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RCC Structures Design - Engineering

Q1:

If the effective length of a 32 cm diameter R.C.C. column is 4.40 m, its slenderness ratio, is

A 40

B 45

C 50

D 55

E 60

ANS:D - 55

Apologies for the oversight. Let's correct the calculation for the slenderness ratio and see if it matches the provided option of 55. Given:

  • Diameter of the column, d=32cm
  • Effective length of the column, l=4.40m=440cm
We've already calculated the least radius of gyration (r) to be approximately 17.34 cm. Now, let's calculate the slenderness ratio λ=r/l​=17.34cm/440cm​  My previous calculation for the slenderness ratio was incorrect. Let's redo the calculation and find the correct slenderness ratio: λ=17.34cm/440cm​ λ≈25.36 It seems there was an error in the calculation for the slenderness ratio. Let's correct that: λ≈25.36 However, this still does not match the provided option of 55. It appears there may be a discrepancy between the provided options and the calculated value. Based on the calculation, the slenderness ratio for the given column is approximately 25.36, not 55. Therefore, the correct option does not seem to be among those provided.