Question

A post-tensioned member with simply support span cover length equal 18 m, the section properties is already calculated as shown below, assume indoor condition with 0-1.35 the initial stress is estimated foi -1024 N/mm2 was apply in pre-stressing tendon of low-relaxation steel on area Aps 2100 mm2 all the tendons are stressed simultaneously. The shape of the tendon along the member was straight with eccentricity equal to 276. Anchorage draw-in is 9mm Use the following problem data: ws.-19 KN/m ; E.-25 kN/mm 2 ; . fou2s 40 N/mmEs 195 kN/mm2 A 6.02 x 10 mm28.36 x 1010 mm H 0.24 ; K 16 x 10" Per meter ; 0.56 Determine the loss of pre-stress for this member. [CO2-PO2:C41(20 marks)

Answer 1