地址: New York, NY

建筑面积: 149,000 sq. meters

竣工日期: January 2000

高度: 48-story building 

能源利用: In order to provide the greatest amount of daylight penetration yet minimize solar heat gain, large windows were chosen—7 feet high (2.1 m) in a 9-foot (2.7 m) ceiling—as well as high visible-light transmission glass (0.40 and 0.66) with a good shading coefficient (0.30). These high-performance windows let in light without affecting inside air temperature. They also maximize daylighting, lowering electric lighting needs.

Direct-fired natural-gas absorption chiller/heaters, located on the 49th floor, were chosen over electrical and steam-driven chillers for heating and air conditioning. This choice was made in light of the fuel source profile of the northeast, the low emissions associated with natural gas, and the avoidance of transmission loss with direct-fired equipment. The high floor location of the heavy equipment in combination with the hat truss structure aids the structural performance of the building, although it complicated construction scheduling.

Extra levels of insulation were specified. Additional thermal insulation was detailed for spandrels, roofs, etc.

Two 200 kW fuel cells are located in the 4th floor outside air plenum with a separate exhaust. The building is using the electricity generated from these two fuel cells to cover almost 100% of its base load late at night and approximately 5% of the building's electrical needs during the day.

Integrated "thin-film" photovoltaics were used in approximately 60 feet (18 m) of spandrel glass on the south and east facades of the top nine floors of the building as a demonstration test. The peak output from these panels is only about 15 kW but will give The Durst Organization hands-on experience with photovoltaic technology in an urban high-rise application.

Individual floor-by-floor fan units operate only when tenants are using their spaces. State-of-the-art, energy-efficient, fiber-optic outdoor signage is being used atop the building. LED exit signs, occupancy sensors in seldom-occupied spaces, and high-performance fixtures with central controls in public spaces reduce the building's energy use.

节水方案: Green Strategies

Development Impacts

Minimize building footprint

Low-Water-Use Fixtures

Use automatic faucet controls for lavatories

Low-Impact Siting

Select an already-developed portion of a site for new development

Site buildings where lowest biodiversity is present

Select building sites that make use of existing infrastructure

材料选择: Green Products Used

Access Flooring Systems

Carpet Recycling

Cork Flooring

Fabric Wall Covering

Lighting Control Systems

Low-VOC, Materials-Efficient Office Furniture

Recycled-Aluminum Ceiling

Recycling System for Multistory Buildings

Zero-VOC Acrylic Latex Interior Paint

An underfloor air system operates via the access flooring system.

Green Strategies

Building Deconstruction

Identify items to be reused from existing structure

Recycle materials to be discarded from existing structure

Job Site Recycling

Investigate local infrastructure for recycling

Require a waste management plan from the contractor

Require that subcontractors keep their wastes separate

Recycling by Occupants

Design a physical in-house recycling system

Post-Consumer Recycled Materials

Use wallboard from manufacturers that utilize gypsum from job-site scraps

Specify light-gauge steel framing with highest recycled content

室内环境品质: Green Strategies

Entry of Pollutants

Locate outdoor air intakes away from pollution sources

Keep positive pressure in the building

Visual Comfort and The Building Envelope

Choose interior and exterior glazing to maximize daylight transmission

Visual Comfort and Interior Design

Design open floor plans to allow exterior daylight to penetrate to the interior

Place primarily unoccupied spaces away from daylight sources

Ventilation and Filtration Systems

Specify ventilation rates that meet or exceed ASHRAE Standard 62-1999

Direct Exhaust from High-source Locations

Provide local exhaust ventilation for rooms with high-emitting sources

Reduction of Indoor Pollutants

Use only very low or no-VOC paints

Maintenance for IEQ

Specify routine maintenance for HVAC system and check performance of system

Specify use of only nontoxic cleaning products

 

设计创新: In 1995, Four Times Square was the first speculative office building to be developed in New York City in almost a decade. It has 48 stories of occupied space and was the first project of its size and financial structure (multi-tenanted and not owner-operated) in the U.S. to adopt standards for energy efficiency, sustainable materials, and indoor environmental quality, as well as for responsible construction, operations, and maintenance practices.Energy efficiency and indoor air quality were given special consideration in Four Times