i,ve started digging the footings out for a dwarf wall and come the public sewer pipe which i intended to bridge over, the trouble is it is covered with concrete i assume from when it was first laid which makes it about a foot wide, do i still bridge it or can i concrete over it? or is there another option.
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footings
- Thread starter bagger
- Start date
Bridge it.
The concrete is there to offer some protection and prevent movement of the pipe.
Buy a 100wide x 140 deep x 1.2m long prestressed concrete lintel and cut it in half. By rights you should make sure it is suitable for use in the ground.
Actually, for a dwarf wall a smaller lintel may work. Go online and download a Naylor lintels brochure. This will tell you the capacity of the lintels. All you then need to do is to work out the loads to the lintels. Shouldn't be much if it's a dwarf wall for a conservatory...just the wall, and a bit of window and roof load.
Craig.
The concrete is there to offer some protection and prevent movement of the pipe.
Buy a 100wide x 140 deep x 1.2m long prestressed concrete lintel and cut it in half. By rights you should make sure it is suitable for use in the ground.
Actually, for a dwarf wall a smaller lintel may work. Go online and download a Naylor lintels brochure. This will tell you the capacity of the lintels. All you then need to do is to work out the loads to the lintels. Shouldn't be much if it's a dwarf wall for a conservatory...just the wall, and a bit of window and roof load.
Craig.
Assuming the footing is straddling the drain pipe.. and the pipe not in a corner or running at a shallow angle..
Make sure your new footings go below the existing drain or to the same bottom level as the bottom of the pipe, so no new loading from your "extension" are applied to the drain..
Hi just had that problem ,building control made us bridge the sewer pipe with 2 lintels 6x4 they were 1.2m long and we had to chase in to the house foundation so the lintel rested 10inches iether side but this was for a double storey extention and then refill hole with pea gravel
True.
I saw Aerofil packing specified once above a pipe and below the strip footing.
What are your thoughts on this Static?
My thoughts would be "Below the footing?! really??"..
Aerofil is a flexible material, not what you want under a footing..
Like NHBC says sleeving is an option:
View media item 22047So long as the material used to surround the pipe is compressible..
No, you quoted me correctly. Above the pipe and below the strip footing.
I thought it didn't look good but wasn't going to argue with a more senior engineer
Next time I will
I thought it didn't look good but wasn't going to argue with a more senior engineer
Next time I will
Do mate.. even senior engineers have senior moments
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