For a steel member in tension, the permissible stress in axial tension is given by
0.6 fy
Steel Member Axial Tension Permissible Stress
When designing steel structures, engineers must ensure that the stresses experienced by the members under load do not exceed safe limits. These limits are known as permissible stresses.
For a steel member subjected to axial tension (pulling force along its axis), the permissible stress is a critical design parameter. This value is typically based on the material's yield strength, denoted as $f_y$. The yield strength is the stress at which the steel begins to deform permanently.
Design codes and standards specify safety factors to prevent failure. For axial tension in steel members, a common value for the permissible stress is taken as 60% of the yield strength.
Therefore, the permissible stress in axial tension for a steel member is generally calculated as:
Permissible Stress = $0.6 \times f_y$
This means that the actual stress induced in the member due to the tensile load should not exceed $0.6 f_y$ to maintain a sufficient safety margin against yielding and potential failure.
Important Questions from Tension Member
The following are the statements about lug angle used to connect heavily loaded tension member to gusset plates.
(i) The length of end connection is reduced
(ii) By using lug angles there will be saving in the gusset plate
(iii) Cost of connection increases due to additional fasteners and angle required.
A structural member subjected to tensile force in a direction parallel to its longitudinal axis is generally known as
When the length of a tension member is too long:
The allowable stress in axial tension is generally kept less if the thickness of the member is more than
A single angle in tension is connected by one leg only. If the areas of connecting and outstanding legs are respectively a and b, then what is the net effective area of the angle?
A) \(a-\frac{b}{1+0.35\times\frac{b}{a}}\)
B) \(a+\frac{b}{1+0.35\times\frac{b}{a}}\)
C) \(a-\frac{b}{1+0.20\times\frac{b}{a}}\)
D) \(a+\frac{b}{1+0.20\times\frac{b}{a}}\)
