Solved problem 4-2 for estimating the design compressive strength for the W section under compression load. An Introduction to ratio λ^2 is illustrated.
The bisection method can be done by taking the average value of the horizontal distance between points of brackets, and then substitute it in the function.
In the post steel columns and Euler’s formula-part 2. The discussion includes the different shapes of steel columns & how to derive Euler’s formula, and lately the modes of failures for columns.
Estimation of max and min-Moment of inertia for a section. How to derive the The expression for max and min-moment of inertia. The equation of principal angle θp