INVESTIGATION OF FLAT SLAB STRUCTURES WITH AND WITHOUT EXPANSION JOINTS FOR THERMAL STRESSES

In the present scenario there is increase in demand for structural members without expansion joint as per architectectural and aesthetic appearance like malls, commercial spaces, office buildings, IT parks. Indian Standard code, IS-456:2000 states buildings longer than 45m be analysed for the thermal stresses and appropriate measures should be taken during erecting the structural system, whereas IS codes are negligent towards such kind of designs as well as considering temperature load factors along with gravity loads. Added to it there are no proper guidelines available with design engineers to arrive at design temperature value that should be considered during design. This study mainly deals with design and analysis of structures of length 80m, 138m and 180m with and without expansion joints. Changes in stress at different levels, torsion on the peripheral beam and overall increase in steel quantity on the structure after imparting temperature loads during the design of a structure.