Massachusetts Unrestricted Construction Supervisor License Practice Test

What is the dead load requirement in a bedroom for 2x8 floor joists?

1. 5 psf

2. 10 psf

3. 15 psf

4. 20 psf

The correct answer is: 10 psf

The dead load requirement for a bedroom that uses 2x8 floor joists is based on the weight of the materials that will be permanently supported by the structure, such as the joists themselves, flooring, and any other fixed items. In residential construction, a common practice is to use a dead load of 10 pounds per square foot (psf) for floor systems in living areas like bedrooms. This value accounts for the weight of the floor framing and typical finishes, allowing for a sufficient safety margin. When determining the load requirements, building codes provide guidelines that ensure safety and structural integrity. The 10 psf standard reflects both the typical materials used in flooring and the expected maximum weight of furnishings in a bedroom, which is critical for ensuring that the floor can support both live and dead loads without risk of failure. Understanding the rationale behind dead load calculations is essential for effective structural design and compliance with safety standards in construction. The selection of 10 psf aligns with industry practices and is widely accepted in residential design specifications.