engineering recuitment GATE CE 2023-24 Test Series Reinforced Concrete Structures Prestress Concrete Losses in Prestress
A simply supported post Tensioned concrete Beam of span 15 m has a cross-section of (300 mm × 800 mm). The prestressing force is 1300 kN with zero eccentricity at the supports and an eccentric of 250 mm at the center, the cable profile being parabolic. Assume u = 0.35 and K = 0.15 per 100 m ; choose the correct option(s) out of the given statements. (if jacking is done from both ends)
1
The loss of prestressing force is 42.761 kN
2
The percentage loss of prestressing is 3.93%
3
The loss of prestressing force is 44.954 kN
4
The percentage loss of prestressing is 3.458 %