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A progress report on the National Institute of Standards and Technology (NIST) World Trade Center (WTC) building and fire safety investigation released in May did not offer any specific conclusions or recommendations, because the agency still considers the investigation to be in its early stages. NIST Director Arden Bement Jr., however, "reported solid progress by the investigation team at the one-third mark of the ongoing 24-month effort." The report focused on the floor system and its fireproofing. Dr. Shyam Sunder, lead investigator, however, says that the investigation to date has not determined that the floor trusses played a critical role in the collapse of the WTC towers. However, NIST has not been able to locate any information pertaining to fire endurance tests on the WTC floor system. The architect and the structural engineer of record stated in 1966 and 1975, respectively, that the fire rating of the floor system of the WTC towers could not be determined without testing.
机译:5月发布的有关美国国家标准技术研究院(NIST)世界贸易中心(WTC)建筑和消防安全调查的进度报告未提供任何具体结论或建议,因为该机构仍认为该调查尚处于初期阶段。 NIST主任Arden Bement Jr.表示:“调查小组在持续进行的24个月的努力中,有三分之一的时间报告了坚实的进展。”该报告集中在地板系统及其防火方面。但是,首席研究员Shyam Sunder博士说,迄今为止的调查尚未确定地板桁架在WTC塔楼倒塌中起关键作用。但是,NIST无法在WTC地板系统上找到与耐火测试有关的任何信息。记录的建筑师和结构工程师分别于1966年和1975年表示,未经测试无法确定WTC塔楼地板系统的防火等级。

著录项

  • 来源
    《Fire Engineering》 |2003年第7期|p.42-48|共7页
  • 作者

  • 作者单位
  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 市政工程;
  • 关键词

  • 入库时间 2022-08-18 00:32:54

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