THE COMMONS AT STANTON SQUARE
WASHINGTON, D.C.
CHRISTINA KREAMER | MECHANICAL
Dr. WILLIAM BAHNFLETH
BUILDING STATISTICS
The Commons At Stanton Square
Location: Washington, D.C.
Building Occupants: Martha's Table & Community of Hope
Occupancy/Function Type: Community Building/Development
Number of Stories above grade: 2 Stories
Size: 57,000 SF
Dates of Construction: February 2017 - May 2018
Overall Project Cost: ~20 million
Project Delivery Method: Design-Bid-Build
Project Team:
Owner ○ Horning Family Fund
General Contractor ○ Whiting-Turner
Architect ○ Cox Graae + Spack Architects
MEP/FP Engineers ○ James Posey Associates
Structural Engineers ○ Linton Engineering LLC
Civil Engineers ○ Wiles Mensch Corporation
Landscape Architect ○ Landscape Architecture Bureau
Food Service ○ Nyikos Associates
Architecture:
The Commons at Stanton Square serves as a community space to promote the healthy development of children and their families. The lower level is used for storage space, mechanical, and electrical rooms. On the first floor, the program consists of activity rooms and a very large kitchen where cooking classes will be held. There is also a multipurpose room on the first floor that opens up right to the outdoor playground for the kids. On the second floor, there are meeting rooms and classrooms spaces with built in bathrooms for children. The roof consists of 2 mechanical equipment locations with a connecting green roof in between. Throughout the entire building, the colors are lively and the spaces feel welcoming.
Sustainability Features:
There is a green roof connecting the two mechanical spaces on the roof which helps with water collection and solar heat load. Also, the top sections of the aluminum curtain wall sections contain insulated spandrel glass to reduce the solar heat gain.
Applicable Codes:
International Series - 2015 Version
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International Building Code
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International Mechanical Code
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International Plumbing Code
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International Fire Code
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International Energy Code
National Electrical Code - 2015 Version
Building Enclosure:
The exterior enclosure consists of bright and colorful fiber cement panels that create a fun and engaging presence about the building. These panels are alternated with variegated brick veneer which really ties the building in to its surroundings. Fenestration around all elevations of the building consists of large low-E Insulated tempered and non-tempered glass. There are sections of aluminum curtain wall on the front entryway on the south side, part of the north and east side, and also along the stairwell.
There are 3 sections of sloped roof on the building, along with a large roof garden section. There is also a walkway between the 2 mechanical spaces on the roof which have thermoplastic membrane covering the surface.
Primary Engineering Systems
Construction:
Construction for the Commons started in February 2017 and the grand opening of the building was in June 2018, lasting about a year and 4 months. The project delivery method for this project was Design-Bid-Build with Whiting-Turner as the general contractor. The overall cost of this 57,000 SF building was around 20 million dollars with 2 floors above grade and a partial floor below ground.
Mechanical:
The HVAC system for the Commons at Stanton Square facility is comprised of variable refrigerant flow (VRF) systems for space heating and cooling with a companion 100% outdoor air energy recovery rooftop unit used for ventilation. All mechanical equipment is located on the building roof including the nine VRF heat pump units, three 100% outdoor air energy recovery units, one dedicated rooftop unit, a makeup air unit, kitchen exhaust fan, and two dedicated ductless split systems. The VRF system provides individual space temperature controls to each of the zones. Conditioned air is supplied by the energy recovery rooftop unit to meet the ventilation code. All building exhaust, except from the kitchen, is routed back to the energy recovery unit to recover the energy that is being exhausted through its enthalpy wheel and used to pre-condition the outdoor air coming in.
Lighting/Electrical:
The building has 100 percent LED lighting fixtures with a hanging pendant feature in the double height lobby. There are also occupancy sensors and daylighting sensors throughout the building to control the energy usage. In addition, the project has site lighting for pedestrian pathways and also throughout the parking lot and building mounted lighting will supplement the exterior site lighting conditions.
Power is provided through a 1200A main switchboard. The 277/480V Distribution steps down to 120/280V to serve the main panelboards. Due to the building having two tenants, there is a single electric utility service entrance that is provided with two separate electric sub-meters. This way, each tenant can be billed separately. In addition to the main power distribution system, there is also an emergency lighting inverter .
Structural:
The structural system at the Commons at Stanton Square is composed of a steel framed superstructure for the above grade levels. The gravity system specifically is mostly comprised of composite wide flange beams and girders with concrete slabs on composite metal deck. The roof framing is generally made up of mostly of K-Series joists on wide flange girders. As for the foundation, reinforced concrete walls, CMU walls, and reinforced concrete spread footings make up the system.
Fire Protection:
The Commons is fully sprinklered by a wet pipe sprinkler system. There are three sprinkler zones, with one zone per floor. There are no standpipes because the facility has a 22 foot height from the top floor to the grade location where a fire truck would be located. Lastly, there are dedicated sidewall sprinkler heads with monitored shut-off valves at the top and bottom of the elevator shaft in the elevator machine room. The fire protection zone valve assemblies are located on the partial ground floor below grade.
Telecommunications:
The telecommunications service entry cables are derived from an existing telecommunications underground ductbank. They enter the building at the ground floor level and terminate in the main telecommunications equipment room.
NEWSFEED
4/24/19 - CPEP Complete & Ready for Review
4/1/19 - Final Report Completed & Posted to CPEP
1/11/19 - Proposal Revised & Posted to CPEP
12/07/18 - Turned in Proposal & Posted to CPEP
11/16/18 - Breadth Topic Proposals
10/29/18 - Technical Report 3
10/26/18 - Project Abstract Posted to CPEP
10/01/18 - Building Statistics Posted to CPEP
09/28/18 - Technical Report 2 / Project Abstract Draft
09/14/18 - Student Bio Sketch
09/10/18 - CPEP Home Page Fully Functional / Tech Report Presentation
09/07/18 - Technical Report 1
09/04/18 - CPEP Home Page Draft
08/29/18 - Turned in Project Initiation Checklist Part 2
08/22/18 - Turned in Project Initiation Checklist Part 1
08/20/18 - Confirmed Master List Information
08/20/18 - Sent Personal Thank You Letters
08/06/18 - Obtained Project Documentation
07/09/18 - Owners Permission Received
Christina Kreamer
