Question

A
6-m long column is made of a steel girder W200x52 (see the section
properties in the last page). It is loaded concentrically through
the centroid of the section. Given that the steel has the elastic
modulus Est = 210 GPa and the yield stress Y = 340 MPa. Determine
the critical load (Euler Buckling Load, Pcr) where the support at
the column ends are fixed-free support

Answer #1

For a 8m long column whose cross sectional dimensions are 0.1m x
0.4m, determine the allowable load using a safety factor of 2.5.
The column is welded at both ends. Its yield stress is 250 MPa and
its modulus of elasticity is 210 GPa. using Euler Formula or J. B.
Johnson Formula.

Determine if the following column is long or short, and then
determine the critical load on a steel column having a rectangular
cross section, 12mm by 18mm and a length of 250 mm. It is fixed on
both ends and made from a steel that has the following properties:
E= 209 Gpa and sy = 290 Mpa.
Slenderness ratio = ___________ Cc = _______ Long or short
column = ___________ Critical load = ____________________
Newtons

A hollow circular steel column 2m long and outer diameter 200
mm carries an axial load of 325 kN. If the compressive stress is
150 MPa, lateral strain for external diameter is is 0.000325 and
Poisson’s ratio is 0.3, find the minimum wall thickness required
for the column. Also calculate the shear modulus for the material
of the column. Take E = 210 GPa.

A box section of length L = 6 m and cross-sectional dimensions
of a = 54mm, b = 32 mm has wall thickness t = 3 mm. This box
section is used as a part of structure, and it is subject to a load
along its longitudinal axis. The K factor for the end conditions of
the column is 0.25 . Calculate the buckling load of the column,
which is made of a material with an elastic modulus of E...

During construction, field tests were conducted to
assess the suitability of the column to withstand a safe buckling
load of 2.5 kN assuming a factor of safety 4 using two different
hollow columns made up of steel and concrete. Both columns have
same cross section but varying length and different support
conditions. Steel column of length 3 m having external diameter 40
mm was tested with one end fixed and the other end hinged, when
subjected to a compressive stress...

1: During construction, field tests were conducted to assess
the suitability of the column to withstand a safe buckling load of
2.5 kN assuming a factor of safety 4 using two different hollow
columns made up of steel and concrete. Both columns have same cross
section but varying length and different support conditions. Steel
column of length 3 m having external diameter 40 mm was tested with
one end fixed and the other end hinged, when subjected to a
compressive...

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