South Carolina Electric & Gas Substation Renovation
Charleston South Carolina

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 Services:

• Design and renovation of Historic Structure
• In-situ testing
• Development of restoration program

Tasks:

• Phase I: Exterior restoration of building
• Phase II: Structural strengthening of building

Project Description:

Lindbergh & Associates evaluated and designed the renovation of a two historic brick structures currently being utilized as an electric transmission switch house. The work was completed in two phases; Phase I consisted of substantial exterior restoration of the building. Phase II provided for the structural strengthening of the larger building.

In-situ testing was conducted to establish the in-plane shear strength of the existing brick walls. The project included:

• Placement of steel/ polyester resin composite vertical reinforcing cores
• Upgrade of the roof diaphragm
• Additional connections to strengthen and provide lateral support to the structure for wind and seismic loadings.

This restoration work received the 1993 Carolopolis Award by the Preservation Society of Charleston for project, described as follows:

These two masonry structures were built in the 1850’s as part of a gas plant by the Carolina Gas Light Company, a forerunner of SCE&G. The larger of the two buildings is still in service by SCE&G and houses controls for an electric substation and long distance communications equipment. The restoration work included substantial masonry repairs, the removal of later additions, restoration of the slate roof on the small building. The restoration program was developed by Lindbergh & Associates.