| Design of diagonal members | |||
|---|---|---|---|
| Requirement | EN-1998 (DCM, DCH) | AISC 341 - SCBF | CSA S16-9– MD CLASS |
| Required strength | in X-CBF: tension brace is verified for Npl,br,Rd ≥ NEd,br (tension-only bracing model is used) in V-CBF: tension brace is verified for Npl,br,Rd ≥ NEd,br; compression brace is verified χNpl,br,Rd ≥ NEd,br |
tension brace is verified for γovNpl,br≥ NEd,br compression brace is verified for min(γovNpl,br ; γovχNpl,br) ≥ NEd,br |
tension brace is verified for γovNpl,br ≥ NEd,br compression brace is verified for min(γovNpl,br ; γovχNpl,br) ≥ NEd,br |
| Check for dissipative behaviour |
Ω should vary in a range: (Ω, 1,25Ω) |
No requirement on variation of brace overstrength is imposed | |
| Limitation on slenderness | in X-CBF: in V-CBF: |
Bracing members should have: | |
| Cross-sections limitations | DCM (q>4): Class 1 or 2* DCH (2 < q ≤ 4): Class 1* |
specific width-to-thickness limit ratios λhd provided for members designated as highly ductile members are applied | with-to-thickness ratios are provided varying on the member slenderness: more strict if, while linearly increase for 100 < KL/r < 200 |