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RE: Blind connection to roof sheathing
- To: <seaint(--nospam--at)seaint.org>
- Subject: RE: Blind connection to roof sheathing
- From: "Michel Blangy" <mblangy(--nospam--at)satco-inc.com>
- Date: Wed, 24 Feb 2010 12:59:19 -0800
about the epoxy umbrella thingies used for masonry?
Can you put
some flat blocking against the bottom of the sheathing? This would give
you a deeper section to put the screws into.
I am looking for a connector to attach a small galv.
Steel bracket to roof sheathing. Understanding all the implications of
weather and moisture protection and plywood stresses for the
application. I will deal with those a bit later as I am trying to come
up with some ideas for a proposed project. I would still like to find
something if available. The connector will have to be structural with
available values, of course. The bracket will be subject to a tension
force (although fairly small and the sheathing will probably check out)
therefore pull through will be one of the issues. So something with
some sort of washer type of backup would be nice. Others have
suggested a wood screw to the plywood and have justified with calculations,
but I don?t think it is even close to being a good idea. The diameter
is small. The wood screw ideas were #9 so that is the diameter that is
what is being considered at this point.
Any help would be appreciated.
Joseph R. Grill, PE
Verde Valley Engineering, PLLC
2220 Sky Drive
Clarkdale, AZ 86324