STRENGTH OF MATERIALS (10.5)] Please provide a solution to the problem. The answer is already given just provide a solution. Thank you! QUESTION: In a small gantry for unloading goods from a railway waggon, it is proposed to carry the lifting tackle on a steel joist, 24 cm by 10 cm, of weight 320 N/m, supported at the ends, and of effective length 5 m. The equivalent dead load on the joist due to the load to be raised is 30 kN, and this may act at any point of the middle 4 m. By considering the fibre stress and the shear, examine whether the joist is suitable. The flanges are 10 cm by 1.2 cm, and the web is 0.75 cm thick. The allowable fibre stress is 1 15 MN/m² and the allowable shearing stress 75 MN/m². (Cambridge) ANSWER: maximum tensile stress of 124 MN/m² is greater than the allowable stress; maximum shearing stress of 18 MN/m² is less than the allowable stress.
STRENGTH OF MATERIALS (10.5)] Please provide a solution to the problem. The answer is already given just provide a solution. Thank you! QUESTION: In a small gantry for unloading goods from a railway waggon, it is proposed to carry the lifting tackle on a steel joist, 24 cm by 10 cm, of weight 320 N/m, supported at the ends, and of effective length 5 m. The equivalent dead load on the joist due to the load to be raised is 30 kN, and this may act at any point of the middle 4 m. By considering the fibre stress and the shear, examine whether the joist is suitable. The flanges are 10 cm by 1.2 cm, and the web is 0.75 cm thick. The allowable fibre stress is 1 15 MN/m² and the allowable shearing stress 75 MN/m². (Cambridge) ANSWER: maximum tensile stress of 124 MN/m² is greater than the allowable stress; maximum shearing stress of 18 MN/m² is less than the allowable stress.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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[STRENGTH OF MATERIALS (10.5)]
Please provide a solution to the problem. The answer is already given just provide a solution. Thank you!
QUESTION: In a small gantry for unloading goods from a railway waggon, it is proposed to carry the lifting tackle on a steel joist, 24 cm by 10 cm, of weight 320 N/m, supported at the ends, and of effective length 5 m. The equivalent dead load on the joist due to the load to be raised is 30 kN, and this may act at any point of the middle 4 m. By considering the fibre stress and the shear, examine whether the joist is suitable. The flanges are 10 cm by 1.2 cm, and the web is 0.75 cm thick. The allowable fibre stress is 1 15 MN/m² and the allowable shearing stress 75 MN/m². (Cambridge)
ANSWER: maximum tensile stress of 124 MN/m² is greater than the allowable stress; maximum shearing stress of 18 MN/m² is less than the allowable stress.
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