Flat Roof Load Bearing Wall

Joists are placed on edge spaced at 400 600mm centres supported by external and internal load bearing walls.

Flat roof load bearing wall.

Load bearing or primary structure usually constructed in timber in a residential construction. Use this clue to narrow down possible load. A gable roof is a roof that slopes downward from a central ridge to a building s exterior walls on two sides. If a wall is located on the ground floor go down to the basement to observe the ceiling beams.

Due to the triangular shape of all but flat roofs the rafters or joists will run perpendicular to the roof ridge as well as to load bearing walls. 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. On the other two sides the roof terminates in a flat triangular gable. These walls transfer the vertical load of the house straight to the foundation or some other element that undergirds it.

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. Using this technique you ll get a better idea of the location of the load bearing walls in your house. A wall that is set directly over one of those beams is probably not a load. Ways to identify a load bearing.

The construction of the flat roof is similar to that of the timber upper floor. Calculating the load on a flat roof is a challenging task for the layperson that involves knowledge of building materials their weights and local building codes. By contrast a non load bearing wall sometimes called a partition wall is responsible only for holding up itself. Load bearing walls cross roof beams in a perpendicular direction.

The standard guide in the u s the asce 7 05 lists weights and stresses for all building materials expressed in pounds per square foot. Roof and wall sheathing gravity and wind loads floor diaphragms and shear walls. In this roof design the exterior walls on which the roof s sloping rafters rest are load bearing walls.