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Sanjay Gangal
Sanjay Gangal
Sanjay Gangal is the President of IBSystems, the parent company of AECCafe.com, MCADCafe, EDACafe.Com, GISCafe.Com, and ShareCG.Com.

John W. Olver Transit Center in Greenfield by Charles Rose Architects Inc

 
October 25th, 2012 by Sanjay Gangal

Article source: Charles Rose Architects Inc

Situated in historic Greenfield’s business district and constructed of traditional materials that complement the town’s stately brick buildings, the John W. Olver Transit Center represents a significant technological departure from the past: With its dramatically limited emissions, it anticipates the future and President Obama’s executive order requiring that all new federal buildings achieve net-zero by 2030. Embedded in the building’s design are numerous strategies for energy conservation and generation. For example, the textured brick cladding the western side is a respectful nod to Greenfield’s past, but its main purpose is green: a high-tech strategy in managing the building’s exposure to afternoon sun. In parts, the brick dissolves and the façade becomes a kind of screen; these patterns control the amount of heat entering the building’s interior in summer and winter.

Entry and second floor offices that have views of Greenfield

  • Architects: Charles Rose Architects Inc
  • Project: John W. Olver Transit Center
  • Location: Greenfield, MA  USA
  • MEP, FP Engineers: ARUP
  • Structural Engineer: RSE ASSOCIATES, INC
  • Civil Engineer: NITSCH ENGINEERING
  • Landscape Architect: GROUNDVIEW
  • Building Envelope Consultant: BET

View to the southwest from Bank Row

The transit center pushes far beyond standard industry designations for “sustainable” design and represents a noteworthy achievement in green building practices in Massachusetts and the region. Buildings in the US typically use 39% of our energy, 70 % of electricity and account for 38% of carbon emissions. The transit center is designed to cut those numbers to zero and will produce the energy it uses in a sustainable way: through solar and geothermal sources, and a boiler on site fueled by wood pellets, a local lumber-industry byproduct.

View at dusk, looking south

Key features:

  • 22 geothermal wells buried 405 feet deep
  • 98 kilowatt ground-mounted photovoltaic array, 7,300 square feet
  • On-site 750 MBH (750,000 Btus per hour) boiler fueled by wood pellets
  • Air-conditioning provided by an active “chilled beam” system
  • Solar wall preheats fresh air in winter prior to intake
  • Second-stage preheating via ground source heat-pump system

Bus waiting area and view of copper shading screen

  • Air-handling unit incorporates variable-speed fans and energy recovery wheel
  • Daylight modeling used to determine optimal placement of windows and skylights
  • All artificial light controlled by system incorporating occupancy sensors, photocells and dimming control
  • LED light fixtures provided for parking lots
  • Low-flow water fixtures yielding approximately 35% water savings
  • Annual energy consumption estimated at 35 kBtu/square foot

Entry and outdoor waiting area

Achieving net-zero, particularly in a large-scale building like the transit center, requires close collaboration between architects and engineers from the earliest design phase, says Charles Rose, design principal of Somerville-based Charles Rose Architects. Energy conservation is a critical topic in the early design phase. The team looks strategies that reduce heating and electric loads. We develop designs that project natural light deep into the building to reduce artificial lighting. We also look closely at materials for cladding and for places to super-insulate.

Sidewalk to future train platform and bioretention garden

“Zero-net-energy design has revolutionized the way we work, “ Rose says. “We are creating buildings that are highly integrated. In other words, the only way to get to net-zero is by integrating mechanical and electrical engineering into the conceptual design phase. It’s a fundamentally different way of designing a building. Our mechanical engineers are serious collaborators now. That’s very important.”

View of wood pellet boiler at left and photovoltaic array to the right

North elevation and entry

Public entry plaza with illuminated seating

Site Plan

Green Systems Plan

Green Systems Diagram

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Categories: Building, Commercial Building

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