If primer is used on a column beneath SFRM, the maximum permissible column web depth is 16 inches. Which option is correct?

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Multiple Choice

If primer is used on a column beneath SFRM, the maximum permissible column web depth is 16 inches. Which option is correct?

When primer is used under SFRM on a column, there is a defined limit to how deep the column web can be while still guaranteeing proper coverage and adhesion of the fireproofing material. The standard sets this maximum web depth at 16 inches, so that the SFRM can be applied and inspected to achieve the required fire resistance with consistent thickness. Selecting 16 inches aligns with that limit, while smaller values would not reflect the maximum allowed, and larger values would exceed the permitted depth, risking incomplete coverage and performance issues.

When primer is used under SFRM on a column, there is a defined limit to how deep the column web can be while still guaranteeing proper coverage and adhesion of the fireproofing material. The standard sets this maximum web depth at 16 inches, so that the SFRM can be applied and inspected to achieve the required fire resistance with consistent thickness. Selecting 16 inches aligns with that limit, while smaller values would not reflect the maximum allowed, and larger values would exceed the permitted depth, risking incomplete coverage and performance issues.

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