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Posted: Wed Oct 17, 2018 7:01 am Post subject: Use of two different grades of rebars
I guess we can use different grade structural steel but for different members and individual properties need to be assigened properly during analysis.
As for rebars a single section whether its a column, beam etc cannot use 2 different grade steel. If such provision is to be made some factor need to be calculated and depend how much % for individual grade you are planning to use.
I guess it may also create confusion during site works.
Joined: 14 Mar 2012 Posts: 13 Location: Navi Mumbai
Posted: Thu Oct 18, 2018 4:02 pm Post subject: Different grade ... stress
A lower grade steel will achieve its stress limits earlier than higher grade of steel e.g. lower grade of steel will yield before the higher grade steel .. making higher grade of steel inefficient. A standard design procedure needs all elements e.g. concrete and steel achieve its stress limits simultaneously.
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