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LEED v4 Insights Prezi

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Tim Murray

on 29 August 2013

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Transcript of LEED v4 Insights Prezi

LEED v4 Insights
theme design by Dóri Sirály for Prezi
LEED versions overlap for 2 years
Can Use LEED 2009 until June 1, 2015

Reverse Contribution to Global Climate Change
Enhance Individual Human Health, Wellbeing and Vitality
Protect and Restore Water Resources
Protect Biodiversity and Preserve Ecosystem Services
Promote Highest and Best Use of Resources
Promote a Regenerative Economy
Promote Social, Cultural, Community Health and Quality of Life

LEED v4 Impact Categories


LEED v4 Weightings

Each credit was reviewed for the following criteria:
1. Relative Efficacy – How does compliance path relate to other credits in the rating system?
2. Duration – how long will benefits last?
3. Control – does it rely on human interaction or is it a passive system?

Warehouses and Distribution Centers
LEED for Homes Weighted to 100 points
Homes Mid-Rise
Hospitality
EB for Schools
EB for Retail
Data Centers



New Market Sectors

New credit – stands alone Healthcare Prerequisite

Intent: Implement an integrative process that supports high performance, cost-effective project outcomes through analyses of key systems interrelationships before decisions are made on building form and throughout the design process.

Requirements : Starting in pre-design, and continuing throughout the design phases, identify analyze, at a minimum, the following three areas:

Energy-Related Systems (Simple Box Energy Model)
Water-Related Systems
Cost Analysis
Site Selection (Interiors, retail and Hospitality only)


Integrative Process Credit

Intent
To encourage project location in areas with development constraints and promote the health of the surrounding area.

Requirements

Option 1. Historic district (2 points)
Locate the project on an infill location in a historic district.

OR
Option 2. Priority designation (2 points)
Locate the project on one of the following:
a site listed by the EPA National Priorities List; a Federal Empowerment Zone site; a Federal Enterprise Community site; a Federal Renewal Community site; a Department of Justice Weed and Seed Strategy Community; a Department of the Treasury Community Development Financial Institutions Fund Qualified Low-Income Community (a subset of the New Markets Tax Credit Program); a site in a U.S. Department of Housing and Urban Development’s Qualified Census Tract (QCT) or Difficult Development Area (DDA); or
A local equivalent for projects outside the United States.

OR
Option 3. Brownfield remediation (3 points)
Locate on a project site where soil or groundwater contamination has been identified, and where the local, state, or national authority (whichever has jurisdiction) requires its remediation. Perform remediation to the satisfaction of that authority.


LTc3: HIGH PRIORITY SITE


Requirements

Option 1. Surrounding density (2–3 points)
Locate on a site whose surrounding existing density within a ¼-mile radius of the project boundary meets the values in Table 1. Use either the “separate residential and nonresidential densities” or the “combined density” values.

AND/OR

Option 2. Diversity of uses (1–2 points)
Construct or renovate a building or a space within a building such that the building’s main entrance is within a ½-mile walking distance of the main entrance of four to seven (1 point) or eight or more (2 points) existing and publicly available diverse uses.



LTc4: SURROUNDING DENSITY AND DIVERSE USES


Intent
To reduce pollution by promoting alternatives to conventionally fueled automobiles

Requirements
Same as 2009: 5% of preferred space reserved for Green Vehicles
In addition to preferred parking for green vehicles, meet one of the following two options for alternative-fuel fueling stations:

Option 1. Electric vehicle recharging
Install electrical vehicle supply equipment (EVSE) in 2% of all parking spaces used by the project.
OR
Option 2. Liquid, gas, or battery facilities
Install liquid or gas alternative fuel fueling facilities or a battery switching station capable of refueling a number of vehicles per day equal to at least 2% of all parking spaces.




LTc8: GREEN VEHICLES


LEED Globalization

…or local equivalent
Metric equivalents
REACH (Registration, Evaluation, Authorisation and Restriction of Chemical substances)
CEN (European Committee for Standardization)


Prerequisite 2: Environmental Site Assessment (Healthcare and Schools Only)
Credit 7: Places of Respite (Healthcare only)
Credit 8: Direct Exterior Access (Healthcare only)
Intent
To assess site conditions before design to evaluate sustainable options and inform related decisions about site design.

Requirements
Complete and document a site survey or assessment1 that includes the following information:

Topography.
Hydrology.
Climate.
Vegetation.
Soils.
Human use.
Human health effects.

The survey or assessment should demonstrate the relationships between the site features and topics listed above and how these features influenced the project design; give the reasons for not addressing any of those topics.


SScr1: SITE ASSESSMENT


SScr3: OPEN SPACE


Intent
To create exterior open space that encourages interaction with the environment, social interaction, passive recreation, and physical activities.

Requirements
Provide outdoor space greater than or equal to 30% of the total site area (including building footprint). A minimum of 25% of that outdoor space must be vegetated (turf grass does not count as vegetation) or have overhead vegetated canopy. The outdoor space must be physically accessible and be one or more of the following:

a pedestrian-oriented paving or turf area to accommodate outdoor social activities;
a recreation-oriented paving or turf area that encourage physical activity;
a garden space that provides passive recreation opportunities and/or year-round visual interest;
a garden space dedicated to community gardens or urban food production;
preserved or created habitat that meets the criteria of SS Credit Site Development—Protect or Restore Habitat and also includes elements of human interaction




(Not in LEED-HC)

WaterSense, a partnership program by the U.S. Environmental Protection Agency, seeks to protect the future of our nation's water supply by offering people a simple way to use less water with water-efficient products, new homes, and services.
Products and services that have earned the WaterSense label have been certified to be at least 20 percent more efficient without sacrificing performance.



No FTE calculations now, just flow rates.

Table 1. Points for reducing water use

WEcr2: INDOOR WATER USE REDUCTION

Intent
To conserve water used for cooling tower makeup while controlling microbes, corrosion, and scale in the condenser water system.

Requirements
For cooling towers and evaporative condensers, conduct a one-time potable water analysis, in order to optimize cooling tower cycles.

Limit cooling tower cycles to avoid exceeding maximum values for any of these parameters. No more than 10 cycles.

WEcr 3: COOLING TOWER WATER USE

Intent
To support water management and identify opportunities for additional water savings by tracking water consumption.

Requirements
Install permanent water meters for two or more of the following water subsystems, as applicable to the project:

Irrigation.
Indoor plumbing fixtures and fittings.
Domestic hot water.
Boilers.
Reclaimed water.
Other process water such as humidification systems, dishwashers, clothes washers, pools, and other subsystems using process water

HEALTHCARE ONLY: Install water meters in any of the following five: Purified water systems; filtered backwash water; dietary; laundry; laboratory; central sterile; hydrotherapy; surgical suite; hydronic system makeup; cold-water makeup for domestic hot water systems.

WEcr 4: WATER METERING

Intent
To support the design, construction, and eventual operation of a project that meets the owner’s project requirements for energy, water, indoor environmental quality, and durability.

Requirements
Commissioning Process Scope
Complete the following commissioning (Cx) process activities for mechanical, electrical, plumbing, and renewable energy systems and assemblies, in accordance with ASHRAE Guideline 0-2005 and ASHRAE Guideline 1.1–2007 for HVAC&R Systems, as they relate to energy, water, indoor environmental quality, and durability.
Requirements for exterior enclosures are limited to inclusion in the owner’s project requirements (OPR) and basis of design (BOD), as well as the review of the OPR
The review of the exterior enclosure design may be performed by a qualified member of the design or construction team (or an employee of that firm) who is not directly responsible for design of the building envelope.
Project teams that intend to pursue EA Credit Enhanced Commissioning should note a difference in the CxA qualifications: for the credit, the CxA may not be an employee of the design or construction firm nor a subcontractor to the construction firm.

PREREQUISITE 1: FUNDAMENTAL COMMISSIONING AND VERIFICATION

IRequirements
Option 1. Whole-building energy simulation
Demonstrate an improvement of 5% for new construction, 3% for major renovations, or 2% for core and shell projects in the proposed building performance rating compared with the baseline building performance rating based on ANSI/ASHRAE/IESNA Standard 90.1–2010….

Option 2. Prescriptive compliance: ASHRAE 50% Advanced Energy Design Guide

Option 3. Prescriptive compliance: Advanced Buildings™ Core Performance™ Guide

PREREQUISITE 2: MINIMUM ENERGY PERFORMANCE

Intent
To support energy management and identify opportunities for additional energy savings by tracking building-level energy use

Requirements

Install new or use existing building-level energy meters, or submeters that can be aggregated to provide building-level data representing total building energy consumption (electricity, natural gas, chilled water, steam, fuel oil, propane, biomass, etc). Utility-owned meters capable of aggregating building-level resource use are acceptable.

Commit to sharing with USGBC the resulting energy consumption data and electrical demand data (if metered) for a five-year period beginning on the date the project accepts LEED certification or typical occupancy , whichever comes first. At a minimum, energy consumption must be tracked at one-month intervals.

PREREQUISITE 3: BUILDING-LEVEL ENERGY METERING

EA CREDIT 4: DEMAND RESPONSE

Intent: To increase participation in demand response technologies and programs that make energy generation and distribution systems more efficient and increase grid reliability.

Requirement: Evaluate building systems and equipment for participation in a demand response program. On-site electricity generation does not meet the intent of this credit.

Case 1: DR program is available: Enroll in a one-year commitment for at least a 10% annual peak demand reduction of 20kW whichever is greater.

Case 2: DR program is not available: Have infrastructure in place, develop a plan for 10% shed of annual peak demand and participate in at least on full test of the DR plan.

Intent
To further support the design, construction, and eventual operation of a project that meets the OPR for energy, water, indoor environmental quality, and durability.

Requirements (up to 6 points)
Commissioning authority
The CxA must have documented commissioning process experience and may be a qualified employee of the owner, an independent consultant, or a disinterested subcontractor of the design team.
Option 1. Enhanced systems commissioning (3-4 points)
Path 1: Enhanced commissioning (3 points)
Complete the following commissioning process (CxP) per ASHRAE Guideline 0-2005 and ASHRAE Guideline 1.1-2007
OR Path 2: Enhanced and monitoring-based commissioning (4 points)
Fulfill Path 1, plus add meter tracking, processes for correction and maintenance
AND/OR Option 2. Envelope commissioning (2 points)
Per NIBS Guideline 3-2012


EA CREDIT 1: ENHANCED COMMISSIONING


Requirements
Engage in a contract for qualified resources that have come online since January 1, 2005, for a minimum of five years, to be delivered at least annually. The contract must specify the provision of at least 50% or 100% of the project’s energy from green power, carbon offsets, or renewable energy certificates (RECs).
Green power and RECs must be Green-e Energy certified or the equivalent. RECs can only be used to mitigate the effects of Scope 2, electricity use.
Carbon offsets may be used to mitigate Scope 1 or Scope 2 emissions on a metric ton of carbon dioxide–equivalent basis and must be Green-e Climate certified, or the equivalent.
For U.S. projects, the offsets must be from greenhouse gas emissions reduction projects within the United States.
Determine the percentage of green power or offsets based on the quantity of energy consumed, not the cost.


CREDIT 7: GREEN POWER AND CARBON OFFSETS


Prerequisite. 3: PBT source reduction - mercury (Healthcare)
Credit 5: PBT source reduction–mercury (Healthcare)
Credit 6: PBT source reduction-lead, cadmium, copper (Healthcare)
Credit 7: Furniture and medical furnishings (Healthcare)
Credit 8: Design for flexibility (Healthcare)

PREREQUISITE 2: C&D WASTE MANAGEMENT PLANNING

Intent
To reduce construction and demolition waste disposed of in landfills and incineration facilities by recovering, reusing, and recycling materials.

Requirements
Develop and implement a construction and demolition waste management plan:
Establish waste diversion goals for the project by identifying at least five materials (both structural and nonstructural) targeted for diversion. Approximate a percentage of the overall project waste that these materials represent.
Specify whether materials will be separated or commingled and describe the diversion strategies planned for the project.

Provide a final report detailing all major waste streams generated, including disposal and diversion rates.

Alternative daily cover (ADC) does not qualify as material diverted from disposal. Land-clearing debris is not considered construction, demolition, or renovation waste that can contribute to waste diversion.

MR CREDIT 1: BUILDING LIFE-CYCLE IMPACT REDUCTION

Intent
To encourage adaptive reuse and optimize the environmental performance of products and materials.

Requirements:

Option 1. historic building reuse (5 points)
Option 2. renovation of abandoned or blighted building (5 points)
Option 3. building and material reuse (1–4 points) 25%=2 pts; 50%=3pts; 75%=4 pts
Option 4. whole-building life-cycle assessment (3 points) conduct a life-cycle assessment of the project that demonstrates a minimum of 10% reduction in at least three of the six impact measures listed below, one of which must be global warming potential.
global warming potential (greenhouse gases)
depletion of the stratospheric ozone layer
acidification of land and water sources
eutrophication
formation of tropospheric ozone
depletion of nonrenewable energy resources


MR Credit 2: Building product disclosure and optimization -environmental product declarations

Intent
To encourage the use of products and materials for which life-cycle information is available and that have environmentally, economically, and socially preferable life-cycle impacts. To reward project teams for selecting products from manufacturers who have verified improved environmental life-cycle impacts

Requirements
Achieve one or more of the options below, for a maximum of 2 points:
Option 1. environmental product declaration (EPD) (1 point)Use at least 20 different permanently installed products that meet one of the disclosure criteria below:

Product-specific declaration
Industry-wide (generic) EPD
Product-specific Type III EPD
USGBC approved program



Product-specific declaration.
Products with a publicly available, critically reviewed life-cycle assessment conforming to ISO 14044 that have at least a cradle to gate scope.
Products with a product-specific declaration are valued as one quarter (1/4) of a product for the purposes of calculation.

Industry-wide (generic) EPD.
Products with third-party certification (Type III), including external verification, in which the manufacturer is explicitly recognized as a participant by the program operator.
EPD must conform to ISO 14025, 14040, 14044, and EN 15804 or ISO 21930 and have at least a cradle to gate scope.
Products with industry-wide EPDs are valued as one half (1/2) of a product for purposes of calculation.

Product-specific Type III EPD.
Products with third-party certification (Type III), including external verification.
EPD must conform to ISO 14025, 14040, 14044, and EN 15804 or ISO 21930 and have at least a cradle to gate scope.
Products with Product-specific Type III EPDs are valued as one whole product for purposes of calculation.



Product description: Manufacturer has free rein to describe the product and the company.
Material content: List of ingredients that tells you what is in the product and where the materials come from.
Product manufacturing: Description of how the product is put together.
Delivery and Installation: Describes how the product is meant to be installed, toxicity risks for installers.
Use stage: Information about environmental impacts from maintenance; it may cover indoor emissions.
Singular effects: Information on how fire, water and other damage may affect durability and service life.
End of Life: How the product is typically dis[posed of, but this depends on local recycling resources available.
Life-Cycle Assessment results: Explains how the LCA was conducted and summarizes the result.
Product Category Review verification: Relevant PCR for data collection.
References: Relevant standards, laws, literature for creating the EPD.

What’s in an Environmental Product Declaration
?

AND/OR
Option 2. Multi-attribute optimization (1 point)
Use products that meet at least one of the attributes below for 50%, by cost, of the total value of permanently install products in the project. Products will be valued as below:

USGBC approved program

Certifications that verify impact reduction below industry average in at least three of the following:
global warming potential (greenhouse gases); depletion of the stratospheric ozone layer; acidification of land and water sources; eutrophication; formation of tropospheric ozone; and depletion of nonrenewable energy resources.
Products sourced within 100 miles (160 km) of the project site are valued at 200% of cost.
Structure and enclosure materials may not constitute more than 30% of the value of compliant building products.
For the scope of this credit, furniture, piping, pipe insulation, ducts, duct insulation, conduit, plumbing fixtures, faucets, showerheads, and lamp housing may be included.

MR Credit 3: Building product disclosure and optimization –sourcing of raw materials

Intent
To encourage the use of products and materials for which life cycle information is available and that have environmentally, economically, and socially preferable life cycle impacts. To reward project teams for selecting products verified to have been extracted or sourced in a responsible manner.

Requirements:
Option 1. raw material source and extraction reporting (1 point)

AND/OR

Option 2. leadership extraction practices (1 point)





Requirements
Option 1. raw material source and extraction reporting (1 point)

Use at least 20 different permanently installed products from manufacturers that have publicly released a report from their raw material suppliers including the following:
Raw material supplier extraction locations
A commitment to long-term ecologically responsible land use
A commitment to reducing environmental harms from extraction and/or manufacturing processes
A commitment to meeting applicable standards or programs voluntarily that address responsible sourcing criteria

Products must be sourced from at least 5 different manufacturers.

Products will be valued as follows:
Manufacturer declared reports are valued as one half (1/2) of a product.
Third-party verified corporate sustainability reports (CSR) including environmental impacts of extraction operations and activities associated with the manufacturer’s product and the product’s supply chain, are valued as one whole product for purposes of calculation.

Acceptable frameworks for the CSR include the following:

Global Reporting Initiative (GRI) Sustainability Report; Organisation for Economic Co-operation and Development (OECD) Guidelines for Multinational Enterprises; U.N. Global Compact; ISO 26000; USGBC approved program

Option 2. leadership extraction practices (1 point)

Use products that meet at least one of the responsible extraction criteria below for at least 25% of the total value of permanently installed building products in the project:
Extended producer responsibility. Products purchased from a manufacturer that participates in an extended producer responsibility program or is directly responsible for extended producer responsibility. Products valued at 50% of their cost.
Bio-based materials. Bio-based products must meet the Sustainable Agriculture Network’s Sustainable Agriculture Standard. Bio-based raw materials must be tested using ASTM Test Method D6866 and be legally harvested, as defined by the exporting and receiving country.
Wood products. Wood products must be certified by the Forest Stewardship Council or USGBC-approved equivalent.
Materials reuse. Reuse includes salvaged, refurbished, or reused products.
Recycled content. Recycled content is the sum of postconsumer recycled content plus one-half the preconsumer recycled content, based on cost.
USGBC approved program.

Products sourced within 100 miles of the project site are valued at 200% of their cost.
Structure and enclosure materials may not constitute more than 30% of the value of compliant building products. An individual product may be counted in more than one attribute category.

For the scope of this credit, furniture, piping, pipe insulation, ducts, duct insulation, conduit, plumbing fixtures, faucets, showerheads, and lamp housing may be included.

90% of FSC forests are outside U.S.
USGBC Australia, Spain and Italy accept other certification standards
BREEAM, CASBEE, IgCC accept other standards
FSC does not support research funding or training.


What are the arguments against FSC only?

MR Credit 4: Building product disclosure and optimization – material ingredients

Intent
To encourage the use of products and materials for which life-cycle information is available and that have environmentally preferable life-cycle impacts. To reward project teams for selecting products for which the chemical ingredients in the product are inventoried using an accepted methodology and for selecting products that minimize the use and generation of harmful substances. To reward raw material manufacturers who produce products verified to have improved life-cycle impacts.

Requirements:
Option 1. material ingredient reporting
Option 2: material ingredient optimization
Option 3: Product Manufacturer Supply Chain Optimization


Option 1. material ingredient reporting

Use at least 20 different permanently installed products from manufacturers that use any of the following programs to demonstrate the chemical inventory of the product:

Manufacturer Inventory. The manufacturer has published complete content inventory for the product following these guidelines:
A publicly available inventory of all ingredients identified by name and Chemical Abstract Service Registration Number (CASRN)
Materials defined as trade secret or intellectual property may withhold the name and/or CASRN but must disclose role, amount and GreenScreen benchmark as defined in GreenScreen v1.2.
Health Product Declaration. The end use product has a published, complete Health Product Declaration with full disclosure of known hazards in compliance with the Health Product Declaration open Standard.
Cradle to Cradle. The end use product has been certified at the Cradle to Cradle V2 Basic level or Cradle to Cradle v3 Bronze level.
USGBC approved program.

Compliant products must have chemicals inventoried to at least 0.1% (1000 ppm)

Products must be sourced from at least 5 different manufacturers.


Option 2: material ingredient optimization

Use products that document their material ingredient optimization using the paths below for at least 25%, by cost, of the total value of permanently installed products in the project:

USGBC approved program.

GreenScreen v1.2 Benchmark. Products that have fully inventoried chemical ingredients to 100 ppm that have no Benchmark 1 hazards:
If any ingredients are assessed with the GreenScreen List Translator, value these products at 100%
If all ingredients are have undergone a full GreenScreen Assessment, value these products at 150%

Cradle to Cradle v2 Certified. End use products are certified Cradle to Cradle. Products will be valued as follows:
Cradle to Cradle Gold: 100% of cost
Cradle to Cradle Platinum: 150% of cost

Cradle to Cradle v3 Certified. End use products are certified Cradle to Cradle. Products will be valued as follows:
Cradle to Cradle Silver: 100% of cost
Cradle to Cradle Gold or Platinum: 150% of cost

International Alternative Compliance Path – REACH Optimization. End use products and materials that do not contain substances that meet REACH criteria for substances of very high concern. If the product contains no ingredients listed on the REACH Authorization1 or Candidate2 list, value at 100% of cost

Option 3: Product Manufacturer Supply Chain Optimization

Project Team: Use building products that are sourced from product manufacturers who procure raw materials from suppliers meeting criteria below for at least 25%, by cost, of the total value of permanently installed products in the project.

Manufacturers: Engage in validated and robust safety, health, hazard, and risk programs. Document at least 99% by weight of the ingredients used to make the building product or building material are sourced from companies with independent third party verification of the following along the manufacturer supply chain:

Processes are in place to communicate and transparently prioritize chemical ingredients along the supply chain according to available hazard, exposure and use information to identify those that require more detailed evaluation
Processes are in place to identify, document, and communicate information on health, safety and environmental characteristics of chemical ingredients
Processes are in place to implement measures to manage the health, safety and environmental hazard and risk of chemical ingredients
Processes are in place to optimize health, safety and environmental impacts when designing and improving chemical ingredients
Processes are in place to communicate, receive and evaluate chemical ingredient safety and stewardship information along the supply chain
Safety and stewardship information about the chemical ingredients is publicly available from all points along the supply chain

Same location and material availability as other MR credits.


The Lacey Act
The Lacey Act was amended with the 2008 Farm Bill for the purpose of combating illegal logging. The Lacey Act makes it unlawful to import, export, transport, sell, receive, acquire, or purchase in interstate or foreign commerce any plant, taken in violation of the laws of a U.S. State, or any foreign law that protects plants. Anyone who imports into the United States, or exports out of the United States, illegally harvested plants or products made from illegally harvested plants, including timber, as well as anyone who exports, transports, sells, receives, acquires or purchases such products in the United States, may be prosecuted. In any prosecution under the Lacey Act, the burden of proof of a violation rests on the government.

Intent
To contribute to the comfort and well-being of building occupants by establishing minimum standards for indoor air quality (IAQ).

Requirements
Meet the min. requirements of ASHRAE Standard 62.1–2010, Sec. 4–7

Monitoring
Mechanically ventilated spaces For mechanically ventilated spaces monitor outdoor air intake flow: provide a direct outdoor airflow measurement device measuring the minimum outdoor air intake flow.

Naturally ventilated spaces For naturally ventilated spaces comply with at least one of the following strategies: Provide a direct exhaust airflow measurement device capable of measuring the exhaust airflow; Provide alarms on all required openings; monitor CO2 concentrations.

Residential only In addition to the requirements above, each dwelling unit must meet the following requirements: Unvented combustion appliances not allowed; CO2 monitors in each unit; All fireplaces and stoves must have glass enclosures and pass a backdraft potential test; space and water heating must be enclosed or remote; Radon monitors if applicable.






PREREQ 1: MINIMUM INDOOR AIR QUALITY PERFORMANCE

Intent
To reduce concentrations of chemical contaminants that can damage air quality, human health, productivity, and the environment

Requirements






IEQ credit 2: LOW-EMITTING INTERIORS

Intent
To promote occupants’ productivity, comfort, and well-being by providing high-quality lighting

Requirements
Option 1. Lighting control (1 point)
For at least 90% of individual occupant spaces, provide individual lighting controls that enable occupants to adjust the lighting to suit their individual tasks and preferences, with at least three lighting levels or scenes (on, off, midlevel). Midlevel is 30% to 70% of the maximum illumination level (not including daylight contributions).

For all shared multi-occupant spaces, meet all of the following requirements:

Have in place multi-zone control systems that enable occupants to adjust the lighting to meet group needs and preferences, with at least three lighting levels or scenes (on, off, midlevel).
Lighting for any presentation or projection wall must be separately controlled.
Switches or manual controls must be located in the same space as the controlled luminaires. A person operating the controls must have a direct line of sight to the controlled luminaires.






IEQ credit 6: INTERIOR LIGHTING


Requirements
Option 2. Lighting quality (1 point)
Choose four of the following strategies:
For all regularly occupied spaces, use fixtures with a luminance of less than 2,500cd/m2 between 45 and 90 degrees from nadir.
For the entire project, use light sources with a CRI of 80 or higher.
For 75% of the total connected lighting load, use light sources that have a rated life (or L70 for LED sources) of at least 24,000 hours
Use direct-only overhead lighting for 25% or less of the total connected lighting load for all regularly occupied spaces.
For 90% of the regularly occupied floor area, meet the following thresholds for area-weighted average surface reflectance: 85% for ceilings, 60% for walls, and 25% for floors.
If furniture is included, select furniture finishes to meet the following thresholds for area-weighted average surface reflectance: 45% for work surfaces, and 50% for movable partitions.
For 75% of the regularly occupied floor area, meet an avg. ratio of wall surface or ceiling illuminance (excluding fenestration) to avg. work plane (or surface) illuminance that does not exceed 1:10.




IEQ credit 6: INTERIOR LIGHTING (cont.)

Intent
To give building occupants a connection to the natural outdoor environment by providing quality views

Requirements
Achieve a direct line of sight to the outdoors via vision glazing for 75% of all regularly occupied floor area. View glazing in the contributing area must provide a clear image of the exterior, not obstructed by frits, fibers, patterned glazing, or added tints that distort color balance.
To comply, views must have at least two of the following four criteria:
multiple lines of sight to vision glazing in different directions at least 90 degrees apart;
views that include at least two of the following: (1) flora, fauna, or sky; (2) movement; and (3) objects at least 25 feet away;
unobstructed views located within the distance of three times the head height of the vision glazing; and
views with a view factor of 3 or greater, as defined in “Windows and Offices; A Study of Office Worker Performance and the Indoor Environment.”
Views into interior atria may be used to meet up to 30% of the required area.






IEQ credit 8: QUALITY VIEWS

Views with a factor of 3 or more as defined by the Heschong Mahone Group











Intent
To provide workspaces and classrooms that promote occupants’ well-being, productivity, and communications through effective acoustic design.

Requirements
For all occupied spaces, meet the following requirements, as applicable, for HVAC background noise levels, sound isolation performance, reverberation time and reverberant noise buildup, and paging, masking, and sound reinforcement systems.

HVAC Background Noise
Achieve maximum background noise levels from HVAC systems per 2011 ASHRAE Handbook, HVAC Applications, Chapter 48, Table 1; AHRI Standard 885-2008, Table 15; or local equivalent. Calculate or measure sound levels.

Sound Isolation
Meet the composite sound transmission class (STCC) ratings listed in Table 1, or local building code, whichever is more stringent.
Example: Office: STCC=45

Reverberation Time
Meet the reverberation time requirements in Table 3.
Example: Private Office <0.6 secs







IEQ credit 9: ACOUSTIC PERFORMANCE

INNOVATION CREDITS

Still available for:
-Exemplary Performance (being developed)
-Pilot Credits (always changing)
-Above and Beyond Ideas

Deleted the
Documenting
Sustainable Cost
Impact Credit

REGIONAL
PRIORITY

Committees still
developing criteria
based on new credits









Certified 40 to 49 points
Silver 50 to 59 points
Gold 60 to 79 points
Platinum 80 to 110

Hypothetical Non-CBD 100,000 square foot Office Building
LEED 2009 = 60 points (barely Gold)
LEED v4 = 46 points (certified)

Why?:
More stringent Energy Efficiency levels (lose 4-6 points)
Green Vehicle credit requires alternative fueling stations
Rainwater and Heat Island credits are combined.
Fewer building materials have EPDs available.

LEED-CS Project Comparison: 2009 vs. v4

Tim Murray
WHR Architects
tmurray@whrarchitects.com
Full transcript