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Stone Preservation on the Capitol Campus
Stone preservation is a top priority for the Architect of the Capitol (AOC) as nearly every building is enveloped in stone and all have problems.
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Deferred Maintenance
When the Architect of the Capitol (AOC) does not receive enough funding to pay for all maintenance and repairs required across the U.S. Capitol campus, work gets deferred due to budget constraints.
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Heritage Asset Conservation
The preservation of heritage assets on the U.S. Capitol campus is one of the Architect of the Capitol's (AOC) core functions.
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Thurgood Marshall Façade Stabilization
Supreme Court Building and Grounds
Work to stabilize façade elements at the Thurgood Marshall Federal Judiciary Building has begun.
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Adams Building Roof Replacement and Fall Protection
Library Buildings and Grounds
This two-phase project will replace the 85-year-old copper roof of the Library of Congress' John Adams Building.
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Hearing Room Modernization Program
House Office Buildings
Senate Office Buildings
A multi-year program ensuring hearing rooms on the Capitol campus have reliable features to support Congress' legislative duties.
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Sustainability
The Architect of the Capitol's (AOC) commitment to sustainability is demonstrated through our robust energy conservation and sustainability programs.
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Capitol South Screening Facility
This project will create a stand-alone structure nestled into the landscape that will serve as the new screening area prior to entering the House Wing (south entrance) of the U.S. Capitol.
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An Accessible Capitol Campus
Many of the historic buildings under the Architect of the Capitol’s (AOC) care were constructed before the establishment of current accessibility standards and require upgrades to provide reasonable accommodations for individuals with disabilities.
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Cannon Renewal
House Office Buildings
The Cannon Renewal Project provides an effective workplace for the next century to serve the needs of the U.S. House of Representatives and support Congressional operations.
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Capitol Building Paint Analysis and Plaster Repairs
Capitol Building
Restoring areas of the U.S. Capitol to represent an appropriate period as determined by the curatorial community.
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Olmsted Terrace Preservation
Capitol Building
To properly restore the Olmsted Terrace, a six-phased project is underway by the Architect of the Capitol (AOC) to repair the masonry at the terrace walls.
On Going
Capitol Exterior Preservation - Stone and Metal
Capitol Building
A multi-phased project designed to address deferred maintenance, extend the life expectancy of the deteriorated stone and to replace missing elements of the U.S. Capitol Building.
Completed
Russell Exterior Envelope Project
Senate Office Buildings
The Russell Building is the oldest of the three Senate office buildings. In FY 2023, the AOC successfully completed the Russell Exterior Envelope Project, a multiyear restoration project to preserve and repair the exterior envelope of the century-old building.
Completed
Children's Garden Improvements
U.S. Botanic Garden
The United States Botanic Garden (USBG) and Architect of the Capitol has updated the Children's Garden in the USBG Conservatory.