Duct Fabrication - SMACNA DCS - Transverse Joint - Standing S T12
Duct Fabrication - SMACNA DCS - Transverse Joint - Standing S T12
(OP)
With reference to the subject title, I did not understand a passage in the SMACNA Duct Construction Standard Metal and Flexible, Second Edition, page 1.63:
I thought the Standing-S slip/drive has the same length as the duct side it is joining so I did not understand what was meant by maximum intervals. So if the duct side, to be joined with a Standing-S, is longer than 305mm I have to make more than one cleat?
Can someone please explain?
Joint [...] T-12, STANDING S: When using S on all four sides, fasten the slip to the duct [...] at 12" (305 mm) maximum intervals.
I thought the Standing-S slip/drive has the same length as the duct side it is joining so I did not understand what was meant by maximum intervals. So if the duct side, to be joined with a Standing-S, is longer than 305mm I have to make more than one cleat?
Can someone please explain?





RE: Duct Fabrication - SMACNA DCS - Transverse Joint - Standing S T12
If you use S joints on all four sides for anything else , it has to be treated as a slip joint, with fasteners screwed or riveted through it to retain the duct. Otherwise the method is S bar on two sides opposite and drive lock on the other two sides.
B.E.
You are judged not by what you know, but by what you can do.
RE: Duct Fabrication - SMACNA DCS - Transverse Joint - Standing S T12
RE: Duct Fabrication - SMACNA DCS - Transverse Joint - Standing S T12
B.E.
You are judged not by what you know, but by what you can do.
RE: Duct Fabrication - SMACNA DCS - Transverse Joint - Standing S T12