Leadership in Energy and Environmental Design (LEED)
The Leadership in Energy and Environmental Design is third-party certification program and an internationally accepted benchmark for the design, construction and operation of high performance green buildings.
The intent of LEED is to provide building owners and operators with a framework for implementing practical and measurable green building designs. It comprises of a suite of rating systems for the design, construction and operation of high performance green buildings, homes and neighbourhood.
Here are some quick facts about LEED:
- Developed by USGBC in 1998, adopted by Canada in 2002
- Distinguishes the top 15% of high performance buildings, new construction projects and tenant fit-out projects
- A points-based rating system, total available points: 110*
- Internationally recognized.
- Outlines a set of performance criteria for site location & development, water and energy consumption, construction materials, indoor air quality, occupant comfort & controllability. Innovative design, construction and operational actions are rewarded.
- The following LEED Rating Systems are currently available in Canada:
- Building Design & Construction (BD+C)
- Interior Design & Construction (ID+C)/Commercial Interiors (CI)
- Existing Buildings: Operations & Maintenance (EBOM)
- Neigbourhood Development (ND)
- The following certification levels are possible under each Rating System:
*All Rating Systems except for CI, which is the first version of ID+C.
Visit the Canada Green Building Council to learn more about LEED certification in Canada.
Stage 1: LEED Design Highlights
- User and design requirements were verified against mechanical, electrical and interior design intentions to ensure they matched.
- Isotherm Engineering, the independent commissioning agent, reviewed all drawings, specifications, shop drawings and cutsheets to ensure design was sound and met user requirements.
- Integrated design process: All team members participated in a coordinated design process characterized by regular team meetings during the pre-design & design process.
- Space was designed to LEED CI version 1 requirements, targeting Silver certification.
- All exterior lights retrofitted with full cut-off shields to reduce light pollution.
- 16.4% lighting power density reduction below ASHRAE/IESNA Standard 90.1-2004 using the space-by-space method. Project’s total reduced watts: 4345 W
- Specifying occupancy sensors for private offices and meeting rooms.
- Specifying perimeter daylight sensors for each floor.
- 90% of occupants have task lighting, including all private offices and workstations.
- Design to meet ASHRAE 62.1-2004 ventilation requirements.
- Designed to meet ASHRAE 55-2004 thermal comfort requirements.
- 90% of regularly occupied spaces have access to views.
Stage 1: LEED Construction Highlights
- 81.84% of all new and used electronics & appliances are Energy Star rated.
- 84% of construction waste was diverted from landfill and incinerators.
- 34% of all furniture was reused.
- 14% of all construction materials & furniture contained recycled content.
- 45% of all construction materials & furniture was regionally manufactured.
- 75.7% of all wood was Forest Stewardship Council (FSC)-certified.
- 100% of all adhesives, sealants, paints, coatings, carpet, composite wood & systems furniture was
low-emitting, according to the following Standards:
- South Coast Air Quality Management District (SCAQMD) Rule 1168
- Green Seal Standard GS-36
- Green Seal Standard GS-11
- Green Seal Standard GS-03
- South Coast Air Quality Management District
- Carpet and Rug Institute (CRI) Green Label Plus Program
- Greenguard Indoor Air Quality Program
Stage 1: Operational Highlights
- Installation and start-up of new mechanical & electrical equipment was independently verified by Isotherm Engineering, a commissioning agent.
- Isotherm Engineering ensured building operators were adequately trained on new equipment and were provided with the full O&M manuals and as-built drawings.
- Implemented a lamp purchasing policy which limits lamp mercury content.
- Implemented an appliance & electronics purchasing policy which ensures all applicable equipment is Energy Star rated.
- Implemented a furniture purchasing policy which ensures new furniture is low-emitting, contains recycled content and is regionally manufactured.
Stage 2: LEED Design Highlights
- Retrofit of all building washrooms
- 46.44% water use reduction for PEO spaces or a total of 2,328 L saved/day
- Retrofit of all base building mechanical equipment, including:
- Heat Pumps
- Electrical Relay Panels
- Electrical & gas consumption savings
- Installation of BAS to allow for continuous thermal comfort monitoring