Q2 (a) A steel cable with nominal diameter 25 mm as shown in Table Q2(a) is used in a construction yard to lift a bridge section weighing 38 kN, as shown in Figure Q2(a). The cable has an effective...


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Q2 (a) A steel cable with nominal diameter 25 mm as shown in Table Q2(a) is used in a<br>construction yard to lift a bridge section weighing 38 kN, as shown in Figure Q2(a).<br>The cable has an effective modulus of elasticity E = 140 GPa.<br>(i) If the cable is 14 m long, how much will it stretch when the load is picked up?<br>(ii) If the cable is rated for a maximum load of 70 kN, what is the factor of safety with<br>respect to failure of the cable?<br>

Extracted text: Q2 (a) A steel cable with nominal diameter 25 mm as shown in Table Q2(a) is used in a construction yard to lift a bridge section weighing 38 kN, as shown in Figure Q2(a). The cable has an effective modulus of elasticity E = 140 GPa. (i) If the cable is 14 m long, how much will it stretch when the load is picked up? (ii) If the cable is rated for a maximum load of 70 kN, what is the factor of safety with respect to failure of the cable?
Table Q2(a): Properties of steel cables<br>Ultimate load<br>Nominal diameter Approximate weight Effective area<br>(Failure load)<br>mm<br>N/m<br>mm2<br>kN<br>12<br>6.1<br>76.7<br>102<br>20<br>13.9<br>173<br>231<br>25<br>24.4<br>304<br>406<br>32<br>38,5<br>481<br>641<br>38<br>55.9<br>697<br>930<br>1260<br>1650<br>44<br>76.4<br>948<br>50<br>99.8<br>1230<br>

Extracted text: Table Q2(a): Properties of steel cables Ultimate load Nominal diameter Approximate weight Effective area (Failure load) mm N/m mm2 kN 12 6.1 76.7 102 20 13.9 173 231 25 24.4 304 406 32 38,5 481 641 38 55.9 697 930 1260 1650 44 76.4 948 50 99.8 1230

Jun 11, 2022
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