Design Of Tension Members

[haysian]

If the connections is welded in roof truss, does it have tensile rupture stress?

 

[BulbTheBuilder]

Yes, I would refer you to AISC 360-14 Chapter J4 (page 16.1-128) “Affected elements of members and connecting elements.”

 

[haysian]

So I need to solve for the yielding and rupture of the steel? But it is often to have rupture in welded area rather than the steel itself?

 

[BulbTheBuilder]

But it is often to have rupture in welded area rather than the steel itself?

Under sufficiently extreme conditions, any material will ultimately yield and rupture.

So I need to solve for the yielding and rupture of the steel?

Yes, you have to solve both. This image makes it easier to visualize the flow of stresses. And yes, it is an image for block shear, but remember, block shear is shear +tension (Ref J4-5)

Back to your subject matter, J4-1 is for tensile yielding and J4-2 is for tensile rupture. Ae has been defined in section D3 and note, Ae is not limited to steel members with holes, bolted connections.

 

[haysian]

How about for trusses without gusset plates?

 

[SWComposites]

You need to check all possible failure modes.

A sketch of what you are trying to analyze, along with a list of checks you are doing, would help get better answers.