The behavior of the basaltic shear diaphragms of the remaining buildings of ancient times
was investigated as experimental research,and its resistance to natural factors and
horizontal loads resulting from wind and earthquakes,to take advantage of
them in the
maintenance of modern buildings,which are associated with floors and beams as horizontal
shear diaphragmsIn the hot and cold areas of the African continent, Asia and other similar
areas,to replace the reinforced concrete shear diaphragms,and metal shear diaphragms that
lose their resistance to the above factors. When the buildings are inspected, the vertical and
slanted slits resulting from the side loads are placed,it was found that the appearance of the
cracks related to the hardness of the shear diaphragm section, the basalt stone
specifications and the design of the shear diaphragm base.The research was conducted
to determine the durability, water permeability and resistance to pressure and tensile
strength of basalt stone samples used in historic stone buildings and their location in
laboratory methods.Horizontal loads resulting from seismic intensity were determined on
the front of the building at the tile level according to international requirements and
specifications.The method of calculating the basaltic shear diaphragms was
applied by applying arithmetic to build a basalt stone from several floors and a basement,
taking into account the characteristic resistance of basalt, depending on its density from
pressure and stretching and basalt stone in calculating.
The horizontal Join beams with the slabs of reinforced concrete play the, the role of horizontal shear walls on the building height, Thus, the horizontal beams, columns and shear walls work together to form, the vertical resistance and horizontal loa
ds resulting from wind pressure or the intensity of earthquakes As a result to the great importance of the work of the join beams between wings of shear wall in the carrier wholesale of armed concrete، we have conducted experiments on shear wall and the result experiments compare with theory scientists and researchers in high- buildings. Been compared join beams with moment of stiffness constant in the level of its confluence with wings shear walls (Hold the forces of resistance horizontal dynamic plasticity in stage). And join beams in the form of crowns with moment of stiffness variable in the level of its confluence with wings shear walls.
We suggest a new theory with relationship for the change in the moment of stiffness join beams with crowns between wings of shear wall from reinforced concrete. Extract the experimental results and
compare them with the proposals of the new theory, and computational methods for global theories on the subject of search
And the impact of the work of the join beams with crowns between wings shear walls on the horizontal loads external pressure intensity of earthquakes or wind.