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Overaa Construction is an American family-owned construction company based in Richmond, California, which provides general contracting and design/build services in Northern California.〔〔 It is one of the largest contractors in California〔〔 and is consistently ranked among ''ENR'''s top 400 contractors in the US.〔 Overaa Construction has a self-performing concrete capability. The company crews perform about 600,000 man-hours on average each year, three fourths of which are concrete work.〔 == History == The company was established in 1907 by a Norwegian immigrant and carpenter Carl E. Overaa, who committed himself to rebuilding the Bay Area after the San Francisco earthquake of 1906.〔〔 Jerry (Gerald) Overaa, Carl Overaa's grandson, joined the firm in 1966. As of 2014, he works in the company as its Chief Executive Officer.〔 After the Great Recession the company worked on a number of projects supported by funds of the American Reinvestment and Recovery Act, including two projects for the Lawrence Berkeley National Laboratory.〔〔 In 2010, Overaa Construction logged the highest amount of man-hours among general contractors in Northern California.〔 In March 2011, Christopher Manning, who worked at the company for 25 years, was appointed president after Peter Kappelhoff retired.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Overaa Construction」の詳細全文を読む スポンサード リンク
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