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Re: T&G roof diaphragms

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I understand from previous messages (last year from John Rose of APA) that
3M quit making the 5230 product and does not have an approved ICBO report
anymore (old ICBO # 2964).   Since this ICBO report (#1379) requires the 3M
product installed per the #2964 ICBO requirements, doesn't the values become
invalid?   I have called out the 3M 5200 marine product on a project (truss
repair) just now underway so I hope it goes well.   I'm using the adhesive
to supplement the nails with any increase a bonus.

We have shown straight T&G decking okay for small load (~50 plf) using a
free-body diagram and the nailing pattern, however, we are in Zone 3.
Anything more substantial, we use plywood over (be careful with nail lengths
as I know of a school that has nails sticking through the decking)

Peder Golberg, P.E./S.E.
Portland, OR
----- Original Message -----
From: "Chris M. Palmateer" <chrisp(--nospam--at)vlmk.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Monday, October 08, 2001 4:43 PM
Subject: RE: T&G roof diaphragms


> Check out Lock-Deck Laminated Decking (ICBO #1379).
>
> ................................................
> Chris M. Palmateer, P.E.
> VLMK Consulting Engineers
> 3933 SW Kelly Avenue
> Portland, OR  97201
> 503.222.4453 / Fax 503.248.9263
> chrisp(--nospam--at)vlmk.com
> ................................................
>
>
> -----Original Message-----
> From: George Richards P.E. [SMTP:george(--nospam--at)borm.com]
> Sent: Monday, October 08, 2001 4:36 PM
> To: 'seaint(--nospam--at)seaint.org'
> Subject: RE: T&G roof diaphragms
>
> I have never heard that it is not but the loads will be very low, about 50
> plf.  Unless it is a bath room for a park, put PW over the T & G.
>
> George Richards, P. E.
>
> -----Original Message-----
> From: Gina Gobo [mailto:GoboGT(--nospam--at)c-b.com]
> Sent: Monday, October 08, 2001 4:07 PM
> To: seaint(--nospam--at)seaint.org
> Subject: T&G roof diaphragms
>
>
> Does anyone have any information as to whether T&G wood diaphragms are
> accepted in the state of California? Our client has requested 2x6 T&G
> spanning 4ft. Our project is located in the state of California, seismic
> zone 4.
>
> Any information anyone has is greatly appreciated.
>
>
>
> Gina T. Gobo, EIT
> Carter & Burgess, Inc
> Facilities - Structural Engineering
> Seattle, WA
> Ph. 425-822-7096
> Fax 425-822-7246
> gobogt(--nospam--at)c-b.com
>
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