What is the average dead load not to exceed for combined roof and ceiling, exterior walls, floors, and partitions in light-frame construction?

In light-frame construction, the average dead load for combined roof and ceiling, exterior walls, floors, and partitions is typically established based on industry standards to ensure structural integrity and safety. The accepted value for the average dead load not to exceed is 15 pounds per square foot (psf). This figure accounts for the materials commonly used in light-frame buildings, which include wood, drywall, insulation, and other finishes.

Using an average dead load of 15 psf allows architects and engineers to effectively design structures that can support all permanent loads without risk of failure. This standard provides a guideline that aligns with building codes and ensures that the design accommodates for the various components of a building's structure.

Other values listed, whether higher or lower, do not reflect the typical standards set by building codes for light-frame construction, as they either exceed safety margins or underestimate the materials used in such structures. Thus, 15 psf is well-established in the industry as a balanced figure for planning and assessing structural loads in this type of construction.