INvestigators试图找到一场大火的原因，该大火在本周早些时候摧毁了俄克拉荷马城正在建设的一栋公寓楼。

近年来，大火是一系列木结构的公寓楼建筑大火之一，引起了保险公司，风险经理和承包商的关注。

当地消防局官员认为，在Classen Curve公寓楼的几乎完整的325个单位广州，价值6500万美元，总损失。

只有369,000平方英尺的结构中的专业区域（具有后张紧混凝土甲板的结构）没有木结构。三相项目的第一阶段已经完成并移交给开发商，第一批租户计划在下个月搬迁。

总部位于休斯顿的房地产公司Hines和俄克拉荷马城投资公司Humphreys Capital是该项目的开发商。

When the fire department arrived at 6:33 pm on Tuesday, smoke and fire were already visible on the structure's roof.

The fire suppression system and a standpipe system—designed to deliver water to the building's upper floors for use by firefighters—were only operational in the development's completed first phase. Neither of the systems were working in the rest of the structure.

消防官员指出，他们确定为热塑性聚集蛋白（TPO）制成的屋顶材料似乎加剧并散布火。一旦大火到达屋顶，它很快就开始遍及结构。

TPO is "very difficult to ignite but once it is ignited it is very difficult to extinguish,” said Capt. Scott Douglas of the Oklahoma City Fire Department. His characterization of the material could not immediately be confirmed.

消防人员倒入了强烈的热量和火力以及200万加仑的水中，损害了公寓楼的结构完整性和迫使消防员。

“建筑成衣的恶化ty quickly,” Douglas said. “Just a few hours in we removed everyone from interior operations and conducted defensive operations only.”

作为五层楼的木结构结构，该建筑被归类为国际建筑法规（IBC）的III型。这种类型要求将外部负荷墙评评评级，以便在建筑物的外墙内包含任何火灾并减轻任何扩散。

Additionally, the structure was divided into multiple individual code-regulated buildings. These individual sections were separated with walls made of autoclaved aerated concrete with a three-hour rating. According to fire department officials, they found not code violations.

过去的木结构结构被烧毁

火的大小和强度让人联想到木结构公寓建筑工地的过去燃烧，引起了安全问题。国家消防协会说，建筑下的木框公寓大楼构成了独特的火灾危险，并且必须在整个建筑过程中保持严格的安全标准。

NFPA建议创建整个建筑防火计划，并指定预防消防经理进行施工。问题在于每个项目都提出了必须识别和解决的特定火灾安全问题。

NFPA的技术服务工程师Val Ziavras说：“没有黑白的答案，或者我们可能会在今年前解决。”“很大程度上取决于每个站点以及维持安全所需的特定要求。”

过去，类似的大火导致官员们专注于建筑材料（特别是木材）作为大火背后的主要罪魁祸首。国家多户住房委员会的建筑，开发和土地用途政策副总裁宝拉·西诺（Paula Cino）表示，方法可以掩盖更生产性的消防策略。

Fire-Prevention Partnership Needed

她说：“从根本上讲，安全安全和计划之类的事情必须成为对话的重要组成部分。”“这里的真正关键是伙伴关系和责任在于所有者，开发商，承包商和所有分包商。”

The fire protection group's standard for fire prevention during construction, NFPA 241, ensures that fire safety standards are maintained throughout the building process. It requires building owners to create an overall construction fire safety program and designate a fire-prevention manager for the construction process.

Ziavras解释说，执行也很重要。“制定计划是一回事，但是您必须进行沟通和执行。”