High rise buildings that are 410 feet tall must have an SFRM bond strength of at least how many psf?

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Multiple Choice

High rise buildings that are 410 feet tall must have an SFRM bond strength of at least how many psf?

The key idea here is that the adhesion of spray-applied fireproofing (SFRM) is treated as size-dependent: taller buildings face greater bending, wind, and vibration forces, so the fireproofing must adhere more strongly to stay in place over time. The height-based requirement is captured in a table that sets a minimum bond strength for different height ranges. For a building around 410 feet tall, the table specifies a minimum SFRM bond strength of 430 psf. So 430 psf is the lowest strength that satisfies the standard for this height. A lower value, like 420 psf, wouldn’t meet the requirement for this height, while higher values such as 440 or 450 psf are above the minimum for this bracket and thus are not the required specification for 410 feet.

The key idea here is that the adhesion of spray-applied fireproofing (SFRM) is treated as size-dependent: taller buildings face greater bending, wind, and vibration forces, so the fireproofing must adhere more strongly to stay in place over time. The height-based requirement is captured in a table that sets a minimum bond strength for different height ranges. For a building around 410 feet tall, the table specifies a minimum SFRM bond strength of 430 psf. So 430 psf is the lowest strength that satisfies the standard for this height.

A lower value, like 420 psf, wouldn’t meet the requirement for this height, while higher values such as 440 or 450 psf are above the minimum for this bracket and thus are not the required specification for 410 feet.

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