地址: Silverthorne, CO 

建筑面积: 4,130 sq. meters

竣工日期: April 2000

能源利用: Green Strategies

Wall Insulation

Design to avoid thermal bridging when using light-gauge steel for building shell

Achieve a whole-wall R-value of 15 or greater

Solar Cooling Loads

Shade south windows with overhangs

Daylighting for Energy Efficiency

Use south-facing windows for daylighting

Design an open floor plan to allow exterior daylighting to penetrate the interior

Use large exterior windows and high ceilings to increase daylighting

Use skylights for daylighting

Non-Solar Cooling Loads

Provide high-low openings to remove unwanted heat by stack ventilation

Provide an open floor plan and openings located to catch prevailing breezes

Use ceiling fans to improve comfort at higher temperatures

Reduce internal heat gains by improving lighting and appliance efficiency

Interior Design for Light

Use light colors for surfaces and finishes

Photovoltaics

Use building-integrated photovoltaics (PV) to generate electricity on-site

Foundation Insulation

Use sub-slab insulation with a minimum insulating value of R-10

High-performance Windows and Doors

Use windows with a whole-unit U-factor less than 0.32 (greater than R-3.0)

Heating Systems

Use hot water heat distribution

Lighting Controls

Use modulating photoelectric daylight sensors

Use occupancy sensors

Roof Insulation

Achieve a whole-roof R-value greater than R-35

节水方案: Site modifications were necessary. A small creek flowed through the center of the property; with the help of the Corps of Engineers, this creek was redirected around the periphery of the property. As a result, the total amount of wetlands on the site was expanded by 40%. The creek and wetland vegetation added along the back side of the property also helped create a natural buffer between the BigHorn Center and residential areas.

Green Strategies

Sites with Excessive Impacts

Avoid building on or degrading wetlands

材料选择: Limited amounts of raw wood were used in the construction. Fiber-cement siding was chosen for the exterior because of its longevity, durability, and fire-retardant characteristics. Cabinets, countertops, and interior signage were constructed with fiberboard made from soy-fiber and wheat-straw board. Low-VOC paints and tile or carpet adhesives were used throughout the building.

Diversion of Construction & Demolition Waste

Cardboard, wood, and steel waste was diverted from the landfill throughout the construction process. Wood waste was separated. Employees used the scrap wood where possible during construction. The remaining wood was taken home by employees who own wood stoves. Cardboard and steel recycling dumpsters were provided on-site to facilitate recycling. Approximately 15% of the construction waste (by weight) was diverted from the landfill.

 室内环境品质: All primary areas of the BigHorn Center have access to cross-ventilation and a steady supply of fresh air. In the retail area, open doors at the front and back of the building, a large receiving bay garage door, and single-sided operable windows in the offices on the ground floor combine with the single-sided clerestory operable windows to create a natural stack ventilation system throughout the occupied areas. Cooling set points control the opening of the operable windows in the clerestory. Solar heat gain in the summer is minimized by clerestory roof overhangs which divert direct summer light. Early-hour opening of the operable windows adds cooler air to the space in the summer. Additional air circulation is provided by ceiling fans.

Green Strategies

Thermal Comfort

Use glazing with a low Solar Heat Gain Coefficient

Visual Comfort and The Building Envelope

Use large exterior windows and high ceilings to increase daylighting

Use skylights and/or clerestories for daylighting

Incorporate light shelves on the south facade

Visual Comfort and Interior Design

Select only white to midrange finishes to maximize reflectance of light

Visual Comfort and Light Sources

Provide illumination sensors

Ventilation and Filtration Systems

Provide occupants with access to operable windows

Below Grade Rainwater and Groundwater

Use landscaping and grading to divert water from the building

Reduction of Indoor Pollutants

Use only very low or no-VOC paints

Use only very-low-VOC carpet adhesives