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RE: "Flitch-plate" design

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Bill -
 There is a flitch beam discussion in the "Timber Design and Construction
Handbook"(1st Edition?), prepared by the Timber Engineering Company and
published by McGraw-Hill. 


Charlie Canitz
> ----------
> From: 	Bill Allen, S.E.[SMTP:billallen(--nospam--at)earthlink.net]
> Reply To: 	seaoc(--nospam--at)seaoc.org
> Sent: 	Friday, May 15, 1998 8:20 AM
> To: 	seaoc(--nospam--at)seaoc.org
> Subject: 	RE: "Flitch-plate" design 
> 
> I have done a cursory search in my two main timber reference texts:
> 
> Timber Construction Manual, AITC, 3rd ed.(don't laugh, I know I'm an old
> geezer)
> Design of Wood Structures, Donald E. Breyer, 3rd ed.
> 
> I could find no references to "flitch plates" or any other connection with
> metal side plates used for the purpose of resisting bending moment.
> 
> Regards,
> Bill Allen
> 
> -----Original Message-----
> From: Ed Marshall [mailto:elmarshall(--nospam--at)HASimons.com]
> Sent: Friday, May 15, 1998 7:29 AM
> To: 'seaoc(--nospam--at)seaoc.org'
> Subject: RE: "Flitch-plate" design
> 
> 
> There is also a discussion in  ASCE's "Wood Structures, A Design Guide
> and Commentary", 1975, Section 8.6.3.2:
> 
> "... defined as 'a vertically laminated beam composed of one or more
> pieces of timber with one or more metal plates on the sides or between
> the timbers and fastened to each other so as to act as one unit ...  at
> the beginning of this century, flitch beams were quite common and
> accepted in building construction everywhere' ... yet the need to
> predrill both lumber and steel plate, to allow bolting, made the
> assembly of flitch beams time consuming, unpopular, and uneconomical in
> light of advanced technology."  It then goes on to discussion testing of
> nailed assemblies using sheet steel rather than plate steel.
> 
> By the way, I've seen a least a couple to text books that included
> flitch plate beam design in them, but don't have them at hand.
> 
> Ed Marshall, PE
> Simons Engineering
> Atlanta
> 
> > -----Original Message-----
> > From:	Bill Allen, S.E. [SMTP:billallen(--nospam--at)earthlink.net]
> > Sent:	Friday, May 15, 1998 9:46 AM
> > To:	seaoc(--nospam--at)seaoc.org
> > Subject:	RE: Need "Flitch-plate" design example
> >
> > In this entire thread, this post is the only one which contains a
> > reference
> > to a published (as opposed to "home-brew") solution. I would be very
> > interested in reviewing it. If it is not too much trouble, please mail
> > a
> > copy to:
> >
> > Bill Allen
> > P.O. Box 7347
> > Laguna Niguel, CA 92607
> >
> > Thanks,
> > Bill
> >
> > -----Original Message-----
> > From: John Buchanan [mailto:jjb(--nospam--at)scruznet.com]
> > Sent: Thursday, May 14, 1998 1:05 PM
> > To: seaoc(--nospam--at)seaoc.org
> > Subject: Re: Need "Flitch-plate" design example
> >
> >
> > At 11:55 AM 5/14/98 -0700, you wrote:
> > >My client does not want to remove and replace an existing 4x16 DF #1
> > Beam
> > >which will span 18'-6" once the center column is removed. The roof
> > trib on
> > >the member is approximately 12'6". The beam is continuous over this
> > support
> > >(that's being removed) and the member calculates about 22%
> > overstressed in
> > >bending for the 18' span.
> > >He has asked if I could design him a Flitch Plate with 1/4" steel
> > sideplate
> > >and a 1/4" x 3" leg to rest the existing patio framing at one side.
> > >I have not designed one before and am not really sure how to go about
> > it. I
> > >assume it is similar to a composite beam design, yet the plate is
> > only on
> > >one side and is to be lagged to the face of the existing beam.
> > >
> > >If anyone has a sample of an analysis that I can follow, I'd
> > appreciate it.
> > >
> > >Thanks
> > >Dennis Wish PE
> > >
> >
> > See section 10.35 of a book called "Wood engineering and Construction
> > Handbook"
> > Keith F. Faherty and Thomas G. Williamson
> >
> > McGraw Hill
> >
> > I Can send you a copy of the chapter next week if you'd like
> >
> > John Buchanan
> >
> 
> 
> 
> 
> 
>