a review of the new leadership in energy and environmental design v3 green building rating system
TRANSCRIPT
1aAAa2. A review of the new Leadership in
Energy and Environmental Design v3 green
building rating system
Ralph T. Muehleisen
Ph.D, P.E., LEED A.P., INCE Board Certified
Civil, Architectural, and Environmental Engineering
Illinois Institute of Technology
Results of Licensure Survey
• Members of TCAA, TCN, and INCE were asked to complete a very short survey: – Are you a licensed architect?
– Are you a licensed PE?
– Are you a LEED AP?
– Are you INCE Board Certified?
• There were 282 respondents and – 2 licensed architects
– 111 licensed PEs
– 23 LEED AP
– 90 INCE Board Certified
– 209 people who wanted in on the gift certificate raffle
1aAAa2: LEED v3
Leadership in Energy & Environmental Design®
A leading-edge system for designing, constructing, operating and certifying the world’s greenest buildings.
1aAAa2: LEED v3
What is LEEDs ???
• Leeds is a city in West Yorkshire, England with a
450,000 people and about 3,000,000 in the entire
metro area.
– LEED, the building rating system has no “s” at the end
1aAAa2: LEED v3
What is LEED ???
• LEED is a rating system for the construction,
performance, and operation of buildings
– Rating is based on points awarded on estimated and/or
measured building performance in a variety of categories
• LEED is *NOT*
– a Building Code
• Although some cities and states do require LEED certification
of buildings as part of their municipal code
– a Design Standard
• Although it does utilize and require compliance with many
industry standards as part of the rating
– a Building Product
• Although USGBC calls the rating systems “products”, you
cannot simply purchase a LEED rating
1aAAa2: LEED v3
LEED Rating Systems
• There are several different rating systems for
different categories of buildings
1aAAa2: LEED v3
LEED NC
• LEED for New Construction Rating
System is for most new building
constructions or major renovations
– office buildings
– high-rise residential buildings
– government buildings
– recreational facilities
– manufacturing plants
– laboratories (for now).
• Most LEED rated buildings are rated
under LEED NC 1aAAa2: LEED v3
LEED for Schools
• LEED for Schools is a rating
system for K-12 schools
– This is separate from LEED NC to
acknowledge the unique needs of
school spaces and children’s health
issues
• Differences from LEED-NC
include
– Classroom Acoustics
– Mold Prevention
– Master Planning
– Differing Site Requirements
1aAAa2: LEED v3
Other LEED Products
• LEED EB/OM: Existing Buildings: Operations and Maintenance – LEED for older buildings with a focus on operation,
maintenance, and performance verification
• LEED CS: Core and Shell – LEED for structure, envelope and the HVAC system of a
multitenant building
• LEED CI: Commercial Interiors – LEED for the tenant spaces of multitenant buildings
• LEED for Homes – LEED for Single Family Homes
• LEED ND: Neighborhood Development – LEED for site and infrastructure of a neighborhood
development
1aAAa2: LEED v3
Not Quite Ready for Prime Time …
• LEED for Retail
– Focus on tenants or owners of retail spaces
– has passed public comment period and member ballot
vote and should be released on Earth Day (Thursday)
• LEED for Healthcare
– Separate from NC to acknowledge unique needs of
healthcare facilities
– Has significant acoustic requirements
• Those are mostly required of all healthcare facilities now
because they are in the new AIA Healthcare facility guidelines
(Thanks David and Greg!!!!)
– Has public comment phase is done but I do not know
about the member ballot phase
1aAAa2: LEED v3
Categories
Points are awarded for performance in a number of
broad categories:
• Indoor Environmental Quality (EQ)
• Materials and Resources (MR)
• Energy and Atmosphere (EA)
• Sustainable Sites (SS)
• Water Efficiency (WE)
• Innovation in Design (ID)
• Regional Priority (RP)
1aAAa2: LEED v3
Prerequisites and Credits
• Each category has a list of prerequisites and
available point credits
• All prerequisites in all categories must be met
before any level of certification is awarded
– That’s why they are called prerequisites
– Prerequisites (in my opinion) simply make sure the
building is not a poor design, they do not mean that
you have good design.
• Credits are awarded for enhanced performance
– The level of certification depends upon the number of
credits awarded
1aAAa2: LEED v3
Example Prereq and Credit
• Prereq: Minimum Energy Efficiency
– Building must meet a 10% improvement over the
baseline energy use according to Appendix G of
ANSI/ASHRAE 90.1-2007
• Note: in v3 just meeting ASHRAE 90.1 is no longer
sufficient
• Credit: Optimize Energy Efficiency
– 1 to 19 points are awarded for having 12-48%
improvement over baseline energy use according to
Appendix G of ANSI/ASHRAE 90.1-2007
1aAAa2: LEED v3
LEED Points By Category (for NC)
• The emphasis of points, by category, has changed in v3 to emphasize reducing the carbon footprint so SS, EA, and WE have been boosted while EQ and MR have been reduced and RP has been added
1aAAa2: LEED v3
EQ23%
MR19%
SS18%
WE8%
EA24%
ID8%
LEED v2
EQ14%
MR12%
SS23%WE
10%
EA32%
ID5%
RP4%
LEED v3
Sustainable Sites (SS)
• Sustainable Sites relates to selection and design of building sites to encourage best practice measures including – Prereq: Construction activity pollution control
– Credit: Maximizing open space and restoring habitat
– Credit: Connection to community and development density
– Credit: Brownfield redevelopment
– Credit: Alternative transportation
– Credit: Stormwater management
– Credit: Heat Island Control
– Credit: Light Pollution
1aAAa2: LEED v3
Water Efficiency
• Water efficiency relates to design of
building systems to reduce the use and
waste of potable water.
– Prereq: Water Use Reduction
– Credit: Water Efficient Landscaping
– Credit: Innovative Wastewater
Technologies
– Credit: Enhanced Water Use Reduction
1aAAa2: LEED v3
Energy and Atmosphere
– Prereq: Fundamental System Commissioning
– Prereq: Min Energy Performance
– Prereq: Fundamental Refrigerant Management
– Credits: Optimize Energy Performance
– Credit: On-Site Renewable Energy Generation
– Credit: Enhanced Commissioning
– Credit: Enhanced Refrigerant Management
– Credit: Measurement and Verification
– Credit: Green Power
1aAAa2: LEED v3
• Energy and Atmosphere relates to building energy
use and associated environmental impacts
Materials and Resources
• Material and Resources rewards sustainable selection and procurement of building materials, furnishings, and operations
1aAAa2: LEED v3
– Prereq: Recycling
– Credit: Building Reuse (during renovation)
– Credit: Construction Waste Management
– Credit: Materials Reuse (during renovation)
– Credit: Recycled Content (of building materials)
– Credit: Regional Materials
– Credit: Rapidly Renewable Materials
– Credit: Certified Wood
Indoor Environmental Quality (EQ)
• Indoor Environmental Quality rewards design to
provide enhanced indoor environmental quality
1aAAa2: LEED v3
– Prereq: Minimum Air Quality
– Prereq: Environmental Tobacco Smoke Control
(ETS)
– Credit: Outdoor Air Monitoring
– Credit: Increased Ventilation Rates
– Credits: Construction IAQ Plans
– Credits:Low-Emitting Materials
– Credit: Indoor Chemical and Pollutant Control
– Credit: Controllability of Building Systems
– Credit: Thermal Comfort
– Credit: Daylight and Views
Innovation in Design (ID)
• Innovation in Design recognizes exemplary
performance in LEED categories and/or
innovative performance in categories not covered
by LEED
1aAAa2: LEED v3
• Credit: Innovation in Design
• Credit: Exemplary Performance
• Credit: LEED AP on Design Team
Regional Priority (RP)
1aAAa2: LEED v3
Regional Priority (RP)
• The new RP credit gives up to 4 bonus credits for
a design that achieves credits that have been
selected as most important for that region
– These are not, state by state or city by city, but vary
according to zip code to reflect differences between
rural, suburban, and urban situations and even for
differences within those settings.
– Example: In Arizona, water efficiency and renewable
energy are two credits that are considered regional
priorities.
1aAAa2: LEED v3
Rating Levels
The LEED rating that is achieved
depends upon the number of
points awarded
• LEED Certified 40-50 points
• LEED Silver 50-60
• LEED Gold 60-80
• LEED Platinum Over 80
• All the rating systems now use
100 point scales for basic
categories + 10 pts for ID and RP
1aAAa2: LEED v3
Summary of Major Changes in v3
• Introduction of RP credits
• All rating systems are 100 points with up to 10 bonus points for ID and RP – Certification levels are consistent through all rating systems
• Points have been redistributed to strongly emphasize the reduction in building carbon footprint and fossil fuel energy use – Increase in SS and EA categories with a reduction in MR and EQ
• Universal Credits – Similar credits in different rating systems now have the same
requirements, documentation and point allocation
• LEED APs must now do continuing education to maintain accreditation
1aAAa2: LEED v3
Questions?
1aAAa2: LEED v3