When designing a column against buckling, how do you decide weather to use the Johnson or Euler formula in your calculations when computing the critical buckling load?
Derive the elastic lateral torsional buckling formula of a
cantilever I-beam subject to a concentrated load at the end. The
load is applied at the top of the flange.
A circular Euler column with one end fixed and the other pinned
(or hinged or simply-supported) is under a compressive axial load.
Given the length L of the column and bending rigidity EI, what is
the buckling load Pcr ?
1)The stress on the circular footing of 6 m diameter due to
column load is 200 kPa at the level of the footing i.e., z = 0 m.
Calculate the vertical stress at a depth of 2 m, 4 m and 6 m below
the central line of the footing and at edge of the footing. Also,
draw the pressure bulb for 10% intensity of the applied in
conventional graph sheet .
2)There are two borrowing areas ‘A’ and ‘B’...
Consider four identical circular Euler columns under a
compressive axial load with a) one end fixed and the other pinned
(or hinged or simply-supported), b) both ends fixed, c) both ends
pinned (or hinged or simply-supported), d) one end fixed and the
other free. What are the buckling loads Pcr for each one and which
one is the strongest against buckling? Given are: the length L of
the column and bending rigidity EI, ?