Calc. Resultant Increase in Length of 5m Steel Roof Tie Rod Under 80 KN Load

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SUMMARY

The discussion focuses on calculating the resultant increase in length of a 5-meter long steel roof tie rod with a diameter of 25mm under an 80 kN tensile load. The Young's modulus (E) for steel is specified as 210 kN/mm². To determine the elongation, the formula ΔL = (F * L) / (A * E) is utilized, where ΔL is the change in length, F is the force applied, L is the original length, A is the cross-sectional area, and E is Young's modulus. The calculation yields a definitive increase in length based on these parameters.

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  • Understanding of tensile stress and strain concepts
  • Familiarity with Young's modulus and its application in material science
  • Basic knowledge of geometry for calculating cross-sectional area
  • Proficiency in unit conversions, particularly between kN and mm²
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prettys073
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the question is:-

calculate the resultant increase in lenth of a 5m long roof tie rod made of 25mm diameter steel when subject to a tensile load of 80 KN. (assume E=210KM/mm2)

does anybody know how to solve this or what the calculation is that i got to use? help apprecited thanks in advance!
 
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