HomeMy WebLinkAbout06040079 Correspondence
04/10/2006 15:58 FAX 13177383440 DAVIDSON IND -+ RYLAND 19J002
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04/10/06
To whom it may concern,
It is my understanding that concern has been expressed over the practice of nailing roof trusses to non-
load bearing interior walls because of the potential problems if coiling-panition separation occurs Or therC:
is differentiel movement between the truss and the wall from some other cause. Under extremely unusua1
circumstances the truss could pick the wall up off the floor. However, it is much more likely that the
nails used to attach the truss to the wall will pull out (assuming two typical nail gun toenails are used).
Under typice1 residentiel circumstances even if the trusses did pick the wall up, the wall would not add
enough weight to the trusses to cause anything other than a COsmetic problem. Typice1 residential
circumstances would be 8' to 9' wood-frame 2x4 walls with 112" drywall, trusses 24" olc with 20-10-0-6
p.s.!. loading, and typical ceiling construction. In other words, this is not a structural cause for concem
and Wlder most circumstances only has the potential to, in rare cases, cause cosmetic problems.
To avoid any potential problems that can arise in the rare event of ceiling-partition separation we
recommend, but do not require, that the trusses not be attached to these walls Or attached with as flexible
a connection as possible. One way of doing this is a metal angle with II vertically slotted hole to allow
truss movement. Another way is to nail single plated walls to the trusses with II single nail straight up
through the bottom of the waIl top plate at each truss. lbis creates II connectiOn that is capable of
supporting very little vertice1load. We elso recommend that one oithe methods of floating the drywall
corners be used to avoid drywall jom cracks. These methods are discussed in some of the literature
produced by the Gypsum Association.
However, as stated before while we recommend the trusses not be nailed to the non-bearing wells we
have no such requirement, and this recommendation is not to be used in any way to require a framer or
home builder to modify there construction practices.
Jfyou have any questions please feel free to call me. I can be reached at (317) 738-321 1.
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PROB! P.M: Web fromjointJ:!.to
joinl k is broken and/or split. It i.
approximately 1Z-" fromjoint JL 10
the beginning of the damaged area
which is nO longer than .q- " long.
REPAIR: Apply one.:!.' long 2X4 #-a.
Southern Pine scab to ODe side of the
broken web centered on the center of
the damaged ate3_ Nail the scab to the
web with 10d common nails~" ole.
NOTE: One 2X4 Sian. & BII'. SPF or
Hem-Fir scab eacb side may be used in
place of S.P. scab called for on one side:
Wrtb scabs each side nail spacing 1M.
times greater may be used,