[Land Locked]

Originally Posted by mr henderson

It's my understanding that RHS means rectangular hollow section (just as CHS means circular hollow section)

Therefore ERW in square form is just a type of RHS. Maybe ERW is made in a way that isn't suitable for the thicker sections?

So, when I look in the tube details appendix in Chris's book and see that RHS is specified for all the square tubes, I assume that means ERW RHS because that is what is available in the 16 gauge that is appropriate for this type of chassis.

I am using ERW, BTW. If I lived somewhere where ERW in 16gauge was not available, then I would use whatever was available (as long as it wasn't outrageously heavy) and not worry about it.

Basically what seems to be important is that the wall be 1.6mm or thereabouts?