Site utilities rough-in inspection checklist

Trench protection cleared by the competent person before the walk

Shoring, trench box, sloping or benching in place and checked by the competent person that day; the walk party works from the surface and never enters an unprotected trench.

Line and structure layout checked against the current utility plan

Offset stakes or machine-control layout for pipe runs and structures match the plan revision in the trailer, with cut sheets giving the crew each invert.

Existing main or stub at the tie-in exposed and its invert shot

Size, material and invert of the existing pipe or structure confirmed from the surface before new pipe is laid from it, any mismatch with the plan sent to the engineer.

Pipe material and class match the design

Pipe type, size and pressure class or wall confirmed against the utility plan for storm, sanitary and water, markings read on the pipe itself.

Bedding material and depth correct

Specified bedding placed and shaped under and around the pipe, no rock bearing on the barrel, haunches supported.

Gravity pipe laid up-grade from the outlet with bells upstream

Storm and sanitary runs started at the downstream structure, each bell facing up-grade so the next spigot is pushed home into it, observed from the surface.

Invert elevations and slope on gravity lines verified

Inverts shot at structures and along the run against the profile, continuous fall with no belly or backfall on storm and sanitary.

Joints made up correctly

Gaskets seated and pipe home to the mark, joints clean and gapped per the maker's instruction, no cocked or pushed-past joints.

Open pipe ends plugged at the end of every shift

Watertight plug or cap on the last pipe laid and on open stubs, observed from the surface, so trench water, soil and animals can't get into the line overnight.

Thrust blocking or restraint at fittings on pressure mains

Bends, tees and valves on the water main blocked against undisturbed soil or mechanically restrained per the detail before backfill.

Separation between water and sewer maintained

Horizontal and vertical separation between the water main and sewer lines checked against the requirement at parallels and crossings.

Valves set plumb with boxes centered over the operating nut

Water main valves set vertical, box sections aligned over the nut and supported so the box doesn't bear on the valve body or shift in backfill, observed from the surface.

Structure bases set level on compacted stone at the design elevation

Each manhole and inlet base bedded level on the specified stone, its elevation checked against the profile before pipe is connected, observed from the surface.

Building service stubs at the location and depth the plans show

Water, sewer and storm stubs ending where the building plumbing picks them up, at the shown depth, capped and located for the as-built, observed from the surface.

Duct bank conduits counted and spaced before encasement or backfill

Conduit count, size and spacers match the dry-utility plan, ends plugged, with sweeps, cover and clearance from water and sewer as the serving utility requires, observed from the surface.