To start, we should clarify that working load, also known as
chain pull
, and tensile strength are not the same. Working load describes the amount of linear pull exerted on a chain by a drive while tensile strength is the amount of force required for that chain to fail.
What is the effective length of a column at both ends fixed *?
Both end fixed: The effective length when both the ends are fixed is equal to . The effective length factor is equal
to 0.5
. When one end is fixed and another end is pinned for a column, the effective length is equal to .
Which of the following is also known as the working load?
9. Which of the following is also known as the working load? Explanation: A column and Strut can never be subjected to critical load
When one end of column is fixed and one end is free effective length is ______?
Explanation: The effective length of compression member when one end is fixed and other end is free is
2L
, where L is the length of the member.
What is meant by buckling?
In structural engineering, buckling is
the sudden change in shape (deformation) of a structural component under load
, such as the bowing of a column under compression or the wrinkling of a plate under shear.
Is type of load affects factor of safety?
Type of load affects factor of safety. Explanation:
Dynamic load
has higher factor of safety as compared to static loading. 3. For cast iron components, which of the following strength are considered to be the failure criterion?
What is buckling factor?
The buckling factor is
the multiplicator of set load when Euler’s critical load of a perfect structure is reached
. E.g. elastic critical buckling load P
e
is determined by: loading a column by compressive force P.
What is the effective length?
Effective length is a critical concept in Structural Design which
relates to ‘the length of a component which is effectively restrained’
. … When designing structural members they can be subject to a number of forces such as Shear, Tension, Compression, Torsion and combinations of these to name but a few.
What is effective length in buckling?
The effective length is
the length between points of inflection (points of zero bending moment) on the buckled shape
. … For members in frames the effective length factor (k
e
) depends on the ratios of the compression member stiffness to the end restraint stiffnesses.
Which formula is used for determining short as well as long columns?
Rankine formula
can be used for short columns as well as long columns.
What is the minimum value of eccentricity provided in columns?
What is the minimum value of eccentricity provided in columns? Explanation: No column can have a perfectly axial load. There may be some moments acting due to imperfection of construction or due to actual conditions of loading. Hence IS 456 -2000, recommend eccentricity of
20 mm
.
Which is code are used in design of steel structure?
BIS CODE
: INDIAN STANDARD for Structural Engineering. Code for practice for general construction in steel.
Why laced column is provided?
Design of Lacings:
For members carrying calculated bending stress due to eccentricity of loading, applied end moments and/or lateral loading, the lacing shall
be proportioned to resist the actual shear due to bending
in addition to that specified above.
How is buckling calculated?
The Euler column formula predicts the critical buckling load of a long column with pinned ends. The Euler formula is
P cr = π 2 ⋅ E ⋅ I L 2
where E is the modulus of elasticity in (force/length
2
), I is the moment of inertia (length
4
), L is the length of the column.
What is beam buckling?
Buckling is
the event where a beam spontaneously bends from straight to curved under a compressive load
. … It consists of a ordinary differential equation for the deflection and a relation that can be used to calculate the force-strain curve before and shortly after buckling.
What is local buckling?
Local buckling is
a failure mode commonly observed in thin-walled structural steel elements
. Even though its effect on their behaviour at ambient temperature conditions is well documented and incorporated in current design codes, this is not the case when such elements are exposed to fire.
