Demolition Makes Way for $419-million Development

Crews from Dykon Blasting Corp., Tulsa, Okla., safely imploded an eight-story building in east Denver on Aug. 29. The early Saturday morning demolition of the former University of Colorado Biomedical Building makes way for a $419-million, mixed-use commercial development at the former site of the University of Colorado medical campus. Dykon filled the building with 170 charges, which leveled the structure within 30 seconds. The implosion saved nearly four months of manual demolition work at the site, said Frank Cannon, development director for Continuum Partners, the developer.

Feds Approve Transmission-Line Easement for Blythe Mesa

Construction of a 485-MW solar photovoltaic plant could begin as the Bureau of Land Management has approved a five-mile easement on public land for a 230-kV transmission line. The Blythe Mesa Solar Power Project, proposed by privately held, Los Angeles-based RRG Renewables, is to be built on 3,587 acres of private, formerly agricultural land near Blythe, Calif. It will interconnect with the Southern California Edison grid at its Colorado River Substation in Riverside County. BLM approval was required because the public land lies between those points. News reports peg the cost at $1.13 billion, but RRG did not return ENR’s requests for confirmation.

用于修复旧混凝土结构的指南

美国混凝土研究所计划于9月发布一份指南，以帮助工程师符合ACI的首个修复旧结构混凝土建筑的模型代码。到明年年初，ACI预计将发布公众评论该代码的更新版本草案，于2013年发布。ACI562-13“评估，维修和修复混凝土建筑物和评论的代码要求”旨在建立规则为了更好地执行正在维修的旧混凝土结构，可能无法满足当前代码。它强调基于性能的设计，设置所需的最小维修实践，如果遵循，则有助于实现良好的安全结构。

紧凑型田径装载机挖出市场份额

据市场研究公司Manfredi＆Associates称，由于新产品的涌入，在美国的橡胶跟踪装载机的销售额现在与传统的滑雪者大致相同。在其最新的“机械前景”新闻通讯中，总部位于俄勒冈州梅德福市的公司估计，2014年美国紧凑型田径装载机（CTL）的销售量达到35,000辆，而Skid Steers的销售量为37,000辆。在去年之前，CTL被认为是利基产品。曼弗雷迪指出，“鉴于橡胶跟踪的机器的价格比其橡胶型的同行高20％至30％，这是一个显着的，而且替换轨道的替换价格比轮胎更昂贵。前五名的CTL领导者包括山猫，市场份额为29.9％，其次是卡特彼勒（27.7％），库博塔（16.4％），迪尔（11.2％），武chi（5.4％）。

洛玛下令向起重机倒塌的受害者

After what is believed to be the longest civil trial in Manhattan Supreme Court history, a jury found James Lomma, owner of Maspeth, N.Y.-based New York Crane & Equipment Corp., liable for the May 2008 crane collapse in New York City that killed Donald Leo, 30, and Ramadan Kurtaj, 27. The court ordered the crane magnate to pay the families of the victims a total of $96 million. The two men were killed when parts of a Lomma-owned 200-ft-tall tower crane operated by Leo fell to the ground during construction of a high-rise building at East 91st Street, crushing Kurtaj, a construction worker standing on the street below. While Lomma’s defense team alleged that Leo had caused the collapse by two-blocking—or causing the hook block to retract into the boom tip—the crane, lawyers for the family argued that the crash was caused by a defective turntable that Lomma sourced from China. The mechanic in charge of overseeing these repairs pleaded guilty to criminally negligent homicide in 2011, although Lomma, 69, was acquitted of all criminal charges in 2012.