350 900 mm 1000 mm ² 1350 mm² 2 690 650 Figure-1 60 750 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 0 Stress (MPa

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350 900 Mm 1000 Mm 1350 Mm 2 690 650 Figure 1 60 750 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 0 Stress Mpa 1 (72.71 KiB) Viewed 25 times

350 900 Mm 1000 Mm 1350 Mm 2 690 650 Figure 1 60 750 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 0 Stress Mpa 2 (53.5 KiB) Viewed 25 times

350 900 mm 1000 mm ² 1350 mm² 2 690 650 Figure-1 60 750
2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 0 Stress (MPa) Vs Strain for prestressing steel 1710 1000 0.005 0.01 0.015 Figure-2 0.02 0.025 0.03 1900 0.035
Question-2: a) Compare the accurate Mu with Mu calculated using (a) approximate Opu as prescribed by Clause 8.1.7 in AS3600 for bonded tendons. b) What is the value of Mu, if the prestressing tendons have no bond with the concrete as prescribed by Clause 8.1.8 in AS3600 for unbonded tendons.