Transcription of 19 COLD FORMED STEEL SECTIONS – I
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COLD FORMED STEEL SECTIONS -I COLD FORMED STEEL SECTIONS I 19 INTRODUCTION Thin sheet STEEL products are extensively used in building industry, and range from purlins to roof sheeting and floor decking. Generally these are available for use as basic building elements for assembly at site or as prefabricated frames or panels. These thin STEEL SECTIONS are cold- FORMED , their manufacturing process involves forming STEEL SECTIONS in a cold state ( without application of heat) from STEEL sheets of uniform thickness.
Table - 1 Comparison of Hot Rolled and Cold Rolled sections Cold rolled channel 3 mm 94 18.03 2 mm Cold rolled channel 138.8 188 277.5 27.8 Cold rolled channel 5 mm 58.8 117.5 11.8 7.7 50 100 5 Hot rolled channel A 1193 mm2 1193 mm2 1193 mm2 1193 mm2 Ixx 1.9 × 106 mm4 2.55 × 106 mm4 6.99 × 106 mm4 15.53 × 106 mm4 Zxx 38 × 103 mm3 43.4 × ...
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