ICC Commercial Building Inspector Practice Test

In Type IV construction, which statement regarding heavy timber sizes is true?

1. Only specific sizes are allowed

2. No restrictions apply

3. All of the answers apply

4. Sizes must be less than standard dimensions

The correct answer is: All of the answers apply

In Type IV construction, which is characterized by heavy timber framing, it is accurate to state that there are specific requirements regarding the sizes of heavy timber. These rules are put in place to ensure the structural integrity and fire resistance of the building. The code allows for a variety of sizes but also establishes minimum dimensions that must be met for materials to qualify as heavy timber. The notion that "only specific sizes are allowed" and "sizes must be less than standard dimensions" reflect different aspects of the code. While there are indeed required sizes that classify timber as heavy timber framing, there are also provisions for certain structural scenarios where modifications to standard sizes may be permitted. Therefore, while no restrictions in a general sense would not apply, the statement acknowledges that there are established criteria. Thus, stating that "all of the answers apply" encapsulates the complexity of the regulations surrounding heavy timber sizes in Type IV construction, making it the most comprehensive and accurate choice.