Standard Deviation

Posted January 15th, 2009 byP.K.Mallick
Project: www.www.buonovino.com
Component: Code
Category: support request
Priority: critical
Assigned: civilenggmink
Status: active
Description

Grade of concrete in a particular construction is unknown.However cubes' strength are available. Cubes have been taken in right frequency as per IS:456-2000. Is it possible to determine the Grade of concrete from available data of cubes' strength?

Updates

#1submitted bysunilkshrivastavon Thu, 02/11/2010 - 05:47

Dear Mr P K Mallick
You should calculate standard deviation and mean of all sample results thenafter apply the acceptance criteria as per page 30 table 11 of IS 456:2000 with amendments No.3.From this you can find out strength of concrete for your decision making.

Sunil Kumar Shrivastav
SEFI Member

#2submitted bycivilenggminkon Fri, 09/24/2010 - 16:09
Title: GRADE OF CONCRETE. » Standard Deviation
Assigned to: P.K.Mallick » civilenggmink

Dear Sir

i want to know why we need calculate standard deviation for concrete....?

pls ..

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