ICC Permit Technician Practice Exam

What is the minimum required size of a solid sawn beam supporting for framing for considerations as a type IV, Heavy Timber Construction?

1. 4" x 6"

2. 6" x 8"

3. 4" x 8"

4. 6" x 10"

The correct answer is: 6" x 10"

In Heavy Timber Construction, which is classified as Type IV, specific dimensional standards are established for solid sawn beams to ensure structural integrity and fire safety. The International Building Code (IBC) specifies that the minimum size for solid sawn beams in this type of construction must be at least 6 inches by 10 inches. This size requirement contributes to the durability and fire resistance necessary for heavy timber structures, allowing adequate load-bearing capacity and performance during a fire event. The dimensions reflect a balance between strength and thermal performance, as larger beam sizes provide increased mass that helps resist fire and maintain structural stability. Options that do not meet the minimum requirement, such as 4 inches by 6 inches, 6 inches by 8 inches, and 4 inches by 8 inches, fail to comply with the established standards for this building type and therefore would not be considered adequate for supporting the framing in a Type IV construction scenario.