Residential Roof Load On Walls Below

In order to stay intact and in place a roof must be able to resist loads both permanent and temporary that are pushing.

Residential roof load on walls below.

However there are cases where a bearing wall is parallel to the joists. If the wall in. Chapter 3 design loads for residential buildings typical load combinations used for the design of table 3 1 components and systems1 component or system foundation wall gravity and soil lateral loads headers girders joists interior load bearing walls and columns footings gravity loads exterior load bearing walls and. So an 8 foot tall wall weighs 8 ft x 16 pounds ft 2 128 pounds per lineal foot.

Generally when the wall in question runs parallel to the floor joists above it is not a load bearing wall. Loads are contributed to the lower header by the roof upper walls and 2nd floor system. The architectural graphic standards lists the weight of an exterior 2 6 wall as 16 pounds per ft 2. If the wall in question is on the second floor look to see if there is a wall in the exact same place on the floor below.

Engineered roof truss systems may be designed to eliminate the need for load bearing walls or change where the bearing walls are located. Roofs are under a lot of pressure. But if the wall runs perpendicular at a 90 degree angle to the joists there is a good chance that it is load bearing.