Question

A portable, hook-on, or attachable ladder can be used on a supported scaffold that is more than 35' tall. At ____________ vertical intervals, you need to incorporate a rest platform.

Option 1. 15-foot
Option 2. 20-foot
Option 3. 25-foot
Option 4. 30-foot

Answer 1

In the context of scaffold safety, a rest platform should be incorporated at every 20-foot vertical interval when using ladders on a supported scaffold over 35 feet tall. This ensures worker safety and meets regulatory standards.

Step-by-step explanation:

A portable, hook-on, or attachable ladder can be used on a supported scaffold that is more than 35' tall. At 20-foot vertical intervals, you need to incorporate a rest platform. This safety measure reduces the risk of falls and fatigue, providing a secure area for workers to rest during their ascent or descent on scaffolds of significant height.

The questions provided are related to the application of statics in physics and engineering, specifically focusing on calculating forces on ladders and scaffolds, which is a part of the safety guidelines in construction and engineering practices. These examples illustrate the principles of static equilibrium where all the forces and moments sum to zero.