How much slate will I need to order? (have)
Well, the depth is up to you, but I think 2" would be the norm. This equals
50mm, or 0.05 metre, which multiplied by 133 = 6.65 m3. you would have to
check with your supplier for the ratio of volume to weight, but about 1
tonne per cu m would not be too far out. If you wanted to go a bit less
than 50mm depth, about 5 tonne should do you.
HTH
Steve
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