<!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN"> <HTML> <HEAD> <META content=text/html;charset=iso-8859-1 = http-equiv=Content-Type><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 = Transitional//EN"> <META content='"MSHTML 4.71.1712.3"' name=GENERATOR> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT color=#000000 size=2>Does anyone happen to know, or know = where I can find, approximate typical values for the modulus of elasticity for = spruce both along the grain (the rib) and across the grain (the = soundboard)?   This comes up because the technician installing the new soundboard for = me wants to decrease the width of the new ribs yet leave unchanged the stiffness = of the soundboard/rib assembly.  Obviously, the new ribs will need to be = taller, but how much?  Armed with enough facts, I am confident that I can = figure this out with some practical degree of accuracy.</FONT></DIV> <DIV><FONT color=#000000 size=2></FONT> </DIV> <DIV><FONT color=#000000 size=2>Wasson Kerrick, RPT</FONT></DIV> <DIV><FONT color=#000000 size=2>Owensboro, KY</FONT></DIV> <DIV><FONT color=#000000 size=2><A href="mailto:wkerrick@mindspring.com">wkerrick@mindspring.com</A></FONT= ></DIV> <DIV><FONT color=#000000 size=2></FONT> </DIV></BODY></HTML>