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To create the large and uninterrupted column free enclosures pre-engineered buildings are being preferred. Pre- engineered building (PEB) is an assembly of light Gauge roof panels placed on steel purlins and which is connected between the rigid frames. By providing proper tapering sections as per bending moment requirement the excess steel is avoided and thus this system reduces construction time and cost of the building. From the parametric study, the PEB is fabricated in a factory and then it is erected at site as per the requirement. In this paper single storey PEB is selected for analysis and presents the effectiveness of the behavior of pre - engineered structure in industrial building. The number of trials to be conducted by varying the frame spacing and frame type to achieve the economic structure.