[GEN/Model]What do the four types IS, IW, BS, BW mean in Combine Type?

Question

In Section Data > Cold Formed Channel, when I change the Number of Section to 2, there are four types of Combine Type: IS, IW, BS, BW.

What do they each mean?

Answer

"I" and "B" refer to the shape, specifically, "I" stands for "I-shape" (Shape facing the Web), and "B" stands for "Box shape" (Shape facing the Lip).

"S" and "W" refer to the joining method. "S" stands for "Screw", and "W" stands for "Welding".

[Image1] Shape, Splicing Type

[Image 2] Cold Formed Channel