Water, Sewer & Electrical Trenches in Knoxville, TN

Water, sewer and electrical trenches carry the lines that connect a house to the world: the water service from the meter, the sewer lateral to the main or septic tank, gas service, and underground power or data conduit to a garage, shop, well pump or gate. We dig the trench to the depth the code and the utility require, bed the pipe or conduit, backfill in layers and restore the surface.

Calling 811 first

Tennessee requires anyone digging to notify Tennessee 811 before excavation so buried utilities can be marked. That applies to homeowners as well as contractors. We place the request for every trench and do not dig until the marks are in. Inside the marked area, we expose lines carefully rather than running a bucket through them.

Sewer laterals in older neighborhoods

In Knoxville's older neighborhoods, such as Fourth and Gill, Parkridge, Fort Sanders and the 1920s and 1930s suburbs, many sewer laterals are old clay or cast iron. Roots, cracked joints and sags are common. Replacing a lateral means a trench from the house to the connection, at the depth and grade the line needs to flow. We work with your plumber, who makes the connections and the inspection, while we handle the digging, bedding and backfill.

Rock and chert in a trench line

Trenching in cherty or rocky ground is slower than in clean clay. Fullerton soils, common on the region's ridges, carry 10 to 45 percent chert gravel and cobbles in their layers. Sharp chert should not sit against plastic pipe, so we bed lines in sand or fine stone. Where a limestone ledge crosses the trench, we hammer it or route around it, as quoted.

Trench safety

Trenches deeper than five feet need protection such as shoring, a trench box or sloped sides under federal safety rules, and we never put anyone in an unprotected deep trench. Most residential service lines are shallower than that, but sewer laterals and septic lines can get deep at the street end.

Restoring the yard

We keep topsoil separate from subsoil, backfill in compacted lifts so the trench does not sink later, and put the topsoil back on top. Seed and straw or sod are included if quoted. Where a trench crosses a driveway or walk, we coordinate saw cutting and patching.