The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (where xu is the depth of neutral axis at the limit state of collapse)

Concrete Technology and Design of Concrete Structures
The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (where xu is the depth of neutral axis at the limit state of collapse)

0.573 xu

0.416 xu

0.367 xu

0.446 xu

0.573 xu

0.416 xu

0.367 xu

0.446 xu

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Concrete Technology and Design of Concrete Structures
The design yield stress of steel according to IS: 456-1978 is (where fy is the characteristic yield strength of steel)

0.67 fy

0.87 fy

0.57 fy

0.37 fy

0.67 fy

0.87 fy

0.57 fy

0.37 fy

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Concrete Technology and Design of Concrete Structures
If the permissible stress in steel in tension is 140 N/mm², then the depth of neutral axis for a singly reinforced rectangular balanced section will be

0.45 d

0.35 d

dependent on grade of concrete also

0.40 d

0.45 d

0.35 d

dependent on grade of concrete also

0.40 d

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Concrete Technology and Design of Concrete Structures
The strength of concrete after one year as compared to 28 days strength is about

25 to 50% more

15 to 20% more

10 to 15% more

20 to 25% more

25 to 50% more

15 to 20% more

10 to 15% more

20 to 25% more

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Concrete Technology and Design of Concrete Structures
The permissible diagonal tensile stress in reinforced brick work is

zero

about 1.0 N/mm²

about 0.1 N/mm²

0.3 N/mm² to 0.7 N/mm²

zero

about 1.0 N/mm²

about 0.1 N/mm²

0.3 N/mm² to 0.7 N/mm²

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Concrete Technology and Design of Concrete Structures
The relation between modulus of rupture fcr, splitting strength fcs and direct tensile strength fcl is given by

tcr – rcs = tct

fcr

fcr>fcs>fc.

fc5>fcr>fC

tcr – rcs = tct

fcr

fcr>fcs>fc.

fc5>fcr>fC

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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (where xu is the depth of neutral axis at the limit state of collapse)

Concrete Technology and Design of Concrete Structures The design yield stress of steel according to IS: 456-1978 is (where fy is the characteristic yield strength of steel)

Concrete Technology and Design of Concrete Structures If the permissible stress in steel in tension is 140 N/mm², then the depth of neutral axis for a singly reinforced rectangular balanced section will be

Concrete Technology and Design of Concrete Structures The strength of concrete after one year as compared to 28 days strength is about

Concrete Technology and Design of Concrete Structures The permissible diagonal tensile stress in reinforced brick work is

Concrete Technology and Design of Concrete Structures The relation between modulus of rupture fcr, splitting strength fcs and direct tensile strength fcl is given by

Concrete Technology and Design of Concrete Structures
The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (where xu is the depth of neutral axis at the limit state of collapse)

Concrete Technology and Design of Concrete Structures
The design yield stress of steel according to IS: 456-1978 is (where fy is the characteristic yield strength of steel)

Concrete Technology and Design of Concrete Structures
If the permissible stress in steel in tension is 140 N/mm², then the depth of neutral axis for a singly reinforced rectangular balanced section will be

Concrete Technology and Design of Concrete Structures
The strength of concrete after one year as compared to 28 days strength is about

Concrete Technology and Design of Concrete Structures
The permissible diagonal tensile stress in reinforced brick work is

Concrete Technology and Design of Concrete Structures
The relation between modulus of rupture fcr, splitting strength fcs and direct tensile strength fcl is given by