DJL
New Member
Hello all,
I am in the process of moving my basement bathroom stubouts. I've got the concrete busted up and trenches dug, but I'm trying to figure out the best technique for preparing the area for the PVC pipe. My inspector said to use beds of sand, adding 1/4" slope to the sand then lay the pipe on top of that. Some books I've been reading mostly gloss over this and suggest to use wooden stakes and vinyl strapping to support the pipes and establish the slope. The books then completely ignore how to prepare the soil underneath the pipes.
I'm considering going the sand route, but I'm not sure what to do. Basically, I'm considering doing these steps:
1) apply the sand to the pipe trench, wet it down, tamp it, establish 1/4" slope for toilet/shower/lav back to the main drain line.
2) Glue the pipe, test it, have it inspected.
3) Add the soil I excavated back a couple inches at a time, compacting each layer of added soil, burying the piping completely
4) Add two or three inches of gravel above that, even to the bottom of the slab, wet the gravel, tamp it
5) Patch the concrete slab.
Is this at all right? Any tips or suggested changes that you would make to this process? By the way, the soil is all clay. Thanks.
I am in the process of moving my basement bathroom stubouts. I've got the concrete busted up and trenches dug, but I'm trying to figure out the best technique for preparing the area for the PVC pipe. My inspector said to use beds of sand, adding 1/4" slope to the sand then lay the pipe on top of that. Some books I've been reading mostly gloss over this and suggest to use wooden stakes and vinyl strapping to support the pipes and establish the slope. The books then completely ignore how to prepare the soil underneath the pipes.
I'm considering going the sand route, but I'm not sure what to do. Basically, I'm considering doing these steps:
1) apply the sand to the pipe trench, wet it down, tamp it, establish 1/4" slope for toilet/shower/lav back to the main drain line.
2) Glue the pipe, test it, have it inspected.
3) Add the soil I excavated back a couple inches at a time, compacting each layer of added soil, burying the piping completely
4) Add two or three inches of gravel above that, even to the bottom of the slab, wet the gravel, tamp it
5) Patch the concrete slab.
Is this at all right? Any tips or suggested changes that you would make to this process? By the way, the soil is all clay. Thanks.