Because this seems to be a good idea to best fit for the strength and stiffness demand at different portions of a single member.
Putting different metals together may cause more serious corrosion.
Yes, implicitly as pyw and pyf refer to steel strength for web and flanges which can be different.
Hope to see you soon.
Yes. Hybrid girders are covered by Eurocode 3. Typically the flanges are made from one steel grade and the web another
How about high strength steel of S690 joined to S355 ? Fabricators complained its welding of high strength steel is difficult. High performance steels have many advantages.
Thank you for the sharing, Prof. Chan and Prof. Kwan. That's informative.
We are designing/working with 355wp and 450LO together with very good results and following;
EC 3
AS/NZS 1163:2009
AS/NZS 4792:2006
May help out a sa suggestion.
All the best.
EC3 Covered the use of girders having web and flange made of steel having different yield strengths.
The design firstly must be on definite grade and when another grade is available to mix with the main grade, the thing you need to do is to calibrate the replaced grade with the different grade by fixing the loads in that member of building to find new cross section area and the bars number .
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