Question

The figure shows a steel bearing block that is to be bolted to a steel ceiling joist with 20 mm thick flanges, supporting a gravity load of 40 kN. M24 ISO 8.8 coarse threaded bolts are used with 4.6-mm-thick steel washers under the bolt head and nut. The dimension A, marked in the figure is 22mm. (a) Find the wrench torque required if the fasteners are lubricated during assembly and the joint is to be permanent. (b) Determine the factors of safety guarding against yielding, overload, and joint separation. (c) If the joint is oversized, and it is decided to use only two bolts instead of four, recalculate the factors in part (b) and comment.

Answer 1

Hey dear please provide the figure of the block as mentioned in the question. Without figure the problem can't be solved. So I humbly request you to upload the question with figure so that you can be helped with the solution. Thank you.