N. Aspinall Federal Building & U.S. Courthouse Modernization|
Architect of Record
The Beck Group
1807 Ross Avenue, #500, Dallas, TX 75201
Westlake Reed Leskosky
1422 Euclid Avenue, #300, Cleveland, OH 44115
Location: Grand Junction, Colorado Design Build: June 2010
Construction Period: Mar 2011 to Jan 2013 Total Square Feet:
41,600 Site: .75 acre.
Number of Buildings: One.
Building Size: Basement, 10,400; first floor, 10,400; second
floor, 10,400; third floor, 10,400; total, 41,600 square feet.
Building Height: Basement, -11’; first floor, 15’4”; second
floor, 11’; each additional floor, 11’; floor to floor, 11’; penthouse,
9’; total, 53’.
Basic Construction Type: Renovation. Foundation: Existing.
Exterior Walls: Existing. Roof: Membrane. Floors:
Concrete, wood, existing. Interior Walls: Metal stud drywall.
Structural, Mechanical, Electrical, Plumbing Engineer
LEED/Sustainable Design Consultant: Westlake Reed Leskosky - 1422
Euclid Avenue, #300, Cleveland, OH 44115
Design Build Contractor: The Beck Group - 1001 17th Street,
#PL100, Denver, CO 80202
Construction Manager: Jacobs Technology, Inc. - 501 North
Broadway, St. Louis, MO 63102
Civil Engineer: Del-Mont Consultants, Inc. - 125 Colorado Avenue,
Montrose, CO 81401
Commissioning Agent: ME Group, Inc. - 707 17th Street, #3000,
Denver, CO 80202
Modernization of the Wayne Aspinall Federal Building and U.S. Courthouse
preserves historic character while transforming the landmark into one of
the most energy efficient federal buildings in the country.
The Design-Build approach acknowledged the federal government’s goal to
be carbon-neutral by 2030, and creates a “green proving ground”
demonstrating how to potentially make an existing historic building
perform at net-zero energy, 17 years ahead of schedule.
Funded by ARRA, the LEED® Platinum certified project transforms the 1918
structure into an innovative sustainable model. The design aims to be
GSA’s first Site Net-Zero Energy facility on the National Register.
Building Physics Analysis was used to study space thermal comfort,
natural ventilation, daylighting, envelope thermal performance,
renewable energy potential, and whole building energy performance. To
achieve net-zero energy goals, monitoring is critical, with building
performance monitored to occupant level. Lighting, receptacle use, HVAC
equipment loads, and carbon dioxide levels are monitored with data
integrated on a lobby dashboard. Surplus energy will be exported to the
utility’s power grid.
Sustainable strategies include a roof canopy-mounted 123 kW photovoltaic
array (generating electricity on-site to power 15 average homes),
increased building insulation, and dedicated ventilation and variable
refrigerant flow systems with 32-well passive geo-exchange system for
heating and cooling. The building is on a highly restricted site, which
limited placement of photovoltaic system to rooftop application. The
roof was encumbered by elevator/stair penthouse and major HVAC
equipment. The residual un-shaded roof area was inadequate for the
quantity of photovoltaic equipment required to achieve Site Net-Zero
Energy, resulting in placement of photovoltaic panels atop a new,
elevated “canopy” with a very thin profile, whose underside is sheathed
in metal. Due to historic significance of the building’s exterior, the
canopy was set back as far as possible from the principal south facade
(allowing an array of un-shaded solar panels on the south side of the
original roof), and carefully positioned relative to classical west and
east facades. The project team’s early partnership with the City’s
Preservation Board aided in the City writing to SHPO to support the
proposed canopy and ramp design, ultimately allowing the team to move
forward. The relationship also helped GSA get approval to install 12 of
the geo-exchange wells in the City’s adjacent alleyways.
Originally designed under Treasury supervising architect Wetmore, the
three-story multi-use building houses U.S. District Courts and various
federal agencies. The project restores spatial experience and historic
character of lobby and public corridors, avoids exposed infrastructure,
and maintains high plaster ceilings through its circulation and at
perimeter wall of the historic shell. Lobby design includes replacement
of historic fixtures based on Wetmore’s design, restores historic
floors, and repurposes the west portion as both tenant and visitor
amenity. On upper floors, reconfiguration of (non-original) fire walls
and doors between elevator/stair lobby and corridors creates an open
layout and restores continuity in circulation present in the building’s
early life. A new security station and exterior accessible ramp were
added. Interior renovations include spaces occupied by governmental
agencies and comprehensive infrastructure replacement.
LEED® Points Achieved 86 Total
Energy & Atmosphere
Materials & Resources
Indoor Environmental Quality 13
Innovation & Design Process 5
Regional Priority Credits