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When I often search for answers on non bike related stuff often Singletrack forums appear, so thought I would raise the question here as well as DIY forums, as you seem a helpful bunch.
Last year I built a shed and ran water and electrics in a trench, all the correct depths, taped and signed off on the electrics. Sorted.
Part of that was putting in some bedding sand, the trench was about 10m long, I have now dug a 28m trench to the forth coming Summer House, all ready to put pipes in, so my question is do I really need to put bedding in, sand or gravel, a long run like this would cost a lot, plus I have no access to rear garden for a large bulk load, so would need hand ball it all. I have heard the bedding is for support, but these are hdpe pipes, no greater than 50mm and armour cable, do they really need support in a domestic garden, they are fairly flexible unlike the rigid soil pipes. Or is the bedding required to remove any sharp objects which over time could cut the pipe. The soil is very clean, and whilst tedious I can filter the soil if I have to remove the odd bit of green house glass etc.
My gut says ust backfilling with out bedding should be fine. But trying to get a sanity check , as once it is done it done, and digging it was hard enough once.
Interesting the run to the shed, when I dug the end of this up for connection to the summer house, all the bedding sand I put is barley evident and mixed up anyway.
Anyone done similar?