how do i know how much to mix for a foundation to build a hut on top of lengh
You just need to pack the base level. Use 3 x4's rough sawn treated timber every two or three feet and pack them level with brick, tiles, slates or concrete blobs.
Width * length * depth = volume. If you are approaching 1 cubic meter I suggest you look in yellow pages for these guys that mix and barrow for you.
I had 12 cubes (two lorries full) delivered yesterday, it was so so much cheeper than mixing it by hand, so so much a better job.
Rick
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