Design wins 2013 Green Building Award
The Virginia US Green Building Council (JRGBC) honored these offices with the 2013 Green Building Leadership Award. Last year, the United States Green Building Council certified the project LEED Gold.
Taking a 1960′s, 25,000 square foot building in Richmond, Virginia, Dennis Kowal Architects transformed the existing building into a modern office environment and training center. With only small additions at both ends and an imaginative infilling of an underutilized open courtyard, the total gut-renovation put back an energy efficient and low VOC office environment.
Even interior offices have views and daylight thanks to the new plan layout (see below) and use of “borrowed lights”, windows that open to adjacent rooms with natural light. Outside offices have operable shades to control the light and glare-free indirect lighting fixtures are used in the major spaces. The changes in lighting and equipment reduced the energy use by 15% and occupant satisfaction and comfort has risen dramatically from the pre-renovation building.
Low-flow plumbing fixtures reduced water usage by 30% and save 34,000 gallons of water per year. All heating, ventilation, and air-conditioning equipment and controls were removed and replaced with a new variable system with energy recovery technology. The deteriorated single-pane window units were replaced with double-pane, thermally insulated units with low-emissivity coating to reduce solar heat gain and the skylight is made of a highly insulated translucent sandwich panel. The existing metal halide site lights were upgraded to new light-emitting diode (LED) fixtures and new vehicle recharging stations were added to the parking lot.
The general contractor salvaged and recycled 87 percent of all construction and demolition debris, used regionally-manufactured building materials containing recycled content, and purchased wood products harvested from sustainably-managed forests. Indoor air quality was protected from the start of construction and later by use of low-emitting building materials and furniture. The owner is continuing with this effort using green cleaning products and equipment.
Even the old and leaking flat roof has been covered with a hipped standing seam metal roof that reflects the sunlight and lowers the heat island effect through the use of a reflective solar paint.
The project was a team effort with Dennis Kowal Architects as the principal designer and disability expert. DKA partnered with Mosley Architects of Richmond to provide the construction documents and LEED submissions. Colorado Architect, John Dickerson, was the project’s hearing impaired consultant. Together, Dennis Kowal Architects, office building designers, and specialist in the design for the blind and physically handicapped, designed this award winning plan for the renovated administrative offices and training center for the Virginia Department of the Blind and Visually Impaired center in Richmond Virginia.
Dennis Kowal Architects designs office environments with the occupants in mind.
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Exxon goes Green in Style!
The Lobby of Exxon Energy Systems uses natural Vermont slate on the floor to absorb the heat from the low angle winter sun. The heat is redistributed to the offices by heat pumps. Visitors get a great view inside and out and are sometimes unaware of the natural energy systems working around them.
Who says sustainable design must be colorless and drab? When Exxon Energy Systems wanted a 100,000 square foot office/research building at Princeton’s Forrestal Center, Dennis J. Kowal, AIA, LEED AP, combined a strong design with energy saving features. The four story building is sheathed in insulated metal panels and special window systems which are different at each sun exposure: north, south, east, and west. On the exposures where summer sun is not an issue, the walls are flat and the windows are in the plane of the exterior wall. But windows exposed to the strong summer sun are designed to allow the skydome light in and keep the solar gain out. The windows are permanently tipped away from the direct solar gain (see photo above which is similar to the offices) which provides natural shading in the summer. The low angle winter sun is able to shine into the space, warm the surfaces and floors and warm the offices.
Another feature of the design includes incremental heat pumps which reduce the length of duct work runs; thereby reducing embodied energy in the manufacture process and consumption of extra resources. Because the window system is designed to bring in natural light without the glare and summer solar gain, the offices are less dependent on artificial lighting and thereby conserve energy.
A geothermal system was designed for both the air conditioning and heating of the building, but the Department of Environmental Protection declined the permit because it was a new concept to them. Did we tell you…..this building was designed and constructed over 25 years ago! … ahead of its time in concept and development. Today, geothermal permits are routine and day-lighting is all the rage, but this is one of the projects that started it all.
|The deep profile of this southern exposure allows for super-insulation and great energy efficiency.
||The wall section acts like a periscope bouncing natural light in and keeping direct solar gain out. Day-lighting reduces the energy cost for artificial lighting and increases occupant satisfaction and efficiency.
| The four story building mixes window profiles based on exposure to the summer sun.
||Natural light is bounced into the offices (note the bright sloped wall above the window) while glare and heat remain outside.
Dennis Kowal Architects integrates master planning, space planning, building design and Interior Design to a variety of corporate and industry clients.
The site design introduced concepts that were new at the time, such as bioswales, that used vegetation and root systems to purify parking lot runoff before returning the water to the ecosystem and pervious pavers at the entry plaza that naturally absorbed rainwater.
Also, mature trees were brought into the parking lot to provide substantial shade to the vehicles which reduced off-gassing of car fuel tanks and reduced the heat-island effect of the pavement. The Exxon building is still a stellar example and precursor to the LEED concepts that are just starting to take hold in America.
Dennis Kowal Architects help corporations reduce building energy costs while making them look good!