Garden room base help

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I've taken over a bit of land that was once a farm ditch at the end of my garden, it's all above board paid the farmer the money, and he has sold the fields to a developer, and the developer has created a new system for ground water run off.

My neighbour has done the same and had a container put in its place with type 1 installed and concrete piles for it done by the builders that bought the land for a cheap rate.

At the time I didn't have the money and wasn't sure what we wanted to put at the bottom of the garden (shed, garden room, container), so just paid for the ditch to be filled in with type 1 mot, and compacted.

Problem is I really didn't think about exactly how I was going to proceed with things.

Now I'm at the point Im ready to move on with the project but feel I've screwed my self over.

The size of the garden room is to be circa 6x3.5 meters. The base needs levelling somewhat to suit the rest of the garden.

The access to the area is a bit of a sod, 140 ft from the road, with a very narrow side access garden over 2 levels with steep steps.

I thought the cheapest option would be ground screws, but pretty certain having had the type 1 laid I've screwed this option up.

Concrete over it, the shuttering should be ok, but should it be insulated and have a Dpm? Or just put dpm in and make an insulated timber frame? Pretty certain it will also require rebar, and it starts getting very expensive.

I could place blocks and have a wooden frame, but I'm concerned about movement,

I'm stuck what to do,
 
Minipiles from a rig narrow enough to access your narrow side garden, probably 150mm diameter cased through the MOT fill and augured to depth. Central rebar and concreted. Possibly six piles on a 3m x 3m grid to support your base frame.
 
so just paid for the ditch to be filled in with type 1 mot, and compacted.
I dont see the issue. A garden room is not massively heavy and its perfectly fine for it to sit on a 100mm concrete base over compacted type 1. This sounds like a standard concrete pad base to me.
 
I dont see the issue. A garden room is not massively heavy and its perfectly fine for it to sit on a 100mm concrete base over compacted type 1. This sounds like a standard concrete pad base to me.

i'm feeling like this is my only real option.

the side access is only 800mm (next door built a wooden shed -before we moved in, running the length of their house right upto the boundary), then gotta small step onto my decking, then a small step down then down a steep set of steps to the lower garden.
 
i'm feeling like this is my only real option.

the side access is only 800mm (next door built a wooden shed -before we moved in, running the length of their house right upto the boundary), then gotta small step onto my decking, then a small step down then down a steep set of steps to the lower garden.
Gravel grids might be a good option for you. Have a look at some youtube videos on the topic. Im going to use gravel grids for mine, albeit mine will be more of a shed and less of a garden room but there probably isn't too much of a difference in weight.
 
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Gravel grids might be a good option for you. Have a look at some youtube videos on the topic. Im going to use gravel grids for mine, albeit mine will be more of a shed and less of a garden room but there probably isn't too much of a difference in weight.

its just getting the gravel down there. my old neighbour done a gravel grid driveway was all right, though he didnt do it properly lol
 
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