HBM Experience – St. Stevens Church

St. Stevens African Methodist Episcopal Church Building 2000 West Washington Boulevard Chicago, Illinois 60612

The scope of services for this project included civil engineering services,design of all structural elements, production of civil and structural drawings and specifications, coordination and field visits during the construction process.The building has fivefloors (5levels) and approximately 30,100square feet of floor area.

The civil engineering services includedpreparing drawings with top of foundation elevations, providingexisting and proposed contours, designingstorm water drainage and detention system, locatingwater and sanitary service lines, labelingtop of foundation for adjacent properties, parking, drive and sidewalk pavementdetails, locating and labeling ofmanholes, erosion control, indicatingcurbcut, and curb and gutter details.

A hollow-core precast floor system was utilized and supported by steel beams which transferred the loads to the columns and foundations. Concrete shear walls and moment frames were used to resist wind.

A Finite Element Model was developed using SAP 2000 to reflect the true geometry of structure. Beams and columns were modeled by line elementsandbeam ends were released to simulate shear connections wherever needed. All foundations were assumed to be pinned in the mathematical model. Shear walls were modeled with membrane elements to resist in-plane forces resulting in a braced structure. The effect of concrete floor slab wasmodeled by rigid floor diaphragm at every floor level to distribute lateral wind forces homogenously among all members.Dead,live and wind loading patterns were calculated and applied to model as per design load cases. The foundation was designed to support the service loads of the structure.

Additionally, a construction stage analysis was performed for the structure using knee braces to resist major direction wind forces during the construction process.

Year Designed: 2004
Year Constructed:Ongoing

Prime Consultant:
WTW-Architects Planners Engineers, P.C.
Subconsultant:
HBM Engineering Group, LLC