Pre-Engineered Structure for Ware House

Abstract

Man has always resorted to innovative means to meet his changing needs. There has been a constant evolution in the construction techniques ever since the time man learnt to hold the spade in his hand. The corporate world, manufacturing sector, residential and institutional sectors, all demand quick construction. The Corporate giants always consider “time” as the prime deciding factor in terms of profitability. For them, earlier construction of commercial buildings means earlier return on investments. Today, there is a dire need of cost effective technology especially in the ever growing field of construction. Pre Engineering is a new construction technology evolved that uses the assembly system, just like a building block game. It comprises of pre designed building components of steel for specific project loading. Connectivity is very simple by just the nut and bolt mechanism minus the welding. This leads to major construction sites to healthy working environment. The concept of PEB is catching up fast in India. General information regarding pre-engineered structure is described. Landmark achieved by pre-engineered technique is mentioned. It defines the terminology of pre-engineered. Basic parameters, primary members and secondary members explained in detail. Advantage and application of pre-engineered structure for ware house is describe. Difference between pre-engineered Building with conventional steel building is mentioned. Conventional portal ware house is compared with P.E.B ware house to check in which case it achieve the economy in steel quantity. Ware house is model, analysis and design by STAAD Pro.2006. To compare the results configuration of ware house remain same. Design is done based on IS:800 in STAAD. Yield stress of steel assumes 540 Mpa in P.E.B ware house. Yield stress of Steel assumes 250 Mpa in conventional portal ware house. Application of loading remains same in both cases. D.L, L.L, Wind X (Cpe+Cpi), Wind -X (Cpe+Cpi), Wind Z (Cpe+Cpi), Wind -Z (Cpe+Cpi) cases considered in modeling. Analysis result observed for base reaction, column moment, rafter moment, displacement at ridge, displacement at midspan. Analysis result compared for both warehouses. Steel quantity is observed in both cases. Spacing of P.E.B portal vary to check in which case it achieve the economy in steel quantity. Ware house is model, analysis and design by STAAD Pro.2006. Configuration of ware house remain same only spacing of portal is vary from 4.5 m, 6 m, 7.5 m, 9 m. Design is done based on IS:800 in STAAD. Yield stress of steel assume 540 Mpa in all cases. D.L, L.L, Wind X (Cpe+Cpi), Wind -X (Cpe+Cpi), Wind Z (Cpe+Cpi), Wind -Z (Cpe+Cpi) cases considered in modeling. Application of loading remains same in all cases. Analysis result observed for base reaction, column moment, rafter moment, displacement at ridge, displacement at midspan. Analysis result compared.Steel quantity is observed for mentioned cases. Width of P.E.B portal vary to check structural behavior of ware house. Ware house is model and analysis by STAAD Pro.2006. Configuration of ware house remains same only width of portal is vary from 25 m two bay to 50 m one bay. Yield stress of steel assume 540 Mpa in both cases. Analysis result observed for base reaction, column moment, rafter moment, displacement at ridge, displacement at midspan. Analysis result compared for both ware house. Ware house is design manually based on analysis result given by STAAD Pro.2006. Excel worksheet is prepared for different structural elements like Taper Column, Taper Rafter, Purlin, End Plate Connection, Pedestal, Isolated Footing and Base Plate. Erection work at site is observed. Snaps of erection work is attached. Drawings for understanding the configuration of ware house is described.