U.S. Capitol

U.S. Capitol

Stone and Metal Preservation, North Extension

The scope of work included the restoration of historic stone masonry and historic metal elements. Grunley performed façade stone cleaning and restoration, laser cleaning, consolidation, repointing and repairs to the building’s north exterior historical fabric. A total of 49 portico Corinthian columns and capitals were laser cleaned and consolidated; all 98 terrace lampposts received replica lantern tops that match the historic condition; 19 handrails and guardrails were restored off-site and reinstalled, including the famous West Rails that descend to the National Mall; nearly 300 new, carved marble bracket, rosette, capital leaf, and column flute Dutchmen were fabricated and installed throughout the building; several thousand miscellaneous stone repairs were documented and performed; and more than 130 historic bronze cast iron light fixtures were restored.

Project Details

Client:Architect of the Capitol

Location:Washington, D.C.

Sectors:Government, Museum/Monument

Contract TypesRenovation, Restoration

Completion DateNovember 30, 2017

Amount$15.5 million

Contract MethodGeneral Contracting

Architect Architect of the Capitol

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