engineering recuitment GATE CE 2023-24 Test Series Reinforced Concrete Structures Prestress Concrete
A prestressed beam of size 250 × 400 mm deep is prestressed by 14 tendons of 6 mm diameter. The cable is located at 150 mm from bottom of the beam. If the initial prestress in the beam is 1250 N/mm2. The loss of prestress due to elastic deformation and creep of concrete respectively will be?
Assume:
M-40 Grade concrete
creep coefficient = 1.6
Modulus of elasticity = 2 × 105 MPa.
Neglect the effect due to dead load.1
54.72 MPa and 87.55 MPa
2
37.13 MPa and 59.42 MPa
3
25.41 MPa and 40.65 MPa
4
42.30 mPa and 55 MPa