The city office of VIKRANT GROUP OF INSTITUTIONS is under construction at Gwalior. The area of city office is (12.5m x 27.5m) . The head room for each floor sanctioned by the Municipal Corporation of Gwalior is only 3 meters . As the head room is not sufficient to accommodate RCC beams for 12.5 meter of span. Due to this problem of less head room, our students were instructed to design the structure without beams. Therefore our students gave an innovative idea to introduce prestressed solid roof slab to solve this problem of lesser head room. As such a solid prestressed slab has been designed giving less thickness for slab to provide efficient dimensions (i.e. minimum thickness of slab).Under prestressing the area of the concrete below neutral axis (N.A.) is also utilized fully as compared to ordinary RCC work, thus providing most economical structure with minimum dimension for required strength . M-35 Mix design , High tension wires (HT steel ) with required sheathing have been provided. After casting the process of post tensioning have been implemented successfully .For prestressing hydraulic jacks have been used then the cement (OPC) slurry was injected into the hollow sheathings
The following test have been done :-
(a) Aggregate grading test .
(b) Impact test for coarse aggregate
(c) Water absorption test for coarse aggregate .
(d) Cube crushing of M-35 Mix.
It is the First Building Constructed in Gwalior Region on the principle of prestressing, designed by our students of M.Tech. (Structural Engineering) and checked by the Dept. of Civil Engg., VITM, Gwalior, (M.P.).
Prof. J.S. Kushwah, Head, Dept of Civil Engineering., VITM, Gwalior