OSHA 10-Hour Construction ReviewScaffoldsHard
An employer is using a proprietary scaffold system that does not strictly conform to all of OSHA's prescriptive scaffold requirements. Under what condition can this system still be used legally?
- AIf the scaffold is only used by experienced workers.
- BIf all workers using the scaffold sign a waiver of liability.
- CIf a registered professional engineer designs and approves the system.
- DIf the scaffold is used for less than one day.
Show answer & explanationAnswer & explanation
Correct answer: C. If a registered professional engineer designs and approves the system.
OSHA allows for performance-based alternatives to its prescriptive scaffold requirements. If a scaffold system does not strictly meet all prescriptive rules, it can still be used if it is designed by a registered professional engineer and built and used in accordance with that design, demonstrating equivalent or greater safety.
Why the other options are wrong
- A. Worker experience is important, but it does not substitute for engineering design and approval for non-prescriptive scaffold systems.
- B. Waivers of liability do not negate an employer's responsibility to provide a safe workplace or comply with OSHA standards.
- D. The duration of use does not exempt a scaffold from safety standards.
Performance-Based Scaffold Design
OSHA allows for alternative scaffold designs if a registered professional engineer certifies their equivalent safety and compliance.
- Applies when prescriptive requirements are not strictly met.
- Requires design by a Registered Professional Engineer (RPE).
- Must demonstrate equivalent or greater safety.
- Documentation of the design and approval must be available.
Memory trick: Engineer's Stamp, Safety's Champ.