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
| Apr 24, 2013
More positive momentum for Architecture Billings Index
All regions and building sectors continue to report positive business conditions
| Apr 24, 2013
North Carolina bill would ban green rating systems that put state lumber industry at disadvantage
North Carolina lawmakers have introduced state legislation that would restrict the use of national green building rating programs, including LEED, on public projects.
| Apr 24, 2013
Los Angeles may add cool roofs to its building code
Los Angeles Mayor Antonio Villaraigosa wants cool roofs added to the city’s building code. He is also asking the Department of Water and Power (LADWP) to create incentives that make it financially attractive for homeowners to install cool roofs.
| Apr 23, 2013
Building material innovation: Concrete cloth simplifies difficult pours
Milliken recently debuted a flexible fabric that allows for concrete installations on slopes, in water, and in other hard to reach places—without the need for molds or mixing.
| Apr 23, 2013
Architects to MoMA: Don't destroy Williams/Tsien project
Richard Meier, Thom Mayne, Steven Holl, Hugh Hardy and Robert A.M. Stern are among the prominent architects who on Monday called for the Museum of Modern Art to reconsider its decision to demolish the former home of the American Folk Art Museum.
| Apr 22, 2013
Top 10 green building projects for 2013 [slideshow]
The AIA's Committee on the Environment selected its top ten examples of sustainable architecture and green design solutions that protect and enhance the environment.
| Apr 19, 2013
Is LED lighting keeping its promises?
Lighting experts debate the benefits, drawbacks, and issues related to specifying LED fixtures.
| Apr 19, 2013
Must see: Shell of gutted church on stilts, 40 feet off the ground
Construction crews are going to extremes to save the ornate brick façade of the Provo (Utah) Tabernacle temple, which was ravaged by a fire in December 2010.
| Apr 18, 2013
Survey seeks info from managers of high-tech facilities
The International Institute for Sustainable Laboratories (I2SL), and Laney College in Oakland California, a National Science Foundation-funded Building Efficiency for a Sustainable Tomorrow (BEST) Center, are collaborating to identify education and training needs and strategies for high-tech facility operators.