A Note of the Positive Effects of Double-Sided Profiling on the Cupping and Checking of ACQ-Treated Douglas Fir, Western Hemlock and White Spruce Deckboards Exposed to Natural Weathering

Abstract

Machining grooves into the upper surface of wooden deckboards reduces undesirable checking that develops when deckboards are exposed to weather. But profiled boards cup more than unprofiled boards. We sought a solution to this problem and hypothesized that profiling both sides of boards would reduce the cupping of profiled boards. We tested the effects of profile type (Flat, single-, and double-sided profiles) and growth ring orientation (concave vs convex) on the cupping and checking of alkaline copper quaternary-treated deckboards made from Douglas fir, western hemlock, and white spruce. There were significant differences in the cupping of deckboards made from the three different wood species (Douglas fir

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双面压型对经ACQ处理的道格拉斯冷杉、西海麻和白云杉面板在自然风化条件下的拔杯和检验的积极影响

在木制甲板的上表面加工凹槽可以减少甲板暴露在天气中时产生的不良检查。但压型板比未压型板更适合。我们寻求这个问题的解决方案，并假设对板的两侧进行仿形可以减少压型板的杯状。我们测试了型材类型（平面、单面和双面型材）和生长环方向（凹形与凸形）对花旗松、西铁杉和白云杉制成的碱性铜季铵处理面板的拔罐和检查的影响。由三种不同木材（花旗松<白云杉<西铁杉）制成的甲板板的杯形差异显著，凹形生长环方向的甲板板杯形显著少于凸形生长环定向的甲板板。最重要的是，我们的研究结果表明，无论木材种类和甲板的生长环方向如何，双面仿形都会减少甲板的杯状。双面仿形还显著减少了对暴露在天气中的甲板板的检查。我们得出的结论是，对下侧或压型甲板进行压型以形成“平衡”双面板是解决压型（单面）软木甲板暴露在天气中时出现的杯形增加问题的简单方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。