Colonial Bank Office Building and Parking Deck


Huntsville, Alabama


  • 275,000 Square Feet

  • Three-story cast-in-place, post-tensioned concrete office building built on top of a five-story cast-in-place, post-tensioned concrete parking deck.

  • Office building and parking deck were isolated to the maximum extent possible to account for differences in thermal movement as well as migration of sound and vibrations from the parking deck into the office building.

  • A branch bank was located on the ground floor and special considerations were required for moisture protection from the exposed deck above in addition to sound and vibrations.

  • The combination of the two building functions required balancing of the competing structural grid requirements to develop a structural grid that achieved efficiency for the building as a whole.

  • Project was a joint venture between and private and public owner.

  • Their agreement required issuing two separated bid packages that accounted for special controls needed to provide for a smooth transition between the first and second packages in the event different general contractors constructed them.

  • Drilled piers supported on rock were used as the foundation system.

  • Since the configuration of the building required the use of shear walls for the lateral load resisting system, rock anchors were required to resist uplift forces in the pier groups supporting the shear walls.

3300 CAHABA ROAD • SUITE 210 • BIRMINGHAM, ALABAMA 35223 • 205.879.5660