According to Whitney’s theory, ultimate strain of concrete is assumed to be_____________?

Related Mcqs:

1. According to Whitney’s theory, depth of stress block for a balanced section of a concrete beam is limited to_______________?

   A. 0.43 d
   B. 0.537 d
   C. 0.68 d
   D. 0.85 d

   where d is effective depth of beam[ES 2k]

2. As per Whitney’s theory, the maximum moment of resistance of the balanced section of a beam of width b and effective depth d is given by_______________?

   A. ^acybd2
   B. ^acybd2
   C. 0.185acybd2
   D. 0.43acybd2
   where acy is the cylinder compressive strength of concrete

3. Approximate value of shrinkage strain in concrete, is________________?

   A. 0.003
   B. 0.0003
   C. 0.00003
   D. 0.03

4. Minimum grade of concrete to be used in reinforced concrete as per IS:456-1978 is_____________?

   A. M15
   B. M20
   C. M 10
   D. M25

5. According to IS : 456 -1978, the modulus of elasticity of concrete Ec (in N/mm2) can be taken as______________?

   A. Ec = = 5700
   B. Ec = = 570
   C. Ec = = 5700fck
   D. Ec = where fck N/mm2 = 700 is the characteristic strength in

6. According to IS : 456-1978, the fiexural strength of concrete is________________?

   A. directly proportional to compressive strength
   B. inversely proportional to compressive strength
   C. directly proportional to square root of compressive strength
   D. inversely proportional to square root of compressive strength

7. Minimum thickness of load bearing RCC wall should be_____________?

   A. 50 mm
   B. 100 mm
   C. 150 mm
   D. 200 mm

8. Stress strain curve of high tensile steel_______________?

   A. has a definite yield point
   B. does not show definite yield point but yield point is defined by 0.1% proof stress
   C. does not show definite yield point but yield point is defined by 0.2% proof stress
   D. does not show definite yield point but yield point is defined by 2% proof stress

9. Ultimate strength of cold drawn high steel wires_______________?

   A. increases with increase in diameter of bar
   B. decreases with increase in diameter of bar
   C. does not depend on diameter of bar
   D. none of the above

10. If nominal shear stress tv exceeds the design shear strength of concrete xc, the nominal shear reinforcement as per IS : 456-1978 shall be provided for carrying a shear stress equal to__________________?

    A. xv
    B. xc
    C. xv – TC
    D. Tv + Tc