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2012 International Energy Conservation Code Update with Maryland Amendments Based on the 2012 International Energy Conservation Code ®, (IECC ® ) Maryland.

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Presentation on theme: "2012 International Energy Conservation Code Update with Maryland Amendments Based on the 2012 International Energy Conservation Code ®, (IECC ® ) Maryland."— Presentation transcript:

1 2012 International Energy Conservation Code Update with Maryland Amendments Based on the 2012 International Energy Conservation Code ®, (IECC ® ) Maryland Code Administration

2 Description This seminar introduces participants to the major changes from the 2009 IECC to the 2012 IECC with an emphasis on the increase in energy efficiency improvements. Participants will discuss the changes and reasons for the changes. Information presented will allow participants to apply these new code requirements to design, plan review, and/or inspection. 2012 IBC Update2 Handout page 1

3 Marginal Markings within the codebook Solid vertical lines indicate a technical change from the requirements of the 2009 edition. Arrows indicate where a section, paragraph, item in a list, exception or table has been deleted. A single asterisk [*] indicates that text or a table has been relocated elsewhere in the code. A double asterisk [**] indicates that the section or table immediately following has been relocated here from a different section. 2012 IECC Update3 * **

4 The new Code Development Process Highlights of the plan include: Maintains 3-year publication cycle Maintains the ICC Governmental Consensus Process Divides the codes into two groupings for purposes of Code Development and Final Action Hearings – one group heard each year. An unveiling of all the new codes at the Annual Conference in the third year Holding Code Development Hearings at the same central location every April/May Holding all Final Action Hearings at the Annual Conference at locations which will continue to rotate through the four quadrants of the U.S. in late October/early November. 2012 IECC Update4

5 Letter Designations in Front of Section Numbers The two groups of codes and deadlines for proposals are: Group A Codes – IBC, IFGC, IMC, IPC, IPSDC Proposals due January 3, 2012 Group B Codes – Admin, IEBC, IECC, IFC, IGCC, IPerfC, IPoolC, IPMC, IRC, IWUIC, IZC. Proposals due January 3, 2013 Each grouping having Code Development and Final Action Hearings occurring in the spring and fall of the same year during the first two years of the publication cycle 2012 IECC Update5

6 Letter Designations in Front of IECC Section Numbers The content of sections that begin with a letter designation is maintained by another code development committee: 2012 IECC Update6 [CE] = Commercial Energy Code Development Committee [M] = Mechanical [RE] = Energy Code Development Committee

7 Maryland Provisions Three Part Process 2012 IBC Update7

8 Climate Zones Maryland 4 and 5 2012 IECC Update8

9 Annotated Code of Maryland Enabling legislation that creates the framework for the Maryland Building Performance Standards. Public Safety Article TITLE 12. BUILDING AND MATERIAL CODES; OTHER SAFETY PROVISIONS SUBTITLE 5. MARYLAND BUILDING PERFORMANCE STANDARDS 2012 IBC Update9

10 Duties of the Maryland Codes Administration (COMAR) Must adopt as part of the Standard (MBPS) the IBC, the IRC and the IECC within 12 months of the issuance by ICC. Amendments to the IBC and IRC may not be more stringent than the provisions found in those documents. Amendments to the IECC must not lessen any of the IECC requirements. 2012 IBC Update10

11 Local Jurisdiction Amendments Local Amendments must not prohibit the minimum implementation and enforcement set forth in §12-505 Review and accept plans Issuance of building permits Inspection of the work authorized by building permit Issuance of appropriate occupancy certificates 2012 IBC Update11

12 Local Jurisdiction Amendments Local Amendments must not prohibit the minimum implementation and enforcement set forth in §12-505 Review and accept plans Issuance of building permits Inspection of the work authorized by building permit Issuance of appropriate occupancy certificates Weaken energy conservation and efficiency provisions of the Standards 2012 IBC Update12

13 Local jurisdictions SHALL implement and enforce the most current version of the standards and any local amendments Local Jurisdiction Implementation and Enforcement 2012 IBC Update13 No later than 6 months after adoption by the State.

14 Key Maryland Dates COMAR adoption of the 2012 IBC: January 1, 2012 Local implementation and Enforcement: July 1, 2012 Local amendments to Maryland Codes Administrations: 15 days prior to local effective date Or 5 days after emergency local adoption 2012 IBC Update14

15 COMAR 05.02.07.03 B. Terms. New term High performance home has the meaning stated in Public Safety Article, §12-509(a), Annotated Code of Maryland § 12-509. Encouragement of high-performance homes (a) "High-performance home" defined. -- In this section, "high- performance home" means a new residential structure that meets or exceeds the current version of: (1) the Silver rating of the International Code Council's 700 National Green Building Standards; or (2) the Silver rating of the U.S. Green Building Council's LEED (Leadership in Energy and Environmental Design) for Homes Rating System. 2012 IBC Update15

16 2012 IECC COMAR Modifications Modifications to the 2012 International Energy Conservation Code. Add a note to Section C101, Scope and General Requirements: Additional requirements concerning energy conservation for buildings and structures may be required by the Energy Conservation Building Standards, Public Utilities Article, §§7-401 – 7-408, Annotated Code of Maryland, as amended. 2012 IBC Update16

17 COMAR 05.02.07.04 E New Section added as follows: E. The Department encourages: (1) Home builders to construct new high performance homes; and (2) Local jurisdictions to amend these standards to allow builders to construct high performance homes. 2012 IBC Update17

18 COMAR Modifications to the IBC and IRC Additional modifications are made as part of the Maryland Building Performance Standards to the IBC and the IRC. Those modifications are part of the Update Classes for the IBC and IRC are being offered by the Maryland Codes Administration through the International Code Council. 2012 IBC Update with Maryland Amendments18

19 Compliance Process 19 Must the project comply with the IECC? Mandatory Provisions Air Leakage and Building Systems Performance PathPrescriptive Path Building Thermal Envelope and Electrical Simulated Performance Alternative R-value Computation UA AlternativeTotal UA Alternative Document Compliance with IECC Field Inspection Plan Review Handout page 6

20 IECC Plan Review 1.Determine IECC mandatory provisions for air leakage and building systems are met. 2.Determine if either the prescriptive path or simulated performance path is used. 3.Determine IECC prescriptive provisions are met for the building thermal envelope and electrical. 4.Determine if either the R-value computation, UA alternative or Total UA alternative is used. 1.Determine IECC provisions for R-value computation are met. 2.Determine IECC provisions for UA alternative are met. 3.Determine IECC provisions for Total UA alternative are met. 5.Determine if the provisions for the simulated performance alternative are met. 6.Document compliance for field inspection staff. 2012 IBC Update with Maryland Amendments20

21 2012 IECC Update21 Field Inspection Foundation Inspection Rough Inspection Final Inspection Compliance Non compliance Certificate of Occupancy Reinspection Exterior Insulation Inspection Structural Insulated Panel Foundation Inspection Insulated Concrete Forming Systems Inspection Pre-cast Insulated Concrete System Inspection Crawl space Wall Inspection Compliance Non compliance Reinspection Air Barrier Inspection Sealing Inspection Fenestration Inspection Insulation Inspection Mechanical Inspection Concealed Service Water Heating System Inspection Compliance Non compliance Reinspection Insulation –Inspections (4) Mechanical – Inspections (5) Service Water Heating Inspections (3) Snow Melt Controls Inspection Swimming Pool Inspections (3) Certificate Inspection 2012 IBC Update with Maryland Amendments21

22 IECC Inspection 1.Determine compliance method used for project. 2.Field inspections will normally occur at the following stages; 1.Foundation/Slab inspection 2.Rough Inspection 3.Final Inspection 3.Verify during the required inspections that the project complies with the prescriptive or performance provisions as determined during the Plan Review 2012 IBC Update with Maryland Amendments22

23 IECC Inspection 5.Verify compliance with mandatory provisions of the code; 2012 IBC Update with Maryland Amendments23 1.Air Leakage 2.HVAC System Controls 3.Duct Sealing 4.Mechanical System Piping 5.Circulating Hot Water Systems. 6.Mechanical Ventilation, equipment sizing 7.Swimming pool heating, time switches and covers. 8.Lighting Equipment 6.Verify third party inspection for sealing of Building Thermal Envelope and Duct tightness are within code specified limits. (Duct Tightness testing not required when ducts and air handlers are entirely within the building thermal envelope.)

24 IECC Inspection 5.Verify compliance with mandatory provisions of the code; 6.Verify third party inspection for sealing of Building Thermal Envelope and Duct tightness are within code specified limits. (Duct Tightness testing not required when ducts and air handlers are entirely within the building thermal envelope.) 2012 IBC Update with Maryland Amendments24 1.Air Leakage 2.HVAC System Controls 3.Duct Sealing 4.Mechanical System Piping 5.Circulating Hot Water Systems. 6.Mechanical Ventilation, equipment sizing 7.Swimming pool heating, time switches and covers. 8.Lighting Equipment

25 Arrangement and format of the 2012 IECC The IECC contains two separate sets of provisions. The IECCResidential Provisions apply to detached one- and two-family dwellings and multiple single family dwellings as well as Group R-2, R-3 and R-4 buildings three stories or less in height. The IECCCommercial Provisions apply to all buildings that are not included in the definition of Residential buildings. 2012 IECC Update25 Handout page 2

26 Arrangement and format of the 2012 IECC IECCCommercial Provisions, therefore, contain provisions for residential buildings four stories or greater in height. 2012 IECC Update26 Handout page 2

27 Arrangement and format of the 2012 IECC Each set of provisions is independent; containing a chapter in: Scope and Administration, Definitions, General Requirements and Energy Efficiency Requirements applicable to buildings within its scope. 2012 IECC Update27 Handout page 2

28 Table of Contents 2012 IECC Update28 Handout page 2

29 Scope and Administration Chapter 1 2012 IECC Update 29

30 Chapter 1 Scope and Administration Changes Identical for both Commercial and Residential 2012 IECC Update30

31 Chapter 1 Scope and Administration Chapter 1: Scope and Administration Code SectionSection Title Description of Change 20122009 C- 101.2 R- 101.2 101.2ScopeAdded building site and associated systems and equipment C- 101.3 R- 101.3 101.3IntentAdded that the regulation of the code will conserve energy over useful life of the each building. C106R106106.1 Referenced Standards Added information on conflicts and provisions in referenced codes and standards 2012 IECC Update31 Handout page 3

32 Chapter 1 Scope and Administration 1.What will conserve energy over the useful life of each building? Constructing and using the mechanical systems, service water-heating systems, and electric power and lighting systems located on the building and on the building site in accordance with this code. 2012 IECC Update32 Handout page 2\3

33 Definitions Chapter 2 2012 IECC Update 33

34 Chapter 2 Definitions NEW for Commercial Buildings Building commissioning A process that verifies and documents that the selected building systems have been designed, installed and function according to the owners project requirements and construction. 2012 IECC Update34 Handout page 3

35 Chapter 2 Definitions NEW for Commercial Buildings Building entrance Any door, set of doors, doorway or other form of portal that is used to gain access to the building from outside by the public. 2012 IECC Update35 Handout page 3

36 Chapter 2 Definitions NEW for Commercial/Residential Building site A contiguous area of land that is under the ownership or control of one entity. 2012 IECC Update36 Handout page 3

37 Chapter 2 Definitions NEW for Commercial Buildings Coefficient of performance (COP) Cooling The ratio of the rate of heat removal to the rate of energy input, in consistent units, for a complete refrigerating system or some specific portion of that system under designated operating conditions. 2012 IECC Update37 Handout page 3

38 Chapter 2 Definitions NEW for Commercial Buildings Coefficient of performance (COP) Heating The ratio of the rate of heat removal to the rate of heat delivered to the rate of energy input, in consistent units, for a complete heat pump system, including the compressor and, if applicable, auxiliary heat, under designated operating conditions. 2012 IECC Update38 Handout page 3

39 Chapter 2 Definitions NEW for Commercial/Residential Continuous air barrier A combination of materials and assemblies that restrict or prevent the passage of air through the building thermal envelope. 2012 IECC Update39 Handout page 3

40 Chapter 2 Definitions NEW for Commercial/Residential Demand recirculation water system A water distribution system where pump(s) prime the service hot water piping with heated water upon demand for hot water. 2012 IECC Update40 Handout page 3

41 Chapter 2 Definitions NEW for Commercial Dynamic glazing Any fenestration product that has the fully reversible ability to change its performance properties, including U-factor, solar heat gain coefficient (SHGC), or VT. 2012 IECC Update41 Handout page 3

42 Chapter 2 Definitions NEW for Commercial Enclosed space A volume surrounded by solid surfaces, such as walls, floors, roofs and openable devices, such as doors and operable windows. 2012 IECC Update42 Handout page 3

43 Chapter 2 Definitions NEW for Commercial Equipment room A space that contains electrical equipment, mechanical equipment, machinery, water pumps or hydraulic pumps that are a function of the buildings services. 2012 IECC Update43 Handout page 3

44 Chapter 2 Definitions NEW for Commercial Fenestration product, field fabricated A fenestration product whose frame is made at the construction site of standard dimensional lumber or other materials that were not previously cut, or otherwise formed with the specific intention of being used to fabricate a fenestration product or exterior door. Field fabricated does not include site-built fenestration. 2012 IECC Update44 Handout page 4

45 Chapter 2 Definitions NEW for Commercial/Residential Fenestration product, site-built A fenestration designed to be made up of field- glazed or field-assembled units using specific factory cut or otherwise factory formed framing and glazing units. Examples of site-built fenestration include storefront systems, curtain walls, and atrium roof systems. 2012 IECC Update45 Handout page 4

46 Chapter 2 Definitions NEW for Commercial Furnace electricity ratio The ratio of furnace electricity use to total furnace energy computed as ratio = (3.412 × E AE )/1000 × E f + 3.412 × E AE ) E AE (average annual auxiliary electrical consumption) E f (average annual fuel energy consumption) E f is expressed in millions of Btus per year. 2012 IECC Update46 Handout page 4

47 Chapter 2 Definitions NEW for Commercial General lighting Lighting that provides a substantially uniform level of illumination throughout an area. General lighting shall not include decorative lighting or lighting that provides a dissimilar level of illumination to serve a specialized application or feature within such area. 2012 IECC Update47 Handout page 4

48 Chapter 2 Definitions NEW for Commercial Integrated part load value (IPLV) A single-number figure of merit based on part-load energy efficiency ratio (EER), COP, or kW per ton expressing part-load efficiency for airconditioning and heat pump equipment on the basis of weighted operation at various load capacities for equipment. 2012 IECC Update48 Handout page 4

49 Chapter 2 Definitions NEW for Commercial Nonstandard part load value (NPLV) A single-number part-load efficiency figure of merit calculated and referenced to conditions other than IPLV conditions, for units that are not designed to operate at ARI standard rating conditions. 2012 IECC Update49 Handout page 4

50 Chapter 2 Definitions NEW for Commercial On-site renewable energy Energy derived from solar radiation, wind, waves, tides, landfill gas, biomass, or the internal heat of the earth. The energy system providing on-site renewable energy shall be located on the project site. 2012 IECC Update50

51 Chapter 2 Definitions NEW for Commercial/Residential Visible Transmittance (VT) The ratio of visible light entering the space through the fenestration product assembly to the incident visible light. VT includes the effects of glazing material and frame and is expressed as a number between 0 and 1 2012 IECC Update51 Handout page 4

52 Chapter 2 Definitions NEW for Residential Whole House Mechanical Ventilation System An exhaust system, supply system, or combination thereof that is designed to mechanically exchange indoor air with outdoor air when operating continuously or through a programmed intermittent schedule to satisfy the whole house ventilation rates 2012 IECC Update52 Handout page 4

53 Chapter 2 Definitions REVISED for Commercial/Residential Building Any mechanical systems, service water heating systems and electric power and lighting systems located on the building site and supporting the building. 2012 IECC Update53 Handout page 4

54 Chapter 2 Definitions REVISED for Commercial/Residential Residential Building Revised to clarify that it includes one- and two-family dwellings and multiple single family dwellings (townhouses). 2012 IECC Update 54 Handout page 4

55 Chapter 2 Definitions REVISED for Commercial/Residential Skylight Revised to slope less than 60 degrees (1.05 rad). 2012 IECC Update55 Handout page 4

56 Chapter 2 Definitions 2.What is the difference between building and building site? A building is any structure used or intended for supporting or sheltering any use or occupancy, including any mechanical systems, service water-heating systems, and electric power and lighting systems located on the building site and supporting the building. A building site is a contiguous area of land that is under the ownership or control of one entity. 2012 IECC Update56 Handout page 5

57 Chapter 2 Definitions 3.What is a whole-house mechanical ventilation system? Whole-house mechanical ventilation system is an exhaust system, supply system or combination thereof that is designed to mechanically exchange indoor air with outdoor air when operating continuously or through a programmed intermittent schedule to satisfy the whole-house ventilation rates. 2012 IECC Update57 Handout page 5

58 Chapter 2 Definitions 4.What is a continuous air barrier? A combination of materials and assemblies that restrict or prevent the passage of air through the building thermal envelope. 2012 IECC Update58 Handout page 5

59 General Regulations Chapter 3 2012 IECC Update 59

60 Chapter 3 General Requirements REVISED for Commercial/Residential Materials, Systems and Equipment Revised to give three options. 1.ANSI/ASHRAE/IESNA 90.1; 2.The requirements of Sections C402 through C405; 3.The requirements of Sections C402.4, C403.2, C404, C405.4, C405.6 and C405.7. 2012 IECC Update60 Handout page 5

61 Chapter 3 General Requirements REVISED for Commercial/Residential C303.1.3/R303.1.3 Fenestration product rating: Label or Table 2012 IECC Update61 Handout page 5

62 Chapter 3 General Requirements Label or Table Solutions National Fenestration Rating Council Component Modeling Approach (CMA) for site-built commercial windows. Field Labeling available for missing labels. 2012 IECC Update62 Handout page 5

63 Chapter 3 General Requirements REVISED for Commercial/Residential C303.1.3/R303.1.3 Fenestration product rating Tables C303.1.3(3)& R303.1.3(3) Default Glazed Fenestration Include visible transmittance (VT) 2012 IECC Update 63 Handout page 5-6

64 Chapter 3 General Regulations 5.What is the importance of VT values? Visible transmittance (VT) indicates the effects of glazing material and frame. 2012 IECC Update64 Handout page 6

65 Chapter 3 General Regulations 6.What is the VT value for a double glazed, tinted window? Visible transmittance (VT) for a double glazed, tinted window is 0.3 2012 IECC Update65 Handout page 6

66 Commercial Energy Efficiency Chapter 4 2012 IECC Update 66

67 Section C401 General REVISED The section has been revised for clarity. Compliance with ANSI/ASHRAE/IESNA 90.1 is still an acceptable alternative. 2012 IECC Update67 Handout page 6

68 Section C402 Building Envelope Requirements REVISED Building envelope performance are more stringent. For example: 1.Roof solar reflectance and thermal emittance. 2.Insulation performance is improved. 3.Fenestration performance allows more flexibility. 4.Air leakage requirements expanded. 2012 IECC Update68 Handout page 6

69 Table R402.1.1 Insulation & fenestration requirements by component REVISED Fenestration and skylight U-factors are improved. Ceiling insulation R-values increase: R-30 to R-38 in Climate Zones 2 and 3, and R-38 to R-49 in Climate Zones 4 and 5. Wall insulation R-values increase from R-13 to R-20 or R-13 + 5 in Climate Zones 3 and 4. Note h clarified regarding continuous isolation. Add SHGC 0.40 requirement for windows in Climate Zone 4. 2012 IECC Update69 Handout page 17

70 Table R402.1.1 Insulation & fenestration requirements by component 2012 IECC Update70 Handout page 17 Maryland Climate Zones 4 and 5

71 Table R402.1.1 Insulation & fenestration requirements by component Note h. First value is cavity insulation, second is continuous insulation or insulated siding, so 13+5 means R-13 cavity insulation plus R-5 continuous insulation or insulated siding. If structural sheathing covers 40 percent or less of the exterior, continuous insulation R-value shall be permitted to be reduced by no more than R-3 in the locations where structural sheathing is used – to maintain a consistent total sheathing thickness. 2012 IECC Update71 Handout page 17

72 Table R402.1.1 Insulation & fenestration requirements by component 2012 IECC Update72

73 Table R402.1.3 Equivalent U-Factors REVISED Data and footnotes changed. 2012 IECC Update73 Handout page 17

74 Table R402.1.3 Equivalent U-Factors 2012 IECC Update74

75 R402.1.4 Total UA alternative. If the total building thermal envelope UA (sum of U-factor times assembly area) is less than or equal to the total UA resulting from using the U-factors in Table R402.1.3 (multiplied by the same assembly area as in the proposed building), the building shall be considered in compliance with Table R402.1.1. The UA calculation shall be done using a method consistent with the ASHRAE Handbook of Fundamentals and shall include the thermal bridging effects of framing materials. The SHGC requirements shall be met in addition to UA compliance. 2012 IECC Update75

76 Table C402.2.1.1 2012 IECC Update 76 Handout page 6 NEW

77 C402.2.6 Slabs on grade REVISED Added exception that where the slab-on- grade floor is greater than 24 inches (61 mm) below the finished exterior grade, perimeter insulation is not required. 2012 IECC Update77 Handout page 6

78 C402.2.8 Insulation of radiant heating systems NEW Radiant heating design information added and the bottom surfaces of floor structures incorporating radiant heating shall be insulated. 2012 IECC Update78 Handout page 6

79 C402.3.1 Maximum area REVISED Excludes opaque spandrel panels also in vertical fenestration areas, which shall not exceed 30 percent of the above-grade wall area. The skylight area shall not exceed 3 percent of the gross roof area. 2012 IECC Update79 Handout page 6

80 C402.3.1.1 Increased vertical fenestration area with daylighting controls NEW In Climate Zones 1 through 6, a maximum of 40 percent of the gross above-grade wall area shall be permitted, provided three items are adhered to and added exception. 2012 IECC Update80 Handout page 7

81 C402.3.1.2 Increased skylight area with daylighting controls NEW Skylight area increased from 3 to 5 percent with automatic daylighting controls. 2012 IECC Update81 Handout page 7

82 Section C402.3.2 Minimum skylight fenestration area NEW Certain spaces greater than 10,000 square feet (1393 m 2 ) and with ceiling heights greater than 15 feet (4572 mm) are required to provide a total daylight zone under skylights of not less than half the floor area. 2012 IECC Update 82 Handout page 7

83 C402.3.2.1 Lighting controls in daylight zones under skylights NEW Lighting in the daylight zone shall be controlled by multilevel lighting controls with exception. 2012 IECC Update83 Handout page 7

84 Table C402.3.3.1 SHGC Adjustment Multipliers NEW Table of SHGC adjustment multipliers 2012 IECC Update84 Handout page 7

85 C402.3.3.2 Increased vertical fenestration SHGC NEW In Climate Zones 1 through 3, vertical fenestration entirely located not less than 6 feet (1729 mm) above the finished floor shall be permitted a maximum of SHGC of 0.40. 2012 IECC Update85 Handout page 7

86 C402.3.3.3 Increased skylight SHGC NEW In Climate Zones 1 through 6 skylights shall be permitted a maximum SHGC of 0.60 where located above daylight zones provided with automated daylighting controls. 2012 IECC Update86 Handout page 7

87 C402.3.3.4 Increased skylight U-factor NEW Where skylights are installed above daylight zones provided with automatic daylighting controls, a maximum U-factor of 0.9 shall be permitted in Climate Zones 1 through 3, and a maximum U-factor of 0.75 shall be permitted in Climate Zones 4 through 8. 2012 IECC Update87 Handout page 7

88 C402.3.3.5 Dynamic glazing NEW Dynamic glazing requirements. Dynamic glazing shall be considered separately from other fenestration, and area-weighted averaging with other fenestration that is not dynamic glazing shall not be permitted. 2012 IECC Update88 Handout page 7

89 C402.3.4 Area-weighted U-factor NEW Area weighted U-factor is permitted to satisfy the U-factor requirements for commercial buildings. 2012 IECC Update89 Handout page 7

90 C402.4.1 Air barriers NEW A continuous air barrier shall be provided throughout the building thermal envelope with exception in Climate Zones 1, 2 and 3. 2012 IECC Update90 Handout page 7

91 C402.4.1.1 Air barrier construction NEW Construction details of air barriers with exception. 2012 IECC Update91 Handout page 7

92 Section C402.4.1.2 Air barrier compliance options NEW Three options-choose from one or all: Materials Assemblies Building Test 2012 IECC Update92 Handout page 7

93 Section C402.4.1.2.1 Materials (Option) NEW Materials deemed to comply if installed properly: 3/8-inch (10 mm) plywood. 3/8-inch (10 mm) OSB. ½-inch (12 mm) Extruded polystyrene. ½-inch (12 mm) Foil backed polyisocyanurate. 1 ½-inch (36 mm) Closed cell spray foam. 4 ½-inches (113 mm) Open cell spray foam ½-inch (12 mm) Gypsum board. ½-inch (12 mm) Cement board. 2012 IECC Update93 Handout page 8

94 Section C402.4.1.2.1 Materials (Option) NEW Materials deemed to comply if installed properly: Built up roofing. Modified bitumen roofing. Fully adhered single ply roofing. 5/8- inch (16 mm) Portland sand parge or gypsum plaster. Cast in place or precast concrete. Fully grouted block masonry. Sheet steel or aluminum. 2012 IECC Update94 Handout page 8

95 Section C402.4.1.2.2 Assemblies (Option) NEW Presumptive compliance if installed properly: Sealed concrete masonry wall units (CMU) or ½-inch (12 mm) parge, stucco or plaster 2012 IECC Update95 Handout page 8

96 Section C402.4.1.2.3 Building test (Option) NEW Building air leakage rate cannot exceed 0.40 cfm/ft 2 at 0.3 inches water gauge (0.2 L/s · m 2 at 75 Pa) in accordance with ASTM E 779. 2012 IECC Update96 Handout page 8

97 Section C402.4.3 Air leakage of fenestration REVISED Fenestration assemblies are required to be NFRC tested and labeled unless: Field Fabricated (note definition) or Entire Building Test per C402.4.1.2.3 2012 IECC Update97 Handout page 8

98 Table C402.4.3 MAXIMUM AIR INFILTRATION RATE FOR FENESTRATION ASSEMBLIES 2012 IECC Update98

99 C402.4.4 Doors and access openings to shafts, chutes, stairways, and elevator lobbies NEW Requirements for doors and access openings from conditioned space to shafts, chutes, stairways and elevator lobbies with exception. 2012 IECC Update99 Handout page 8

100 C402.4.5 Air intakes, exhaust openings, stairways and shafts REVISED Stairway enclosures and elevator shaft vents, and other outdoor intakes and exhaust openings, integral to the building envelope shall be provided with dampers, whereas before they had to be Class I motorized dampers with maximum leakage rate. 2012 IECC Update100 Handout page 8

101 C402.4.5.1 Stairway and shaft vents NEW Stairway and shaft vents shall be provided with Class I motorized dampers with max. leakage rate. 2012 IECC Update101 Handout page 8

102 C402.4.5.2 Outdoor air intakes and exhausts NEW Outdoor air supply and exhaust openings shall be provided with Class IA motorized dampers with exceptions. 2012 IECC Update102 Handout page 8

103 C402.4.7 Vestibules REVISED Requirements for vestibules have been clarified; i.e., employee only doors are explicitly exempted. 2012 IECC Update103 Handout page 8

104 C403 Building Mechanical Systems NEW Specific standards for certain heating, ventilation and airconditioning (HVAC) system types. 2012 IECC Update104 Handout page 8

105 C403.2.3.1 Water-cooled centrifugal chilling packages NEW Maximum full load kW/ton and NPLV ratings adjusted using equations was an exception in 2009 IECC. 2012 IECC Update105 Handout page 8

106 C403.2.3.2 Positive displacement (air and water-cooled chilling packages) NEW Positive displacement chilling packages were not covered by the 2009 IECC. 2012 IECC Update106 Handout page 8

107 Table C403.2.3(8) Heat Rejection Equipment NEW 2012 IECC Update107 Handout page 8

108 Table C403.2.3(9) Heat Transfer Equipment NEW New table of liquid-to-liquid heat exchangers not requiring a minimum efficiency, listing test procedure with footnote. EQUIPMENT TYPE SUBCATEGORYMINIMUM EFFICIENCY TEST PROCEDUREa Liquid-to-liquid heat exchangers Plate typeNRAHRI 400 2012 IECC Update108 Handout page 8

109 C403.2.4.3.3 Automatic start capabilities NEW Automatic start-control requirements. 2012 IECC Update109 Handout page 8

110 C403.2.5.1 Demand controlled ventilation REVISED Changed occupant load to 25 people per 1,000 square feet (93 m 2 ) of floor area; and changed exception requirements. 2012 IECC Update110 Handout page 8

111 C403.2.6 Energy recovery ventilation systems REVISED Changed supply airflow rate and revised exceptions from 2009 IECC. 2012 IECC Update111 Handout page 9

112 Table C403.2.6 Energy Recovery Equipment NEW New table of climate zones to percent of outdoor air for design supply fan airflow rate. 2012 IECC Update112 Handout page 9

113 C403.2.8 Piping insulation REVISED Exception 3 regarding temperature range. Piping that conveys fluids that have a design operating temperature range between 60°F (15°C) and 105°F (41°C). 2012 IECC Update113 Handout page 9

114 C403.2.8.1 Protection of piping insulation NEW Piping insulation requirements to protect piping. 2012 IECC Update114 Handout page 9

115 C403.2.9 Mechanical systems commissioning and completion requirements NEW Mechanical systems shall be commissioned and completed in accordance with Section C408.2. 2012 IECC Update115 Handout page 9

116 C403.2.10.1 Allowable fan floor horsepower REVISED Exception: The following fan systems are exempt from allowable fan floor horsepower requirement. 1.Hospital, vivarium and laboratory systems that utilize flow control devices on exhaust and/or return to maintain space pressure relationships. 2.Individual exhaust fans with motor nameplate horsepower of 1 hp or less. 2012 IECC Update116 Handout page 9

117 Table C403.2.10.1(2) Fan Power Limitation Pressure Drop Adjustment Revised data. DEVICEADJUSTMENT Credits Fully ducted return and/or exhaust air systems 0.5 inch w.c. (2.15 in w.c. for laboratory and vivarium systems) Biosafety cabinetPressure drop of device at fan system design condition. Energy recovery device, other than coil runaround loop (2.2 × energy recovery effectiveness) – 0.5 inch w.c. for each airstream Coil runaround loop0.6 inch w.c. for each airstream Exhaust system serving fume hoods0.35 inch w.c. Laboratory and vivarium exhaust systems in high-rise buildings 0.25 inch w.c./100 feet of vertical duct exceeding 75 feet 2012 IECC Update117 Handout page 9 REVISED

118 C403.3.1 Economizers REVISED Economizer requirements increased. 2012 IECC Update118 Handout page 9

119 Table C403.3.1(1) Economizer Requirements REVISED Climate zones economizer requirements and cooling systems greater than 33,000 Btu/h (9,672 W) whereas it was 54,000 Btu/h. (15,827 W). Footnote a revised. 2012 IECC Update119 Handout page 9

120 Section C403.3.1.1 Air economizers NEW Air economizers shall comply with Sections C403.3.1.1.1 through C403.3.1.1.4. Design capacity economizer, air economizers, control signal, high-limit shutoff and relief of excess outdoor air. 2012 IECC Update120 Handout page 9

121 Table C403.3.1.1.3(1) High-limit Shutoff Control Options for Air Economizers NEW Table lists climate zones and allowed control types for air economizers. 2012 IECC Update121 Handout page 9

122 Table C403.3.1.1.3(2) High-limit Shutoff Control Setting for Air Economizers NEW Table lists device type per climate zone with required high limit noting temperature of outside air to return air; and outdoor temperatures. 2012 IECC Update122 Handout page 9

123 C403.4.1 Economizers REVISED Water economizers shall comply with Sections C403.4.1.1 through C403.4.1.4 for design capacity, maximum pressure drop, integrated economizer control and economizer heating system impact. 2012 IECC Update123 Handout page 9

124 C403.4.2 Variable air volume (VAV) fan control REVISED VAV fans with 7.5-horsepower (5.6 kW) motor requirements, whereas in 2009 IECC it was VAV fans with 10 horsepower (7.5 kW) requirements. Also, additional sections on static pressuresensor location and set points for direct digital control. 2012 IECC Update124 Handout page 9

125 C404 Service Water Heating REVISED 1.Piping insulation requirement beneficial. 2.Controls to be readily accessible. 3.Pools and spas requirement revised. 2012 IECC Update125 Handout page 9

126 Section C404.5 Piping insulation REVISED Added exception to allow manufacturers insulation instructions for heat-traced piping systems. 2012 IECC Update126 Handout page 9

127 Section C 404.6 Hot water system controls NEW Added manual operation to circulating hot water system so that pumps or heat trace can be turned off when there is limited hot water demand. Ready access shall be provided to the operating controls. 2012 IECC Update127 Handout page 9

128 Section C404.7 Pools and inground permanently installed spas REVISED Pools and in ground, permanently installed spas shall comply with Sections C404.7.1 through C404.7.3 regarding heaters, time switches and covers. 2012 IECC Update128 Handout page 9

129 Section C405 Electrical Power and Lightning System REVISED Lighting Control requirements are expanded. Space-by-space option added. 2012 IECC Update129 Handout page 9

130 C405.2.1 Manual lighting controls REVISED All buildings shall include manual lighting controls, whereas in the 2009 IECC lighting systems were provided with controls. 2012 IECC Update130 Handout page 9

131 C405.2.1.2 Light reduction controls REVISED Exceptions revised. 2012 IECC Update131 Handout page 9

132 C405.2.2 Additional lighting controls REVISED Added four exceptions. Additional lighting controls need not be provided in the following spaces: 1.Sleeping units. 2.Spaces where patient care is directly provided. 3.Spaces where an automatic shutoff would endanger occupant safety or security. 4.Lighting intended for continuous operation. 2012 IECC Update132 Handout page 9

133 C405.2.2.2 Occupancy sensors NEW Occupancy sensors requirements. 2012 IECC Update133 Handout page 10

134 C405.2.2.3 Daylight zone control REVISED Each daylight control zone shall not exceed 2,500 square feet (232 m 2 ). Manual daylighting controls, automatic daylighting controls and multilevel lighting controls added. 2012 IECC Update134 Handout page 10

135 C405.2.3 Specific application controls NEW Specific application controls requirements. 2012 IECC Update135 Handout page 10

136 C405.5.2 Interior lighting power REVISED Building area and space-by-space methods to determine the total interior lighting power allowance. 2012 IECC Update136 Handout page 10

137 Tables C405.5.2(1, 2) Interior Lighting Power Allowances: Building Area Method and Space- by space Method REVISED Tables list building areas and lighting power densities and formulas to determine interior lighting power allowances. 2012 IECC Update137 Handout page 10

138 Section C406 Additional Efficiency Package Options NEW Choose one: 1.Efficient HVAC performance 2.Efficient lighting 3.On-site renewable energy 2012 IECC Update138 Handout page 10

139 C406.2 Efficient HVAC performance NEW Equipment shall meet the minimum efficiency requirements of Tables 506.2(1) through (7). 2012 IECC Update139 Handout page 10

140 Tables C406.2(1, 2, 3) Equipment by Size and Minimum Efficiency REVISED Air conditioners, heat pumps and packaged terminal AC and heat pumps listed by size and efficiency. 2012 IECC Update140 Handout page 10

141 Table C406.2(4) Warm Air Furnaces and Combination Warm Air Furnaces/Air-Conditioning Units, Warm Air Duct Furnaces and Unit Heaters, Efficiency Requirements REVISED Table for equipment by size and their minimum efficiencies for climate zones and test procedure required. 2012 IECC Update141 Handout page 10

142 Table C406.2(4) 2012 IECC Update142

143 Table C406.2(5) Boilers, Efficiency Requirements REVISED Table lists equipment by steam and hot water rather than if boiler is gas or oil fired. 2012 IECC Update143 Handout page 10

144 Table C406.2(6) Chillers Efficiency Requirements REVISED Revised table data and footnotes. 2012 IECC Update144 Handout page 10

145 C406.3 Efficient lighting system NEW Whole building lighting power density requirements. 2012 IECC Update145 Handout page 10

146 Table C406.3 Reduced Interior Lighting Power NEW Table for reduced interior lighting power density (LPD) for building area types. 2012 IECC Update146 Handout page 10

147 Section C406.4 On-site Renewable Energy NEW Total minimum ratings of on-site renewable energy systems shall comply with one of the following: Provide not less than 1.75 Btus (1850 W) or 0.50 watt per square foot (5.4 W/m 2 ) of conditioned floor area. Provide not less than 3 percent of the energy used within the building for building mechanical and service water heating equipment and lighting. 2012 IECC Update147 Handout page 10

148 Section C408 System Commissioning NEW Verifies that the building has been built and is operating as designed. C408.2 Mechanical systems commissioning and completion requirements. C408.3 Lighting system functional testing. 2012 IECC Update148 Handout page 10

149 Section C408.2 Mechanical systems commissioning and completion requirements NEW Prior to passing the final mechanical inspection, the registered design professional shall provide evidence of mechanical systems commissioning and completion. 2012 IECC Update 149 Handout page 10

150 Section C408.2.1 Commissioning plan NEW A commissioning plan shall be developed by a registered design professional or approved agency. 2012 IECC Update150 Handout page 10

151 Section C408.2.2 Systems adjusting and balancing NEW HVAC systems adjusting and balancing activities Air systems Hydronic systems 2012 IECC Update151 Handout page 10

152 Section C408.2.3 Functional performance testing NEW C408.2.3.1 Equipment. C408.2.3.2 Controls. C408.2.3.3 Economizers. 2012 IECC Update\152 Handout page 10-11

153 Section C408.2.4 Preliminary commissioning report NEW Completed and certified by the registered design professional or approved agency. 2012 IECC Update153 Handout page 11

154 Section C408.2.5 Documentation requirements NEW Provide to building owner within 90 days of certificate of occupancy. Drawings. Manuals. System balancing report. Final commissioning report. 2012 IECC Update154 Handout page 11

155 C408.3 Lighting system functional testing NEW Controls for automatic lighting systems. 2012 IECC Update155 Handout page 11

156 C408.3.1 Functional testing NEW Testing that will ensure that control hardware and software are calibrated, adjusted, programmed and in proper working condition. 2012 IECC Update156 Handout page 11

157 Chapter 4: Commercial Energy Efficiency 7.List the roof requirements for a commercial building in this code. 2012 IECC Update157 For commercial buildings, the roof requirements are as follows: Low-sloped roofs shall have one or more options: a. Three-year aged solar reflectance of 0.55 and three-year aged thermal emittance of 0.75. b. Initial solar reflectance of 0.7 and initial emittance of 0.75. c. Three-year-aged solar reflectance index of 64. d. Initial solar reflectance index of 82. Handout page 11

158 Chapter 4: Commercial Energy Efficiency 8.What is the minimum skylight fenestration area? 2012 IECC Update158 Handout page 11 The minimum skylight fenestration area (see Section C402.3.2), the total daylight zone under skylights shall be not less than half the floor area and shall provide a minimum skylight area to daylight zone under skylights of either: – Not less than 3 percent with a skylight VT of at least 0.4. – Provide a minimum skylight effective aperture of at least 1 percent determined by the equation: Skylight effective aperture = 0.85 x skylight area x skylight VT x WT (area weighted average well factor).

159 Chapter 4: Commercial Energy Efficiency 9.The buildings shall comply with one of the three additional energy efficiency packages listed in this code. What are the three additional energy efficiency packages? 2012 IECC Update159 Handout page 11 Buildings shall comply with one of the additional efficiency packages as follows: – C406.2 Efficient HVAC Performance. – C406.3 Efficient (whole-building) lighting system. – C406.4 On-Site Renewable Energy (0.5 W/ft² or 3 percent).

160 Chapter 4: Commercial Energy Efficiency 10.List the requirements of mechanical systems commissioning and completion in this code. 2012 IECC Update160 Section C408.2 Mechanical systems commissioning and completion requirements. Prior to passing the final mechanical inspection, the registered design professional shall provide evidence of mechanical systems commissioning and completion in accordance with the provisions of this section. Construction document notes shall clearly indicate provisions for commissioning and completion requirements, and are permitted to refer to specifications for further requirements. Copies of all documentation shall be given to the owner and made available to the code official upon request. Handout page 12

161 Chapter 4: Commercial Energy Efficiency 11.What is a functional test for an economizer? What is a functional test for control hardware and software? 2012 IECC Update161 A functional test for an economizer is the operation of its components and its interfacing relationships in accordance with approved plans and specifications such that operation, function and maintenance serviceability is confirmed. Testing shall include all modes and sequence of operation, including under full load, part load and following emergency conditions. Functional testing for control hardware and software are calibrated, adjusted, programmed and in proper working condition in accordance with the construction documents and manufacturers instructions. Handout page 12

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174 Residential Energy Efficiency Chapter 4 2012 IECC Update 174

175 R401.2 Compliance REVISED Added that projects comply with either mandatory and with either prescriptive or performance approach rather than section references in the code. For example: 401.3 Certificate (Mandatory) or 402.1 General (Prescriptive). 2012 IECC Update175 Handout page 17

176 R401.3 Certificate REVISED Certificate shall be completed and posted by builder or registered design professional. 2012 IECC Update176 Handout page 17

177 Section R402 Building Thermal Envelope REVISED 1.Insulation & fenestration values improved. 2.Eave baffles. 3.Steel frame wall values added. 4.Sunrooms have been reworked. 5.Air leakage controls are required. 2012 IECC Update177 Handout page 17

178 Table R402.1.1 Insulation & fenestration requirements by component REVISED Fenestration and skylight U-factors are improved. Ceiling insulation R-values increase: R-30 to R-38 in Climate Zones 2 and 3, and R-38 to R-49 in Climate Zones 4 and 5. Wall insulation R-values increase from R-13 to R-20 or R-13 + 5 in Climate Zones 3 and 4. Note h clarified regarding continuous isolation. Add SHGC 0.40 requirement for windows in Climate Zone 4. 2012 IECC Update178 Handout page 17

179 Table R402.1.1 Insulation & fenestration requirements by component 2012 IECC Update179 Handout page 17 Maryland Climate Zones 4 and 5

180 Table R402.1.1 Insulation & fenestration requirements by component Note h. First value is cavity insulation, second is continuous insulation or insulated siding, so 13+5 means R-13 cavity insulation plus R-5 continuous insulation or insulated siding. If structural sheathing covers 40 percent or less of the exterior, continuous insulation R-value shall be permitted to be reduced by no more than R-3 in the locations where structural sheathing is used – to maintain a consistent total sheathing thickness. 2012 IECC Update180 Handout page 17

181 Table R402.1.1 Insulation & fenestration requirements by component 2012 IECC Update181

182 Table R402.1.3 Equivalent U-Factors REVISED Data and footnotes changed. 2012 IECC Update182 Handout page 17

183 Table R402.1.3 Equivalent U-Factors 2012 IECC Update183

184 R402.2 Specific insulation requirements REVISED In addition to the requirements of Section R402.1, insulation shall meet the specific requirements of Sections R402.2.1 through R402.2.12. 2012 IECC Update184 Handout page 17

185 R402.2.3 Eave baffle NEW A baffle is required adjacent to soffit and eave vents. 2012 IECC Update185 Handout page 17

186 R402.2.6 Steel-frame ceilings, walls and floors REVISED Changed references to Sections in this code. 2012 IECC Update186 Handout page 17

187 Table R402.2.6 Steel-Frame Ceiling, Wall and Floor Insulation R Values REVISED Data for steel- framed wall 16 inches (406 mm) on center and steel- framed wall 24 inches (610 mm) on center was added. 2012 IECC Update187 Handout page 17

188 R402.2.12 Sunroom insulation REVISED Title and requirements with exceptions. 2012 IECC Update188 Handout page 17

189 R402.3 Fenestration REVISED Requirements of fenestration with Sections R402.3.1 through R402.3.6. 2012 IECC Update189 Handout page 17

190 R402.3.5 Sunroom U-factor REVISED Fenestration requirements with exception for sunrooms. U factor values changed from 2009 IECC. 2012 IECC Update190 Handout page 17

191 R402.4.1 Building thermal envelope REVISED Sealing methods and requirements changed from 2009 IECC. 2012 IECC Update191 Handout page 18

192 R402.4.1.1 Installation NEW The components of the building thermal envelope shall be installed in accordance with the manufacturer instructions. Where required by the code official, an approved third party must inspect all components and verify code compliance. 2012 IECC Update192 Handout page 18

193 R402.4.1.2 Testing 2012 IECC Update193 REVISED At 50 Pa: 5 Air changes per hour (ACH) Climate Zones 1 and 2. 3 ACH in Climate Zones 3 through 8. Handout page 18

194 R402.4.2 Fireplaces REVISED New wood-burning fireplaces shall have tight-fitting flue dampers and outdoor combustion air. Also, they must have gasketed doors as shown in Table R402.4.1.1. 2012 IECC Update194 Handout page 18

195 R402.4.4 Recessed lighting REVISED No change other than listing testing after air leakage rate for recessed luminaires. 2012 IECC Update195 Handout page 18

196 R403 Systems REVISED 1.Duct sealing options expanded. 2.Tested leakage reduced to 4cfm (113.3 L/min) per 100 square feet (9.29 m 2 ). 3.Piping insulation requirements have changed. 4.Ventilation fan efficiency. 5.Pools and inground spas. 2012 IECC Update196 Handout page 18

197 R403.2.2 Sealing REVISED Eliminated building cavities used as ducts shall be sealed. Testing requirements changed and exceptions were added. 2012 IECC Update197 Handout page 18

198 R403.2.2.1 Sealed air handler NEW Air handlers shall have a manufacturers designation for an air leakage of no more than 2 percent of the design airflow rate when tested. 2012 IECC Update198 Handout page 18

199 R403.2.3 Building cavities REVISED Building framing cavities shall not be used as ducts or plenums. This differs from 2009 IECC that stated building framing cavities shall not be used as supply ducts. 2012 IECC Update199 Handout page 18

200 R403.3.1 Protection of piping insulation NEW Piping insulation requirements Exposed to weather shall be protected from damage Adhesive tape shall not be permitted. 2012 IECC Update200 Handout page 18

201 R403.4 Service hot water systems REVISED Hot water systems shall be in accordance with Section R403.4.1, Circulating hot water systems (Mandatory), and Section R403.4.2, Hot water pipe insulation (Prescriptive). Note, in the 2009 IECC the title of this section was Circulating hot water systems. 2012 IECC Update201 Handout page 18

202 R403.4.1 Circulating hot water systems REVISED Eliminated insulating circulating service hot water piping with Group R-2. 2012 IECC Update202 Handout page 18

203 R403.4.2 Hot water pipe insulation NEW All hot water pipe, minimum R-3. Thermal resistance for piping listed as 1 through 9 in the code. 2012 IECC Update203 Handout page 18

204 Table R403.4.2 Maximum Run Length NEW Maximum run length for piping 3/8 inch (9.5 mm) to greater than 3/4 inch (19.1 mm) for all piping from the distribution manifold or the recirculation loop to a point of use. 2012 IECC Update204 Handout page 18

205 R403.5 Mechanical ventilation REVISED Ventilation must meet the International Residential Code or International Mechanical Code, or other means applicable. 2012 IECC Update205 Handout page 18

206 R403.5.1 Whole-house mechanical ventilation system fan efficacy NEW Introduces whole-house mechanical ventilation. 2012 IECC Update206 Handout page 18

207 TABLE R403.5.1 MECHANICAL VENTILATION SYSTEM FAN EFFICACY FAN LOCATION AIR FLOW RATE MINIMUM (CFM) MINIMUM EFFICACY (CFM/WATT) AIR FLOW RATE MAXIMUM (CFM) Range hoodsAny2.8 cfm/wattAny In-line fanAny2.8 cfm/wattAny Bathroom, utility room 101.4 cfm/watt< 90 Bathroom, utility room 902.8 cfm/wattAny 2012 IECC Update207 Handout page 18

208 Section R403.6 Equipment sizing (Mandatory) REVISED Removes reference to IRC for duct-sealing and sizing of systems. Updated reference to heating and cooling equipment sizing in accordance with ACCA Manual S-10, Residential Equipment Selection. ACCA Manual J-11, Residential Load Calculations, 8 th edition. 2012 IECC Update208 Handout page 18

209 R403.9 Pools and in ground permanently installed spas REVISED Heater, time switch and cover requirements for pools and in ground, permanently installed spas. 2012 IECC Update209 Handout page 18

210 R404 Electrical Power and Lighting Systems REVISED 75 percent of the total lamps shall be high efficacy lamps. Fuel Gas Lighting 2012 IECC Update210 Handout page 18

211 R404.1.1 Lighting equipment NEW Fuel gas lighting systems shall not have continuously burning pilot lights. 2012 IECC Update211 Handout page 19

212 R405 Stimulated Performance Alternative REVISED Process Is virtually unchanged- performance is improved. 2012 IECC Update212 Handout page 19

213 Table R405.5.2(1) Specifications for the Standard Reference and Proposed Designs REVISED Glazing, air exchange rate, heating systems and cooling systems standard reference design and proposed design have been revised. For the thermal distribution systems the standard reference design was eliminated and the proposed design was revised. Footnotes revised. Footnote c added that where required by the code official testing shall be conducted by an approved party. 2012 IECC Update213 Handout page 19

214 Table R405.5.2(1) Specifications for the Standard Reference and Proposed Designs REVISED Footnote d had the leakage area and reference to ASHRAE 119 eliminated. Instead hourly calculations as specified in the ASHRAE Handbook of Fundamentals or equivalent shall be used to determine the energy loads resulting from infiltration. Also, footnote h was revised as follows: For a proposed design without a proposed cooling system, a heating system with a prevailing federal minimum efficiency shall be assumed for both the standard reference design and proposed design. 2012 IECC Update214 Handout page 19

215 R405.6.1 Minimum capabilities REVISED Item 2The calculation of the whole- building sizing for the heating and cooling equipment in the standard reference design residence will be in accordance with Section R403.6. 2012 IECC Update215 Handout page 19

216 Chapter 4: Residential Energy Efficiency 12.What are R-values for Climate Zones 2 and 3 for the ceiling? R-30 to R-38. 2012 IECC Update216 Handout page 22

217 Chapter 4: Residential Energy Efficiency 13.Explain conditioned space and how it affects residential and commercial buildings? 2012 IECC Update217 Conditioned space is 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. For residential buildings access doors from conditioned spaces to unconditioned spaces shall be weatherstripped and insulated to a level equivalent to the insulation on the surrounding surfaces (see Section R402.2.4). All sunrooms enclosing conditioned space shall meet the fenestration requirements of this code unless they meet exceptions (see Section R402.3.5). For commercial buildings the floor (see Section C402.2.5), duct and plenum insulation and sealing (see Section C403.2.7) are affected if the space is not conditioned. Handout page 22

218 Chapter 4: Residential Energy Efficiency 14.Explain the differences between service hot water systems and circulating hot water systems. 2012 IECC Update218 Handout page 22 Service water-heating is the supply of hot water for purposes other than comfort heating. Circulating hot water system is when the distribution piping is heated to maintain usage temperatures using pipe heating cable, the system pump or heat trace cable that has automatic or manual switches or controls that can be set to optimize system operation or turn off the system during periods of reduced demand.

219 Chapter 4: Residential Energy Efficiency 15.What is the SHGC for windows in Climate Zone 4? 40 2012 IECC Update219 Handout page 22

220 Chapter 4: Residential Energy Efficiency 16.Explain Section R405.6.1, Minimum capabilities 2012 IECC Update220 Handout page 22 Section R405.6.1 Minimum capabilities. Calculation procedures used to comply with this section shall be software tools capable of calculating the annual energy consumption of all building elements that differ between the standard reference design and the proposed design.

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229 229 Question and Answer Segment Call (1-877-209-1336) with your questions

230 230 International Code Council is a Registered Provider with The American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-AIA members are available on request. This program is registered with the 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.

231 231 Copyright Materials This presentation is protected by US and International Copyright laws. Reproduction, distribution, display and use of the presentation without written permission of the speaker is prohibited. © International Code Council 2006

232 Thank you for participating To schedule a seminar, contact: Annie Martinez at 1-888-ICC-SAFE (422-7233) Ext. 33818 or E-mail amartinez@iccsafe.orgamartinez@iccsafe.org 2012 Template232


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