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inchak at tatasteel.com Guest
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Posted: Wed Jul 13, 2005 5:26 am Post subject: Message No 57 - Guaranteed min & Max strength of rebar |
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Dear Mr. Arun Kashikar You asked: "If I recollect correctly IS:13920 puts upper limit on yield strength of reinforcement as 415MPa." My response to that: NO The AMENDMENT NO. 2 MARCH 2002 TO IS 13920 : 1993 DUCTILE DETAILING OF REINFORCED CONCRETE STRUCTURES SUBJECTED TO SEISMIC FORCES - CODE OF PRACTICE Clearly mentions: QUOTE (Page 3, clause 5.3) - Insert the following at the end of the clause: 'However, high strength deformed steel bars, produced by the thermo-mechanical treatment process, of grades Fe 500 and Fe 550, having elongation more that 14.5 percent and conforming to other requirements of IS 1786 : 1985 may also be used for the reinforcement.' UNQUOTE So now there is no upper limit on yield strength of reinforcement.
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