Almost finished an extension project and one of my last projects before it can be signed off is to lay some pernament drainage to replace the temporary buckets which I keep having to empty.
Been trying to make head or tail of part H and have looked at some online resources but still have some quiries about how to do some aspects.
I will be installing two gullies which will both take rainwater and one of which will also take waste from a basin. These will link to an existing combined sewer. I did consider a soakaway for the runoff but the building inspector recommended I put it into the sewer as the soil is unsutible for a soakaway.
I am considering using push fit PVC pipe and fittings.
Is there a minimum depth of pipe in a garden? I notice that part H mentions fields or roads but not gardens. My proposed run would be totally covered by a block paved or flagstone footpath.
for bedding is 10mm gravel sutible, laid to a depth of 100mm under the pipe and 100mm each side (300mm trench total width).
Also, is it ok to backfill the trench with the heavy clay soil I dug out of the trench? From digging the foundations of the extension I noticed the clay appeard free from stones.
Please see a rough plan of my proposed layout:
Another query is where my new drain will pass over the public sewer, do I need to do anything special here and is there a minimum vertical seperation needed here?
I am intending on using rodable bottle gullies, am I correct thinking no other rodding eyes etc are required?
The public sewer and the existing private pipe are made from clay c1934. My intention is to remove a section of the clay pipe and insert a PVC tee with a clay to pvc adaptor at each end.
Been trying to make head or tail of part H and have looked at some online resources but still have some quiries about how to do some aspects.
I will be installing two gullies which will both take rainwater and one of which will also take waste from a basin. These will link to an existing combined sewer. I did consider a soakaway for the runoff but the building inspector recommended I put it into the sewer as the soil is unsutible for a soakaway.
I am considering using push fit PVC pipe and fittings.
Is there a minimum depth of pipe in a garden? I notice that part H mentions fields or roads but not gardens. My proposed run would be totally covered by a block paved or flagstone footpath.
for bedding is 10mm gravel sutible, laid to a depth of 100mm under the pipe and 100mm each side (300mm trench total width).
Also, is it ok to backfill the trench with the heavy clay soil I dug out of the trench? From digging the foundations of the extension I noticed the clay appeard free from stones.
Please see a rough plan of my proposed layout:
Another query is where my new drain will pass over the public sewer, do I need to do anything special here and is there a minimum vertical seperation needed here?
I am intending on using rodable bottle gullies, am I correct thinking no other rodding eyes etc are required?
The public sewer and the existing private pipe are made from clay c1934. My intention is to remove a section of the clay pipe and insert a PVC tee with a clay to pvc adaptor at each end.