3. A wrought iron rod is under a compressive load of 350 kN. If the permissible stress for the material is52.5 N/mm?, calculate the diameter of the rod.[Ans. 95 mm]4. A load of 5 kN is to be raised by means of a steel wire. Find the minimum diameter required, if thestress in the wire is not to exceed 100 N/mm².[Ans. 8 mm]5. A square tie bar 20 mm x 20 mm in section carries a load. It is attached to a bracket by meansof 6 bolts. Calculate the diameter of the bolt if the maximum stress in the tie bar is 150 N/mm2 and inthe bolts is 75 N/mm2.[Ans. 13 mm]

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3. A wrought iron rod is under a compressive load of 350 kN. If the permissible stress for the material is 52.5 N/mm2, calculate the diameter of the rod. [Ans. 95 mm]

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter3: Transient Heat Conduction

Section: Chapter Questions

Problem 3.4P

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Concept explainers

Stress transformation

The term stress indicates the measure of internal forces that develop due to an external force's application on an object. When a specific external force is applied to an object, internal stress generates in the material. The value of stress can obtain by taking the ratio of the externally applied force and cross-sectional area of the object. There are different types of stress depending on the type of external force.

Question

3. A wrought iron rod is under a compressive load of 350 kN. If the permissible stress for the material is
52.5 N/mm?, calculate the diameter of the rod.
[Ans. 95 mm]
4. A load of 5 kN is to be raised by means of a steel wire. Find the minimum diameter required, if the
stress in the wire is not to exceed 100 N/mm².
[Ans. 8 mm]
5. A square tie bar 20 mm x 20 mm in section carries a load. It is attached to a bracket by means
of 6 bolts. Calculate the diameter of the bolt if the maximum stress in the tie bar is 150 N/mm2 and in
the bolts is 75 N/mm2.
[Ans. 13 mm]

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