The most prized types of windows and doors—composed of custom, handcrafted, solid, hot-rolled steel—grace innumerable luxury residential, commercial, cultural, institutional, and historically prominent structures across the United States.
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Both fiberglass and stone wool insulation have merit, promote fire protection and sustainability, and offer value to architects, contractors, and property owners alike. This article’s intent is to present a scientific examination of the benefits of using each.
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In the new issue of The Construction Specifier, these two authors examine some of the many changes that can be found in the new, improved 2016 MasterFormat—the organizational resource co-published by CSI and Construction Specifications Canada (CSC).
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When specifying, designing, or building with ballistic-resistant products and/or assemblies, it is important to use safe, high-quality products that have not only been tested to accepted industry standards, but also certified.
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A flow-down provision states the terms of the contract at a higher tier are also binding on the lower-tier contractor. For instance, the subcontract between the general contractor and the electrical installer usually contains a flow-down provision stating the terms and conditions.
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Over the 60 years I have been writing specifications, I have not read a single satisfactory suggestion as to how to deal with the thorny subject of “or equal” when it applies to below-grade waterproofing.
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Modern curtain wall systems require structural supports as strong as they are versatile to keep pace with today’s increasingly large free spans, challenging angles, and sophisticated glass-clad aesthetics. While steel curtain wall frames have long met strength criteria, they have only recently provided the necessary design flexibility.
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When it comes to a leak-free building, the sealants are the backbone of the whole cladding system. Even the best exterior aluminum, masonry, glass, steel, or exterior insulation and finish systems (EIFS) are only as good as the sealants used to weatherproof the joints, penetrations, and transitions.
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Zinc is naturally found in elements such as air, water, and soil as well as in plants, animals, and humans. It is the 27th most abundant element in the Earth’s crust and is infinitely recyclable without the loss of its properties, making it a true renewable resource.
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There are two major sources of moisture in fresh concrete—excess mixing water left over after hydration of cement, along with natural groundwater beneath the concrete that moves to the surface by capillary action.
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