Hazards: Trapped in a collapsing trench with no way out · Climbing spoil or shoring instead of a ladder · Untrained rescue entry by coworkers · Falls while entering or leaving the excavation
Why it matters
A trench gives you seconds. Egress is not a convenience — it is the difference between climbing out and being in it when the wall moves. CPWR's May 2024 Data Bulletin puts 1926.651(c), access and egress, at 16.8% of all trenching citations from 2011 to 2023, the third most-cited trenching standard.
MIFACE report 06MI174 (2006): a near-vertical L-shaped trench, 50 feet long and 9 feet deep, sandy soil under a clay cap, water lines going in at a new home. A 29-year-old laborer digging under the footing was killed when the corner came in. There was a ladder in the trench — MIOSHA's citation says it was not within 25 feet of him. Spoil and a 312 excavator sat at the edge, and the walls were never cut back.
Key points
- Four feet deep, there's a way out. 1926.651(c)(2): stairway, ladder, ramp or other safe means of egress in every trench 4 feet or more deep.
- 25 feet of lateral travel. Per person. Not 25 feet from the ladder to the middle of the crew — from every worker in the hole.
- Lateral travel is walking distance. Along the trench, around the box, past the pipe on the floor. Pace it off if you're arguing about it.
- Having a ladder is not the rule. A ladder at the wrong end of a 50-foot run is a citation and a coffin. It moves with the work.
- Set it like a ladder, not a prop. Secured, on firm footing, side rails 3 feet above the landing or tied off at the top with a grasping device — 1926.1053(b)(1).
- Inside the box. In a shielded trench the ladder goes inside the shield, so getting out never means stepping into unprotected ground.
- Ramps are engineered. (c)(1): employee ramps designed by a competent person; equipment ramps by a competent person qualified in structural design, members tied together, uniform thickness, cleats to stop slipping.
- Never climb the shoring or the spoil. Struts are not rungs, and the pile is the thing most likely to come in with you.
- Egress is also the rescue route. Nobody jumps in to dig a buried coworker out by hand. Call it in, keep everyone out, let the trained team shore it.
Do / Don't
Do
- Put the ladder in before the first person climbs down.
- Move it every time the crew advances.
- Know where the second way out is.
Don't
- Count on jumping up onto the bench.
- Leave the ladder at the far end "for now."
- Enter a collapsed trench to rescue anyone.
Quick site check
- Trench 4 feet or deeper — is there a ladder, stair or ramp in it?
- Pace it: is anyone more than 25 feet of travel from it?
- Ladder secure, rails 3 feet above grade, inside the box?
- Does everyone know today's emergency plan?
- Step off 25 feet along today's trench. From the far end, where is the ladder?
- Who moves the ladder as the pipe crew advances, and how often does that actually happen?
- We are in a trench box. Is the ladder inside the box or outside it?
- If a wall came in on someone, what do we do in the first 60 seconds — and what do we not do?