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Identify the INCORRECT statement with respect to concrete Stress block in compression of a singly reinforced cement concrete section.
Question

Identify the INCORRECT statement with respect to concrete Stress block in compression of a singly reinforced cement concrete section.

A.

The depth of centre of compressive force from the extreme top fibre in compression is 0.42xu.

B.

The bending stress at the neutral axis of the section is zero.

C.

The area of stress block is equal to 0.36fckxu.

D.

The bending stress at extreme fibre is 0.67 fck.

Correct option is D


The various features of concrete stress block considered by IS 456:2000: for limit State Design are
shown below figure:

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