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 CBF Merrill Center
| 开发商: |
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容积率: |
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| 地址: |
Annapolis, MD |
建筑面积: |
2,970 sq. meters |
| 竣工日期: |
December 2000 |
高度: |
2-story building |
| 能源利用: |
Energy issues were considered in the design of the Headquarters. The building was sited in order to take advantage of southern solar exposure as well as prevailing winds for natural ventilation. Daylighting is emphasized by large windows, clerestories, and an open interior design.
The south wall of the center uses photovoltaic panels to produce energy on-site. Solar panels on the roof heat water for indoor use. Geothermal wells are used for heating in the winter and cooling in the summer.
A sophisticated total energy management system monitors and controls energy use in the building. The system alerts employees when windows should be opened. Other windows are opened and closed automatically. The system also monitors daylight levels, adjusting electric lighting as needed.
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| 选址和节水方案: |
In construction, the building incorporated a "cradle-to-cradle" rather than "cradle-to-grave" philosophy. This philosophy requires consideration of all materials not only for what they are made of, but what they can be made into at the end of their useful lives.
All existing structures on the construction site were recycled (concrete from original foundations is now being used as road bed fill, for example). Materials were selected for recycled content (galvanized siding made from cans, cars, and guns; interior fabrics; and rubber flooring). Likewise, materials from renewable or regenerable resources were incorporated (cork flooring comes from the bark of the cork oak tree which can be harvested without killing the tree and regenerates in 7 to 9 years). All wood was from renewable resources (the main foyer’s bamboo flooring is harvested from plants that regrow in approximately 3 years).
Roof and wall enclosures use Structurally Insulated Panels (SIPS). These use high R-value insulating foam in place of conventional wood studs and rafters, resulting in a high performance building envelope using a fraction of the wood of conventionally framed structures. Parallel strand timber beams from new growth trees, harvested and quickly regenerated, provide timber stronger than conventional wood. More than 50 percent of the building materials came from a 300-mile radius to reduce environmental costs associated with travel.
Diversion of Construction & Demolition Waste
Existing structures on the site were deconstructed rather than demolished and all materials were auctioned, salvaged, or recycled. The existing foundations were chipped and used as road base. Seven loads of chipped concrete were hauled off-site to be reused. With regard to construction waste, all cardboard, metals, concrete, cmu, asphalt, and land-clearing debris were recycled.
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| 室内环境品质: |
The center employs composting toilets in place of conventional flush toilets. When combined with other water-efficient appliances and native landscaping, the result is a 90+% reduction in water use over an otherwise comparable conventional office building.
The center captures and reuses rainwater and uses a bioretention filter to treat oil and other pollutants in runoff from the pervious parking area. |
| 材料选择: |
Natural ventilation is used whenever possible, made more effective by a carbon dioxide monitor and automatically controlled operable windows. Additionally, efforts were made to limit the amount of toxic materials introduced to the indoor environment in the first place. VOC-free paints joined natural materials such as cork, linoleum, and bamboo in an effort to create a healthy working environment.
The building design incorporates extensive daylighting and appropriate shading as well as views of the Chesapeake Bay to maximize the visual comfort of employees.
Green Strategies
Entry of Pollutants
Design entry to facilitate removal of dirt before entering building
Avoid carpet and other hard-to-clean floor surfaces near entry
Visual Comfort and Interior Design
Design open floor plans to allow exterior daylight to penetrate to the interior
Ventilation and Filtration Systems
Provide occupants with access to operable windows
Below Grade Rainwater and Groundwater
Raise the building up on piers
Reduction of Indoor Pollutants
Use only very low or no-VOC paints
Specify prefinished wood or bamboo flooring
Avoid wood products made with urea-formaldehyde binder
Building Commissioning for IEQ
Use a comprehensive commissioning process to ensure that design intent is realized
Maintenance for IEQ
Design isolated storage closet for cleaning and maintenance products |
| 设计创新: |
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