Rule Of Thumb For Fillet Weld Size

[Veer007]

Hey guys
This may sound silly,
If forces are unknown, is this a good practice to determine fillet weld size by the below table? Also, fillet leg and fillet size are the same?

Thanks in advance!!

 

[Veer007]

So the a plate is welded central in the HSS tube And then using bolts that plate is fastened to the gusset plate is that right ? Also how is the HSS section loaded when in position?

Right and This HSS going to support a CMU wall over the opening.

Thanks in advance!!