Marriott Inner Harbor Hotel and Convention Center

Phase I required long clear spans to accommodate large meeting rooms and banquet facilities. Phase II required a framed ballroom floor, which necessitated heavy post-tensioned concrete beams and floor slabs to accommodate impact loads produced by ballroom activities (dancing). In addition, Phase II employed the use of post-tensioned concrete transfer girders, which clear spanned the ballroom and supported the hotel tower above. Hotel towers for both Phases were constructed from post-tensioned concrete flat plates supported on reinforced concrete columns and shear walls. The lower levels (street level) are reinforced concrete flat plates.