Wood grain orientation in a built-up spar

cmyr wrote:
In my effort to learn/remember/practice correct building
procedures,I monitor several wood aircraft design sights. In the
emerauders group,much discussion about using a wingspar that was built
and purchased by another builder. The Emeraud spar consists of 2
laminated built ip beams,w ply intercoastals, and boxed front and rear
w/ply. The spar in question was made with vertical grain wood, and
laminated with the grain perpendicular relative to the wing chord, I
believe the spar caps and laminations should have grain approx.
parallel to the wing chord. If anyone has a definitive answer that may
even prevent an accident go yo yahoo groups,emerauders


You might look at what some of the old timers did--NACA server
http://naca.larc.nasa.gov/search.jsp?No=10&Ne=26&N=17+45+269&Ns=HarvestDate| 1&as=false


strength of one-piece solid, build-up and laminated wood airplane wing beams

Author(s): Nelson, John H
Abstract: The purpose of this report is to summarize the results of all
wood airplane wing beams tested to date in the Bureau of Standards
Laboratory in order that the various kinds of wood and methods of
construction may be compared. ...
NASA Center: NASA (non Center Specific)
Publication Year: 1920=========================(=Lookie here ---1920!!!)
Added to NTRS: 2006-11-06
Accession Number: 93R20355; Document ID: 19930091065; Report Number:
NACA-TR-35



If you are interested--I can give you a blow by blow of how to get
there--or you can write the help desk--as I did.. Jerry