Q4 Figure 4.1 shows a cast-iron bearing block that is to be bolted to a steel ceiling joist and is supporting a gravity

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Q4 Figure 4 1 Shows A Cast Iron Bearing Block That Is To Be Bolted To A Steel Ceiling Joist And Is Supporting A Gravity 1 (95.24 KiB) Viewed 37 times

Q4 Figure 4.1 shows a cast-iron bearing block that is to be bolted to a steel ceiling joist and is supporting a gravity load of 18 kN. Bolts used are M24 ISO 8.8 with coarse threads. The joist flanges are 20 mm in thickness, and the dimension A, shown in the figure is 20 mm (neglect any washer). The modulus of elasticity of the bearing block is 135 GPa. You are responsible to determine the wrench torque required if the fasteners are lubricated during assembly and the joint is to be permanent. You are required to design the suitable bolt to be used, and perform safety analysis to determine factor of safety based on yielding, overload and joint separation. You are also required to draw the bolt with appropriate dimensions. 0 18kN Figure 4.1 A cast iron bearing block (25 marks)