Upscale Residential Tower
Northeast, US
Kyle Freeley
[Structural]
General Building Data
Building Name
Location and Site
Occupancy
Size
Number of Stories
Height
Dates of Construction
Cost
Project Delivery Method
(confidential)
(confidential)
Residential
219,500 sf
13 (+4 below ground)
163 ft
June 2016-February 2017
Approximately $60 million
Design-Bid-Build
Primary Project Team
Owner
Architect
Structural Engineer
Civil Engineer
Mechanical Engineer
Interior Designer
Construction Manager
PHMII Associates, LLC
Marchetto Higgins Stieve Architects
Christie Engineering, P.C.
Dresdner Robin
Barone Engineering Associates, LLC
The Childs Dreyfus Group
Tocci Building Companies
Codes
IBC 2009 (state edition)
ASCE 7-05
Uniform Construction Code of (state)
NFPA 70-NEC 2011
IMC 2009
IFGC 2009
NSPC 2011
Local Zoning (confidential)
Architecture
The building is a mixed-use development providing convenient living arrangements in a busy downtown area. The building’s location makes access to food, shopping, and public transportation convenient for its residents. Floors 2-13 of the residential tower each have 20 units of varying size and layout for a total of 240 upscale apartment homes. The first floor will include retail and amenity space. These spaces includes a lounge, lobby, a fitness center with a yoga studio, as well as dry cleaning and the rental offices for the building. The new building will be constructed atop an existing 4-story parking garage on the 2.47-acre urban site.
Building Enclosure
Floors 2-13 of the building will be broken into sections of prefinished vertical ribbed metal wall panels and two different colors of composite aluminum panels. The metal panels will be punctuated by a thermally broken aluminum window system. The first floor differs from the others since it is accessible to the public, and will consist of an anonized aluminum storefront exterior.
The roofing system consists of metal coping on the parapet. An extended roofing membrane goes over top of the parapet. R-30 min. tapered rigid insulation will be used under a perimeter walk pad. The roof will house a vegetative roof system that will go towards making the building more sustainable and help it achieve a higher LEED rating.
Sustainability Features
2656 sedum tiles of extensive green roof planting system will span the top of the building to increase sustainability on the urban site. The plots of sedum tiles will be intersected by paths of 2’x2’ Hanover pedestal pavers to allow mobility on the green roof.
Structural
The main structural system of the Residential Tower consists of composite steel joists with 1.5” metal decking and a 6.5” lightweight concrete topping. Wide flange steel beams and girders of varied sizes run between the HSS columns and support the composite joist system. HSS6x6x1/2 columns (among others) run from floors 2-13 and form the exteriors of the metal flat strap braced frames that comprise the lateral resisting system of the structure.
Floor 2 acts as a transfer level for the structure since the tower is built over an existing parking garage. Larger, W40x278 and up, girders transfer the load of the building from the HSS columns above to the existing W14x159 columns below. These columns are not on the same grid system as the floors above, hence the transfer level.
Mechanical
The first floor of the building is mixed-use and open to the public, so split system heat pumps are used in this space. In the apartment units, thru-the-wall packaged terminal heat pumps are used, and can be controlled by the tenants. 2x2 return air and ceiling diffusers circulate fresh air and condensate pumps drain excess moisture from the air to discharge outside of the system.
Electrical
The building will run on 120/208V-WYE supplied to a circuit board in each apartment. An emergency generator with sub base diesel fuel and a sound attenuated weather proof enclosure acts as a backup for the main system. The backup system is 400kW/500kVA, 120/208V.
Construction
Construction of the Residential Tower is scheduled to be completed in February of 2017. It is being built atop an existing parking garage, so some demolition and remodeling is required in addition to the new construction. The project delivery method for this project is Design-Bid-Build.