As a company, DPR Construction has a deep-seated commitment to sustainability, its employees, and the communities it serves. A couple of years ago, when the lease for its Phoenix office came up, the firm seized the opportunity to create an ultra-green environment for its 101-person Phoenix office and field staff.
Working with A/E firm SmithGroupJJR, DPR converted a vacant 16,533-sf one-time “adult-themed boutique” in the city’s reemerging Discovery Triangle into a LEED-NC Platinum office, one that is on target to be the first net-zero commercial office building in Arizona.
The Building Team—including sustainability consultant DNV KEMA and consulting structural engineer PK Associates—forged numerous paths to energy reduction. They used an 87-foot zinc-clad solar chimney to create a convection current that draws air into the building through four evaporative cooling “shower towers” equipped with internal misters and showerheads. The pre-cooled air then flows through the open office space, and hot air exhausts back through the chimney.
PROJECT SUMMARY
DPR CONSTRUCTION, PHOENIX REGIONAL OFFICE
Phoenix, Ariz.Building Team
Submitting firm: SmithGroupJJR (architect/MEP engineer), in conjunction with DPR Construction (owner/developer/GC)
Structural engineer: PK Associates Consulting Structural Engineers
Sustainability consultant: DNV KEMA Energy & SustainabilityGeneral Information
Size: 16,533 sf
Construction cost: $3,762,000
Construction time: February 2011 to October 2011
Delivery method: Design-build
Twelve eight-foot-diameter fans, three oversized roll-up doors, and 87 operable windows installed along the east and north façades further support the building’s passive cooling system. Eighty-two solar optical tubes bring additional daylight into the workspace, helping to cut artificial lighting by 70%.
LEDs provide exterior site lighting, but the team decided against using LEDs on the interior because they did not meet the project goal of a maximum 10-year return on investment. A phantom-load reduction “vampire” switch cuts off 90% of plug loads at night.
The tally: Net energy use intensity was cut to 28.85 kBtu/sf/year; lighting power density was reduced to 0.96 watts/sf. Net-zero energy was achieved through the installation of a 79.6 kW PV-covered canopy over half the parking lot.
To further its commitment to the community, DPR has opened its building to host meetings for local business groups, students, and nonprofit organizations. +
Related Stories
| Nov 8, 2013
Net-zero bellwether demonstrates extreme green, multifamily style
The 10-unit zHome in Issaquah Highlands, Wash., is the nation’s first net-zero multifamily project, as certified this year by the International Living Future Institute.
| Nov 8, 2013
Walkable solar pavement debuts at George Washington University
George Washington University worked with supplier Onyx Solar to design and install 100 sf of walkable solar pavement at its Virginia Science and Technology Campus in Ashburn, Va.
| Nov 6, 2013
PECI tests New Buildings Institute’s plug load energy use metrics at HQ
Earlier this year, PECI used the NBI metrics to assess plug load energy use at PECI headquarters in downtown Portland, Ore. The study, which informed an energy-saving campaign, resulted in an 18 percent kWh reduction of PECI’s plug load.
| Nov 5, 2013
Net-zero movement gaining traction in U.S. schools market
As more net-zero energy schools come online, school officials are asking: Is NZE a more logical approach for school districts than holistic green buildings?
| Nov 5, 2013
New IECC provision tightens historic building exemption
The International Energy Conservation Code has been revised to eliminate what has been seen as a blanket exemption for historic buildings.
| Nov 5, 2013
Living Building Challenge clarifies net-zero definitions and standards
The Living Building Challenge has released the Net Zero Energy Building Certification to provide clearer definitions regarding what net zero really means and how it is to be achieved.
| Nov 5, 2013
Oakland University’s Human Health Building first LEED Platinum university building in Michigan [slideshow]
Built on the former site of a parking lot and an untended natural wetland, the 160,260-sf, five-story, terra cotta-clad building features some of the industry’s most innovative, energy-efficient building systems and advanced sustainable design features.
| Nov 4, 2013
Architecture and engineering industry outlook remains positive on all major indicators
While still below pre-recession levels, all of the key indicators in the latest Quarterly Market Forecast (QMF) report from PSMJ Resources remain in positive territory.
| Nov 1, 2013
CBRE Group enhances healthcare platform with acquisition of KLMK Group
CBRE Group, Inc. (NYSE:CBG) today announced that it has acquired KLMK Group, a leading provider of facility consulting, project advisory and facility activation solutions to the healthcare industry.
| Oct 31, 2013
74 years later, Frank Lloyd Wright structure built at Florida Southern College
The Lakeland, Fla., college adds to its collection of FLW buildings with the completion of the Usonian house, designed by the famed architect in 1939, but never built—until now.
