Hello is my answer key correct on the stress at service load on bottom and top fiberCan you indicate which one is the service load and transfer of pre stress P Рес68,000(250)(240)3600,000,00068,000 68,000(250)(360)3600,000,00068,000ft100,000= 0.45 MPaРесfo = --+-2.38 MPaA' I100,0001mweight of beam = 24 (100,000 mm²)(1000mm)= 2.4 kN/m³w = 3.5 + 4.75 + 2.4 = 10.65 kN/m10.65(16)?M == 340.80 kN – m8Mc340.8x10 (240)ft =3600,000,000= -22.72 MPaMc340.8x10°(360)fo =T= 34.08 MPa3600,000,000P = 160,000(0.90)(0.9) = 129,600 lbsbh 14(24)3= 16,1281212 A posttensioned concrete beam with section shown contains prestressing cables 800 mm? with initial prestress of 100 MPa. Thebeam is supported over a span of 16 m. The centroid of the section is located 240 mm from the extreme compression fiber and thecables are located 110 mm from the bottom of the beam. It is to carry a dead load of 3.5 kN/m and a live load of 4.75 kN/m. Thelosses of prestress is about 15%. Calculate the stress at service loads of prestress for the bottom fiber.500 mm600 mm100,000 mm2I = 3600 x 106 mm4A =

Answer We are given Area of cables = 800 mm2 Initial Prestress force = 100 Mpa Beam span L =16 m…

A posttensioned concrete beam with section shown contains prestressing cables 800 mm² with initial prestress of 100 MPa. The beam is supported over a span of 16 m. The centroid of the section is located 240 mm from the extreme compression fiber and the cables are located 110 mm from the bottom of the beam. It is to carry a dead load of 3.5 kN/m and a live load of 4.75 kN/m. The losses of prestress is about 15%. Calculate the stress at service loads of prestress for the bottom fiber. 500 mm 600 mm A = 100,000 mm2 I = 3600 x 106 mm4

A posttensioned concrete beam with section shown contains prestressing cables 800 mm² with initial prestress of 100 MPa. The beam is supported over a span of 16 m. The centroid of the section is located 240 mm from the extreme compression fiber and the cables are located 110 mm from the bottom of the beam. It is to carry a dead load of 3.5 kN/m and a live load of 4.75 kN/m. The losses of prestress is about 15%. Calculate the stress at service loads of prestress for the bottom fiber. 500 mm 600 mm A = 100,000 mm2 I = 3600 x 106 mm4

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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