Michigan Residential Builders License Practice Test

How many positive gripping mechanisms must pump jack brackets have to prevent failure or slippage?

1. 1

2. 2

3. 3

4. 4

The correct answer is: 2

Pump jack brackets are essential components in construction that support scaffolding and other structures by allowing workers to elevate materials and tools safely. In order to ensure maximum safety and reliability, it's crucial that these brackets incorporate multiple positive gripping mechanisms. Having two positive gripping mechanisms is the standard requirement. This is important because it provides a redundancy that enhances safety. If one mechanism were to fail for any reason—such as wear and tear, improper installation, or material failure—the second mechanism would still securely hold the load, reducing the risk of accidents like falls or structural collapses. The regulations are designed to protect construction workers and ensure that scaffolding remains stable under various loading conditions. Therefore, the requirement for two mechanisms reflects industry best practices aimed at providing a safer working environment.