TaosBuilder
New Member
On a very steep mountainous lot where heavy-walled SDR 26 gasketed sewer line is required outside of house by local town, we continued SDR 26 line under house footing and under future slab before sweeping up to connect to Schedule 40 drain line rough-in under rest of slab. Bedding is gravel.
State inspector has raised concerns about SDR 26, but based on rated burial depth (many 10s of feet) and well established integrity of gasketed fittings, intuitively SDR 26 should be okay. I believe some localities across country approve SDR 26 for sewer lines under buildings, but inspector claims under UPC 2006 must be Schedule 40 under slab.
Understand SDR 35 is not okay as it has thinner wall, but with thick wall of SDR 26 and associated stiffness, seems like SDR 26 with gasketed fittings should be bullet proof and arguably as good or better than foam core Schedule 40 drain lines under slab which are in common use locally.
Any experience / suggestions? Thanks!
State inspector has raised concerns about SDR 26, but based on rated burial depth (many 10s of feet) and well established integrity of gasketed fittings, intuitively SDR 26 should be okay. I believe some localities across country approve SDR 26 for sewer lines under buildings, but inspector claims under UPC 2006 must be Schedule 40 under slab.
Understand SDR 35 is not okay as it has thinner wall, but with thick wall of SDR 26 and associated stiffness, seems like SDR 26 with gasketed fittings should be bullet proof and arguably as good or better than foam core Schedule 40 drain lines under slab which are in common use locally.
Any experience / suggestions? Thanks!