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RE: Strength axis of plywood

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James,

According to footnote pages 6, 7, 8, & 9 in APA Tech note N375, Design
Capacities of APA Performance-Rated Structural-Use Panels, "The strength
axis is the long panel dimension unless otherwise identified."

Regards,
Harold Sprague

> -----Original Message-----
> From:	allen(--nospam--at)xyz.net [SMTP:allen(--nospam--at)xyz.net]
> Sent:	Saturday, January 29, 2000 11:18 AM
> To:	'seaint(--nospam--at)seaint.org'
> Subject:	RE: Strength axis of plywood
> 
> Thank you Roger for you response. However, your response does not answer
> my question. I will ask the question in a better manner.
> 
> What is the definition of the strength axis of a plywood panel?
> 
> Thank you,
> 
> James Allen, P.E.
> 		-----Original Message-----
> 		From:	Roger Turk [SMTP:73527.1356(--nospam--at)compuserve.com]
> 		Sent:	Friday, January 28, 2000 11:44 AM
> 		To:	seaint(--nospam--at)seaint.org
> 		Subject:	Strength axis of plywood
> 
> 		James Allen wrote:
> 
> 		>>UBC 97, Tables 23-II-E-1 7 23-II-E-2 refer to the strength
> axis of plywood
> 		panels. Which is the strength axis? Assuming an 8x4 panel is
> the strength axis
> 		parallel to the 8 foot side or the 4 foot side?
> 
> 		The way I read these tables plywood is stronger when the 8
> foot side is
> 		parallel to the supports. Is this correct?<<
> 
> 		Jim,
> 
> 		Plywood has greater strength when its face grain direction
> is perpendicular 
> 		to the supports.
> 
> 		A. Roger Turk, P.E.(Structural)
> 		Tucson, Arizona
>