American Psychological Association (APA) Headquarters
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American Psychological Association (APA) Headquarters: a linear planter was installed along the walkway.  Photo Courtesy of Capitol Greenroofs.Project Name: American Psychological Association (APA) Headquarters
Year: 2014
Owner: American Psychological Association
Location: Washington, DC, USA
Building Type: Corporate
Type: Intensive
System: Single Source Provider
Size: 2500 sq.ft.
Slope: 1%
Access: Accessible, Private
Submitted by: Capitol Greenroofs

Designers/Manufacturers of Record:
Architect: Gensler Associates
Contractor: HITT Contracting
Greenroof System: Henry Intensive Greenroof
Installation: Capitol Greenroofs
Landscape Architect: Oehme, van Sweden & Associates, Inc.
System Design: Decking tiles, metal planters, and perennial planting areas
Decking Tiles: Bison Innovative Products
Roofing Contractor: Consolidated Waterproofing
Planters, Edging & Planter Benches Manufacturer: Ore Inc.
The APA Headquarters seating area and greenroof plantings on the east terrace overlook Union Station; Photo Courtesy of Capitol Greenroofs.American Psychological Association (APA) Headquarters greenroof; Photo Courtesy of Capitol Greenroofs. APA Headquarters; Photo Courtesy of Capitol Greenroofs.
The American Psychological Association (APA) is the largest scientific and professional organization representing psychology in the United States. APA is the world's largest association of psychologists, with nearly 130,000 researchers, educators, clinicians, consultants and students as its members. Their mission is to advance the creation, communication and application of psychological knowledge to benefit society and improve people's lives.

In an effort to reduce energy consumption, maximize recycling and contribute to a healthier environment, in April 2014 a second greenroof was added to APA properties at their headquarters at 750 First Street. NE, Washington, DC., which qualified for the DDOE grant program (see below). The first greenroof was constructed in 2008 at their commercial rental property at 10 G Street, N.E. - see the Project Profile in The Greenroof & Greenwall Projects Database. In 2012, the Environmental Protection Agency rated both buildings in the top 10 percent of buildings in the United States with the lowest carbon footprint. In addition, APA purchased a utilities plan that uses 100 percent wind energy and significantly reduces APA's carbon dioxide emissions for both buildings.
 APA Headquarters; some junipers and yews were selected to add to the massing and help define the space adjacent to the handicap ramp. Photo Courtesy of Capitol Greenroofs. The custom aluminum planters were installed with built in IPE benches. Photo Courtesy of Capitol Greenroofs.
Since a roof renovation was in order for the APA HQ in early 2014, an intensive greenroof was deemed appropriate. Rebate funding was provided by the District Department of the Environment through a program administered by the Anacostia Watershed Society; many private companies were also involved which made this project successful.

The design at the American Psychological Association Headquarters building was focused on how greenroofs benefit people's mental well being. Installed by Capitol Greenroofs, the system design called for plenty of seating and relaxation with decking tiles, metal planters, and perennial planting areas. A linear planter was installed along the walkway. The strip of plants forms a clear edge along the parapet wall. This area was primarily planted with a variety of herbaceous perennials and some small woody shrubs. In another area custom aluminum planters were installed with built-in IPE benches. This patio creates usable event space with spectacular views of the Capitol building. The wood decking tiles contrast the stone pavers and are elevated slightly to create a nicer viewing platform. A steel trellis with ceramic slats on top provide ample shade in this area.

Modern style seating areas with bright decorative accents and greenroof plantings on the east terrace overlooks Union Station. The roof garden is composed of a mixture of perennials, woody shrubs and small magnolia trees. Some junipers and yews were also selected to add to the massing and help define the space adjacent to the handicap ramp.

Site furnishings are important for creating a usable and comfortable space. The custom aluminum edge restraints hold back growing media up to 24in soil depth.

Additional thumbnail photos:

American Psychological Association (APA) Headquarters greenroof; Photo Courtesy of Capitol Greenroofs.The APA Headquarters seating area and greenroof plantings on the east terrace overlook Union Station; Photo Courtesy of Capitol Greenroofs.East terrace after having been planted one week. Planting design by Oehme Van Sweden Associates.  Photo Courtesy of Capitol Greenroofs.American Psychological Association (APA) Headquarters greenroof with plenty of seating.  Photo Courtesy of Capitol Greenroofs.American Psychological Association (APA) Headquarters: a linear planter was installed along the walkway.  Photo Courtesy of Capitol Greenroofs.
The American Psychological Association Headquarters is located at 750 First Street. NE, Washington, DC 20002; visit their website. See the Project Profile from Capitol Greenroofs along with many construction photos from their Project Gallery. Watch the 1:56 video American Psychological Association HQ - Project of the Week 6/30/14 from Greenroofs.com on the greenroofsTV channel on YouTube. Read the February 2012 Going green - APA is fostering environmental sustainability on several fronts by Tori DeAngelis in the APA Monitor on Psychology. Learn about the District of Columbia's Green Roof Rebate Program, DDOE, and the Anacostia Watershed Society. Additional information about the District Department of the Environment’s (DDOE’s) Green Roof Rebate Program is available at the DDOE Green Roof Website.

Learn about the following companies in The Greenroof & Greenwall Directory:
Bison Innovative Products and Capitol Greenroofs.
 
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