Related Mcqs:

1. A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one-third of the diagonal tension and ignoring the weight of the beam, the number of shear stirrups required, is___________________?

   A. 30
   B. 35
   C. 40
   D. 45

2. The reinforced concrete beam which has width 25 cm, lever arm 40 cm, shear force 6t/cm2, safe shear stress 5 kg/cm2 and B.M. 24 mt________________?

   A. Is safe in shear
   B. Is unsafe in shear
   C. Is over safe in shear
   D. Needs redesigning

3. In a singly reinforced beam, if the permissible stress in concrete reaches earlier than that in steel, the beam section is called________________?

   A. Under-reinforced section
   B. Over reinforced section
   C. Economic section
   D. Critical section

4. If the maximum shear stress at the end of a simply supported R.C.C. beam of 16 m effective span is 10 kg/cm2, the length of the beam having nominal reinforcement, is________________?

   A. 8 cm
   B. 6 m
   C. 8 m
   D. 10 m

5. The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm2 and 250 kg/cm 2 respectively. If m = 15, the depth of its neutral axis is_______________?

   A. 20 cm
   B. 25 cm
   C. 30 cm
   D. 35 cm

6. The allowable tensile stress in mild steel stirrups, reinforced cement concrete, is_______________?

   A. 1400 kg/cm2
   B. 190 kg/cm2
   C. 260 kg/cm2
   D. 230 kg/cm2

7. is the pre-stressed force applied to the tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is . The maximum stress in the beam, subjected to a maximum bending moment , is_________________?

   A. f = (P/A) + (Z/M)
   B. f = (A/P) + (M/Z)
   C. f = (P/A) + (M/Z)
   D. f = (P/A) + (M/6Z)

8. An R.C.C. beam of 25 cm width and 50 cm effective depth has a clear span of 6 metres and carries a U.D.L. of 3000 kg/m inclusive of its self weight. If the lever arm constant for the section is 0.865, the maximum intensity of shear stress, is_______________?

   A. 8.3 kg/cm2
   B. 7.6 kg/cm2
   C. 21.5 kg/cm 2
   D. 11.4 kg/cm2

9. The maximum shear stress (qmax) in a rectangular beam is_______________?

   A. 1.25 times the average
   B. 1.50 times the average
   C. 1.75 times the average
   D. 2.0 times the average

10. If the maximum shear stress at the end of a simply supported R.C.C. beam of 6 m effective span is 10 kg/cm2, the share stirrups are provided for a distance from either end where, is________________?

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