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RED ROOF INN, NW, WASHINGTON, DCA ten-story concrete building, constructed twenty years ago, underwent a major structural renovation including over 100 micro-piles drilled to an elevation of 30 feet below the existing foundations. The scope of the work centered on stopping settlement (4”-6”) of the existing structure and provid-ing a new and stable foundation system while the hotel remained fully op-erational. McCullough led the “design-build” team of Schnabel Engineering, CAT and Steele Foundations to a successful conclusion where the Owner saved over $2 Million from their projected budget. |
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CONGRESSIONAL OVERLOOK, SE, WASHINGTON, DCDue to extremely poor soil conditions, the foundation system included a combination of eighty-two Geopiers and helical piers before a conventional concrete foundation could be constructed. The building pad and paved areas were over excavation by 24” for the placement of structural fill (RC-6) which was spread and compacted in 8” lifts. The new structure includes concrete wall footings, load bearing CMU walls and wood trusses. |
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6003 EXECUTIVE BOULEVARD, ROCKVILLE, MDThe reconstruction of this six story office building included selective demolition back to the original structural steel frame. Slab edge repairs were made to facilitate the new façade (precast and curtain wall) connections and the roof repair included replacement of metal decking while saving and repairing the original steel. |
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JEFFERSON ROW, NW, WASHINGTON, DCThis project included the rehabilitation of four existing historic townhouses and a new addition of nineteen new condominium units. Work included sheeting and shoring, underpinning, H-pile foundations, cast-in-place concrete structure below grade, and a seven story steel framed structure. In addition, the historic structures and facades were renovated in accordance with strict HPRB requirements. |
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THE INCINERATOR CONDOMINIUMS, NW, WASHINGTON, DCIn order to accommodate numerous penetrations through the structural slabs for this renovation of custom condominiums, carbon fiber rods were used with epoxy resin as a method of repair. This provided the required strength to the affected slab to accommodate the “punching shear”. |
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ROOM & BOARD, NW, WASHINGTON, DCWhen the Owner decided to add a 4th floor to this existing 3 story building, McCullough worked closely with the consulting engineers to find the most cost effective method of reinforcement of the existing foundations. In this case, the existing spread footings were simply enlarged by doweling rebar into the concrete and creating a “footing extension”. |
