RESIDENTIAL PROJECTS

The project is a two-story wood frame residence with cathedral ceilings in an L-Shape footprint with a full basement and a detached garage located in a relatively flat site at Southampton, New York. The main structure, although comprised of conventional wood platform-frame construction, is designed using a more rigorous structural analysis and design methodologies to ensure better building performance in resisting high wind and snow loads while maintaining economical use of materials. Floor framing consists of a system of sills, girders, joists and sub-flooring that provides support for floor loads and act as diaphragm to distribute lateral loads to surrounding braced wall panels (BWP). The exterior wall framing also resist lateral wind loads in addition to supporting the floor and roof gravity loads. Roof construction consists of ceiling joists and rafter framing with collar ties at every second pair of rafters, exposed to view extending beyond the cathedral ceilings

Highrise development located in Sai Wan Ho, Hong Kong consisted of 5 towers ranging from 63 stories (699 ft) to 66 stories (719 ft) in height with 6 podium levels that include bus terminal at ground floor, car park levels, club house level and an elevator lobby floor along with the residential floors at upper structures above the transfer plates. Towers 2, 3 and 5 are connected by a common 14 ft thick transfer plate above the podium level. Towers 1 & 6 also rest on individual transfer plates. There are two refuge floors in every tower with the 47th Floors also utilized as “sky garden”, used as observation venues and enjoy the view of the harbor. The top two floors of each tower feature combined units (penthouse) with increased floor to floor heights making it particularly more difficult to frame.

The towers represented one of the earliest applications of typical floor flat slabs utilized as part of the main lateral wind force resisting systems. Extensive wind tunnel testing was performed to establish the lateral wind loads used in the design of the towers.

The 120,000 gsf luxury oceanfront condominium consisted of 7 residential floors and one level parking utilizing post-tensioned flat slab construction on concrete columns and shear walls supported by auger cast pile foundations. It has 26 residential units with expansive long-span cantilevered balconies. Columns were widely-spaced in the middle of the building to accommodate for the grand social room and the board room/business center. The podium level supports the port cochere, elevated landscape area with water features and designed to allow for emergency vehicular access.

Six stories mixed-use residential building primarily comprised of cold-formed steel frame on piled foundation. Floor construction consisted of composite floor system by combining composite steel joists with poured concrete slab, developing a hybrid concrete-to-steel T-beam in one direction with integrated continuous one-way slab in the other direction. In this floor construction type, the top chord is embedded in the concrete and function as shear connector during composite stage while also acting as compression member during non-composite stage.