More on duplex stainless steel and bridges

Pedelta’s Cala Galdana Bridge in Menorca, Spain, uses duplex 2205 stainless steel structural components. Photo © Juan Sobrino

In the May 2015 issue of The Construction Specifier, Catherine Houska, CSI, discussed how duplex stainless steels are being specified for numerous structural applications. This complementary web piece looks at a few additional projects from around the world that make use of this versatile material’s attributes.

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Dynamic Air Filtration for the Marijuana Industry


Dynamic Air Quality Solutions manufactures high-performance air filtration products including polarized-media air cleaners, carbon filtration systems, and germicidal ultraviolet (UV) systems. Dynamic Air Cleaners have been available to commercial and residential customers since 1982. About two years ago, the company discovered several of its products were being specified on commercial growing operations or, in that industry’s parlance, ‘grows.’

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Walking the Walk

A clear-span steel structural system was chosen to accommodate heavy equipment at the Washington Electric Cooperative project in Marietta, Ohio. A standing-steam metal roof system was specified to provide relief from the leaks of the former facilities.
 Photos © D.A. Fleischer Photography

Energy distributor makes efficiency top priority

By Kevin Hutchings

Maximizing energy efficiency is a key concern on virtually every new commercial construction project. When the construction happens to be for the electric provider itself, it is easy to understand how the priority takes on even greater importance. This was the case for Washington Electric Cooperative, an energy distributor located in Marietta, Ohio.

The company had been operating for years out of three separate …

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Passive Fire Protection and Interior Wall Assemblies

All images courtesy ClarkDietrich Building Systems

To ensure optimal fire protection, building codes require interior wall assemblies to be evaluated by industry standards to determine their fire performance. This article gives examples of fire-rated wall assemblies and passive firestop systems, describing the testing they must go through to achieve their fire ratings. It also covers best practices for the specification and installation of each.

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