Connection of member with different steel grade

[intania]

Hi all,
Where can I find the information about the connection of memeber with using different steel grade? because I'm gonna design the bolt connection of built-up cold formed steel section (fy = 450 Mpa) and have to use the gusset plate (fy= 245 Mpa)in this connection to join to other member. I'm worried about the different of strain due to different of fy value and it will effect on the behaviour of connection or not?
Thank in advance
Intania

 

[Ron]

Itania...you're probably over-analyzing the strain compatibility issue. Compensate for differences using different section properties (most notably thickness of gusset plate)to achieve greater compatibility if it is necessary.

 

[ishvaaag]

Other than corrossion and since the connections are usually designed element pere element each part will be designed in accord with its characteristics. That is, if structural plate or angle or whatever, structural, and if thin members, according to one sutitable code for such.

 

[intania]

Thnanx all,
It mean I design to follow the suitable code will be alright, right?

 

[ishvaaag]

So I think.

 

[Dinosaur]

It would seem to me that you could just compensate by increasing the thickness of the Grade 36 splice plates. Let me know if I am missing something.