The Cortland Park Office Building was originally designed to be a three- story concrete tilt-wall building with a basement comprised of approximately one-third of its footprint. After a detailed constructability review of this design, Warner Construction recommended the design be modified to a two-story structure, eliminating the basement. This recommendation was based upon several analysis: The slab-to-skin ratio of the original 3 story design for this project was not conducive to tilt-wall construction. Without the appropriate floor area to cast the wall panels, economical advantages of tilt-wall construction could not be realized for an office building of this nature.
The basement also provided a constructability issue in terms of lay-down area for wall panels on the building slab. Additionally, the construction of the basement was determined to be cost prohibited due to the magnitude of rock that would need to be excavated for its construction. Warner Construction also determined that the parking requirements needed for a 3-story office building, exceeded that which was available on the site. Thus confirming the third floor was not beneficial. The unique design of the building also included executive style corner balconies which contributed to the complexity of the overall construction as it related to thermal protection. Lastly, the building included a separate mechanical and ventilation system for a future restaurant. This system was designed to not impede leasable square feet on the second floor.
In the end the project Owner was pleased our expertise and collaboration with the design team provided for a rapid development of the project from the design alteration to construction, allowing our client to realize a well designed, successful and cost effective building.