A load-bearing structure is any structure in which walls bear all loads resting upon it by conducting its weight and ultimately transfer the loads to ground through its foundation. Normally used in low height structures which involves less overall load as a whole resting upon its walls. The materials most often used to construct load-bearing walls brick or concrete blocks.
Depending on the type of building and the number of floors, thickness of the load-bearing walls are decided. On the other hand framed structure involves a basic skeleton made of concrete or steel members which transfers all the load resting on it to the ground. Framed structure is largely used in high rise and complex structures where dead load and live load is likely to be quite high for a load bearing wall to carry. 
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