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
| May 11, 2012
Chapter 10 Action Plan: 18 Recommendations for Advancing Sustainability in Reconstructed Buildings
We offer the following recommendations in the hope that they will help step up the pace of high-performance building reconstruction in the U.S. and Canada. We consulted many experts for advice, but these recommendations are solely the responsibility of the editors of Building Design+Construction. We welcome your comments. Please send them to Robert Cassidy, Editorial Director: rcassidy@sgcmail.com.
| May 11, 2012
Chapter 9 The Key to Commissioning That Works? It Never Stops
Why commissioning for existing and renovated buildings needs to be continuous to be effective.
| May 11, 2012
Chapter 8 High-Performance Reconstruction and Historic Preservation: Conflict and Opportunity
What historic preservationists and energy-performance advocates can learn from each other.
| May 11, 2012
VFA to acquire Altus Group's Capital Planning division
Strategic move strengthens VFA's facilities capital planning market osition in North America.
| May 11, 2012
Betz promoted to senior vice president for McCarthy’s San Diego Office
He will oversee client relations, estimating, office operations and personnel as well as integration of the company’s scheduling, safety and contracts departments.
| May 11, 2012
CRSI appoints Brace chairman
Stevens also elected to board of directors and vice-chair.
| May 11, 2012
Dempster named to AIA College of Fellows
Altoon Partners’ technical and construction services leader honored for his contributions.
| May 11, 2012
AIA launches education and training portal
New portal to host Contract Documents training, education resources in one convenient place.
| May 10, 2012
Chapter 7 When Modern Becomes Historic: Preserving the Modernist Building Envelope
This AIA CES Discovery course explores the special reconstruction questions posed by Modern-era buildings.
| May 10, 2012
Chapter 6 Energy Codes + Reconstructed Buildings: 2012 and Beyond
Our experts analyze the next generation of energy and green building codes and how they impact reconstruction.