I can tell from reading specs how these two pipe types differ. My question is about usage.
The pic shows the plan view of the underslab waste and soil drains in a house being built. The line exits the house at the bottom of the drawing, and heads for the septic tank.
The main spine of the underslab spider is 4" at the suggestion of our plumber. Because the branch fittings are SCH40 PVC, the majority of the line under the slab needs to be SCH40 PVC.
My question is, where can we transition from SCH40 to SDR35? We fall under the IPC, and the limited code refs I have do not clarify this for me.
The pic shows the plan view of the underslab waste and soil drains in a house being built. The line exits the house at the bottom of the drawing, and heads for the septic tank.
The main spine of the underslab spider is 4" at the suggestion of our plumber. Because the branch fittings are SCH40 PVC, the majority of the line under the slab needs to be SCH40 PVC.
My question is, where can we transition from SCH40 to SDR35? We fall under the IPC, and the limited code refs I have do not clarify this for me.