LEED (Leadership in Energy and Environmental Design) is a national rating system for developing high-performance, sustainable buildings. Developed by U.S. Green Building Council, LEED addresses all building types and emphasizes state-of-the-art strategies for sustainable site development, water savings, energy efficiency, materials and resources selection, and indoor environmental quality.
The Sampson-Hoffland Laboratories building has accumulated enough points during construction to seek gold certification – the second highest rating!
Recirculating Chilled Water: Cooling water used to remove heat from scientific instrumentation will be plumbed into the building chilled water recirculation loop rather than wasting treated city water.
Diverting Construction Waste: During demolition and construction, the crew was aiming to divert 75% of waste materials from disposal.
Local and Recycled Materials: Around 10% of the materials used in the building were sourced regionally, within 500 miles. Around 20% of the material used in the new building is made from post-consumer recycled content. That means 20% of the new building is recycled!
Low-emissivity Glass: This thin, transparent coating on the building windows reflects radiant heat, allowing heat to be reflected back into the building during the winter, and reflected away from the building during the summer.
Green Tags: Luther has purchased enough Green Tags to equal 100% of the power used by this new building. Green Tags are proof of renewable energy production.
Low Volatile Organic Compounds: These harmful compounds exist in materials all over our buildings – in paints, carpets, sealants and furnishings. Materials with low volatile organic compounds were chosen for the new building.
The DOAS: The Dedicated Outdoor Air System provides the building with 100% fresh air while saving energy. The Sampson-Hoffland Laboratories uses four enthalpy wheels that are positioned and rotated between a two-duct system. In one section of the duct, fresh-air flows through the wheel and in the other section of the duct building exhaust air flows through the wheel. The wheel slowly rotates between these two environments and transfers energy from one to the other. This system is estimated to save 20-25% on energy for air conditioning!
Rain Garden: Rainwater that falls on the roof and adjacent site is piped to the rain garden, where it is allowed to return to the water table rather than piped to the storm sewer and routed to the river. The plants that have deep roots were chosen for the garden to aide in allowing the water to return to the water table.
Protection of native habitat: The oak savannah that once dominated this area will be seen to the east of the building. This will provide wildlife habitat, decrease the need for mowing and maintenance, and reduce water runoff.
Parking: There are 2 preferred parking spots that are reserved for hybrids or low emission vehicles. This provides an incentive for driving a more environmentally friendly vehicle.
Alternative Transportation: To encourage bicycling as a form of transportation, this new building has a shower and changing room to accommodate hot, sweaty employees after their ride to work. Bicycle storage is located adjacent to both entrances.
Restroom water usage: The toilets are designed to maximize the efficiency of the water used on every flush. There are two settings - one for liquids and one for solids. Ultra low flow urinals and aerators also save water.
Occupancy Sensors: Ultrasonic and infrared sensors (“eyes and ears”) detect occupancy and adjust the lighting and airflow. Unoccupied rooms automatically shut the lights off and reduce the airflow for energy conservation.
Green Roof: In October 2013 a green roof was installed on the entry way to Sampson-Hoffland. The green roof is approximately 1500 square feet and helps block the sun from beating down on the roof, thus reducing the demand for air conditioning. Plants and soil in this "living roof" also reduce the risk of rainwater runoff.