10-20-2008, 09:39 AM
Hi Kimo wires, Sand below or above drainage pipe is a non-issue, what is important is that the piping or fittings should be not be embedded in concrete. Where it penetrates the slab it should be wrapped with foam insulation, I use "sill seal" from Home Depot, it comes in a blue roll.
After the slab has cured you could trim back the sill seal and fill with caulking to prevent intrusion of moisture or insects. EightFingers is correct about checking with the county, there could be some regional requirements.
UPC (uniform plumbing code) 718.1 ....sewer piping shall be laid on firm bed entire length...
And 312.2 ....No piping shall be directly embedded in concrete or masonary.
I'm sure your plumber knows what he's doing. I own a plumbing business in Portland, Oregon. I hope this helps.
Tom
After the slab has cured you could trim back the sill seal and fill with caulking to prevent intrusion of moisture or insects. EightFingers is correct about checking with the county, there could be some regional requirements.
UPC (uniform plumbing code) 718.1 ....sewer piping shall be laid on firm bed entire length...
And 312.2 ....No piping shall be directly embedded in concrete or masonary.
I'm sure your plumber knows what he's doing. I own a plumbing business in Portland, Oregon. I hope this helps.
Tom