The most common mistakes in connection design and how to avoid them

We picked some of the most common but still not easy-to-understand questions the users of IDEA StatiCa Connection could come to. And we decided to bring answers in this video, to show you how to improve your connection design knowledge to avoid mistakes in your daily work with the software.

Agenda:
- What is the correct position of forces?
- Which model type is the right one?
- Why do I get bolt errors if the 3D scene looks well?
- Why can’t I cut or use the splice operation on my stub?

[thepredator]

what about the origin of axes of coordinates when defining bolt groups of inserting dxf stiffening plates. there is no indication of this center of coordinates. very unpleasant! if the stiffening plate has a complicated geometry, one will find himself in a world of hurt. too bad, you did put the work in this.

[TotallyMotivationalOfficial]

Im still confused regarding node and bolts when it will be used

[alikamal]

In minute 10:45, you show that, by shifting a shear force to the real hinge location, we will have a positive moment at the support. So my question is, will idea statica take this positive moment into a consideration? In other words, will Idea statica involve that weld which connects the stub to the column in design calculation? I mean will idea statica check that can the weld of a stub resist the positive moment that exists due to shifting a shear force to the hinge location? Thank

[jordanhernadi]

The presented example is wrong for the first question. The column is stiff, but if you have a full depth extended beam-to-girder shear tab the eccentricity could be much bigger, while the bolted connection is almost pinned. That means the vertical force will overload the girder by twisting it!

[harrywirtube]

I have the question : the value inserted in LOAD EFFECT (LE), is it for Service Case (SLS) or Ultimate Case (with loading factor, ULS) ? Thank fo the responses.

[RostonMathias]

very informative !! Keep up the good work Cheers!

[belkahlahamadi]

Hello can you perform a bearing connection of a truss with double angles and gusset on multiple combinaisons imported from a structural software thanks

[amrabdullah]

hello, thanks for the explanation. I have a question please.
how do I check the stresses ?
IDEA, provides the equivalent stress (Von-Mises) and I define the material based on the uni-axial tensile test multiplied by a safety factor.
is it ok to compare both results ?
if the equivalent stress is larger than the allowable stresses, then it is unsafe ?
and in this case i dont need to check the strain limit given by 5% as per the EC ?

[gilARENASbert]

I have question regarding model type selection between N-Vy-Vz and N-Vz-Vy-My-Mz.
In webinar it's said that while using the N-Vy-Vz model type the program consumes some bending moment from the beam. But some value of bending moment remains or what ? How much does it consume, what approach is used inside the program during this type of analysis?
I'm asking that because now I'm designing hinged-type connection of the beam and the results are totally different while using this two model types. It would be great if you can take a look at my connection to clear up doubts

[Structure-Dubai]

hi sir, why i get singularity error during analysis?