Base for holiday lodge - Wanting cost effective base for lodge

[brodie2000]

Hi,

I am hoping to get some advice.

I have bought a holiday lodge (9M x 6M) to put in my garden as additional living/storage space for 3 - 4 years. This is basically 2 static caravans bolted together. I have got planning permission and was going to get a design for the concrete base and two retaining walls. The quote from the structural enginner for this design only seemed quite steep at £1500 +vat so I am getting some more.

However, it has been suggested that I could use blacktop for the area instead of a concrete base and simplly 'park' the lodge on this with some anchors. I have taken this a step further and wondered if type 1 hardcore might be sufficent with some steel spreader plates.

This is only going to be used for 3 - 4 years so I dont want to spend a fortune.

Does anyone have an tips?

Also, do I need a structural engineer for a retaining wall or could a competent brick layer do this?

Thanks

[seanandruby]

depends on the height of the wall.

[lutonlagerlout]

it does seem a little steep,for a base and a reataining wall i would have thought half that amount
but yes you do need a design for a retaining wall
if you bodge it it may not last 3-4 years and what is the point in that?
LLL

[GB_Groundworks]

regarding the base for it retianing wall aside we did some for 4 large porta cabins at our rugby club, cleared the soil off the area, then put concrete pads in where the feet of the cabins sat. then built solid pillars in concrete commons with a 60mm thick council grey on top. this was on sloped site so we had to level them up. then we stoned up and compacted around them with type 1.