What is the load bearing capacity of 20mm steel of grade 450? by Santosh Kulkarni https://www.quora.com/What-is-the-load-bearing-capacity-of-20mm-steel-of-grade-450/answer/Santosh-Kulkarni-37?share=be623167&srid=zM5g
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Construction basics re-told 
Thanks for this updated list. Waiting for more sites…
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