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Re: Plywood and Cedar

To: keith@xxxxxxxxxxxxxxxxxxxxxxxx, swiftsolo@xxxxxxxxxxxx
Subject: Re: Plywood and Cedar
From: BDally6107@xxxxxxx
Date: Tue, 30 Sep 2003 15:10:42 EDT
 I just weighed the station 6 bulkhead completed for USA 013.  It weighs 1002 
grams with all hybrid and epoxy applied.  It would be good to get a plywood 
station 6 completed and weighed.

Because the bulkheads are being used like webbing in an "I" beam, the load is 
almost entirely in compression and it's doubtful that plywood would provided 
as strong a vertical column as vertical cedar.  However, If the plywood is 5 
ply and the outer skins are oriented vertically, I think any difference is 
probably insignificant.  Weight and cost would likely be the real factors.  
Those 
milling their own strips from typical lumberyard cedar will likely have a 
number of lower quality strips (appearance wise) and would be foolish to simply 
throw them away and buy an expensive sheet of plywood.  On the other hand, 
those 
buying finished strips may well be better off using plywood as long as they 
are careful to seal all edges (especially around the lightening holes).

Best regards,

Bram
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