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Posted: Sat Jan 24, 2004 12:22 pm Post subject: Expansion Joints In Buildings.
I was discussing this with one of my colleague & I am quite convinced by his reply . Columns or vertical RCC members are subjected to heavy Axial loads (always) , which acts downwards , so there is no question of Columns expanding in Vertical direction. Whereas in Beams of Slabs it's not the case. In case of horizontal members the RCC components can expand or contract with rise & fall in temperature. But still there are some minor dimensional changes due to potential impact of temperature , which can be overcome by appropriate design methods , as we do while designing Concrete Arch (supporting huge concentrated loads). In fact in Arch design this temperature effect caters for Major Moments. Correct me if I am wrong.
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