经声学测试的大型木材组件清单
找到一个声学测试组件,适合您的项目. 浏览在美国测试的程序集.S.,包括STC和ICC评级和测试报告.
设计用于声学的大量木地板在过去的十年里, t在这里 has been growing interest in tall buildings constructed from mass timber materials as a means to achieve greater urban density with more sustainable construction. Worldwide, t在这里 are now dozens of buildings with more than seven stories of timber construction.
在美国.S., the 2021国际建筑规范 (IBC) includes three new construction types—Type 四、, ivb and IV-C—that allow the use of mass timber or noncombustible materials in buildings up to 18, 12层和9层(分别). These construction types are based on the previous Heavy Timber construction type (Type IV, changed to IV-HT in the 2021 IBC) but with additional requirements regarding fire-resistance ratings and use of noncombustible protection.
Mass timber projects designed under the 2018 or earlier versions of the code are generally constrained by prescriptive building height limits of five to six stories depending on the occupancy group. The term “tall timber” is associated with buildings that exceed the limits of previous codes for number of stories, 高度和某些情况下的面积.
如果你有兴趣在美国从事一个高大的木材项目.S.,请参阅下面的常见问题和资源. WoodWorks also provides free technical support to developers and design/construction teams. 如需帮助,请联系 WoodWorks区域总监 本地或电子邮件 help@bbfletsdance.com.
参观 木工信息网 获取美国大型木材项目的可搜索地图.S. (以及其他地方),并了解他们的项目团队. 这是一个 链接到地图 筛选七层及以上的项目.
建成的或在建的:
点击此链接 for the status of the 2021 IBC and jurisdictions that have adopted the tall wood code provisions.
Required Noncombustible Protection on Mass Timber Elements by Construction Type
四、 | ivb | IV-C | IV-HT | |
---|---|---|---|---|
木材暴露津贴 | 不允许使用外露木材 | Ceilings and integral beams up to an area equaling 20% (per 2021 IBC) or 100% (per 2024 IBC) of fire area or dwelling unit area or Walls and integral columns up to an area equaling 40% of fire area or dwelling unit area or 两者的组合, with the sum of ratios (actual exposed divided by allowable exposed) not to exceed 1.0 | 允许完全暴露室内木材* | 允许完全暴露室内木材* |
建筑元素的内表面 | 总是需要. 2/3的FRR,最少80分钟 | 需要有例外. 2/3的FRR,最少80分钟 | 不需要* | 不需要* |
外墙外侧面 | 40分钟 | 40分钟 | 40分钟 | 15/32″FRT护套或1/2″石膏板或不燃材料 |
地板顶部(大质量木材上方) | 1“最小 | 1“最小 | 不需要* | 不需要* |
轴 | 2/3的FRR,至少80分钟,内外均可 | 2/3的FRR,至少80分钟,内外均可 | 室内外至少40分钟 | 不需要* |
高质量木结构的FRR要求(小时)
建筑元素 | 四、 | ivb | IV-C |
---|---|---|---|
主要框架 | 3 | 2 | 2 |
外承重墙 | 3 | 2 | 2 |
内承重墙 | 3 | 2 | 2 |
屋顶结构 | 1.5 | 1 | 1 |
屋顶主框架 | 2 | 1 | 1 |
楼板结构 | 2 | 2 | 2 |
点击此链接 for an article that discusses how teams are utilizing the new code provisions to enhance the appearance of their tall mas timber structures with exposed timber framing.
是的, 2024年的IBC将包括新的代码更改, 哪些已获批准并将被合并, which allow timber ceiling exposure in Type ivb construction up to 100%. 新的代码语言将在2024年IBC中读取 在这里. 一些司法管辖区,比如丹佛市, 达拉斯市, State of Oregon and State of Washington are already in the process of incorporating these new timber exposure limits in their building codes, and several design teams are looking to utilize the new limits in project-specific discussions with their local building officials. 联系你当地的木工公司 区域主任 了解您所在地区的项目如何处理这些设计主题.
Looking for information on the tall wood provisions in the 2021国际建筑规范? This paper summarizes the provisions as well as the background and research that supported their adoption.
查看资源找到一个声学测试组件,适合您的项目. 浏览在美国测试的程序集.S.,包括STC和ICC评级和测试报告.
设计用于声学的大量木地板Browse this inventory of mass timber assemblies and penetration fire stopping systems in mass timber assemblies that have been tested for fire resistance.
阅读更多配备工程师, 建筑师和建筑专家, we help project teams identify and successfully realize the most appropriate wood solutions for their projects. 观看这个短片了解更多 联系我们获得免费项目支持.