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Steel Secondary Beam Design Settings are explained in detail under this title.

Design

The parameters used in the design are intervened in the Design tab. If

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the option is selected, the coefficient written in the box is used in the design

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. If no mark is placed in the box,

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ideCAD Structural automatically calculates these coefficients and uses them in the design.

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Bracketed

Unbraced length ratio (LTB)

image-20240131-143815.pngImage Added

The ratio of the length between

two elements connected to the element for the respective direction to the entire element length to be used in the lateral torsion buckling calculationFlexural

laterally unbraced length along either flange. If the option is selected, the coefficient written in the box is used in the design calculation.

Bending coefficient (Cb)

The moment correction coefficient is calculated according to the Steel Structures Regulation Equation 9.
image-20240131-144024.pngImage Added

Lateral-torsional buckling modification factor for non-uniform moment
diagrams when both ends of the beams are supported. It is determined according to AISC 360-16 F1-1.

Deflection

border

check limits

image-20240131-144050.pngImage Added

It is the

element

member-based limit value specified in the relevant Steel Structures regulation used in the design. ideCAD Structural not automatically change the limit, such as cantilever beams. The user should change the limit value

must be changed by the user

according to the situations where the

secondary

beam is used.

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After analysis and design the design check window is given in the steel design -

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> secondary beam - details section after analysis and design.

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Next Topic

Steel Purlin Design with AISC 360-16

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