I was installing 3/4″ Advantech T&G floor sheathing last week. Joists were 24″OC. I was fitting a smaller cut panel at the end, about 2′ x 4′ in size. Along the cut edge of the sheet, where it butted against an adjacent sheet, it was sticking up about a half inch.
Maybe it was a tight fit, not sure – but I whacked the panel a few times with my framing hammer to try and seat it – about 6 inches from the edge. Suddenly, the head of the hammer popped straight through the sheet. A clear hole just the size of the hammer head, right through that sucker.
Was this some kind of fluke in their production line, or are these sheets susceptible to this kind of tear through with concentrated point loads?
Replies
How big hammer? Hit it how hard?
I think it might have been just a little tight........
Jim
Edited 11/4/2009 9:21 am ET by JTC1
curious thing about OSB type materials doing that...
or yur one BA dude...
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Take your BFH out of the hole and use a regular framer. If it is that tight, cut it again.>G<
That being said, it always is harder to put a hole in advantech than reg. plywood., always!
Change your screen name to Thumper.
What weight hammer? Sounds like a 28oz tenderizer with an 18" handle.
you strong boy!
Woulda made for some great pictures to post here.
Quantum materiae materietur marmota monax si marmota monax materiam possit materiari?
here's pics. the board tore when i ripped it up.
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OK here's my semi-engineering explanation of what happened:1. you dint reed the directions (they are printed right on every sheet) "Space ALL joints"B). the bow caused by above, induced internal stresses in the piece.III: these stresses were enough to induce shear failure between the layers/strands.∆, being under extreme pressure and shear failure you OSB became like the skin of an over-inflated balloon and failed under a normally resistible impact loading.Lesson learned: A Bigger hammer does not make you a better Carpenter.cut the next piece right..
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