Comparative Weight and Cost Analysis of Three Roof Systems Across Varied Spans
Abstract
The primary objective of this study is to conduct a comprehensive cost analysis of three distinct roof systems (Profile beam, truss, lattice truss) within varying spans (10m, 20m, 30m) for the design of steel structures. By examining the cost implications of three different roof systems across various spans, this study aims to identify the roofing system that offers the highest level of cost efficiency for each specific span. Three distinct roof systems (profile beam, truss, lattice truss) within varying spans (10m, 20m, 30m) are modeled in the SAP2000 package program. Safe and low-cost solutions were investigated for each model. In the final solution, the amount of steel per square meter for each model was evaluated. The most economical roof system varies for each span. The system with the lowest steel usage per unit area is the 'beam' roof system for a 10-meter span, the 'truss beam' system for a 20-meter span, and the 'lattice truss' system for a 30-meter span. In all systems, the steel cost per unit area increases as the span increases. While this increasing rate is approximately proportional to the span in the 'beam' roof system, the rate of increase gradually decreases in the 'truss' roof system and 'lattice truss' roof system. This study will help engineers and decision-makers make informed choices about roof systems during the design phase of steel structures. This study will also provide an evaluation of the economic feasibility of each roof system according to the different spans.
Keywords
Beam, Truss beam, Lattice beam, Steel structures, Cost analysis
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