Plates Connecting Beams

Staff,

Solidowrks am beginner in programming, work with metallic structure.
One of the coordinators using Tekla Structures for modeling.
We have the idea of using Solidworks just because some limitations of Tekla, but he has no links as advanced as Tekla.
I'm thinking of starting a venture to create a program that adds links to the profiles.
My idea is to open and edit the pieces to connect to each other with plates welded or drilled as required.
Can someone please give me a light of where to start?
Thank in advance any help.

Regards,
Josano

SolidworksApi macros