MIXED USE, MULTI FAMILY RESIDENTIAL BUILDING

Building Information:

Building Name                                                            (Undisclosed by Owner Request) 
Project Location/Site                                                 (Undisclosed by Owner Request)
Building Occupant Name                                          Mixed-Use, Multi-Family Housing, Amenity Space and Retail
Occupancy Type                                                          Residential, R-2, S-2, M
Size (sqft)                                                                      384,000
Number of Stories above Grade                               5 Floors, 54 Feet
Dates of Construction (Start to Finish)                     06/24/14 to 08/16 (Projected)

Project Delivery Method                                             Design-Bid-Build

 

The Project Team:

Owner:                                                                            (Undisclosed by Owner Request)
Architect (Consultant to Owner):                               Bernardon Haber Holloway, Architects PC
General Contractor (Consultant to Owner):             Bozzuto Construction Company
Civil Engineer (Consultant to Owner):                       Commonwealth Engineers, Inc.
Mechanical Engineer (Consultant to Owner):          Advanced Engineering, Inc.
Structural Engineer (Consultant to Architect):         Baker, Ingram & Associates
Pool Consultant (Consultant to Architect):               James Sankey & Associates 

 

Architecture:

This building is a mixed-use, multi-family housing structure, made up of 4 stories of wood-framed residential living space, and 2 stories of concrete poured/concrete block parking garages. The inner courtyard of the complex gives tenants access to a +800 sqft. swimming pool, supported by steel framing.  The residential space holds 204 units, which vary from single bedroom to double bedroom layouts, each including a full range kitchen, living room/dining area, and optional outside deck access for the tenant. On the first floor, there is approximately 5500 sqft. of amenity space for access of the tenants.  As far as site location, (without giving too much info based on owner’s restriction), the site is close to shopping and eating areas, and other necessities that provide tenants plenty of access to these amenities. 

 

Coding and Standards:

Building                                  International Building Code (IBC) 2009                              

Accessibility                            ICC/ANSI A117.1-2009 (Accessibility required, IBC 2012)

Life Safety                              2009 Edition of Life Safety NFPA 101

Mechanical                              (I am gathering this information by request of MEP)            

Electrical                                 (I am gathering this information by request of architect)

Energy                                     International Energy Conservation Code (IECC) 2012

Zoning                                     Local Zoning (undisclosed)

 

 

Sustainability/Building Site Features:

For this building there are a few features that are interesting about the site.  The building sits on a heavily graded site plan.  From the North side to south, the building slopes down close to 15 feet.  With that intense grade change, the building’s lower parking garage levels have entrances at each floor.  This also effects how the building looks form the west and north faces.  The site flow is dictated where entrances are placed based on the site’s grade changes.  It is easy to see when standing at the south west corner that the building is made to flow with the site elevation variation.

 

Building Enclosure:

The building envelope is consistent for the 5 floors above ground for the building.  For a typical exterior cavity wall, both on the outside face and on the inner courtyard face, is made up of 2 components. One component being made of the 4 inch brick veneer for the façade external face, and the other component is made up of wall insulation inside of 2x6 studs and 5x8” gypsum wall board.  The brick veneer was a later add-on on the design of the project, the owner was a part of making the change from vinyl siding to brick veneer finishing to change the overall look of the façade.  As far as the foundation walls, which surround the 2 floor parking garage structure, they are made up of 12’’ thick poured concrete walls, and then a layer of brick veneer was added to the outside face, where the wall is showing above ground.

The roofing for this structure can be broken into two classifications, one with public access and one without public access.  The roofing materials used for both were the same, it consisted of adhered TPO membrane over top of a wood truss roof system, 12” batt insulation, 5/8” OSB Roof sheathing, and 1/2” Gypsum wall cover board.  The only difference of course, between both classifications is the difference in roof joist spacing and slight change of roof span layouts.  There is only a few locations where this building steps back at the fourth floor, giving tenants access to the roof, but the material type and structure are pretty standard, and some extra roof membranes are applied in those areas, that protects the roof for public access.

 

 Primary Engineering Systems:

• Structural:

The structural system for this building consists of three types: wood framing construction, composite steel framing, and reinforced concrete walls with composite deck.The 2 parking garage levels are made up of 1’-4” reinforced concrete walls and 5.5” composite metal deck.The 1 residential floor, which includes a courtyard pool and amenity space, is supported with composite steel framing, the sum of which is made up of W8-33 steel members on top of composite decking.The top 3 residential floors to the roof level are designed containing wood stud walls, wood floor trusses, and engineered wood floor diaphragm.All of the wood stud walls are bearing walls that tie into concrete masonry shear walls which are the elevator and stairwell shafts.

 

• Construction:

The building's project delivery method is design-bid-build. The architect and general contractor for the project was Bernardon Haber Halloway with Architects PC, and Bozzuto Construction Co.  They started with design in early to mid 2014 and the building is scheduled to be move in ready by August, 2016.  The total project cost is around $35 million, but I cannot disclose important cost details by owner request.

 

• Mechanical:

This building is conditioned by a dedicated outdoor air system with split system HVAC units.  there are a total of 5 rooftop units, 8 split system units for the amenity spaces, and 3 different types of apartment units, that are feed to each residential floor.  There are seperate air filtration systems set up for the parking garage levels.

 

• Electrical:

The electrical system is fed from one 1500 KVA transformer at street level to a main 4000 A Main switchboard located in the lower level parking garage.  This system is a 277/180V system, and each floor of the building has panels that serve each area of that level, based on the needs of that building plan.

 

• Lighting:

The luminaires in the building are 180V. Many of the lamps used throughout the building are flourescents, with T-8 and T-5 rapid-start lamps used in the majority of spaces. Compact Flourescent 4-Pin lamps are also utilized. In addition to flourescents, HID pulse-start and ceramic lamps are used. The building's exterior features many different types of lights, including HID's, compact flourescents.

 

Engineering Support Systems:

• Fire Protection:

The fire protection is designed differently for each occupancy type/material type for the building.  IBC 2009/2012 and the local fire code was used in the development of the standards for fire hour ratings.  The 2 parking garage levels are rated at a minimum of 4 hours, the public amenity spaces are rated at a minimum of 2 hours, but were designed to 4 hours, and the residential areas are set at a 2 hour minimum rating.