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Questions and Answers
What is the primary advantage of breaching gypsum board during overhaul?
What is the primary advantage of breaching gypsum board during overhaul?
- It facilitates locating fire travel in light wood-frame construction. (correct)
- It aids in locating fire travel in all types of construction.
- It allows firefighters to directly access flames.
- It reveals hidden structural weaknesses in buildings.
Which type of gypsum board is used in certain occupancies as a building hardening measure?
Which type of gypsum board is used in certain occupancies as a building hardening measure?
- Acoustic gypsum board
- Paper-faced gypsum board
- Standard gypsum board
- Impact-resistant gypsum board (correct)
What distinguishes impact-resistant gypsum board from standard gypsum board?
What distinguishes impact-resistant gypsum board from standard gypsum board?
- It is cheaper to produce.
- It is designed to be more easily penetrated.
- It has a lighter weight.
- It has a fiberglass mesh for added strength. (correct)
What challenge do firefighters face when dealing with impact-resistant gypsum board during an overhaul?
What challenge do firefighters face when dealing with impact-resistant gypsum board during an overhaul?
In which types of buildings is impact-resistant gypsum board commonly found?
In which types of buildings is impact-resistant gypsum board commonly found?
What classification is given to wood-frame buildings with no interior finish?
What classification is given to wood-frame buildings with no interior finish?
Which material is NOT commonly used in modern construction for fire resistance?
Which material is NOT commonly used in modern construction for fire resistance?
Which of the following can allow the elimination of the 1-hour structural fire resistance requirement?
Which of the following can allow the elimination of the 1-hour structural fire resistance requirement?
How thick is the gypsum board typically used to add fire resistance?
How thick is the gypsum board typically used to add fire resistance?
Which of the following statements regarding roof members in wood-frame buildings is true?
Which of the following statements regarding roof members in wood-frame buildings is true?
Why is an interior finish often provided in wood-frame buildings?
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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