Hi, i was wondering could i have some of your thoughts on the following in relation to the analysis of a horizontal rigid floor diaphragm over a transfer structure or maybe someone has come across it before. If you have a shear wall layout at different floor levels on upper floors on a structure which the location of the bracing walls mirrors each floor level i.e. Shear walls are in the same location the entire height of the building. However when you get to lower level the walls become blade column, thicker walls and some are located in different areas i.e.
Thus the horizontal load distribution on the lower floor level where the wall has change would be different to the walls above. A5 Greeting Card Template Psd Email here. For the lateral load distribution analysis of the lower wall level diaphragm, to find out how much load is allocated to each wall depending on its stiffness, would you apply the total horizontal load for the upper levels at the centre of rigidity of the upper walls, at the centre of rigidity location on the lower level diaphragm as one force in each direction, then just analyse the lateral loads at the lower level which are applied directly at that level separately. Infinite Undiscovery Xbox 360 Ntsc Vs Pal. I have previously always placed the total lateral load over transfer levels at the centre of rigidity of the upper wall layout., however now I am not too sure?
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Has anyone ever come across this in the past, analysing using hand calculations rather than software. As a really simplistic example basically if You had say a 30m x 30m square area on plan forming a floor diaphragm on upper levels of a building. At each one of this those levels You then have one bracing element only in the right hand corner of the 30m x 30m square. From this You apply say evenly distributed horizontal wind load across the face of the level applied at the centre of pressure I.e. Say 15m in from each side, the bracing member in the corner then takes all the loading based on its stiffness as per any general shear wall layout.