Consequently, the first priority in designing for economy is selecting the structural system that offers lowest overall cost while meeting load requirements. ![]() Likewise, the majority of a structure’s formwork cost is usually associated with the horizontal elements. All structural costs, floor framing is usually the largest component. Post-tensioning is preferred as it is in vogue, in construction of large span slabs. Intensity of assumed loading is kept sufficient enough, so that the factored bending moment will be comparable to that developing in cases of commercial buildings. ![]() For smaller spans, associated with normal building works, prestressed concrete construction becomes too cumbersome, irrespective of the economics involved. ABSTRACT: This work includes the design and estimate for flat slabs of various spans, ranging from 6.0 m to 12.0 m, by reinforced concrete cement and prestressed concrete techniques.
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