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File:Precast unit2.jpg

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English: Precast elements are being applied to the building at Six Logan Circle, Washington, D.C. The new pre-cast units were hoisted up the scaffolding on wide belt slings with an electric winch, and installed in place using a portland cement-based mortar appropriate for cast-concrete. The original bricks were relaid with a more traditional lime-based, dark colored mortar
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Source http://www.nps.gov/hps/tps/technotes/PTN23/Methodology.htm
Author James Smith
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Public domain This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.

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current16:09, 14 April 2010Thumbnail for version as of 16:09, 14 April 2010800 × 757 (270 KB)Preservapedia (talk | contribs){{Information |Description={{en|1=The new pre-cast units were hoisted up the scaffolding on wide belt slings with an electric winch, and installed in place using a portland cement-based mortar appropriate for cast-concrete. The original bricks were relaid

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