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2024 International Building Code (IBC)
Chapter 25 Gypsum Panel Products And Plaster

Quiz: 2024 International Building Code (IBC) Chapter 25 Gypsum Panel Products And Plaster

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1. What materials are governed by the provisions of Chapter 25 of the IBC?

Gypsum panel products, lath, gypsum plaster, cement plaster, and reinforced gypsum concrete.
Gypsum board, exterior insulation and finish systems (EIFS), and stucco.
Acoustical panels, suspended ceilings, and gypsum concrete.
Only gypsum panel products and gypsum plaster.

2. When are other approved wall or ceiling coverings permitted to be installed?

Only after a special inspection by the building official.
In accordance with the recommendations of the manufacturer and the conditions of approval.
Only if they are non-combustible materials.
When they are used as a decorative finish over gypsum panel products.

3. Lathing, plastering, and gypsum panel product construction, when required for fire protection, must comply with which other chapter?

Chapter 6
Chapter 7
Chapter 10
Chapter 14

4. How shall lath and gypsum panel products be inspected?

Visually by the contractor prior to concealment.
In accordance with Section 110.3.6.
By the design professional at the completion of the project.
Only if the construction is part of a fire-resistance-rated assembly.

5. What is the minimum nominal thickness in the least dimension for wood supports for lath or gypsum panel products?

1 inch (25 mm)
1 1/2 inches (38 mm)
2 inches (51 mm)
2 1/2 inches (64 mm)

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