|
Posted by Bobk207 on February 12, 2008, 7:58 pm
> but to answer the question,
> 3/4 plywood gusset 48" long, both sides of the FJ glue and screw...
>
>
>
> > peternoon wrote:
> >> Can someone tell me what is the correct way to reinforce some timber
> >> floor joists, that have been drilled off limits for services, as
> >> follows:
>
> >> Joists are H8.6" x T1.8"
> >> The holes are round, 2" diameter
> >> One hole per joist off limits
> >> But they are close to the span end and are off-centre relative to the
> >> joist height (1" average)
>
> >> If anybody knows of existing material or parts that can be used, I
> >> would appreciate it even more if a web link or company name were
> >> posted on this thread
>
> >> Thanks
>
> > You say you have about a 1.8" x 8.6" piece of lumber that has a 2" hole in
> > it? You don't need to do anything if you are going to use it as a floor
> > joist.
>
> > --
> > Robert Allison
> > Rimshot, Inc.
> > Georgetown, TX
OP-
Per Robert's comment "a 1.8" x 8.6" piece of lumber that has a 2"
hole in it? "
is not in need of repair.... as long as .....
the hole is not in the middle third of the span (& its not since you
state "close to the span end")
and not too close to the end of the span.......how close to the end of
the span? 12"? 6"?
addtionally, if you've still got ~2" of wood from the edge of the
hole to the top or bottom of the joist, you're fine
The hole is not in a zone where bending is a huge issue & you've only
removed 2" of wood.
personally I think some code allowances for holes in joist are a
little too generous
if you insist on a repair, I'd use 2 pieces pieces of 3/4" plywood
10" to 12" long x ~8.6" high (one each joist face; glue & staple or
brad nail, 16 gage)
fwiw, I reinforced an ~ 4" x 6" oval hole in the lower corner of a
4' x 8' shear panel by gluing & stapling a plywood "doubler ring
reinforcer" over the hole. The rectangluar size of the "ring" was ~
12" x 12". Worked fine, hole & reinforcement did not fail when shear
panel was cyclically tested to failure.
cheers
Bob
| 
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap