Brodhead Pietenpol Association

Original Posted By: Bryce Reid
Subject: Pietenpol-List: Is White Pine Acceptable?

Original Posted By: Dan Yocum

Original Posted By: John Theron
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Original Posted By: "Bill Church"
Best do the engineering on both for comparison. There is a big difference.Also, justify your findings with real load test to verify." ...don't fly any higher then you would like to fall! "--------Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Is White Pine Acceptable?

Original Posted By: "Dortch, Steven D MAJ NG NG FORSCOM"
As the others have said, "it depends".As the builder, if you are selecting your own wood, it is very important that youknow exactly what species you are actually choosing. You mentioned "white pine",but do you know the true species? There are different varieties of whitepine, with different physical characteristics. And, just to make things evenmore complicated, as can be seen in the two attachments, one species of wood (Pinusstrobus) is referred to as Northern White Pine in AC43.13-1B, but also referredto as Eastern White Pine in ANC-18.The white pine species shown in the chart clearly have lower strength values comparedto Sitka; some more significant than others.The short answer is exactly what AC43.13-1B says; "Cannot be used as a substitutefor spruce without increase in sizes to compensate for lesser strength." Whichdoesn't mean that you couldn't build a successful Piet from "white pine";it just means that you would need to know exactly what you are working with, andyou would also need to know how to adjust the sizes of the members to appropriatelyallow for the lesser strength. And you should also do some actual testingof the wood you intend to use, to ensure that it has properties in line withthe published values.Seems like a lot of work to me.Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/4313 ... __________

Original Posted By: "Amsafetyc(at)gmail.com"
Subject: Re: Pietenpol-List: Is White Pine Acceptable?Are you the Bryce who was in Enid, OK this last weekend with Lonnie G?Steve D________________________________________________________________________________