The World Bank Main Headquarters Complex, Washington, DC
The World Bank Headquarters Main Complex is a 13-story office building with five levels of office space and parking below ground. Constructed of post-tensioned reinforced concrete, the complex required below-grade excavation supported by a concrete diaphragm slurry wall. The total project, including new construction and structural renovation, includes 1.3 million square feet.
· ECS provided full testing and inspection services during construction, including earthwork, slurry wall construction, waterproofing, reinforcing steel, post-tensioning, fluid concrete placement, roofing, structural steel, and structural precast. Glass and aluminum curtain wall and a 15,000 square foot skylight were inspected during fabrication and erection and water testing was conducted after installation.
· ECS provided geotechnical-monitoring services for settlement and lateral movement of adjacent structures during excavation operations.
· Settlement and lateral movement readings were taken twice a week using a total station, tiltmeters, and inclinometers.
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