A pre-cast pile generally used, is______________?

Related Mcqs:

1. In testing a pile by load test, pile platform is loaded with one and half times the design load and a maximum settlement is noted. The load is gradually removed and the consequent rebound is measured. For a safe pile, the net settlement (i.e. total settlement minus rebound) per tonne of test load should not exceed________________?

   A. 10 mm
   B. 15 mm
   C. 20 mm
   D. 25 mm

2. carrying a uniformly distributed load per metre length is suspended at two A pile of length points, the maximum, B.M. at the centre of the pile or at the points of suspension, is_________________?

   A. WL/8
   B. WL²/24
   C. WL²/47
   D. WL²/16

3. The advantage of a concrete pile over a timber pile, is_______________?

   A. No decay due to termites

   B. No restriction on length

   C. Higher bearing capacity

   D. All the above

4. is the pre- stressed force applied to tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is . The minimum stress on 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)

5. If is the sectional area of a pre-stressed rectangular beam provided with a tendon pre -stressed by a force through its centroidal longitudinal axis, the compressive stress in concrete, is_______________?

   A. P/A
   B. A/P
   C. P/2A
   D. 2A/P

6. 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)

7. To ensure that the hogging bending moment at two points of suspension of a pile of length L equals the sagging moment at its centre, the distances of the points of suspension from either end, is________________?

   A. 0.107 L
   B. 0.207 L
   C. 0.307 L
   D. 0.407 L

8. carrying a uniformly distributed load per metre length is suspended at the A pile of length centre and from other two points 0.15 L from either end ; the maximum hogging moment will be_______________?

   A. WL²/15
   B. WL²/30
   C. WL²/60
   D. WL²/90

9. Pick up the assumption for the design of a pre-stressed concrete member from the following_______________?

   A. A transverse plane section remains a plane after bending
   B. During deformation limits, Hook’s law is equally applicable to concrete as well as to steel
   C. Variation of stress in reinforcement due to changes in external loading is negligible
   D. All the above

10. A pre-stressed concrete member__________________?

    A. Is made of concrete
    B. Is made of reinforced concrete
    C. Is stressed after casting
    D. Possesses internal stresses