.A 3inch by 3inch square steel guardrail post was hit by a car on one of its side and applieda 1.6 kN force. The base of the post is a ¼ inch thick square steel plate and is supported by four pieces half inch diameter bolts. (1 inch = 25.4 mm) a.Assuming that the bolts received an equally distributed force, what is the shear stress applied to a single bolt? b.If the bottomplate of the post is a steel with astress capacity of 120 MPa, what is the maximum allowable bearing force on the plate? c.Assuming that the post is a solid steel and was hit by a falling solid heavy object from above, what is the maximum load that it can carry?
1.A 3inch by 3inch square steel guardrail post was hit by a car on one of its side and applieda 1.6 kN force. The base of the post is a ¼ inch thick square steel plate and is supported by four pieces half inch diameter bolts. (1 inch = 25.4 mm)
a.Assuming that the bolts received an equally distributed force, what is the shear stress applied to a single bolt?
b.If the bottomplate of the post is a steel with astress capacity of 120 MPa, what is the maximum allowable bearing force on the plate?
c.Assuming that the post is a solid steel and was hit by a falling solid heavy object from above, what is the maximum load that it can carry?
d.If the post is a steel tube withcircular hollow section and an outerdimension of 4 inch by 4 inch, what is the maximum inner diameterif same force was applied?
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