Quiz: 2024 International Building Code (IBC) Chapter 31 Special Construction

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1. Which of the following membrane structures are NOT required to meet all provisions of Section 3102, only specific sections?

Air-supported structures used for human occupancy for 100 days.
Membrane-covered frame structures covering a water treatment plant.
Tensile membrane structures erected on a building for 30 days.
Air-inflated structures used for public assembly for 200 days.

2. A heavy timber frame-supported structure covered by an approved membrane is being constructed. How should this membrane structure be classified under the IBC?

Type IIB construction
Type IV-HT construction
Type V construction
Type III-A construction

3. What is the exception for plastic material thickness in greenhouses where public occupancy is not authorized regarding fire propagation performance criteria?

Plastic less than 30 feet (9144 mm) above any floor.
Plastic less than 20 mil (0.5 mm) in thickness.
Plastic with a flame spread index not greater than 25.
Plastic used for aquaculture pond covers regardless of thickness.

4. A noncombustible membrane is used as a roof on a Type I building. What is the minimum height the membrane must be above any floor, balcony, or gallery?

Not less than 10 feet (3048 mm).
Not less than 15 feet (4572 mm).
Not less than 20 feet (6096 mm).
Not less than 25 feet (7620 mm).

5. For membrane-covered frame structures, how is the membrane considered regarding lateral restraint in the calculation of frame member capacities?

It provides primary lateral restraint.
It provides secondary lateral restraint, if approved.
It shall not be considered to provide lateral restraint.
It can provide lateral restraint if tested in accordance with ASCE 55.

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