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[p_kadam at vsnl.com]

Dear all,

Refer Article Steel-Reinforcement by Dr P C Basu.

"Cautious approach" is advised while using Fe 550. It has not been ruled out.

regards,

P Kadam

 Dear Mr. Kadam,
>
> The high yield strength steel produces higher factored shears and they
> have to be carried by the beam without exceeding the maximum shear
> stress Tcmax given in Table 20 of I.S. 456 : 2000 even though shear
> reinforcement is provided. Therefore, higher concrete sections
> will be
> required for beams to resist shears produced during earthquake episode
> and it has futhther implications on the stiffness of the frame that
> has additional adverse effect on the force distribution and will
> attrect higher earthquake forces
>
> This means the proposed steel having high yield strength such as Fe
> 600 is not welcome and if you look at New Zealand code AS/NZS
> 4671-2001, they have only Fe 300E and Fe500E category steel.
>
> Neelkanth D Joshi
> Joshi Consultants
>joshiconsultants9@gmail.com
>
>
>
>
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