Comparison of Design Procedures for Pre Engineering Buildings (PEB): A Case Study

Abstract

In recent years, the introduction of Pre Engineered Building (PEB) concept in the design of structures has helped in optimizing design. The adoptability of PEB in the place of Conventional Steel Building (CSB) design concept resulted in many advantages, including economy and easier fabrication. In this study, an industrial structure (Ware House) is analyzed and designed according to the Indian standards, IS 800-1984, IS 8002007 and also by referring MBMA-96 and AISC-89. In this study, a structure with length 187m,width 40m,with clear height 8m and having R-Slope 1:10,isconsidered to carry out analysis& design for 2D frames (End frame, frame without crane and frame with 3 module cranes). The economy of the structure is discussed in terms of its weight comparison, between Indian codes (IS800-1984, IS800-2007) & American code (MBMA-96), & between Indian codes (IS800-1984, IS800-2007). Steel is the material of choice for design because it is inherently ductile and flexible. In structural engineering, a pre-engineered building (PEB) is designed by a manufacturer, to be fabricated using a pre-determined inventory of raw materials and manufacturing methods that can efficiently satisfy a wide range of structural and aesthetic design requirements. PEB can be fitted with different structural accessories including mezzanine floors, canopies, fasciae, interior partitions, etc. The concept of PEB is the frame geometry which matches the shape of the internal stress (bending moment) diagram thus optimizing material usage and reducing the total weight of the structure. The complete designing is done at the factory and the building components are brought to the site in knock down condition. These components are then fixed/ jointed at the site and raised with the help of cranes. Structure Configuration Selected structure is located in Rajasthan, India. Structure having the dimensions length 187m, width 40m, eave height 8m(clear), &roof slope 1:10.Structure suited in seismic zone IV with wind speed 47 m/sec considered life span of structure as 5 years. Complete structure configuration details can be found in Table I as follows [1]-[2], [10]-[11]: Dead Load Calculation Dead load calculation includes the weight calculation of sheeting, sag angles, purlins and insulation material as follows in Table II [2]. G. Sai Kiran METEY Engineering Consultancy, Hyderabad Location Rajasthan, India. Length 187 m