Scope included the total renovation of the 150-year-old South Carolina State House that is the building housing the government of the State of South Carolina including the state’s General Assembly and the offices of the Governor and Lieutenant Governor.
Caddell’s contract included surrounding the landmark building with a 20-ft-deep concrete foundation “moat-wall” to isolate the building from the site’s non-compacted soil. Existing foundations were then undercut, almost nine million pounds of granite were removed, and a new basement and foundation system that included 120 seismic isolators was installed. Caddell also replaced all mechanical, electrical, and plumbing infrastructure. Exterior renovations included masonry and stone repairs, replacing copper and slate roofs, and refurbishing windows. Inside, Caddell restored the elaborate interiors to their Victorian splendor.