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 Brewery Block 4
| 开发商: |
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容积率: |
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| 地址: |
Portland, OR |
建筑面积: |
22,400 sq. meters |
| 竣工日期: |
May 2003 |
高度: |
10-story building |
| 能源利用: |
A variety of energy-consumption reducing measures and capabilities were employed in Block 4. These include improved glazing, daylight dimming controls, a highly efficient district chiller plant, variable-flow chilled water, night flushing, wider deadband set points in common areas, and low-temperature air distribution.
All chilled water, electricity, and gas is sub-metered to retail and larger office tenants to encourage energy accountability and conservation. The smaller tenants are not sub-metered.
The roof has an insulation value of R-30 and the floor above unheated space is R-11. In the mechanical drawings, insulation for the non-glazed areas was prescribed to be R-19; the actual insulation value is probably around R-22, however, once the thermal mass of the concrete frame, the masonry panels, and, most important, the additional 2 inches or more of curtainwall insulation (required for fire safety at the spandrels in the curtainwall) are taken into account.
Green Strategies
Solar Cooling Loads
Use south windows with a low SHGC
Daylighting for Energy Efficiency
Use building elements to redirect daylight and control glare
Non-Solar Cooling Loads
Use operable windows
Cooling Systems
Use evaporative condensers
Photovoltaics
Use building-integrated photovoltaics (PV) to generate electricity on-site
High-performance Windows and Doors
Optimize energy performance of glazing systems
HVAC Distribution Systems
Use variable frequency drives for fans
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| 选址和节水方案: |
All walls, columns, and shear walls are post-tensioned concrete. Non-concrete core walls are metal-stud framing. Exterior walls are brick panels and curtain wall, with stud frame backing and batt insulation.
A minimum of 20% of all materials used came from local and regional sources. This includes materials such as concrete, masonry, paints, and wood products, among others. All five of the Brewery Block buildings are being constructed simultaneously to take advantage of economies of scale that reduce the energy stream required to build the project; duplication among construction crews, deliveries, and staging is thereby minimized. Using local suppliers and contractors wherever possible minimized transportation energy. Products and materials with high amounts of recycled content were sought out and utilized wherever practical. Over 25% of all construction material used in the project contains recycled content. Additionally, materials that are easily recycled during tenant changes and building modifications were specified where possible.
Only low-toxicity, low-VOC paints, sealants, carpets, and adhesives were used. PVC and HCFC’s were reduced but not eliminated. Notably, Gerding/Edlen’s Senior Project Manager Dennis Wilde indicates that, "Some materials, specifically paints and other low-VOC finishes, do not have the durability of their more polluting counterparts. This is changing as more products come on line."
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| 室内环境品质: |
A 17,800-square-foot extensive ecoroof planted with drought-tolerant, native vegetation consisting primarily of sedum species is located on the fourth-floor setback. Also included are coastal strawberry and blue fescue. The ecoroof will attenuate stormwater from the lower roof and upper-level balconies on the south side and then be directed to the nearby buried Tanner Creek via underground pipe. The stormwater will enter the buried creek downstream of a sanitary diversion pipe after it goes through a manhole filtration system know as a "downstream defender." The "defender" will earn the project the LEED stormwater treatment credit and has removal efficiencies of 90% for sediments and 30% for phosphates. The remaining water will be used via vegetative uptake and evaporation. The ecoroof will handle approximately 320,400 gallons of water each year. The upper roof, and 80% of the total roof, is topped with an Energy Star roofing system.
Low-flow fixtures are used throughout the common areas of the building, resulting in a 25% reduction in water use compared to code regulations. Landscape features are designed for zero irrigation once they are established, further reducing the amount of potable water usage at each building.
Previously developed land
Green Strategies
Runoff Reduction
Design a green roof system
Water Conservation Education
Educate residents about water conservation
Low-Water-Use Fixtures
Use low-flow toilets
Managing Stormwater
Incorporate a pollutant separation/filtering system in parking lot drains
Demand for Irrigation
Select plants for drought tolerance
Site Planning
Protect and celebrate a site’s uniqueness
Provide for solar access
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| 材料选择: |
Only low-VOC paints, sealants, carpets, and adhesives were used in Block 4. Indoor air quality procedures were implemented during construction to minimize airborne contaminants from entering HVAC systems. Operable windows in office towers increase tenants’ environmental control and access to fresh air and provide a connection to the outdoors.
Smoke control in the buildings is based on the use of operable windows, using a "smoke reservoir" configuration, which eliminates the need for smoke exhaust fans and allows for downsizing generators.
Flexible floor plans enhance the ability to adapt to the tenants’ changing needs.
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