ICC Commercial Building Inspector Practice Test

For a membrane structure of 1,800 square feet, the standby inflation system must operate independently for how long in the event of primary system failure?

1. 2 hours

2. 3 hours

3. 4 hours

4. 5 hours

The correct answer is: 4 hours

The requirement for a standby inflation system in a membrane structure is designed to ensure that the structure maintains its integrity and safety in the event of a primary system failure. For a membrane structure that is 1,800 square feet in size, the standard regulation mandates that the standby system must be capable of operating independently for a duration of 4 hours. This duration allows sufficient time for evacuation and safety measures to be implemented while maintaining the structural integrity of the membrane. The 4-hour requirement reflects considerations related to the potential for complications arising from a primary failure, including ensuring that the structure can withstand wind loads and other dynamic forces during that time. Options that list shorter durations would not provide adequate time for addressing system failures or ensuring safety, which is why they do not meet the established criteria for such structures. Therefore, the correct choice emphasizes the need for safety and preparedness in building design and maintenance protocols.