eyemeyar
Structural
- Oct 16, 2014
- 14
Hello Everyone. I would like to hear your ideas about doubly reinforced beams that has equal amount of reinforcement in compression and in tension. Is that ideal or no?
Thank you. =)
Thank you. =)
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rapt said:Do you want to rethink your comments regarding conceiving as a steel beam and deflection control
rapt said:If you try doing the deflection calculations based purely on the reinforcement, you are wasting your time.
rapt said:If you ignore the concrete contribution then you are not considering it to be composite, purely steel!
IDS said:KootK - I don't think anyone disputes that ignoring the concrete is conservative.
rapt said:Do you want to rethink your comments regarding conceiving as a steel beam and deflection control?
IDS said:...for no real benefit, since calculating the fully cracked stiffness is almost as quick, and gives a much better estimate of the true value.
rapt said:It would give a meaningless number that gives no idea of the real deflection...
Kootk said:To my knowledge, neither of the methods that you guys have proposed is used in my area
IDS said:No-one calculates concrete and steel stresses assuming a cracked section and linear-elastic properties?
rapt said:Combining the 2 you get 3 * 2 = 6 times elastic. There was a British Concrete Society Paper/Technical Report on Long Term Deflections that came to the same conclusion