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SP-24 & IS-456

 
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ramu_se
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Joined: 30 Oct 2017
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PostPosted: Tue Jul 05, 2022 3:52 am    Post subject: SP-24 & IS-456 Reply with quote

Dear All,

SP-24 & IS- 456 both codes are same?

If not so, what is the purpose of SP-24?

Can you share the copy of SP-24?

Thanks & Regards,
Ramu.
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vikram.jeet
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Joined: 26 Jan 2003
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PostPosted: Tue Jul 05, 2022 4:54 am    Post subject: Reply with quote

SP24 as we all know is EXPLANATORY HANDBOOK ON IS 456. -1978 version.

Though IS 456 is revised with 2000 version  , the revised version of HB SP24 is , I think  , awaited .,

But SP24 explanations are very interesting to read .
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ramu_se
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PostPosted: Tue Jul 05, 2022 9:16 am    Post subject: Reply with quote

Thank you sir.
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ramu_se
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PostPosted: Fri Jul 08, 2022 5:00 am    Post subject: Reply with quote

Dear sir,

sp 24 is withdrawn from the BIS website officially, Hence as we calculate OPC concrete strength at any age by using Abram formula "f= t/a*bt x grade" given in sp 24 and further we use is it for calculation of Concrete Acceptance criteria as Is 456 is also get amended and criteria is also get changed as in current Secanario there's no code available for the consideration that in future what should be get followed the same or this formula is merged into some another code, how can be Acceptance criteria should be followed accordingly as per amendment.

Kindly provide your guidance.

Thanks,
Ramu.
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vikram.jeet
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PostPosted: Fri Jul 08, 2022 4:07 pm    Post subject: Reply with quote

Formula for working out concrete strength at age beyond 28 days as given in SP24 can be used as it is taken from International Literature, even if IS code is withdrawn for the present.

Acceptance criteria for test specimens , however , shall be in accordance with latest version of IS 456.
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