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Cold formed steel sections are extensively used in developed countries for a wide range of applications like roofs in the form of deck sheeting and also as structural elements like beam and column. In a developing country like India, where use of conventional hot rolled steel sections itself is in developing stages, the use of cold formed steel is very less. But if cold formed built-up sections are developed efficiently, cold formed sections can be used for wide range of applications where spans are minimum and fewer loads are acting. Structural behaviour of cold formed sections based on the different type of fasteners was studied in this paper. Behaviour of cold formed sections mainly based on welding and bolts are compared and studied. Strength aspects of cold formed sections due to different types of fasteners along with their mode of connection was studied. Studies shows significant changes in behaviour of similar members were obtained by varying the type of fasteners. [ABSTRACT FROM AUTHOR]