Simple but perplexing question coming up.
I am having a new oil tank installed to replace the old steel rusted job. The new tank will be sited in a more accessible place, and thus requires a new underground feed pipe. The contractors have told me to dig the trench for the pipe, which I have nearly completed.
When the pipe is laid (presumably in plastic coated copper) I will be laying it on, and covering it with, 40mm sand to protect it before filling the trench with the excavated soil.
Does the sand have to be:
a) Ordinary building sand (seems rather acidic to me)
b) Dry sharp sand (too abrasive?)
c) Some other spec of sand (is there one?)
or
d) Doesn't matter either way.
Rgds.
I am having a new oil tank installed to replace the old steel rusted job. The new tank will be sited in a more accessible place, and thus requires a new underground feed pipe. The contractors have told me to dig the trench for the pipe, which I have nearly completed.
When the pipe is laid (presumably in plastic coated copper) I will be laying it on, and covering it with, 40mm sand to protect it before filling the trench with the excavated soil.
Does the sand have to be:
a) Ordinary building sand (seems rather acidic to me)
b) Dry sharp sand (too abrasive?)
c) Some other spec of sand (is there one?)
or
d) Doesn't matter either way.
Rgds.