Advice on building a retaining wall

[BoxOfFrogs]

Hello

I need to build a retaining wall between a new raised lawn and a large garden shed. The wall will be 2 feet high and 20 feet long and I was looking for any advice on doing this?

I haven’t decided on which material to use, I’m open to the idea of breeze block, brick, sleepers, gabion, anything really. My main queries are around the following areas…

How do I ensure the pressure from the new raised lawn doesn’t push the retaining wall over?
Do I need to include some sort of damp proofing between the wall and soil of the raised lawn?
Do I need to worry about drainage from the lawn? (The retaining lawn is only alongside one edge of the square lawn)

A large shed is already in position approximately 18 inches from the lower side of where the wall will be built.

Any advice would be gratefully accepted

Regards

 

[stinkypup]

from my experience I've built a good base reinforced concrete with some bars left pointing up/out and used hollow concrete block placed over the bars, and then back filled after with concrete! Trust me, car smacked it and still didnt budge!

damp proofing - for what your doing I personally wouldn't bother.

You could every so often after its all done drill holes to allow water to escape as your doing it over a long distance.

hope it helps!

 

[r896neo]

Your options are In order of cost and roughly in longevity too.

Sleepers

Dry stack retaining walls such as tobermore secura lite or others

Gabions

Full masonary.

2ft is not a big height at all and i would say a well built 9 inch block wall would be up to the job. maybe step the bottom 2 courses out to 13''.

For drainage simply back filling your wall with about a 200mm channel of clean stone and then leaving some weep holes will be plenty. For dry stack or gabions then no weep holes needed.

A masonary wall will need damp proofed usually done with either a sheet of DPM or A liquid DPM painted on. This is done to stop water staining showing through onto the render or brick face.

 

[BoxOfFrogs]

Thanks for the advice, most appreciated