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SC001 BASE STORY Section dimensions do not conform toTBDY Table 9.3.

Cross-section conditions of steel structural system columns with high ductility level and normal ductility level Width-to-thickness ratios of highly ductile beams and moderately ductile beams are checked in accordance with TBDY Table 9.3. The cap width/thickness and body height/thickness ratios of steel elements should not exceed the AISC 341-16 Table D1.1 and TBDY Chapter 9. Limit values of Width-to-thickness ratios λ _hd or λ _md limit value are given in AISC 341-16 Table 9D1.31.

For detailed information, you can review the title titles below.

TBDY 2018 Controls for Steel Carrier System Types

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Width-to-Thickness Ratios for SMF per AISC 341-16 with ideCAD

Limiting Width-to-Thickness Ratios for Compression Elements for Moderately Ductile Members per AISC 341-16 with ideCAD

Solutions:

• The cross-section of the steel element whose name and floor are given can be changed.

• When choosing a steel column Steel beam cross-section , a cross-section selection can be made to reduce the header width/thickness or body height/thickness ratio.This cross-section condition is not met in the majority of my HEA type profiles. For this reason, another type of profile can be chosen.

• If the structure it is suitablepossible, the a moderate ductility level can be resolved to a limited extentselected.

TBDY Table 9.3 AISC 341-16 Table D1.1 is given below.

Limiting Width-to-Thickness Ratios for Compression Elements for Moderately Ductile and Highly Ductile Members
Description of Element	Width-to- Thickness Ratio	Limiting Width-to-Thickness Ratio		Example
		λhd Highly Ductile Members	λmd Moderately Ductile Members
Flanges of rolled or built-up I-shaped sections, channels and tees; legs of single angles or double-angle members with separators; outstanding legs of pairs of angles in continuous contact	b/t
Flanges of H-pile sections per Section D4	b/t	not applicable
Stems of tees	d/t
Walls of rectangular HSS used as diagonal braces	b/t
Flanges of boxed I-shaped sections	b/t
Side plates of boxed I-shaped sections and walls of built-up box shapes used as diagonal braces	h/t
Flanges of built up box shapes used as link beams	b/t
Webs of rolled or built-up I shaped sections and channels used as diagonal braces	hw/t
Where used in beams or columns as flanges in uniform compression due to axial, flexure, or combined axial and flexure: Walls of rectangular HSS Flanges and side plates of boxed I-shaped sections, webs and flanges of built-up box shapes	b/t h/t
Where used in beams, columns, or links, as webs in flexure, or combined axial and flexure: Webs of rolled or built-up I shaped sections or channels [b] Side plates of boxed I-shaped sections Webs of built up box sections	h/tw h/t h/t	For Ca ≤ 0.114 For Ca > 0.114 where	For Ca ≤ 0.114 For Ca > 0.114 where
Webs of built-up box sections used as EBF links	h/t
Webs of H-Pile sections	h/tw	not applicable
Walls of round HSS	D/t

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iconsSymbols

λ_hd : Cross-section condition limit value for elements with high ductility level Limiting slenderness parameter for highly ductile elements
λ_md : Cross-section condition limit value for elements with limited ductility level Limiting slenderness parameter for moderately ductile elements

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