What is the bond strength of SFRM if the test cap area is 0.0576 square feet and the force at failure is 15 pounds?

To determine the bond strength of Spray-Applied Fire Resistive Material (SFRM), the formula used is bond strength = force at failure / test cap area.

In this scenario, the force at failure is given as 15 pounds, and the test cap area is 0.0576 square feet. By calculating the bond strength, you take the force (15 pounds) and divide it by the area (0.0576 square feet):

Bond strength = 15 pounds / 0.0576 square feet = approximately 260.42 psf.

This value rounds to 260 psf. Therefore, the correct answer reflects the calculated bond strength based on the provided values.