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Re: 16 ga staples for Roof Sheathing

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The new NER-272 is over 50 pages long; it is available from ISANTA, headquarters
in LaGrange, IL. I can get tel. no. for you when I go to APA office on 4/6.

Plywood and OSB grades are APA Rated Sheathing (for non-STR 1) and APA
Structural I Rated Sheathing (for STR 1, available in both OSB and plywood).
STR 1 OSB is identified as Structural 1 Rated in the body of the trademark.  It
has same shear values for shear walls and diaphragms as Structural 1 plywood.

Waferboard is an original form of wood structural panel, with non-oriented
wafers so it has equal stiffness and strength in both panel directions.
Waferboard is made by only one mill (I think) in Canada, rarely seen anymore in
US, and replaced by OSB.

Particleboard is a product not used for structural sheathing, even though there
are tables in UBC which apply to this product. At one time, waferboard was
included as a panel type in the particleboard standard ANSI A208.1, but
waferboard provisions are no longer included in that standard.

Hope this helps.

John Rose, APA/TAcoma

Sam Love wrote:

> Is the new report available from ISANTA or ICBO?  Do you have an address or
> phone number to get it?  Also, John can you clarify for this list server
> what plywood grades tables in the UBC should be used when using OSB,
> waferboard and particleboard?
> Sam Love, P.E.
> -----Original Message-----
> From: John Rose <jrose36(--nospam--at)>
> To: seaoc(--nospam--at) <seaoc(--nospam--at)>
> Date: Friday, April 03, 1998 7:35 PM
> Subject: Re: 16 ga staples for Roof Sheathing
> >The new revised version of National Evaluation Service Report NER-272 is
> now
> >available.  A check can be made against lateral and withdrawal load
> capacity for 8d
> >common nails vs. staples (16 ga., or 15 ga. which are more readily
> available than
> >14 ga.) and fastener schedule revised accordingly, depending on what design
> >condition is being evaluated.  Of course, this means extra (unpaid?) work
> for the
> >structural engineer.