STRUCTURAL OPTION
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Building Envelope:
ROOF SYSTEM
The main roof employs a Single-Ply EPDM system, which consists of a 4” layer of tapered rigid insulation fastened directly to the concrete roof slab below, and a rubber-like membrane material adhered to the insulation. A series of roof drains and downspouts provide the necessary drainage of accumulated water. Where necessary for access to mechanical systems, plaza deck pavers are utilized and serve as the wear course. The canopies also employ this roofing system, the only difference being that they attach to metal roof deck below. This type of roofing systems is one of the most economical choices for simple flat-roof structures.
EXTERIOR WALL SYSTEMS
Several different wall systems are utilized in the building, which gives architectural interest and is helpful in ‘breaking’ up sizeable facades.
The first floor exterior walls feature a combination of both Architectural Precast and a 3” Drainable Exterior Insulation and Finish System, otherwise known as Drainable EIFS. Multiple shades of each are used to accent the various focal points. These wall finishing systems are supported by an 8” metal stud wall (studs @16” o.c.) with R-21 batt insulation faced with a 5/8” layer of moisture-resistant exterior sheathing. On the most publicly viewed façade, along Brambleton Avenue, is an intermittent glazed curtain wall system with an aluminum frame containing insulated vision and spandrel glass. Storefront Glazing systems are used for both lobby entrances. There are several punched windows located in the less conspicuous areas. The mechanical areas including the mezzanine level on the first floor also use architectural aluminum louvers for proper ventilation. The first floor, at approximately 20’ in height, is ‘crowned’ with a band of contrasting EIFS, distinguishing it from the guest floors above.
Floors 2 through 7 consists of a 6” metal stud wall (studs @16” o.c.) with sound-attenuating batt insulation and a similar Drainable EIFS configuration as described above. A series of operable punched windows provides natural daylight and ventilation for both living and sleeping areas within the guest suites.
Floors 8 and 9 are pronounced by a continuous Glazed Curtain Wall system with an aluminum frame containing both insulated vision and spandrel glass. A ‘crown’ of EIFS, similar to that between the first and second floors, trims the top of the building for a nice finished look. This system is also employed to conceal any rooftop mechanical equipment.
Emergency stairwells at the East and West ends of the building consist of reinforced concrete walls with a 3 5/8” metal stud wall, 5/8” layer of moisture-resistant exterior sheathing, and a self-healing air and moisture barrier. The exterior of the stairwells are finished with a combination of the three systems described above: Architectural Precast, Drainable EIFS, and a Glazed Curtain Wall.