Converting the Ottawa St. Power Station into the Accident Insurance Fund HQ
An Inside Job - More photos of erecting a new steel frame inside the historic Ottawa Street Power Station in Lansing, Mich.
Constructing a 10-story steel-framed office building inside an existing masonry structure while preserving and supporting the heavy shell challenged the entire project team. The project converted the historic Ottawa Street Power Station in downtown Lansing, Mich., into the new headquarters for Accident Insurance Fund Company of America. It is described in the December 2010 issue of Modern Steel Construction. Read the article by clicking here. (Click photos for larger image)
Early building exterior during construction.
Existing structure near eighth floor. Note roof hatch used for erection installed at the new roof level visible beyond.
Existing structure with HSS bracing that was added in 2000 when chilled water system was installed. Bracing remained in place throughout erection and was only removed as new bracing was installed as the steel was erected.
Existing structure with HSS bracing that was added in 2000 when a chilled water system was installed.
Chiller HSS bracing from second floor through roof.
New permanent bracing in foreground with old HSS bracing visible in background.
More HSS bracing.
Connections being added to existing steel for the new steel. Note that the access to the existing steel is by rolling scaffolding being used on the new concrete floor below.
Erection of members.
Erection of members on first floor by utilizing a small hydraulic crane in the basement.
Existing 7-ft-deep riveted plate girders previously used for boiler supports.
Another view of existing 7-ft-deep riveted plate girders previously used for boiler supports.
Finished condition showing exposed existing 7-ft-deep riveted plate girders previously used for boiler supports finished condition.
Existing riveted column splices during construction.
Existing riveted column splices in the finished building.
Photos courtesy of Douglas Steel Fabricating Corporation, Lansing, Mich.