A set of steel reinforcing rods is to be stretched axially in tension to create a tensile stress of 30 ksi prior to being cast in concrete t

Question

A set of steel reinforcing rods is to be stretched axially in tension to create a tensile stress of 30 ksi prior to being cast in concrete to form a beam. Determine how much force will be required to stretch them

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Thiên Ân 4 years 2021-08-22T17:48:46+00:00 1 Answers 46 views 0

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  1. Nem
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    2021-08-22T17:50:19+00:00
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    Answer:

    13.26 kip

    Explanation:

    Taking diameter of the rods as 0.75 in then considering that stress is Force per unit area

    Force is a product of force and area

    F=A\sigma where \sigma is stress

    A=\pi \frac {d^{2}}{4} and substituting this into the equation of force we get

    F=\pi \frac {d^{2}}{4}

    Force, F=30*pi*\frac {0.75^{2}}{4}=13.26 kip

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