Why limit deflection in beams

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Join now! This factor shall not be applied for cantilevers and it shall be checked by calculations. The allowable span depth ratio shall be modified by the factors for tension and compression reinforcements. Following either method, the maximum allowable deflection in concrete beams needs to be limited. Further, the article, deflection of slab provide more information on a calculation related to the deflection check.

Pallet rack beams provide lateral support for rack systems and support pallet loads. These loads are then transferred to the uprights of the system. Given that the weakest link in a pallet rack system will control its load capacity, it is important to understand the steel beam deflection limits of each component. When heavy pallet loads are applied to beams, the beams may begin to sag. This sagging is also called deflection, which is the degree to which a structural element is displaced under a load.

In general, the deflection of beams is permitted but only to a certain limit. In the design of pallet rack beams, they are checked for strength and deflection. A beam that is shallow, relative to its span, will often be limited by deflection. According to North American rack design standards 1,2 , the vertical deflection of beams loaded by pallets should not exceed the length of the beam L divided by For a typical 8-foot-long beam, this would represent a maximum deflection of approximately 0.

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