village of frankfort, illinois april 21, 2010 the 2009 international energy conservation code...
TRANSCRIPT
Village of Frankfort, Illinois
April 21, 2010
The 2009 International Energy Conservation Code Overview
Presented By:
Don Plass, C.B.O., M.C.P., LEED APDirector of Code EnforcementVillage of Hoffman Estates
Introduction and Overview
Codes
History of Illinois Energy Efficiency Building Act
Residential Applications of the 2009 IECC
RESCheck/REM Rate
Codes
Building Code – A set of rules of procedures designed to secure uniformity and protect the public interest in such matters as building constriction and public health, established by a public agency and commonly having the force of law in a particular jurisdiction
Earliest Recorded Building Code
The Code of Hammurabi 1780 BC The earliest recorded “Building Code” comes from an 8 foot stone slab recovered
in the Persian Mountains in 1901. It is preserved today in the Louvre, Paris
The Code was written by the ruler of Babylon:
King Hammurabi The Code contained 282 laws, of which 5 referred to construction
Hammurabi Code Numbers 229-233
229-If a builder build a house for someone and does not construct it properly, and the house for which he built fall in and kills the owner, the builder shall be put to death.
230-If it kill the son of the owner, the son of the builder shall be put to death.
233-If a builder builds a house for someone, even though he has not completed it, if then the walls seem toppling, the builder must make the walls solid from his own means
Present day codes:
Building Officials and Code Administrators (BOCA) was published in 1915 (Midwest)
Uniform Building Code (UBC) was published in 1927 (West of Mississippi)
Southern Building Code Congress (SBCC) was published in 1940 (South East) “Standard Building Code"
These are commercial codes
CABO
In 1972, the Council of American Building Officials (CABO) was incorporated with the combination of the three model commercial code groups: BOCA, UBC and SBCC.
CABO is a prescriptive code for residential one and two family dwelling units.
Model Energy Code-Evolution
In 1973 the first Model Energy Code (MEC) was published by CABO
In 1998 the International Energy Conservation Code was published by the three model code groups who were merging into the International Code Council (ICC)
In 2000 the first International Energy Conservation Code (IECC) was published by ICC
2000 International Energy Conservation Code (IECC)
The first published International Code Council (ICC) Energy Code
19 Climate Zones (CZ)
198 pages in length
2009 IECC
Applies to Residential BuildingsOne and Two Family dwellings, TownhousesMultifamily dwellings three-stories or less in height
Commercial BuildingsMultifamily dwellings four stories or greater in
heightEight global climate zonesCompliance assessment choices
Prescriptive criteria-for ease of enforcementSimulated Performance criteria-for design flexibility
2009 IECC
Changes in Residential RequirementsStringency-some key differencesNew requirements
Building envelope tightnessDuct testingLighting equipmentPool controls and coversSnow melt controls
Moisture control requirements moved to IRCNo mechanical trade-offs allowed
Envelope Stringency Changes-2009 IECC
Fenestration U—Factor, Climate Zone 4 is lowered from 0.4 to 0.35
Wood frame wall U-Factor, CZ5-CZ6 lowered from 0.060 to 0.057`Minimum R-Value for “batt – only” raised from 19
to 20
Basement wall U-Factor, CZ6-CZ7 lowered from 0.059 to 0.050Minimum R-Value raised from 10/13 to 15/19
Building Envelope Tightness – 2009 IECC
Mandatory air leakage section for building thermal envelope (402.4.1) has been revised to include attic openings and rim joist junctions
New air sealing and insulation section (402.4.2) added with testing and visual inspections options
Duct Testing – 2009 IECC
New Duct Testing requirements are in Section 403.2.2 for either a post construction or rough-in test, unless ducts and air handler are located within the conditioned space
Lighting Equipment – 2009 IECC
A new requirement in Section 404 that50 % of lamps in permanently installed lighting fixtures shall be high-efficacy lamps
Pool Controls and Covers – 2009 IECC
A new Section 403.9in pools requires a readilyaccessible on/off switch,time switches for heaters and pumps along withpool covers
Moisture Control Requirements to IRC
Moisture control requirements (Vapor Barriers) have been moved to the 2009 International Residential Code
No Mechanical Tradeoffs Allowed
Table 405.5.2(1) setsthe standard for heatingand cooling systems to be “as proposed”This removes justificationfor the justification for the mechanical systems trade off used
in REScheck
IRC not equal to IECC
Energy Chapter in IRC is not equal to the IECCDOE does not recognize the IRC for energyIRS does not recognize the IRC for tax creditsFHA does not recognize the IRCIllinois does not recognize the IRC
History of the Illinois Energy Conservation Code (Commercial)
Public Act 093-0936 was signed into law in August of 2004 as the Illinois Energy Conservation Code for Commercial Buildings
Became effective April 8, 2006 (2000 IECC/2001 IECC Supplement)
Revised to exclude supplements on October 9, 2007
On August 18, 2009 the 2009 IECC was adopted for all Commercial projects
Illinois Energy Conservation Code (Residential)
Public Act 096-0778 was signed on August 28, 2009 to include Residential structures
The Energy Efficient Commercial Building Act became “The Energy Efficient Building Act”
Rules for enforcement were filed with the SOS on January 29, 2010 under Emergency Rules and is effective for enforcement when filed. The Rules are in the first of two Public Comment Periods
What the Law Requires
Follow the Latest published edition of the International Energy Conservation Code (IECC)
Commercial/Residential permit applications must follow the Code any time a Permit is applied for
Amending the Illinois Energy Code
Commercial:No unit of local government may be
less stringent than the 2009 IECC
Nothing prevents a unit of local government from adopting an energy efficiency code or standards that are more stringent than this code
Amending the Illinois Energy Code
Residential:No unit of local government including any Home Rule Unit , may regulate the IECC in a manner that is either less or more strict than the 2009 IECC
2009 IECC/Residential More StrictThe following entities may regulate energy
efficient building standards more stringent than the 2009 IECC
(i) If on or before May 15, 2009 has adopted by reference the 2006 IECC (equal/more stringent)
(ii) If on or before May 15, 2009 has provided the CDB with a code/standard equal to or more stringent than the 2006 IECC
(iii) Population of 1,000,000 or more (Chicago)
Residential Applications of the 2009 IECC (Chapter 4)
Structure of the 2009 IECC
Chapter 1AdministrativeChapter 2DefinitionsChapter 3Climate ZonesChapter 4Residential Energy EfficiencyChapter 5Commercial Energy
EfficiencyChapter 6Referenced Standards
Overview of 2009 IECC Residential
The focus is on the building envelopeDuctwork – seal and insulateThere are limited space heating, AC and
water heating requirementsNo appliance requirementsLighting fixtures shall have 50% of
permanently installed fixtures with high-efficacy lamps
Chapter 1 - Administration
All low rise (3 stories or less) houses, condominiums, townhomes and apartments (R-2, R-3, R-4)
If the building is not classified as residential, it is classified as commercial
Includes new construction, alterations, repairs and additionsi.e. Window replacements are
considered under this
Exceptions to Thermal Provisions
Very low energy use( less than 3.4 BTU/h-sq ft)
Buildings neither heated or cooled
Existing buildings
Historic buildings
Additions, Alterations, Renovations, RepairsMust conform to new work standardsExisting do not need to comply (if not changed)Addition can comply alone or with existing
structureExceptions:
Installing storm windows over existing fenestrationGlass only replacementsExposed, existing ceiling, wall or floor cavities if
already filled with insulation Where existing roof, wall or floor cavity is not
exposedRe-roofing when neither sheathing nor insulation is
exposedInsulate above or below ceiling
Attics without insulation in the cavities
Construction Documents
Required Information on plansInsulation materials and R-ValuesFenestration and U-FactorsMechanical system design criteriaMechanical and service water heating systems
and equipment types, along with sizes and efficiencies
Duct sealingDuct and pipe insulation and locationsLighting fixture schedule/showing high-efficacy
lamps
Chapter 2 - DefinitionsAir Barrier: Material(s) assembled and joined
together to provide a barrier to air leakage through the building envelope. An air barrier may be a single material or a combination of materials.
High Efficacy Lamps: Compact fluorescent lamps, T-8 or smaller diameter linear fluorescent lamps
R-Value: Thermal Resistance R=1/UU-Factor: Thermal Transmittance U=R/1Code: The 2009 International Energy
Conservation Code Residential Building: Three stories or less above
grade
Building Thermal Envelope-The basement walls, exterior walls, floor, roof, and any other building element that enclose conditioned space. This boundary also includes the boundary between conditioned space and any exempt or unconditioned spaces.
Conditioned space – An area or room within a building being heated or cooled, containing uninsulated ducts, or with a fixed opening directly into an adjacent conditioned space.
Chapter 3 – Climate ZonesListed by state and countyInterior Design Conditions: Max 72 Degrees
for Heating and a minimum of 75 degrees for cooling
Requirement of materials to be marked for inspection
Default Fenestration Factors
Chapter 4 – Residential Energy Efficiency Code Compliance Tools
Prescriptive
None Needed
Total Building
“UA” Trade Off
REScheck Software
Energy Analysis
SoftwareFor
Example:REM/DesignREM/Rate
Three Code Compliance Options
Prescriptive
R-Values402.1.1
U-Factor and “UA”
Alternatives
U-Factor402.1.3
Total Building UA
402.1.4
Simulated Performance(Software)
Simulated PerformanceAlternative
405
U-Factor Requirements by Climate Zone
CLIMATE ZONE
FENESTRATION U-FACTOR
SKYLIGHT U-FACTOR
CEILING U-FACTOR
FRAME WALL
U-FACTOR
MASS WALL
U-FACTORb
FLOOR U-FACTOR
BASEMENT WALL
U-FACTORd
CRAWL SPACE WALL
U-FACTORc
1 1.20 0.75 0.035 0.082 0.197 0.064 0.360 0.477 2 0.65 0.75 0.035 0.082 0.165 0.064 0.360 0.477 3 0.50 0.65 0.035 0.082 0.141 0.047 0.091c 0.136
4 except Marine
0.35 0.60 0.030 0.082 0.141 0.047 0.059 0.065
5 and Marine 4
0.35 0.60 0.030 0.057 0.082 0.033 0.059 0.065
6 0.35 0.60 0.026 0.057 0.060 0.033 0.050 0.065 7 and 8 0.35 0.60 0.026 0.057 0.057 0.028 0.050 0.065
U-Factor and Total UA (REScheck)
U-Factor Alternative Similar to Prescriptive but uses U-Factors
instead of R-ValuesAllows for innovative or less common
construction
Total UA AlternativeSame as U-Factor Alternative but allows
trade-offs across all envelope components
Attic Access HatchesWeatherstrip and insulate doors/panels from
conditioned spaces to unconditioned spaces(i.e. attics and crawl spaces)Insulate to a level equivalent to surrounding
surfacesProvide access to all equipment that will
prevent damaging or compressing the surrounding equipment
Install a wood framed or equivalent baffle or retainer when loose fill insulation is installed
Air Leakage (Mandatory for all)
Air LeakageRecessed Lighting FixturesMaximum Fenestration U-Factor and SHGCFireplaces
Building Thermal EnvelopeThe following shall be caulked, gasketed ,
weatherstripped or otherwise sealed with an air barrier material, suitable fim or solid material
All joints, seams and penetrationsSite built windows, doors and skylightsOpenings between window and door assemblies
and their respective jambs and framingUtility penetrationsDropped ceilings or chases adjacent to the
thermal envelope
Knee wallsWalls and ceilings separating a garage from
conditioned spacesBehind tub and showers on exterior wallsCommon walls between dwelling unitsAttic access openingsRim joist junctionsAll other sources of infiltration
Areas for Air LeakageWindows/doorsBetween sole plateFloors and exterior
wall panelsPlumbingElectricalService accessRecessed lightingRim Joist junction
Air Sealing and Insulation-2 OptionsTwo Options to Demonstrate Compliance Blower Door-When tested air leakage is <7
ACH when tested with a blower door at 50 PascalsTesting after rough-in and installation of
building envelope penetrations
When items listed in Table 402.4.2 applicable to the method of construction are field verified (Section 402.4.2)
Recessed LightingRecessed lighting in the building thermal
envelope shall be sealed to limit air leakage between conditioned space and unconditioned space
All recessed luminaries shall be sealed with a gasket or caulk between the housing and the interior wall
Mechanical System Controls (Mandatory)Programmable thermostat-controls Ducts
Sealing (Mandatory)Insulation (Prescriptive)
HVAC Piping InsulationCirculating Hot water systemsVentilationEquipment sizingSnow melt controlsPools
Programmable Thermostat
If forced air: At least one programmable thremostat per dwelling unit
Programmed with:Heating temperature set point no higher than
70 degreesCooling temperature set point no lower than
78 degrees
Ducts
Insulation (Prescriptive)Ducts outside the building envelope
shall be R-8; all other ducts: R-6
Sealing (Mandatory)Joints and seams shall comply with IRC
Section M1601.4.1
Building framing cavities shall not be used as supply ducts
Piping Insulation
R-3 required on HVAC systemsException: Piping that conveys fluids
between 55 and 105 degrees
R-2 required on all circulating domestic hot water systems
The system also requires a readily accessible manual switch
An inspection of all pipe insualtion is required prior to cover up
Ventilation and Equipment Sizing
VentilationOutdoor air intakes and exhausts shall have
automatic or gravity dampers that close when the ventilation system is not working
Equipment SizingIECC references Section M1401.3 of the IRC Load calculations determine proper size of
equipmentCalcualtions in accordance with Manual J
Snow Melt Controls
Pavement temperature > 50 degrees and no precipitation is falling and when the outdoor temperature is > 40 degrees, the system shall shut down
Pools
Pool heaters shall have a readily accessible shut off switch
Gas fired heaters shall not have continuously burning pilot
Timers to automatically turn on and offException Public Health requires 24 hour
operationPump systems with solar heat recvoery
Lighting Equipment
A minimum of 50% of the lamps in permanently installed lighting fixtures shall be high - efficacy
Prescriptive method
Simulated Performance Alternative
Local official may approve the use of specific computer software programs. i.e. REMrate
Includes both envelope and equipmentAllows greater flexibility, allows credits such
as:High efficiency furnaces Tight ducts that MUST be tested (Duct Blaster)Exterior shading, favorable orientation
Table 405.5.2(1) shall be followed strictlySimilar to ENERGY STAR Home guidelines
Code official has the final say and must approve:Software chosenWorksheets to be submitted
Mandatory requirements are required for this method also
Energy prices taken from approved source by code official
All work is subject to inspectionsCertificate is required
CertificatePermanently posted on the electrical distribution
panelDon’t cover or obstruct the visibility of other
required labelsInclude the following information
R-values of insulation installed for the thermal buildingenvelope including ducts outsideconditioned spaces
U-factors for fenestrationSHGC for fenestrationHVAC efficiencies and typesSWH equipment
Helpful Websites
www.illinoisenergy.org Department of Commerce and Economic Opportunity (DCEO)
www.energycodes.gov DOEwww.ilga.gov Illinois General
Assemblywww.cdb.state.il.us Capital Development
Boardwww.iccsafe.org International Code
Council
Questions?
Thanks for inviting me
Don PlassDirector of Code Enforcement Village of Hoffman [email protected]