Earlier, Dave Schneider wrote:

A went through the Q1 and Q2 plans this
past weekend. Nowhere in the plans
did I see mention of what weight glass
they are using for the unidirectional
and bidirectional glass.

I believe that you'll find that, unless specified, they want you to use
RA7715 for UNI and RA7725 for BID. The 7725 (which I think is basically
the same as 7525) is about 9 oz and has a twill weave for good drape.
The 7715 (which I think is the same as 7515) is about 7 oz.
Thanks, and best regards to all

Bob K.
http://www.hpaircraft.com