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Wood signage

Sandman

New Member
I'm going to disagree with everyone that said ACM is not strong enough. by itself. I installed a double sided sign where the upper part was 2 sheets to make an 8' x 8' panel then a 2 foot gap with a 5' x 14' bottom panel. I installed wooden stringers onto steel wide flange beams 30 feet tall. I fastened the panels with good sized pan head screws around the perimeter and also had a few cross wise stringers. The sign took a direct hit from an F1 to F2 tornado which ripped the roof off their steel building and twisted the steel poles a bit, but all the panels stayed intact.
 

Billct2

Active Member
but you didn't use 3mm ACM by itself which is what they are referring to, you had stringers, as others recommended.
 

Sandman

New Member
Who wouldn't use stringers with ACM? To me that's a no brainer. Heck, as lousy as MDO is now, I would't install any permanent MDO sign without at least a perimeter frame. That stuff can curl like a Pringle. potato chip
 
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