Over the past few years, the large outdoor fire problem has been a growing concern throughout the world. It is recommended to clear the combustibles around homes and within communities to avoid potential loss of properties, as firebrand shower ignition is a dangerous threat. One of the common combustibles around homes is mulching materials. A reduced-scale experimental protocol was developed to study ignition of mulching materials by firebrands and resulting impact to adjunct wall assemblies. Reduced-scale experimental results were compared with full-scale experimental results. Specifically, two trends were of interest in the comparisons. First, the ranking of the ease of ignition for various mulch types from exposure to firebrand showers. Second, if a given mulch type ignited from exposure to firebrand showers, was the resulting mulch bed fire able to ignite the adjacent wall assembly. The reduced-scale experimental results captured some of these trends observed from full-scale experiments but not completely. The findings still suggest that the reduced-scale experiments may give insights into how easily different mulch beds may be ignited by firebrands, as compared to much more costly and time-consuming full-scale experiments. While it is interesting to conduct full-scale experiments, this is very expensive and not always practical, so the authors are devising far cheaper reduced-scale experiments to provide more in-depth scientific understanding of firebrand shower ignition of construction components.

中文翻译：

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通过缩小规模的实验了解火把淋浴的点火漏洞


近年来，大型户外火灾问题日益受到全世界的关注。建议清除房屋周围和社区内的可燃物，以避免潜在的财产损失，因为火炬淋浴点火是一种危险的威胁。家庭周围常见的可燃物之一是覆盖材料。制定了缩小规模的实验方案，以研究火把对覆盖材料的点燃以及对附属墙组件的影响。将缩小规模的实验结果与全尺寸实验结果进行比较。具体来说，比较中对两种趋势感兴趣。首先，各种覆盖物类型在暴露于火力阵雨中的易燃性排名。其次，如果给定的覆盖物类型因暴露于火力阵雨而被点燃，则由此产生的覆盖物床火灾是否能够点燃相邻的墙壁组件。缩小规模的实验结果捕捉到了从大规模实验中观察到的一些趋势，但并不完全。研究结果仍然表明，与成本更高、耗时得多的全面实验相比，缩小规模的实验可以让人们了解不同的覆盖物床被火把点燃的容易程度。虽然进行全面的实验很有趣，但这是非常昂贵的，而且并不总是实用，因此作者正在设计更便宜的缩小规模实验，以提供对建筑部件的火炬淋浴点火更深入的科学理解。