Square 450, Washington, DC – DC Eagle & Warehouse Building
Structural engineering, design and detailing of all phases of work for International Chimney Corporation, Engineers and Contractors, and as required by, and designed specifically for, the specialty house movers. This involved the design for building internal and external bracing required for lifting and relocating or transporting the building, means-and-methods, proprietary and custom structural steel frames, jacking and other systems for hydraulically lifting, transporting, and permanently relocating two existing historic brick load-bearing masonry four (4) story buildings, weighing approximately 1200 and 1600 tons each, respectively. Once the buildings were lifted to their permanent higher elevation and released from its foundations, each building was then transported about thirty-five feet across the site to its permanent location on hard-steel rollers supported by heavy 14” deep steel beams used as roll beams for building transportation.
The warehouse building was original designed and constructed to support heavy storage loading on all floors. The exterior brick load-bearing walls were constructed of dense, “hard” brick and stronger than typical mortar which contained much Portland cement. As a result, when the building was initially lifted by the move load steel and jacking system, much of the brick walls between the steel cross beams penetrating the wall did not initially separate. This required excess jacking force to separate the building from its foundations. In some instances, the actual wall and foundation below the jacking system and temporary steel support frame pulled out of the ground when lifting the building.