RHS sections and K-joint, both diagonal under compression and material S420MH

[KMSC]

Can you clarify me, if Robot is calculating correct, see attched pngs, in situation we have K-joint with both diagonal under compression force and secondly I think that Robot is not notice the reduction factor 0.9 when using higher steel quality than S355 !?

I think that in both situation Robot is not calculationg correct or am I missing something ?

[Artur.Kosakowski]

I'm not sure if I understand your 1st remark correctly. Which other formulas do you think should be used?

For the reduction factor - thank you for indicating this situation. I have asked the development team to investigate this issue.

[KMSC]

Hi

Attached is Cidect's Rhs joints and there is shown K-joint with both diagonals in compression as "X" joint and "footprint" with combined of two braces? Which formula (X, Y, K ?)  is right for these kind of  situation ?

What about table 7.15 (EN 1993-1-8) and type of joint "All bracing members should be either compression or tension" ?  But we have not braces on the other side of chord...

[Artur.Kosakowski]

I see what you mean. Currently in such situation Robot assumes the formulas as for the K type but I think the use of the X ones instead makes sense. It would be good to know what other people on the forum think