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Re: Glulam Beams

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24F-V8's are long -- 3-4 weeks -- lead time here too.

At 04:31 PM 12/15/99 -0800, you wrote:
>Hi James,
>The last time I ordered 24 FV8 conbination beams with specific camber
>requirements I had a long lead time,  4 weeks + to get the beams  ( several
>hundred feet of beams ).  And when I needed to replace just one of these
>beams ( how does it go.... measure once, cut twice ?) ,  it was 8 weeks due
>to a lack of a truck going from the Mill to the lumber yard.
>If it is possible to be a little flexible with the beam specification,
>there are several beam products which have been taylored to the residential
>market.  These are sold to lumber yards more agressively and have shorter
>lead times ( GP-3000 beams are an example )  They tend to be without camber
>or have very little camber.  Although you can get them with any camber you
>require for your design.  The lumber yard will try to sell it to your
>contractor as an alternate,  and lead time will be the hook.
>I don't like much camber in residential applications and usually specifiy no
>camber if it is going to be framed in like a header.  But, remember that
>almost all solid lumber beams will have a crown which can be greater than
>standard camber on a GLB for short spans.  So IMO it's not that big a deal
>to have a header with 1/4" +/- of camber or crown.
>Robert Shaffer, PE
>Santa Cruz, CA
>> I have a few questions:
>> 1. Has anyone found 24F-V8 DF/DF glulam beams 5.125 wide by 12 and 15
>inches deep to be special order items, i.e. long lead items?
>> 2. What is your experience with camber? Do you typically specify camber?
>> 3. I have a project with simple span window headers and one case with the
>glulam header extending beyond the exterior building line as a cantilever to
>support a roofed entry. I spec'd a 24F-V8 cambered to be installed upside
>down so deflections would be minimized and be apparent under deadloads. What
>is your opinions about this installation.
>> 4. I used the same spec. 24F-V8 and cambered for the simple span headers,
>5 feet maximum span, and was informed that camber is never used for this
>type of installation. Opinions, please.
>> Thank you.
>> James Allen, P.E.
Debby Hight
Triad/Holmes Assoc.
P.O. Box 1570
Mammoth Lakes CA 93546
       -5619 fax