Excerpt from Timber Framing The results of this experience and study are presented in the following pages. As explained in the introductory chapter, this volume is in no sense a text-book, and does not cover equally all phases of timber-construction. Its many shortcomings are realized, but it is hoped that the contents may be of some benefit to those who may have occasion to design or construct timber-framing.
With some of the theories advanced, and conclusions drawn, there may be differences of opinion. 1 am frank to state that certain of these conclusions may have to be modified in the light of future tests. It is always unwise to attempt to extend the results of tests too far. How ever, until such further tests are made, it is imperative that working-values be established for present use. The best that can be done under those circumstances is to use the most reasonable theory that can be found, utilizing the available tests as a guide. This method is certainly better than a blind guess, or a rule-of - thumb method. As an illustration of the condition just mentioned, the present method or methods of designing bolted joints may be cited.
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