If a wood member is subjected to a bending load, then yes, with some species, grain orientation matters.
The wood in the spars is not subjected to bending loads. At least very little compared to the compressive and tensile load that is placed upon them. Under compressive or tensile loads grain orientation does not matter. Cheers. ----- Original Message ----- From: "Brian and Sue Deveson" <sbdeve...@bigpond.com> To: "KRnet" <kr...@mylist.net> Sent: Thursday, May 24, 2012 11:02 PM Subject: Re: KR> Laminating spars Now that is a good question. I look forward to comments. Brian Bundaberg Australia ----- Original Message ----- From: "Tony King" <tkin...@gmail.com> To: "KRnet" <kr...@mylist.net> Sent: Friday, May 25, 2012 1:05 PM Subject: KR> Laminating spars I'm about to start laminating the timber to form my centre section spars from pieces that are 19mm (3/4") thick. Is the orientation of the laminations significant? I'm not sure why but all the laminated timber beams I've seen have the lamination layer horizontal. I can do this but in this case I'd waste less wood if the laminations were vertical. Does it matter? Cheers, Tony King _______________________________________ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html _______________________________________ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
