This message is created by specifying the element name and floor on which it is located at the beginning of the report.
For example,
TRS001 BASE STORY Slenderness check failure.
Slenderness control under the influence of axial force, tensile force and axial pressure force in steel truss design according to TBDY 2018, Design, Calculation and Construction Principles of Steel Structures (GKT and YDKT), AISC 360-16 (ASD and LRFD) or EN 1993-1-1 regulations It is done by taking into account the buckling conditions.
In TBDY 2018 and ÇYTHYE 2016, it was stated that the slenderness ratio of pressure elements should not exceed the limit value of KL/i ≤ 200.
In ÇYTHYE 2016 Chapter 7, it is stated that the slenderness ratio of elements under the influence of axial tensile force should not exceed the limit value of KL/i ≤ 300.
ideCAD Structural automatically controls the slenderness ratio according to axial tension and pressure conditions.
Possible Solutions:
If the upper heads of the trusses whose name and floor are given do not provide the slenderness ratio, a brace system can be created to shorten the lateral retention lengths of the upper head of the trusses. As the element size decreases, the slenderness value will decrease.
If the lower headings of the trusses whose name and floor are given do not provide the slenderness ratio, a stability element can be defined to shorten the lateral retention lengths of the lower heading of the trusses. As the element size decreases, the slenderness value will decrease.
The truss member cross-section size can be increased.
By changing the shear mesh type, an element that is under axial pressure in the support area can be switched to axial tension.
icons
K: Buckling coefficient
L: Length of the element without lateral restraint
i: Radius of inertia
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