Demolition Safety Toolbox Talk

A free, ready-to-run toolbox talk for construction crews. Read it aloud at your morning huddle; it takes about ten minutes. Leer en español →

OSHA standard: 29 CFR 1926 Subpart T (1926.850)

At a glance

• Demo runs on a plan: engineering survey first, then top-down, never ahead of sequence
• Utilities located, cut, and capped BEFORE the first swing
• A structure being demolished gets weaker every hour — respect exclusion zones
• Older buildings hide asbestos and lead; the survey covers that too

Introduction

Demolition is construction in reverse, and it's less forgiving: every cut removes strength from a structure that somebody is standing on or next to, and the building fights back with hidden utilities, unexpected loads, and hazardous materials sealed in decades ago. Subpart T requires an engineering survey before demo starts for a reason — improvised demolition is how walls land on crews. Today's talk covers the sequence, the zones, and the hidden hazards.

Before the First Swing

• An engineering survey by a competent person determines the structure's condition, collapse potential, and the demo sequence — the plan is not optional and not verbal
• ALL utilities located, shut off, cut, and capped: gas, electric, water, sewer, communications — verified, not assumed from a phone call
• Hazardous materials survey: asbestos, lead, chemicals in place — abatement happens BEFORE structural demo, by licensed crews
• Fire protection, exits, and emergency plans stay functional as long as anyone works inside

The Sequence Rules

• Demolition proceeds top-down, story by story, unless the engineered plan says otherwise
• Never remove lower or supporting members ahead of the sequence — the floor you're weakening is the one above your head
• Walls left standing without lateral support get braced or dropped deliberately — never left to the wind, especially monsoon wind
• Material drops through holes get chutes or barricaded drop zones; debris doesn't rain freely

Working Around It

• Exclusion zones sized to the structure: a wall falls its full height plus debris scatter — stay outside that arc, machine operators included
• Only personnel essential to the demo inside the zone, period; spectating is a struck-by event waiting
• Dust control on every mechanical demo: water spray, and silica rules apply to concrete and masonry breaking
• Daily re-inspection: yesterday's demo changed today's structure — the competent person clears continued work each shift and after weather

Key takeaways

• No survey, no plan, no demo
• Utilities cut and capped, verified first
• Abatement before structural work
• Top-down, never ahead of sequence
• Exclusion zone = wall height plus scatter
• Re-inspect daily; the structure changes daily

Questions for your crew

1. No engineering survey, no plan, no demolition — the survey finds what the building is hiding.
2. Utilities located, cut, capped, and verified BEFORE the first swing.
3. Asbestos and lead abatement happens before structural work in older buildings.
4. Top-down, never ahead of the sequence — a structure being demolished gets weaker every hour.
5. Exclusion zones sized to wall height plus scatter, and respected.
6. Re-inspect daily — yesterday's structure isn't today's.

Run this talk with crew sign-offs

This talk is part of the Safirst ONE toolbox talk library, in English and Spanish. Your foreman picks the talk in the app, the crew signs from their own phones by scanning a QR code, and the signed record files itself in your Docs Locker. Talk to Safirst to get it for your crews.

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