OSHA 10-Hour Construction ReviewScaffoldsHard
A worker is using an adjustable suspension scaffold. What is the maximum vertical interval between scaffold ties or guying for standard light-duty scaffold frames?
- A26 feet
- B20 feet
- C30 feet
- D15 feet
Show answer & explanationAnswer & explanation
Correct answer: A. 26 feet
For standard light-duty scaffold frames, OSHA requires that the first tie-in be at 4 times the minimum base dimension, and subsequent ties must be at a maximum vertical interval of 26 feet. This ensures stability and prevents overturning.
Why the other options are wrong
- B. 20 feet is not the specified maximum vertical interval by OSHA for light-duty frames.
- C. 30 feet exceeds the maximum allowable vertical interval for light-duty scaffold frames.
- D. 15 feet is too frequent for vertical tie-in intervals for light-duty scaffolds.
Scaffold Tie-In Vertical Interval (Light-Duty)
The maximum vertical distance between points where a scaffold must be tied, braced, or guyed to a structure for stability, specifically for light-duty frames.
- First tie at 4x base dimension
- Subsequent ties max 26 feet vertical
- Ensures scaffold stability
Memory trick: Light-duty, 26 feet, for stability, can't be beat!