Foundation wall gravity and soil lateral loads headers girders joists interior load bearing walls and columns footings gravity loads exterior load bearing walls and columns gravity and transverse lateral load 3 roof rafters trusses and beams.
Roof load bearing wall.
The roof trusses are too long to span the whole house so the load bearing wall runs down the center of the house to support the trusses at the perpendicular intersection in the middle.
Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size.
Engineered roof truss systems may be designed to eliminate the need for load bearing walls or change where the bearing walls are located.
Look for an internal wall that s near the relative center of your house.
The distance in this case is 12 ft 2 ft 14 ft.
Load bearing walls cross roof beams in a perpendicular direction.
Using this technique you ll get a better idea of the location of the load bearing walls in your house.
Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall.
For example a gable end truss may be designed with support members that transmit the roof weight load outward to the side walls allowing the end wall directly below it to have breaks or openings in it that would otherwise be impossible.
The exterior wall and the headers within will carry all loads from the mid point of the house between the supporting walls to the outside of the house including the roof overhang.
Often these load bearing walls are roughly near the center of the house because the center of the house is the farthest point from any of the exterior walls.
Even without a second story the roof weighs a lot and load bearing walls bear most of the.
A wall that is set directly over one of those beams is probably not a load.
By contrast a non load bearing wall sometimes called a partition wall is responsible only for holding up itself.
If a wall is located on the ground floor go down to the basement to observe the ceiling beams.
Roof and wall sheathing gravity and wind loads floor diaphragms and shear walls.
