Steel Column Design Settings
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are explained in detail under this title. After completing the steel column modeling
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, double-click on the element to enter its properties.
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Two new sub-tabs
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, “Releases / Partial Fixity” and “Design,” appear in the steel column setting menu. These tabs contain adjustments for analysis and
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ASCE 7-16
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design
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.
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Releases / Partial Fixity
In the Releases tab, end releases and spring values
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can be entered at the starting and ending points of the element.
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Override end releases  This command is activated by defining user-defined end releases. |
I-Release  If the axial force for the starting point of the element 2-direction shear force, 3-direction shear force, torsion, 2-direction moment, and 3-direction moment are indicated, the corresponding force will be 0 at the starting point. |
J-Release |
 For the |
endpoint of the element, axial force, 2-direction shear force, 3-direction shear force, torsion, 2-direction moment, and 3-direction moment are indicated, and the corresponding force will be 0 at the starting end. |
Spring values - I |
 The spring coefficient is entered for the starting point of the element. Units can be changed by clicking the right button in the box. |
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Spring values - J  The spring coefficient is entered for the |
endpoint of the element. Units can be changed by clicking the right button in the box. |
Design
The parameters used in the design are intervened in the Design tab. If a mark is placed in the box, the coefficient written in the box is used in the design. If no mark is placed in the box,
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ideCAD Structural automatically determines these coefficients and uses them in the design.
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K Major
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Effective length factor for major axis
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K Minor
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Effective length factor for minor axis
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Unbraced length ratio (Major)
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The ratio of the length between two elements connected to the element in its strong direction to the entire element length
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Unbraced length ratio (Minor)
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The ratio of the length between two elements connected in the weak direction to the entire element length
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Laterally unbraced length ratio(LTB)
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The ratio of the length between laterally unbraced length along either flange
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The lateral-torsional buckling modification factor (Cb )
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Lateral-torsional buckling modification factor for nonuniform moment
diagrams when both ends of the segment are braced. It’s determined according to AISC 360-16 F1-1.
Control is given in the steel design - column - details section after analysis and design.
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After analysis and design, the design check window is given in the “Column design → Column details” section.
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