Questions and Answers
What is the primary advantage of breaching gypsum board during overhaul?
Which type of gypsum board is used in certain occupancies as a building hardening measure?
What distinguishes impact-resistant gypsum board from standard gypsum board?
What challenge do firefighters face when dealing with impact-resistant gypsum board during an overhaul?
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In which types of buildings is impact-resistant gypsum board commonly found?
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What classification is given to wood-frame buildings with no interior finish?
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Which material is NOT commonly used in modern construction for fire resistance?
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Which of the following can allow the elimination of the 1-hour structural fire resistance requirement?
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How thick is the gypsum board typically used to add fire resistance?
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Which of the following statements regarding roof members in wood-frame buildings is true?
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Why is an interior finish often provided in wood-frame buildings?
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Study Notes
Interior Finish Materials
- Wood-frame buildings can remain unfininished; common in garages and sheds, classified as Type V-B (unprotected).
- Buildings classified as Type V-A (protected) have structural framing with 1-hour fire resistance.
- An automatic sprinkler system may allow omitting the 1-hour fire resistance requirement.
- Roof members above 20 feet (6 m) above floor level may also have exempt fire resistance requirements.
- Interior finishes enhance aesthetics and can improve thermal insulation.
- Common materials for finishing include ordinary plywood and OSB (Oriented Strand Board).
- Gypsum board and plaster are used for specified fire resistance requirements.
- 5/8 inch (15.5 mm) gypsum board is commonly utilized for fire resistance when attached to studs and joists.
- Underwriters Laboratories Fire Resistance Directory details methods for using gypsum board to achieve fire resistance.
- Plaster is less favored in modern construction due to its labor-intensive application.
Building Hardening in Overhauls
- Firefighters typically breach gypsum board during overhaul, aiding in locating fire paths in light wood-frame structures.
- Some facilities, like schools and correctional institutions, may utilize impact-resistant gypsum board with fiberglass mesh for enhanced building hardening.
- Impact-resistant gypsum board appears similar to standard gypsum board but is more difficult to penetrate with hand tools.
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Description
This quiz explores the different classifications of wood-frame buildings based on their interior finish materials and fire protection ratings. Understand the distinctions between Type V-A and Type V-B constructions, and learn how these classifications impact building codes and safety standards.
