Chicago & IL Energy Code, Garden Roofs and Drainage / Water Retention NW BOCA

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1 Chicago & IL Energy Code, Garden Roofs and Drainage / Water Retention NW BOCA

2 Learning Objectives To understand Garden & Other Roofs -Licensing -Slow water drainage - Save Energy Reflectivity, Insulation - Meet or Exceed Code Requirements - Technical Issues, Science and why it s important.

3 Why Do Garden & Reflective Roofs Make Sense for Chicago? Science?

4 Today, ORNL is DOE s largest multipurpose science laboratory $1.04 billion budget 3,900 employees 3,000 research guests annually Nation s largest unclassified scientific computing facility Nation s largest science facility: the $1.4 billion Spallation Neutron Source Nation s largest concentration of open source materials research Nation s largest energy laboratory $300 million modernization in progress

5 Andre Desjarlais, ORNL ENERGY USE IN BUILDINGS Transportation 27% Commercial Buildings 16% HVAC 39% Other 47% Industry 37% Residential Buildings 20% Lighting 14% Total Building Envelope Energy Loss: 13.9% of Energy in US Economy and about 3.5% of the world

6 ENERGY USE IN BUILDINGS Heating Load Cooling Load Windows 19% Roof 14% Walls 21% Internal Gains 27% Roof 14% Walls 10% Infiltration 30% Foundation 16% Windows (solar gain) 32% Infiltration 16% Windows (conduction) 1% Sources: Department of Energy, BTS Core Databook, 2002 Andre Desjarlais, ORNL

7 US reality- energy efficiency The U.S. has 5% of the world population The U.S. consumes 20-25% of the earths resources Buildings consume 73% of the US electricity generation (34% Natural Gas) 39% of U.S. CO 2 emissions are from the energy required by buildings Solution to get every building on the path toward energy efficient- ZEB. Quads Buildings Energy Use Growing Fastest 45 Industrial 40 Transportation Buildings Total Year Andre Desjarlais, ORNL

8 Building consumption & envelope contribution Computers 2% Other 12% Heating 23% Has Impact on 57% of Loads Appliances 12% Electronics 7% Cooling 13% Water Heating 10% Ventilation 3% Lighting 18% Andre Desjarlais, ORNL

9 Why a Cool or Vegetative Roof? Reduces cooling loads Reduces peak energy demand Can reduce ambient temperature in an urban setting (urban heat island - UHI) Improved air quality Further energy savings Cool roofs being included into energy codes Andre Desjarlais, ORNL

10 ATLANTA S CHANGING ENVORONMENT UHI Andre Desjarlais, ORNL

11 Andre Desjarlais, ORNL What is a Cool Roof? Roof surface that has a high solar reflectance and a high thermal emittance In Chicago.72 or.50 Reflectivity In ICC Codes Not Required 2009 International Energy Conservation Code INSULATION R-20 IL Adapted 2009 IECC

12 When did this Hubbub Start? Published in 1989 Andre Desjarlais, ORNL

13 ORNL WORKING WITH INDUSTRY PARTNERS Team with Metal Roof, Single Ply Membrane, and Roof Coating Associations and Their Members Federally Co-funded Andre Desjarlais, ORNL

14 ROOF ENERGY SAVINGS - REFLECTIVITY $0.25 R70E90 R65E10 R50E40 R-5 R-15 Savings, $/ft² per year $0.20 $0.15 $0.10 $0.05 $0.00 Knoxville Phoenix Chicago City Knoxville Phoenix Chicago Andre Desjarlais, ORNL

15 Regal White Rawhide Slate Blue Standard SR.67 Cool SR.72 Standard SR.47 Cool SR.56 Standard SR.21 Cool SR.33 Brick Red Charcoal Gray Hartford Green Slate Bronze Standard SR.25 Cool SR.30 Standard SR.14 Cool SR.28 Standard SR.11 Cool SR.28 Standard SR.08 Cool SR.26 Andre Desjarlais, ORNL

16 BALLAST STUDY - INSTRUMENTATION 10 lb/ft² Stone 17 lb/ft² Stone x x x x x 24 lb/ft² Stone CL x x x x x x 6 in. 6 in. 1 ft 1 ft 24 lb/ft² Paver 6 in. 6 in. x CL Thermocouples Heat Flux Transducer Andre Desjarlais, ORNL

17 Surfacing Protects against UV, Heat, and traffic GRAVEL/BALLAST GRANULE CAP SHEET REFLECTIVE ROOF COATING Andre Desjarlais, ORNL

18 White single ply sheet Andre Desjarlais, ORNL

19 Alternatives to a White Cool Roof? Cool colors More insulation Ballasted roofs Above sheathing ventilation Thermochromic surfaces Andre Desjarlais, ORNL

20 RESEARCH COOL & MASS Complete Impact of Roof Mass on Coolness Andre Desjarlais, ORNL

21 Stone Ballast Andre Desjarlais, ORNL

22 Test Sections Configured for the Ballast Tests Andre Desjarlais, ORNL

23 Ballast Study - Test Section Details Test Section Covering or Loading Thickness Solar Reflectance Black Control Bare EPDM 0.04 in White Control Bare TPO 0.05 in # Stone 10 lb/ft² on EPDM 17# Stone 16.8 lb/ft² on EPDM 24# Stone 23.5 lb/ft² on EPDM Paver 23.5 lb/ft² on EPDM 1.3 in in in in Andre Desjarlais, ORNL

24 Test Results Six Month Exposure Data Bare Black EPDM Under 10 lb/ft² Stone Under 24 lb/ft² Stone Membrane Temperature ( F) Bare White TPO Hours into 10/4/2004 Under 17 lb/ft² Stone Under Uncoated Paver Hours into 10/4/ Heat Flux through Insulation [Btu/(h ft²)] Andre Desjarlais, ORNL

25 Average Total Energy Loads Year 1 Year 2 Year 3 10 Load, Btu/h ft^ White Black 10# 17# 24# Paver Roof System Andre Desjarlais, ORNL

26 THE CALCULATOR - December Dr. Tom Petrie Andre Desjarlais, ORNL

27 As a Result Codes Cool / Green & Insulated Roofs Roof surfaces with high solar reflectance & Insulation In Chicago Code 72% or 50% SR Exceptions 15lbs. Ballast; Reroofing Ballast is means to hold the roof Mass is Mass Garden Roofs Photovoltaics In ICC IECC 2009 Code; ASHRAE 90.1 Reflectivity Not Required R20 Insulation is required

28 Insulation Effect = Immediate, Identifiable Reduce Heating Loads Some Cooling Loads Study Center for Innovation for Roofing 100,000 SF Warehouse R-15 to R-20 Insulation Heating/Cooling Bill cut by 1/3 Source: Andre Desjarlais, ORNL

29 Why Chicago s Garden Roofs? Chicago s Landscape. Flat, Marshy Land Heavy Clay Underbase, Glacial Lake Chicago Poor drainage Short, Sluggish Chicago / Calumet Rivers Human Alterations Shoreline Filled City Raised Reversed River Flow New Lagoons, Ponds, Harbors Suburbs = less drainage» Source: Encylopedia of Chicago

30 Chicago s Water Drainage History Flooding in Chicagoland 12 Biggies since , 1855, 1938, 1952, 1954, 1961, 1973, 1986, 1987, 1996, 2007, ? Most record setting crests set after 1948 Suburban Development. Drainage Project Solutions Illinois & Michigan Canal Reverse Chicago River 1900 Sanitary & Ship Canal 1900 North Shore Channel 1910 Cal-Sag Channel 1922 Locks Chicago River 1938 TARP Deep Tunnel

31 Chicago s Water Drainage Solutions Solutions?? Pourous Paving Systems Chicago s Alley Project Block L Pavers Sox Park Holds 600,000 Gals. In 100 year rains. Edge Notches 1/5 setting bed Gravel Base» Source IL Sports Facilities Authority

32 SOLUTION: Garden Roofs for Chicago

33 Chicago s Water Drainage Solutions Water Flow Through 1 Meter of: Gravel 2 minutes Sand 2 Hours Silt Days Clay 200 Years» Source: Michigan Tech Permeability Study

34 Chicago s Water Drainage Solutions Solutions? Water Retention Soils absorb 15-20% for 2-3 month period» Source: Environmental Design & Construction, May 1, 2003

35 Chicago s Water Drainage Solutions Solutions?? Chicago s Garden Roofs Slow Drainage, Store Water on Roofs.a typical green roof with about 3 inches of growing media can be designed to reduce annual runoff by more than 50 percent. Drainage / Water Retention Boards» GAL/SF Water Held on Roof» Source: American Wick Drain Source, Website: CityofChicago.org

36 New 2009 Code Requirements Chicago & ICC

37 Chicago Energy Codes Original Chicago Energy Code Roof reflectivity initial 0.50 aged Emissivity Amended Chicago Energy Code Roof Reflectivity 0.25 initial and aged No Emissivity Required Medium Slope Roofing Code :12 to 5:12 slope - New construction only 0.15 initial and aged No Emissivity Requirement New Urban Heat Island Ordinance

38 Chicago Energy Code URBAN HEAT ISLAND EFFECT Def. A microclimatic condition wherein large amounts of dark absorbing surfaces (such as asphalt paving and dark roofs) trap energy from sunlight and release it back into the atmosphere, causing higher ambient temperatures and higher pollution levels. Secondary Effect Garden Roofs for UHI = Slowed Water Runoff

39 Chicago 2009 Energy Code Projects Permitted after April 22, 2009 Urban Heat Island Effect Ordinance Reduce Temp.. Reflectivity - Lower temperature & save energy Low Slope Roofs - <2 : 12 Medium Slope Roofs 2 :12 to 5 : 12 Vegetative Roof Overburden Systems Photovoltaics Insulation Requirement R-20

40 Chicago Energy Code New Requirements 2009 Energy Code Reflectivity - Lower temp. & save energy Low Slope- <2 :12.72 NEW,.50 AGED 3 years Vegetative Roof Overburden Systems Intensive Extensive Pre Vegetative Modules.30 Reflectivity Allowance for 50% Fire Breaks

41 Chicago Energy Code - Reflectivity Single Ply Smooth & Ballasted TPO Smooth PVC EPDM BUR & Gravel (.30) Asphalt, Coal Tar SBS Modified Bitumen Hot Rubberized Asphalt

42 Garden Roofs in 2009 Code Definitions Extensive Thin Intensive Thick

43 Extensive < 6 Thick Overburden Plants May be Limited - Moisture Herbs Grasses Mosses Drought tolerant sedum Sustainable = shallow media Maintenance Required

44 Extensive < 6 Thick Overburden Advantages Lightweight Large, Low Sloped New & Existing Roofs Less Irrigation Less Expense

45 Extensive < 6 Thick Overburden Pre-Vegetated Roofing Modules Thinner Minimal Irrigation 95% Fully Grown Looks Great NOW!

46 Extensive - < 6 Thick Overburden Disadvantages Less Stormwater Capacity Limited Plant Choices Typically Not Occupied outdoor Space Winter Appearance? Wind Resistance?

47 Extensive Installation Process

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49 Delivery & Hoisting to Roof

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53 Intensive Garden Roof Components >6 Thick Systems Soil Media Drainage & Water Retention Boards Insulation Root Barrier & Roof Membrane

54 Thick Systems - Intensive > 6 Thick Systems Wide variety plantings: Species Maybe Trees, Shrubs Generally limited to flat roofs Require intense maintenance

55 Intensive > 6 Thick Systems Advantages Diverse Plants Most Mass Effect Peak demand later Max. Stormwater Holding Capacity

56 Intensive > 6 Thick Systems Disadvantages Weight Irrigation Needed Cost Investment Maintenance Roof Repair Accessibility

57 Roof System Installation Critical to Success

58 Intensive Garden Roof Installation Process Root Barrier

59 Intensive Garden Roof Installation Process Insulation Suitable for Application

60 Intensive Garden Roof Installation Process Drainage/Water Retention Boards Inside Urban Green Photo

61 Intensive Garden Roof Installation Process Medium - Bulk Hoisting and Delivery

62 Intensive Garden Roof Installation Process Medium Placement & Shaping

63 Intensive Garden Roof Installation Process Plants, Pavers, Irrigation, Features

64 Chicago & CRCA What s Next? Benefits of Vegetative to City Reduces Temperature of Chicago Reduces Stormwater Runoff Therapuetic for building occupants

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67 Garden Roof Issues Vegetative Roof Spec Issues Technical Issues Warranty Licensing Specification Sections International Building Code 2006 Vegetative Systems Code Silent, 2012?? International Building and Fire Code Vegetative- New Requirements Insurance Required Workforce Education & Safety Installed Cost

68 Chicago & CRCA What s Next? Vegetative Roof Spec Issues Technical Issues Wind Uplift Thickness; wind loads from Chapter 15, IBC Weight Distribution at placement Water Testing Serviceability it leaks, who digs? Placement Importance Cost if damaged, then covered

69 Chicago & CRCA What s Next? Vegetative Roof Spec Issues Insurance Required General Liability Workers Compensation

70 Chicago & CRCA What s Next? Vegetative Roof Spec Issues Warranty Single Source Why? Who s responsible? Manufacturer Preferences Roofer Landscaper sub?

71 Chicago & CRCA What s Next? Vegetative Roof Spec Issues Licensing Illinois Dept. of Professional Regulation Roofers are licensed to protect the building owner and manager, building engineer

72 Chicago & CRCA What s Next? Vegetative Roof Damage

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74 Chicago Energy Code 2009 Chicago Energy Code - Urban Heat Island Ordinance - Unique to Chicago - Insulation Requirements - From 2009 ICC IECC

75 Chicago Energy Code Section Exceptions Low & Medium Slope Roofs 1. Extensive & Intensive Green Roofs Vegetation Defined by US EPA; Photovoltaic, Solar Thermal Equipment 2. Rooftop Deck cover 1/3 total gross rooftop area Remainder.meet reflectance.

76 Chicago Energy Code Section How to Determine Reflectance Values 1. Tested - ASTM E903; E Portable Reflectometer - at/near Ambient Conditions 3. Display Verification Labels - 1. Cool Roof Rating Council 2. Energy Star

77 Chicago Energy Code Section Reflectance Value Requirements 1. New Construction - Meet or Exceed.72 initial reflectance OR.50 3 yr. Aged reflectance All Tested to ASTM E903; E1918

78 Chicago Energy Code Section Reflectance Value Requirements Exceptions 1. Vegetative or PV = > 50% of Roof lbs/sf weight of system, including ballast 1. Aggregate Reflectivity Chicago Quarry Averages

79 Chicago Energy Code Section Reflectance Value Requirements 1. New Construction Meet or Exceed.72 initial, OR.50 3yr. Aged 2. Exceptions Ballasted Roofs 15 lbs./sf Aggregate, Minimum Ballast Reflectance,.30 - Definition of Ballast River rock, aggregate or larger, pavers, or other means of weighing down a roofing membrane over a substrate to resist wind uplift. 15lbs./sf Over Single Ply BUR + Flood w/gravel, SYSTEM totaling 15 lbs./sf meets Pavers Weighing Down Ballast, Membrane, Felts, Insulation, etc.

80 Chicago Energy Code Section Reflectance Value Requirements - Full or Partial Replacements Full or partial replacements or retrofits of existing low sloped roofs originally permitted prior to January 1, 2009 by substituting the original materials or roofing system with new materials shall utilize roofing products that meet or exceed an initial reflectance value of 0.72 or a three-year installed reflectance value of 0.5 as determined by the Cool Roof Rating Council or Energy Star. Insulation installation must be maximized per section

81 Chicago Energy Code Section Reflectance Value Requirements - Full or Partial Replacements Exception 50% Green Vegetative, remainder.3 Rooftop Deck, over 1/3 of area Replacing Ballasted & Very Low Sloped Roofs.

82 Chicago Energy Code Section Exception - Replacing Ballasted Roofs. one of the following two sets of requirements must be met: (i) the reflectance value for the entire roof shall be a minimum of 0.30 and a minimum of 15 lbs/sq. ft. of ballast coverage over the entire roof shall be provided, Ballast = weight of felt, interply bitumen, rocks or (ii) the reflectance value shall be a minimum of 0.72 or a three-year installed reflectance value of 0.5 as determined by the Cool Roof Rating Council or Energy Star, ASTM.

83 Chicago Energy Code Section Reflectance Values - Replacing Ballasted & Very Low Sloped Roofs.<1/4 : 12 Reflectivity of Aggregate -.30 The exposed top layer of aggregate must substantially cover the roof area, such that the maximum exposure of the underlying water-repellent layer is no more than 5% of the total area of the roof. Allows Coal Tar, Dead Level Asphalt Insulation R-20 Minimum however, what if? If low curb heights, cost causes building closure, see Applicability Existing buildings Historic buildings Change in occupancy Mixed occupancy.

84 Chicago Energy Code Section Insulation R-20 above deck, but Curb, Window, Perimeter Edge heights? See exceptions, apply for variance with DCAP Applicability» Existing buildings - Except as specified in this article, this chapter shall not be used to require the removal, alteration or abandonment of, nor prevent the continued use and maintenance of, an existing building or building system lawfully in existence at the time of adoption of this chapter.» Not in code, but intent is.» when unable to meet code requirements, then insulation per inch LTTR Value must meet 6.0 per inch

85 Chicago Energy Code Section Insulation - Reroofing NOTE: Tapered Systems Average R-20 Accepted, per City of Chicago, Dept. of Environment. at CRCAA March 12, 2009 Membership Meeting

86 Chicago Energy Code Section Repairs Reflectance Values - Existing Roof Repair, mend fix, patch, cure, refurbish or otherwise salvage a portion of an existing roof in order to maintain or extend the lifespan of such roof.

87 Chicago Energy Code Section Reflectance Value Requirements Existing Roof Repair the portion repaired shall meet or exceed the reflectance value in effect when the roof was originally permitted.

88 Chicago Energy Code Medium Slope NO CHANGES from 05 Medium Slope Roofing Code 2005/9 2:12 to 5:12 slope - New construction only 0.15 initial and aged No Emissivity Requirement

89 Chicago & CRCA What s Next? Smooth Surface Roof Requirements Gravel/Ballast Roof Overburden Requirements Garden Roof Requirements Standards? None exist, nor code requirements Wind Uplift? Fire Resistance?

90 Chicago & CRCA What s Next? Smooth Surface Roof Requirements Mechanically & Fully Adhered Systems Screw Patterns Seams & Flashings Edge & Corner Fastening Wind Uplift Coatings Application Rates Fire Ratings Reflectivity

91 Chicago & CRCA What s Next? Gravel/Ballast Roof Overburden Wind Uplift Edge & Corner Gravel Placement Protect Membrane Equipment Workers & Others? Weight Distribution Fire Resistance

92 Chicago & CRCA What s Next? Garden Roof Standards? None exist, nor code requirements Wind Uplift? Fire Resistance? Industry Discussions at Chicago, ICC Hearings May, October 2010

93 Chicago & CRCA What s Next? Code Requirements & Standards Garden Roofs 2012 Code Next slides. Conventional Roofs Century old ASTM & UL Wind & Fire Standards ICC and NFPA Code Requirements

94 Chicago & CRCA What s Next? Vegetative Roof Spec Issues International Building Code Vegetative IBC Code Silent, 2003, 2006, 2009, IBC & IFC 2012 Chapter 15 TITLE Roof Assemblies and Rooftop Structures Chapter 15, Building Code- S10 NASFM Increase roof covering one level above the level indicated in the table. Chapter 15 SCOPE.govern the design, materials, construction and quality of roof assemblies and rooftop structures. Comply with the fire code.

95 Chicago & CRCA What s Next? Vegetative Roof Spec Issues International Building Code Vegetative IBC & IFC 2012 Fire Resistance = Low Sloped Roofs Immediate Removal of Dried Wind Resistance Any exposed portions of roof coverings on roofs containing roof gardens or landscaped roofs shall have their roof covering fire classification increased one level above the level indicated in the table Roof gardens and landscaped roofs. Roof gardens and landscaped roofs shall comply with the requirements of this chapter and Sections and and the International Fire Code Structural fire-resistance. The structural frame and roof construction supporting the load imposed upon the roof by the roof gardens or landscaped roofs shall comply with the requirements of Table Photovoltaic systems. Rooftop installed photovoltaic systems that are adhered or attached to the roofcovering shall be labeled to identify their fire classification in accordance with the testing required in Section

96 Chicago & CRCA What s Next? Vegetative Roof Spec Issue International Building Code Vegetative - IBC & IFC 2012 ROOF GARDENS AND LANDSCAPED ROOFS General. Rooftop gardens and landscaped roofs shall be installed and maintained in accordance with this code and Sections and of the International Building Code Rooftop garden or landscaped roof size. Rooftop garden or landscaped roof areas shall not exceed 15,625 ft2 (1,450 m2) in size for any single area with a maximum dimension of 125 ft (39 m) in length or width. A minimum 3 ft (0.9 m) wide clearance shall be provided between adjacent rooftop garden or landscaped roof areas Rooftop structure and equipment clearance. A minimum 3 ft (0.9 m) wide clearance shall be provided between the rooftop garden or landscaped roof and rooftop structures, including but not limited to mechanical and machine rooms, penthouses, skylights, roof vents, solar panels, antenna supports, and building service equipment Vegetation. Vegetation shall be maintained as described in Sections and Irrigation. Supplemental irrigation shall be provided as necessary to maintain levels of hydration necessary to keep green roof plants alive and to keep dry foliage to a minimum Dead foliage. Dead foliage and biomass shall be removed immediately (IBC [F] ) Roof gardens and landscaped roofs. Buildings or structures with roof gardens or landscaped roofs that are equipped with a standpipe shall extend the standpipe to the roof level on which the roof garden or landscaped roof is located.

97 Chicago & CRCA What s Next? Vegetative Roof Spec Issue International Building Code Vegetative - IBC & IFC 2012 ROOF GARDENS AND LANDSCAPED ROOFS Maintenance of vegetation. Vegetation placed upon buildings shall be maintained to prevent the accumulation of weeds, grass, vines, trees, or other growth that is capable of being ignited. All vegetation that poses a fire hazard to the building or exposure structures shall be removed from the building Maintenance plan. The fire code official is authorized to require a maintenance plan for vegetation placed on roofs due to the size of a roof garden, materials used, or when a fire hazard may exist to the building or exposures due to the lack of maintenance Maintenance equipment. Fueled equipment stored on roofs and used for the care and maintenance of vegetation on roofs shall be stored in accordance with Section 313.

98 Chicago & CRCA What s Next? Vegetative Roof Spec Issues Specification Sections- MasterFormat 04 Division Protected Membrane Roofing; Includes roofing assemblies with protective insulation and other surfacing materials, covering, membranes, applied directly to the structural substrate Alternative Terms, Abbreviations: vegetated, landscaped protected membrane roofing, green roof, sustainable design roof, alternate terms for Protected Membrane Roofing Division Vegetative Roofing has it s own section!! Division Natural Roof Coverings Sod, Thatched, Vegetated Roof Coverings Organic Special Roof Coverings Division 7, reference to Division 2 Plants, Irrigation Division 31 Definitions Specify Vegetative in Division 7. Roofer responsible for ALL, sub out if required. Piping, Mechanical Insulation

99 Chicago & CRCA What s Next? Vegetative Roof Spec Issues International Building and Fire Code Vegetative- New Requirements Chapter 15 Wind & Fire IFC Chapter 3 Fire Code National Association of State Fire Marshals, F8 Use and Occupancy Classification, references , and Size not to exceed 15,625sf, max dimension 125, l/w, min 3 clearance between adjacent rooftop garden or landscaped roof areas Irrigation supplemental irrigation shall be provided as necessary to maintain levels fo hydration necesarry to keep green roof plants alive and to keep dry foilage to a minimum. Dead foilage to be removed immediately. NEW Appendix K Fire Code F238 Los Angeles Fire Dept Photvoltaic Systems Roof Gardens, Landscaped Roofs,» Access» Fire Breaks» Shutoffs

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101 Chicago & CRCA What s Next? Vegetative Roof Spec Issues Workforce Education Safety The right answer. Parapets, 40 above finished roof. Permanent Fall Protection Systems Classroom & Hands On Education Installed Cost & Efficiency Knowledge Working at Height Hoisting Placement with responsibility

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103 Chicago & CRCA What s Next? Vegetative Roof Spec Issues Installed Cost Roof Gardens It Depends Extensive - $7 - $20/sf Intensive - $25-50/sf?? Efficiency Competitive Experience

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106 Chicago & CRCA What s Next? Vegetative Roof Contracting Issues Joint Conference Board Roofers Won two hearings Roosevelt Collections Lowes National Labor Relations Board Determined work awarded to employees of contractor with contract No National Jurisdiction Ruling for ALL projects

107 Chicago & CRCA What s Next? Vegetative Roof Spec Issues Who does this work? The Marketplace Decided Roofing Culture Chicagoland Roofing Contractor Experience 2,000,000 plus SF Installed, (Most in last 2 years) Lowes Menards Target Allstate Jewel Osco Lutheran General Northwestern Memorial Hospital Chicago City Hall Chicago Cultural Center Schwab Hospital The Mather Center Federal Express O Hare More.

108 Chicago & CRCA What s Next? Vegetative Roof Spec Issues Technical Issues Insurance Required Warranty Licensing Specification Sections International Building Code 2006 Vegetative Systems Code Silent International Building and Fire Code Vegetative- New Requirements Workforce Education & Safety Installed Cost Experiences

109 Water Retention Saves Deep Tunnel Urban Heat Island Reduction Reduces City Temperature Reduced Energy Usage Isolates Roof Membrane UV Foot Traffic However

110 How to Specify Garden Roofs Specifications Classified In Division 7, Roofs CSI s MasterFormat Vegetated Roofing

111 Garden Roof Code Requirements ICC Code Requirements 2012 International Fire Code Wind, Fire Performance, per Chapter 15, Roofing Immediate removal of Dry Plants Fire Breaks every Approx. 15,000SF NOTE: Chicago Municipal Code 10,000 SF 2012 International Building Code Wind, Fire Performance, per Chapter 15, Roofing

112 Garden Roof Requirements Water, Energy Code Requirements Chicago Energy Code Reflectivity Exception: if 50%, reflectivity drops to.3 (Gravel) Garden Roofs meet UHI Requirements Mass Effect Plants & Environment All roofing requirements remain

113 Garden Roof Code Requirements Chicago Energy Code Reflectivity Garden Roofs meet UHI Requirements Mass Effect Plants & Environment Exception: if 50%, reflectivity drops to.3 (Gravel)

114 Garden Roof Installation Critical IT s ABOUT THE ROOF, and Everything else too!! Roofing Contractor = Prime Contractor Manage Roof Construction Process Culture of Roofer Understands Working at Heights Safety Supervise trades on roof WC & GL Roofer Classification Over 2,000,000 SF Above Grade Water tight Roof that Doesn t Leak!

115 Garden Roof Installation Critical IT s ABOUT THE ROOF, and Everything else too!! Single Source Warranty Roofing System, Deck Up Roof, Protection Boards Drainage/Water Retention Boards Root Barriers, Irrigation System Soils Plants One Roof, One Call - Chicagoland s Professional Roofing Contractors & Local 11 Workforce

116 Solutions?? NW BOCA Why Garden Roofs? Deep Tunnels?

117 Solution Garden Roofs CRCA Celebrates with Chicago 10 Years

118 Chicago & CRCA What s Next?

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120 Chicago Energy Code Chicago Incentives EZ Permitting City of Chicago Dept. of Planning & Development

121 Chicago & IL Energy Code, Licensing & Garden Roofs and Drainage / Water Retention NW BOCA