Florida Building Code Practice Exam

Crawl space ventilation openings must be covered with corrosion-resistant wire mesh with a least dimension not exceeding what size?

1. 1/8"

2. 1/4"

3. 3/8"

4. 1/2"

The correct answer is: 1/8"

Crawl space ventilation openings play a vital role in maintaining a proper airflow, which is essential in preventing moisture accumulation and mold growth within the structure. According to the Florida Building Code, these ventilation openings must be protected to ensure they allow for adequate ventilation while preventing pests and debris from entering. The requirement for the wire mesh covering these openings specifies that it must have a least dimension not exceeding 1/8 inch. This size effectively balances the need for proper ventilation while still preventing small animals and insects from entering the crawl space. A mesh with larger openings, such as 1/4 inch or greater, would allow pests to get through, potentially leading to damages or health hazards. Therefore, utilizing a mesh with dimensions not exceeding 1/8 inch aligns with building safety and maintenance standards.