Return to index: [Subject] [Thread] [Date] [Author]

Re: plywood glued to framing

[Subject Prev][Subject Next][Thread Prev][Thread Next]
This thread deserves more research!  A glue that will add to shear wall capacity without the loss of ductility provided by nailing!  The glue needs to deform enough without detaching to equal (or reduce?) the assumed nail slip in the deflection equation.  That given, if such a glue is available then nailing would become a back-up fastener??  Also glues that have this elasticity are...., elastic (!) and therefore do not provide the ductility for energy dissipation?  Does the present nailing system do that successfully anyway?  So, we need a glue that has plastic characteristics under specified conditions, up to which point elastic deformation mobilizes nail slip, and after which plastic deformation in the glue takes over.  (Glass has this characteristic in the long term).  Maybe a 'super-cooled' material is the answer.  Only then would the wall have extra capacity and conform to ductility requirements?

Thor A Tandy P.Eng, MCSCE
Victoria BC
Canada
e-mail: vicpeng(--nospam--at)vtcg.com
----- Original Message -----
To: Seaint
Sent: Tuesday, January 11, 2000 10:34 AM
Subject: plywood glued to framing

Martin W. Johnson has called attention to the "3M 5230 adhesive", a "break
through"
for shear walls!