STUDY OF VARIOUS DESIGN METHODS FOR COLD – FORMED LIGHT GAUGE STEEL SECTIONS FOR COMPRESIVE STRENGTH

S.A.Kakade, B.A.Bhandarkar, S.K. Sonar, A.D.Samare

Abstract: As the steel is tested for all types of tests viz, compressive, tensile test, shear test, torsion test, etc. This paper provides an experimental investigation for the compressive strength of Cold – Formed light gauge steel plain (stiffened) tubular sections. The test specimens were brake pressed from high strength structural steel sheets. In addition, the test strengths were compared with the design strengths calculated using the Indian Standard and North American Specification for Cold –Formed steel structures. Compression members are linear members in which axial forces act to cause elongation (stretch). Such members can sustain loads up to the ultimate load, at which stage they may fail by rupture at a critical section. However, if the gross area of the member yields over a major portion of its length before the rupture load is reached, the member may become non – functional due to excessive elongation. I.S. 801- 1975 is in Working Stress Method (W.S.M.) and in (M.K.S.) system. So it is required to study Allowable Stress Design (A.S.D.), Load and Resistance-Factor-Design (L.R.F.D.) and Limit State Method (L.S.M.).It is revealed that the design strengths predicted by the Specification and Standard are generally very conservative. It is observed that some specimen show lower strength than the value predicted by the American Iron and Steel Institute.

Keywords: Cold – Formed steel, Compressive strength, stiffened.

DOI: https://doi.org/10.15623/ijret.2014.0321003