Hip Roof Load Bearing

We want to open the small kitchen into the old unused dining room in our single story hip roof house.

Hip roof load bearing. Anything 5 and above we always at least double cripple. These walls directly support roof trusses or rafters. Interior load bearing walls may also support the roof as they do in gable roof designs. However a house with a hip roof structure suggests that all the exterior walls are bearing walls.

Stair well openings are also typically load bearing points. Any wall on all floors directly above or parallel to a basement beam typically wood steel i beam or a basement wall must be considered by a layman as directly load bearing. The forces on the hip rafter jack rafter connection consist of the tributary roof load transfered by the jack rafter plus a force along the axis of the jack rafter which also changes the perspective of the stresses at the bottom of the jacks from straight down to sliding off the plate. A bearing wall will run in the same direction as the ridge of your roof.

There are many houses where just the front and back walls are bearing walls. My home is different. Because i have a hip roof that slopes towards each exterior wall each of those walls is carrying some roof weight. As the foundation block walls yellow on layout run perpendicular to the demo wall red arrow indication on layout we figured it s probably a non load bearing wall.

Not all exterior walls are bearing walls though. The exterior walls on houses that support the roof are primary bearing walls. In hip roof designs all four exterior walls support the ends of roof rafters so all exterior walls bear a weight load from the roof above them. Some claim true rectangular or square hip roof structures are self supporting.

I recently acquired a calculation where such a point load was deemed to be 12 000 lbs on a 28 wide garage having a 10 12 pitch roof.