo-textile the spearate the soil from the gabions?

And could a geo-grid be used to 'wrap' the entire bank, and then encourage re-vegetation to hid ethe geo-grid?

[rmcd79]

Thanks for that.

Is there a recommended depth I should dig down to for the pathway, considering the quite compressible ashy material directly beneath? I'm worried that the path might crack up or sink in places due to settlement.

[Tony McC]

Depends on the type of path, and the state of what's underneath. A Geo-grid should help stabilise it enough for something like small flags or block paving, asl ong as you can construct robust edge courses.

[rmcd79]

Cheers