Sumner County inspectors review slab and footing standards, urge Ufer grounding on new builds

Sumner County inspectors walked board members through common problems with monolithic slabs, footings and grounding on April 16, urging clearer permit requirements and at least one dedicated inspection for slab grounding on new residential builds.

The discussion centered on construction details that inspectors said are still frequently installed incorrectly. "It's a good, useful guide to look at when you're looking at a slab, footing for a foundation," said Terry, a staff member, describing a 2015-era checklist the office uses when inspecting slabs and footings. He ran through minimum splice and embedment requirements, vapor-barrier and gravel specifications, anchor-bolt spacing, and insulation around slab edges.

Why it matters: inspectors said improper footings or poor grounding can lead to structural failures and safety hazards. The panel debated how to ensure a durable electrical ground for slabs — the so-called Ufer ground — is provided and inspected before concrete is poured.

Terry told the board that the department follows guidance adopted with the 2015 code cycle and that several items are now required that were not in…