A simply supported post-tensioned concrete beam is shown in Figure 1. The beam is subjected to...
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A simply supported post-tensioned concrete beam is shown in Figure 1. The beam is subjected to self-weight and live load. The prestressing steel is contained in two cables, each consisting of 13 super grade 7-wire low relaxation strands of 12.7 mm diameter. Each cable has the area of 1301 mm^2. The concrete strength is f = 40 MPa. Stressing takes place when the concrete is at age 14 days with strength of 32 MPa. The beam is exposed in a near-coastal area. Determine the losses of prestress for this beam. Design data: 4 = 6200 mm², f = 500 MPa, E. = 200000 MPa A, = 2602 mm, f, 1840 MPa, E, = 190000 MPa, Op=1100 MPa = Wo = 18 kN/m 795 650 20 m 1200 300 250 850 Figure 1. Simply supported prestressed concrete beam A simply supported post-tensioned concrete beam is shown in Figure 1. The beam is subjected to self-weight and live load. The prestressing steel is contained in two cables, each consisting of 13 super grade 7-wire low relaxation strands of 12.7 mm diameter. Each cable has the area of 1301 mm^2. The concrete strength is f = 40 MPa. Stressing takes place when the concrete is at age 14 days with strength of 32 MPa. The beam is exposed in a near-coastal area. Determine the losses of prestress for this beam. Design data: 4 = 6200 mm², f = 500 MPa, E. = 200000 MPa A, = 2602 mm, f, 1840 MPa, E, = 190000 MPa, Op=1100 MPa = Wo = 18 kN/m 795 650 20 m 1200 300 250 850 Figure 1. Simply supported prestressed concrete beam
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To determine the losses of prestress for the given simply supported posttensioned concrete beam we need to consider various sources of prestress losse... View the full answer
Related Book For
Financial Accounting
ISBN: 978-0078025549
3rd edition
Authors: J. David Spiceland, Wayne Thomas, Don Herrmann
Posted Date:
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