Ladder safety for inspectors working alone
Inspectors climb more ladders in a week than most people do in a year, usually alone, often onto surfaces they haven't seen before. Falls from ladders are one of the most common serious injuries in construction and field work. A few habits remove most of the risk.
Setup
- 4-to-1 angle: for every 4 feet of height to the support point, set the base 1 foot out from the wall.
- Extend 3 feet past the landing when stepping off onto a roof or platform, so you have something to hold while transitioning (the OSHA construction rule, 29 CFR 1926.1053).
- Firm, level footing. Use levelers on slopes; don't stack blocks under a leg.
- Look up before you raise it: keep well clear of overhead power lines, and use a non-conductive (fiberglass) ladder near electrical service.
- Check the feet, locks and rungs before each climb.
Duty ratings
Ladders are rated for the total weight of you, your clothing and everything you carry (ANSI A14):
| Type | Duty rating |
|---|---|
| III | 200 lb |
| II | 225 lb |
| I | 250 lb |
| IA | 300 lb |
| IAA | 375 lb |
With a tool bag, camera and meter, many inspectors are safer on a Type IA or IAA.
Climbing
- Three points of contact: two hands and a foot, or two feet and a hand.
- Face the ladder. Carry tools on a belt or haul them up, not in your hands.
- Keep your belt buckle between the rails; don't overreach.
When not to climb
Wet, icy, steep or fragile roofs (tile, slate, some metal), high wind, or a roof edge with no safe transition are all reasons to inspect from the ladder, the ground or a drone instead. Most standards of practice let you choose the method and state the limitation. Your report can say how the roof was inspected and why.
Working alone
- Tell someone where you are and when you expect to finish; check in after.
- Keep your phone on you, not in the truck.
- Don't climb when you're rushed or exhausted at the end of a long day.