Ladder Safety in Construction
Proper ladder placement greatly reduces accidents on construction sites. The commonly used 4:1 rule (one unit out for every four units up) gives an angle of roughly 75.5° from the ground — a balance between tipping risk and sliding risk.
Practical Construction Tips
- Extend above landing: Ladders used to access roofs or platforms should extend at least 0.9 m (3 ft) above the landing.
- Solid footing: Ensure the ladder base is placed on level, compacted ground or use ladder levellers on uneven surfaces.
- Secure top: Tie off or secure the top of the ladder when working at height for prolonged durations or when tools are used.
- Inspect regularly: Check rungs, locks, and stiles before use; remove damaged ladders from service.
- Use the right ladder: Choose an appropriate ladder length so you do not stand on the top rungs and the ladder remains stable.
When to use other equipment
If the required ladder angle would be too steep or too shallow for the given workspace or if the ladder is used for long periods, consider using scaffolding, aerial lifts, or temporary platforms which provide safer working platforms for construction tasks.