A landmark power plant in Owatonna, Minn., damaged in a 2010 flood has new life as the headquarters of Owatonna Public Utilities following a renovation by architects Leo A Daly.
When the Straight River flooded in 2010, 12 feet of water stood in the basement of the Owatonna power plant, a brick Italianate building with a distinctive neon sign, arched windows, and three silver smoke stacks. The flood damaged its generators, but OPU sought Leo A Daly's help in re-purposing the building into its new headquarters.
The interior volume of the turbine hall — 50 vertical feet of open space that had previously accommodated the plant’s massive boilers — guided Leo A Daly’s approach to space planning for the administrative and customer service spaces that would occupy the building.
Using the interior steel structure as scaffolding, Leo A Daly laid out atrium spaces and floating offices that cantilever over the ground floor. The effect is a series of connected spaces all lit by daylight through the building's large windows.
The building integrates artifacts from its pre-flood days. Boiler doors, valve covers, and valve wheels are re-presented in a gallery space. Bar grating is reused in the new building as railings. Energy efficient windows were installed while keeping the original window framing and some of the original glass in place. Colors, textures and materials from the original floor and equipment are incorporated.
To prevent future flood damage, flood doors were installed in a conditioned space below the flood line, which will allow river water to come and go without disrupting operations above. To pull this off, the architects had to raise the first occupiable floor by one foot.
Leo A Daly sees the Owatonna renovation as part of a growing trend. More cities are interested in repurposing their heritage facilities, rather than simply razing them and building new.
Related Stories
| Apr 8, 2011
SHW Group appoints Marjorie K. Simmons as CEO
Chairman of the Board Marjorie K. Simmons assumes CEO position, making SHW Group the only firm in the AIA Large Firm Roundtable to appoint a woman to this leadership position
| Apr 5, 2011
Zaha Hadid’s civic center design divides California city
Architect Zaha Hadid is in high demand these days, designing projects in Hong Kong, Milan, and Seoul, not to mention the London Aquatics Center, the swimming arena for the 2012 Olympics. But one of the firm’s smaller clients, the city of Elk Grove, Calif., recently conjured far different kinds of aquatic life when members of the City Council and the public chose words like “squid,” “octopus,” and “starfish” to describe the latest renderings for a proposed civic center.
| Apr 5, 2011
Are architects falling behind on BIM?
A study by the National Building Specification arm of RIBA Enterprises showed that 43% of architects and others in the industry had still not heard of BIM, let alone started using it. It also found that of the 13% of respondents who were using BIM only a third thought they would be using it for most of their projects in a year’s time.
| Apr 5, 2011
Top 10 Buildings: Women in Architecture
Making selections of top buildings this week led to a surprising discovery about the representation of women in architecture, writes Tom Mallory, COO and co-founder, OpenBuildings.com. He discovered that finding female-created architecture, when excluding husband/wife teams, is extremely difficult and often the only work he came across was akin to interior design.
| Apr 5, 2011
What do Chengdu, Lagos, and Chicago have in common?
They’re all “world middleweight cities” that are likely to become regional megacities (10 million people) by 2025—along with Dongguan, Guangzhou, Hangzhou, Shenzhen, Tianjin, and Wuhan (China); Kinshasa (Democratic Republic of the Congo); Jakarta (Indonesia); Lahore (Pakistan); and Chennai (India), according to a new report from McKinsey Global Institute: “Urban World: Mapping the economic power of cities”.