A load bearing wall transfers load all the way down to the building s foundation.
Truss roof load bearing wall.
Engineered roof truss systems may be designed to eliminate the need for load bearing walls or change where the bearing walls are located.
Bearer support.
If there is a gap between the top of wall and each truss then clearly the wall is not load bearing and you need only evaluate the contribution of the center wall to lateral stability of the house which is something an engineer can do for you.
Load bearing walls cross roof beams in a perpendicular direction.
Roof load width may be determined by reference to the diagrams on page 3.
A load bearing wall is any wall that holds up the weight of the structure above and the people furniture supported by that structure.
Supporting load bearing walls and lintels in lower storey load bearing walls.
It most likely is a load bearing wall even without the hvac unit taken in consideration.
Truss roofs are typically designed to use some interior walls as mid span support to save on costs associated with making the truss larger stronger.
They do this by means of top chords which are sloping members that extend from the peak of the roof to the top of the exterior walls at the eaves.
Bearer lw support conventional roof.
Using this technique you ll get a better idea of the location of the load bearing walls in your house.
Lw trussed roof.
Bearer a bearer b.
Roof trusses support a roof s weight by transferring the weight load downward and outward to the building s bearing walls.
Floor joists supporting parallel load bearing walls over large spans can deflect excessively even if the rule of thumb practice of doubling joists is followed.
The floors above roof structure people and furniture are the loads that the wall has to support.
To enable the roof truss to deflect under loads nails to the truss must be installed at the top of the slotted holes and not hammered home to allow a loose fit only.
The following tables give maximum spans for double joists for various roof loads.
If a wall is located on the ground floor go down to the basement to observe the ceiling beams.
Determination of roof load width determination of floor load width.
You will need an engineer involved in this since many contractors will tell you anything to get the job.