IgCC vs. LEED 2009

Sheila Blake, MBA, CBO, LEED AP BD+C
PWE Code Enforcement
City of Houston
Comparison of the
2012 IgCC to
LEED 2009
Gulf Coast Green
May 2, 2013

 City of Houston is a Registered Provider with The American
Institute of Architects Continuing Education Systems
(AIA/CES). Credit(s) earned on completion of this program will be
reported to AIA/CES for AIA members. Certificates of Completion
for both AIA members and non-AIA members are available upon
request.
This program is registered with AIA/CES for continuing professional
education. As such, it does not include content that may be deemed
or construed to be an approval or endorsement by the AIA of any
material of construction or any method or manner of handling, using,
distributing, or dealing in any material or product.
 Questions related to specific materials, methods, and services will
be addressed at the conclusion of this presentation..
AIA/CES Credits
2

AIA Course Description
In October 2010, the AIA/CES system was updated with
the new CES Discovery system, in that time we have
transferred more than one million records. This new
update has made it necessary to remind us of the
AIA/CES policies and procedures, to introduce the “new”
provider ethics, and to reintroduce the AIA/CES
audits/quality assurance program. This presentation
covers those areas giving providers the opportunity to
give feedback and input.
3

AIA Learning Objectives
At the end of this program, participants will be able to:
1. Explore the differences between the IgCC and LEED
2. Identify LEED credits that contribute to IgCC compliance
for projects to obtain approval for both LEED and IgCC.
3. Discuss the opportunities to implement the IgCC as a
voluntary program or as a locally approved practice.
4. Distinguish the advantages and disadvantages of rating
systems and codes under different conditions.
4

The International Green Construction Code when
adopted by a jurisdiction requires compliance with
minimum sustainability requirements for new and
altered buildings.
This session explores the relationship with LEED
programs and examples of implementation of the
code in order to put this new code into a
framework that is more easily referenced and
therefore understood and implemented.
2012 IGCC Comparison
to LEED v3
5

IgCC LEED
Mandatory Voluntary
Enforceable – More Prescriptive More Performance
All or Nothing Compliance Levels for Ranking
Governmental with Industry Industry Committees
Final vote by govt members and Comments
Final vote by full
membership
Advantages and Disadvantages
6

FORT COLLINS, CO
Extracted portions for water and .
DALLAS
Passed Sept 2012, takes effect Sept 2013
Amended out energy, commissioning, existing bldgs
IgCC Methods of Adoption – Mandatory
7

 FLORIDA
 MARYLAND
 OREGON*
 N. CAROLINA*
 S. CAROLINA
 RHODE ISLAND
*partial adoption
 Boynton Beach, FL
 Boulder, CO
 Carbondale, CO
 Kayenta, AZ
 Keene, NH
 Phoenix, AZ
 Richland, WA
 Scottsdale, AZ
IgCC Methods of Adoption – Voluntary
8

9
1: Scope and Administration
2: Definitions
3: Jurisdictional Requirements and Life Cycle Assessment
4: Site Development and Land Use
5: Material Resource Conservation and Efficiency
6: Energy Conservation and CO23 Emission Reduction
7: Water Resource Conservation, Quality and Efficiency
8: Indoor Environmental Quality and Comfort
9: Commissioning, Operation and Maintenance
10: Existing Buildings
11: Existing Building Site Development
12: Referenced Standards
IgCC Chapters

10
A: Project Electives
B: Radon Mitigation
C: Optional Ordinance
D: Alternative Enforcement Procedures
IgCC Appendices

 LEED has mandatory prerequisites and optional credits,
while IgCC has mandatory requirements (some
jurisdictional) and project electives
 LEED has percentage targets with list of available
methods to comply, while IgCC prescribes methods.
 IgCC threshold levels tend to be lower.
 IgCC requires a variety of plans for compliance
IGCC v LEED – General
11

Mandatory vs. Elective Provisions
12

IGCC v LEED – Sustainable Sites
13
LEED Sustainable Sites IgCC Sustainable Sites
Prereq 1 Construction Activity Pollution Prevention 405.1 Soil and Water Quality Protection Plan
Credit 1 Site Selection: Prime Farmland
402.7 Building prohibited on land zoned agricultural.
(Jurisdictional)
Credit 1 Site Selection: Floodplain
402.2.3 1 foot freeboard in flood hazard area
402.2.1 and 402.2.2 Flood Hazard Area Preservation -
General / Specific -Prohibited in Flood areas with 1% risk or
as designated on map. (Jurisdictional)
A104.1 Buildings moved, higher freeboard, or substantial
improvement at 40%. (Project Elective)
Credit 1 Site Selection: Threatened Species Habitat
402.5 No development within 50 feet of designated
conservation area. (Jurisdictional)
A104.5 Habitat Restoration. (Project Elective)
Credit 1 Site Selection: Wetland
402.3 Building prohibited in, over or within water or buffer.
(Jurisdictional)
Credit 1 Site Selection: Water Body
402.4 Building prohibited in wetland or within buffer.
(Jurisdictional)
Credit 1 Site Selection: Parkland
402.6 Development prohibited in public park.
(Jurisdictional)

14
Credit 2 Development Density & Community
Connectivity
402.8 Greenfield development prohibition. (Jurisdictional)
A104.3 Infill development. (Project Elective)
Credit 3 Brownfield Redevelopment A104.4 Brownfield redevelopment. (Project Elective)
Credit 4.1 Alternative Transportation: Public
Transportation Access
Credit 4.2 Alternative Transportation: Bicycle Storage &
Changing Rooms
407.1 Walkways and bicycle paths
407.2 Bicycle changing and shower facilities > 10,000
square feet.
1104.2 Building site improvements.
A104.7 Changing and shower facilities <10,000 square
feet. (Project Elective)
A104.8 Long term bicycle storage. (Project Elective)
Credit 4.3 Alternative Transportation: Low-Emitting and
Fuel Efficient Vehicles
407.4.2 Low emission, hybrid and electric vehicle parking.
(Jurisdictional)
Credit 4.4 Alternative Transportation: Parking Capacity
407.4.1 High Occupancy Vehicle parking.
(Jurisdictional)

15
Credit 5.1 Site Development: Protect or Restore Habitat
402.8.1 Limits on depth of disturbance beyond building,
hardscape and construction staging area.
405.2 Vegetation and Soil Protection Plan (existing
vegetation, map, barriers, perimeter distance, methods,
tree protection zone)
402.8 Greenfields prohibition unless infill development.
(Jurisdictional)
Credit 5.2 Site Development: Maximize Open Space
Credit 6.1 Stormwater Management: Quantity Control
403.1.1 Retain 95th percentile of runoff or restore
predevelopment hydrology
Credit 6.2 Stormwater Management: Quality Control
403.1.3 / 403.2 Prohibit brownfield infiltration and use of
coal tar sealants
Credit 7.1 Heat Island Effect: Non-Roof
408.2 Site Hardscape
408.3 Shading by trees
1103.2 Changes to Hardscape and surface vehicle parking
A104.9 Heat Island 75%, 100%, in zones 1-6, 50% in zone
7-8. (Project Elective)

16
Credit 7.2 Heat Island Effect: Roof
408.3 Roof surfaces: 75% cool roof or vegetative in zones
1-3.
A104.9 Heat Island cool roof zones 4-8. (Project Elective)
Credit 8 Light Pollution Reduction
409.1 Light Pollution control for uplight, light trespass and
glare. (Jurisdictional)
401.2 Predesign Site Inventory and Assessment
405.1.2 Topsoil Protection
405.1.3 Imported soils not mined from farmland and
greenfield sites
405.1.4 Soil reuse and restoration for vegetation
405.1.5 Engineered growing media If used must
use best available science
A104.2 Wildlife Corridor (Project Elective)
A104.6 Mixed Use Development (Project Elective)

IGCC v LEED – Water Efficiency
LEED Water Efficiency IgCC Water Efficiency
Prereq 1 Water Use Reduction (20%)
Table 702.1 Minimum Fixture flow rates (shower, lavatory
faucet, bar sink, kitchen faucet, urinal, water closet,
food establishment prerinse spray valve, drinking
fountain).
702.2 Combination tub and shower valves – leakage
limited to 0.1 gpm.
702.4 Drinking fountain controls - Auto shutoff or metered
flows
Credit 1.1 Water Efficient Landscaping (50% red)
404.1 Landscape irrigation systems - reduce potable by 50%
404.1.2 No irrigation runoff, weather controls, plant
needs, pressure regulators, sprinkler limits
404.2 Outdoor fountains must use nonpotable or
alternate sources unless < 100 gallons or < 20 sq. ft.
water surface, recirculate and reuse water, and have
nonpotable signage (where available)
405.3 Native plant landscaping
17

IGCC v LEED – Water Efficiency
Credit 1.2 Water Efficient Landscaping (100% red)
404.1 Landscape irrigation systems
405.3 Native plant landscaping
Credit 2 Innovative Wastewater Technologies
710 Alternate onsite nonpotable water sources.
702.5 Nonwater urinal drainage connection downstream
from water using fixtures.
707 Rainwater Collection and Distribution Systems
708 Gray Water Systems
709 Reclaimed Water systems
A107.2 Onsite waste water treatment (Project Elective)
A107.4 Onsite nonpotable water for plumbing fixture
flushing. (Project Elective)
A107.9 Gray water collection. (Project Elective)
Credit 3.1 Water Use Reduction (30%) 702 Fixtures, fittings, equipment and appliances
702.4 Drinking fountain controls - Auto shutoff or metered
flows
702.6 Appliances (Energy Star clothes washer, ice maker,
dishwasher)
702.7 Municipal reclaimed water (Jurisdictional)
18

702.8 Efficient hot and tempered water distribution. Max pipe length and volume
702.9 Trap priming water - nonpotable and non-continuous, max 30 gallons per year
702.10 Water-powered pumps not allowed as primary means to remove ground water
from sump
702.11 Food service hand washing faucets auto shutoff
702.12 Dipper wells - shutoff and flow valve to max 1 gpm
702.13 Automated vehicle wash facilities - reuse 50% rinse water, max 40 gal/vehicle
bay or 35 gal/veh conveyor
702.14 Self-service vehicle wash facilities - spray wand maximum 3 gpm and faucets
self-closing
702.15 Vehicle washing facilities - reverse osmosis waste water to be used for washing
702.16 Food waste disposers - load sensing for max 1 gpm at no-load, and 8 gpm for
full-load
702.17 Combination ovens - max 3.5 gal/hour per steamer pan
702.18 Autoclaves and sterilizers - nonpotable if water tempered. Vacuum type not
allowed for venturi-type water use
702.19 Liquid ring vacuum pumps - reuse water unless hazardous
702.20 Film processors - water reuse if water cooled processors
703.1 Hydronic closed loop systems and equipment – nonpotable makeup water
703.2 Humidity lock-out > 55 percent
703.3 Tempering water nonpotable unless flow limit for 140 degree max and < 200
gal/day
Water Efficiency IGCC ONLY
19

703.4 Condensate must be captured and reused or credit to sanitary return where
credit exists
703.5 Heat Exchangers - once through cooling prohibited
703.6 Dehumidifiers must be captured where system exists
703.7 Cooling towers, evaporative condensers and fluid coolers - prohibit once through
cooling, limit drift losses
703.9 Evaporative cooling < 4 gal/ton-hour cooling capacity, pump shut-off, timer or
sensor. Discharge water reused.
704.1 Water treatment devices and equipment - demand initiated regeneration
controls, max 5 gal/1000 grains removed.
705 Metering - different sources of water and different consumption types shall be
metered (tenant, irrigation, cooling towers, industrial processes…)
706 Nonpotable water requirements - signage and quality
A107.3 Onsite nonpotable water for outdoor hose connections. (Project Elective)
A107.5 Onsite nonpotable water for fire sprinkler systems
(Project Elective)
A107.6 Onsite nonpotable water for fire pumps. (Project Elective)
A107.7 Onsite nonpotable water for industrial process makeup water (Project
Elective)
A107.8 Onsite nonpotable water for cooling tower makeup water. (Project Elective)
Water Efficiency IGCC ONLY
20

IGCC v LEED – Energy and Atmosphere
LEED Energy Efficiency IgCC Energy Efficiency
Prereq 1 Fundamental Commissioning of the Building
Energy Systems
611 Energy systems commissioning and completion
902 Approved agency
903 Commissioning
Prereq 2 Minimum Energy Performance
602 Modeled performance pathway requirements - or -
605 Building Envelope Systems per IECC plus.
606 Building Mechanical Systems per IECC plus
607 Building Service WH Systems per IECC plus
608 Building Electrical Power and Lighting Systems per
IECC, - plus -
1003.2.2 Heating, Ventilating and Air-Conditioning
1003.2.3 Service Water Systems
1003.2.6 Insulation of unconditioned attic
1003.2.7 Roof replacement insulation
Prereq 3 Fundamental Refrigerant Management
21

Credit 1 Optimize Energy Performance
602 Modeled performance pathway requirements
1003.2.2 Heating, ventilating and air-conditioning
1003.2.3 Service Water Systems 1003.2.6 Insulation of
unconditioned attics
602.1 Performance based zEPI <= 46 and Indirect CO2
emissions. (Jurisdictional)
A106.1 Performance path - higher zEPI levels for up to 10
Elective (Project Elective)
A106.2 Prescriptive path - 10% more efficient Mechanical
heating and cooling plus. (Project Elective)
A106.3 Prescriptive path - service WH 10% more efficient in
certain occupancies. (Project Elective)
A106.4 Prescriptive path - Lighting with indoor and outdoor
10% less energy (Jurisdictional Elective)
A106.5 Performance path - 40% reduced energy passive
design. (Jurisdictional Elective)
Credit 2.1 On-Site Renewable Energy (1%)
610 Building Energy Renewable Energy Systems -
REQUIRED for 2 percent of building and site energy, or 4%
RECs. Solar and Wind at 2% or Solar Water Heating at 10%
hot water energy usage
22

Credit 2.2 On-Site Renewable Energy (3%) 610 Building Renewable energy systems. (Jurisdictional)
610 Building Renewable energy systems. (Jurisdictional)
A106.6 Renewable Energy 5% (Project Elective)
Credit 3 Enhanced Commissioning
611 Energy Systems Commissioning per IECC in 60 days,
Post-occupancy recommissioning in 18-24 months from
Certificate of Occupancy
902 Approved Agency
903 Commissioning
Credit 4 Enhanced Refrigerant Management
23

Credit 5 Measurement & Verification
603 Energy metering, monitoring and reporting – all forms
of energy delivered, produced, and used.
603.5 Sub-meters, 36 month data and annual emissions
610.5 Renewable energy system performance monitoring
and metering
705 Metering
1003.2.1 Metering devices
Credit 6 Green Power
610.1 Renewable energy systems requirements – allows
RECs
602.2 Annual Direct / Indirect CO2e emissions.
(Jurisdictional)
603.2 Energy distribution design requirements and load
type isolation in buildings - circuit = 1 type of energy.
Includes plug and process loads
603.4 Energy load type sub-metering - installed when >
25,000 sq. Ft. or future capability
603.6 Energy Display at main bldg entrance
604 Automated demand-response (AUTO-DR)
infrastructure. (Jurisdictional)
609 Specific appliances and equipment -elevators,
escalators, conveyors and commercial food service
equipment.
24

Prereq 1 Fundamental Commissioning of the Building
Energy Systems
611 Energy systems commissioning and completion
902 Approved agency
903 Commissioning
Prereq 2 Minimum Energy Performance
602 Modeled performance pathway requirements - or -
605 Building Envelope Systems per IECC plus.
606 Building Mechanical Systems per IECC plus
607 Building Service WH Systems per IECC plus
608 Building Electrical Power and Lighting Systems per
IECC, - plus -
1003.2.2 Heating, Ventilating and Air-Conditioning
1003.2.3 Service Water Systems
1003.2.6 Insulation of unconditioned attic
Prereq 3 Fundamental Refrigerant Management
25

IGCC v LEED–Materials and Resources
LEED Materials and Resources IgCC Materials and Resources
Prereq 1 Storage & Collection of Recyclables
504 Waste Management and Recycling
505.2.3 Recyclable building materials and building
components
Credit 1.1 Building Reuse - Walls, Floors, Roof (55%)
A105.6 Building Reuse of Core and Shell 75% (Project
Elective)
A105.7 Historic Reuse 75% (Project Elective)
A105.6 Building Reuse of Core and Shell 75% (Project
Elective)
A105.7 Historic Reuse 75% (Project Elective)
Credit 1.2 Building Reuse - Interior Non-Structural (50%)
Credit 2.1 Construction Waste Management (50% diversion)
406 Building Site waste Management (includes land clearing
debris and excavated soils min 75%)
503.1 Construction Material and Waste Management Plan
503.1 Additional Percentage Determined by Jurisdiction.
(Jurisdictional)
A105.1 Add 20% diversion (Project Elective)
A105.2 Max 4 lb / square foot construction waste (Project
Elective)
26

Credit 2.2 Construction Waste Management (75% diversion)
406 Building Site waste Management (includes land clearing
debris and excavated soils min 75%)
503.1 Additional Percentage Determined by Jurisdiction.
(Jurisdictional)
Credit 3.1 Resource Reuse (5%)
505.2.1 Used Materials and Components
A105.3 Aggregate materials 70%
A105.3 Aggregate materials 85% (Project Elective)
Credit 3.2 Resource Reuse (10%)
505.2.1 Used Materials and Components
Credit 4.1 Recycled Content (10%)
505.2.2 Recycled Content Building Materials (25%)
Credit 4.2 Recycled Content (20%)
505.2.2 Recycled Content Building Materials (50%)
Credit 5.1 Regional Materials (10%)
505.2.5 Indigenous Materials
27

Credit 5.2 Regional Materials (20%)
505.2.5 Indigenous Materials
Credit 6 Rapidly Renewable Materials
505.2.4 Bio-based materials
Credit 7 Certified Wood
505.2.4 Bio-based materials
502.1 Construction material management – construction
phase - storage and handling per manufacturer; moisture
control.
506 Lamps - mercury limits 5-8 milligrams
507 Building envelope moisture control – commissioning of
moisture prevention strategies
A105.4 Building Service Life Plan for length of building life,
operations and maintenance, and replacement. (Project
Elective)
A105.5 Deconstruction and Reuse of 90% of building.
(Project Elective)
28

IGCC v LEED – Indoor Environmental Quality
LEED Indoor Environmental Quality IgCC Indoor Environmental Quality
Prereq 1 Minimum IAQ Performance International Mechanical Code - Overlay
Prereq 2 Environmental Tobacco Smoke Control 803.3 Environmental Tobacco Smoke Control
Credit 1 Outdoor Air Delivery Monitoring
Credit 2 Increased Ventilation
Credit 3.1 Construction IAQ Management Plan: During
Construction
502.1 Construction Material Management
801.2 Indoor air quality management plan required.
803.1 Construction phase requirements – Construction
Ventilation (MERV 8)
Credit 3.2 Construction IAQ Management Plan: Before
Occupancy
801.2 Indoor air quality management plan required
804.2 Post-construction, pre-occupancy baseline IAQ
testing. (Jurisdictional)
Credit 4.1 Low-Emitting Materials: Adhesives and
Sealants
805 Prohibited materials 806.2 Adhesives and sealants
Credit 4.2 Low-Emitting Materials: Paints and Coatings
805 Prohibited materials 806.3 Architectural paints and
coatings
Credit 4.3 Low-Emitting Materials: Flooring Systems
805 Prohibited materials
806.4 Flooring
A108.2 All flooring meets VOC emission limits. (Project
Elective)
29

IGCC v LEED – Indoor Environmental Quality
LEED Indoor Environmental Quality IgCC Indoor Environmental Quality
Credit 4.4 Low-Emitting Materials: Composite Wood &
Agrifiber
805 Prohibited materials
806.1 Emissions from composite wood products
Credit 5 Indoor Chemical and Pollutant Source Control
803.4 Isolation of pollutant sources
803.5 Filters
Credit 6.1 Controllability of Systems: Lighting
Credit 6.2 Controllability of systems: Thermal Comfort
Credit 7.1 Thermal Comfort: Design
803.2 Thermal environmental conditions for human
occupancy - ASHRAE 55
Credit 7.2 Thermal Comfort: Verification
Credit 8.1 Daylighting and Views: Daylight 808 Daylighting
Credit 8.2 Daylighting and Views: Views A108.6 View to building exterior (Project Elective)
804.1 Fireplaces and appliance venting and combustion
air
806.5 Acoustical ceiling tiles and wall systems emission
limits 85%
A108.2 Flooring deemed to comply list. (Project
Elective)
A108.3 Ceiling deemed to comply list. (Project Elective)
A108.4 Wall deemed to comply list. (Project
Elective)
806.6 Insulation VOC limits
807 Acoustic sound levels and testing. (Jurisdictional)
A108.5 Total VOC limit >= 50% (Project Elective)
30

This concludes The American Institute of Architects
Continuing Education Systems Course
Sheila.Blake@houstontx.gov
832-394-9040

IgCC vs. LEED 2009

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