Originally Posted by amakarevic
i need to apply a small (0.5"x24"x24") reinforcement plate in an application where the rigidity of the plate is relevant (skylight shaft wall behind drywall onto which to lean ladder -- i don't want the ladder to bust through the drywall alone). i happen to have enough of both OSB and plywood in stock and was wondering which would be stronger and more durable. i tend to thing plywood cause it looks more coherent as opposed to OSB which is little pieces of glued wood chips.thanks
Amakarevic. I'm a little worried here. Your building and wonder about a 1/2 ply strength with a 24" by 24" area 1/2" thick to lean a ladder against.....
Been looking at ply wood for 40 years never saw a "coherent" one.
Put it this way I've been pouring concrete walls for decades. We use the Dayton Superior system that is basic ply forming.
With 3/4 ply drilling 24" OC horizontally and 16"vertically for snap ties with 2by4 whalers horizontally stand ply up and pour a 12 thick in crete wall weighing 4,740 with each side wall effected by 2,370 Pounds in shear and you concerned about what Ply to use to lean a ladder against. .. It doesn't matter at all which ply you use to lean a ladder against at a 24 by 24 OC