Why stairs should not be set in the end of the building is the specification of the right?
In addition, under the action of the earthquake, the staircase bracing the structure of the force is also detrimental to the structure, easy to cause the wall of the local force of the larger problems.
And the lack of seismic construction measures, resulting in the structure of the end of the gable wall flash, corner parts of the wall shear damage. Moreover, through the establishment of the model for finite element analysis, when the staircase set at the end of the structure, or structural plane for the corner, the structure will have a greater change is not conducive to structural forces. Compared with other wall, vertical wall, is located in the staircase between the gable and outside the vertical wall due to the plane outside the weak weaker, no support height is large, the floor is not continuous, there is the wrong layer, Stress is greater.
"Code for Seismic Design"
According to the actual damage caused by the provisions of the Tangshan earthquake during the multi-storey masonry structure staircase damage, and then again in the Wenchuan earthquake staged: a large number of stairwells arranged in the masonry structure and the end of the corner,
