iš testéd to specimen of steel 20 mm diameter with a gauge length destruction. It has an extension of 0.25 mm under a load of 80 kN and the load at elastic limit is 102 kN. The maximum load is 130 kN. The total extension at fracture is 56 mm and diameter at neck is 15 mm. Find

iš testéd to specimen of steel 20 mm diameter with a gauge length destruction. It has an extension of 0.25 mm under a load of 80 kN and the load at elastic limit is 102 kN. The maximum load is 130 kN. The total extension at fracture is 56 mm and diameter at neck is 15 mm. Find

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Bars

In civil engineering, bars refer to steel reinforcement bars or rebars. These are structural members primarily used for reinforcement purposes in masonry works. A bar is characterized by its cross-sectional area, which is negligible compared to its length. Bars are usually manufactured by steel which is uniform throughout the length, or by meshing multiple steel wires. Other materials of the bar include carbon steel, glass fiber, carbon fiber, and basalt fiber. The reinforcing bars are coated with epoxy resins and other materials to enhance some of their properties including corrosion resistance.

Question

7) A specimen of steel 20 mm diameter with a gauge length of 200 mm is tested to
destruction. It has an extension of 0.25 mm under a load of 80 kN and the load at elastic
limit is 102 kN. The maximum load is 130 kN.
The total extension at fracture is 56 mm and diameter at neck is 15 mm. Find
(i) The stress at elastic limit.
(ii) Young's modulus.
(iii) Percentage elongation.
(iv) Percentage reduction in area.
(v) Ultimate tensile stress.

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