PSF is an acronym for which unit?

PSF is an acronym for which unit?

• A. Pounds per square foot
• B. Pounds per cubic foot
• C. Pounds per square yard
• D. Pounds per square inch

Answer: (A)

PSF measures weight distributed over an area, so it expresses how many pounds of force act on each square foot of a surface. This makes it a unit of surface load used in fields like construction and design to specify how much load a floor, roof, or roof snow must support per each square foot. It differs from pounds per cubic foot, which would describe density (mass per volume) rather than load per area. A unit of pounds per square yard would describe load per a larger area and isn’t the standard usage here, since the common area used in many codes is the square foot. Pounds per square inch is psi, which expresses pressure in much smaller areas. Therefore, the correct interpretation is pounds per square foot.

PSF measures weight distributed over an area, so it expresses how many pounds of force act on each square foot of a surface. This makes it a unit of surface load used in fields like construction and design to specify how much load a floor, roof, or roof snow must support per each square foot. It differs from pounds per cubic foot, which would describe density (mass per volume) rather than load per area. A unit of pounds per square yard would describe load per a larger area and isn’t the standard usage here, since the common area used in many codes is the square foot. Pounds per square inch is psi, which expresses pressure in much smaller areas. Therefore, the correct interpretation is pounds per square foot.