1 2009 iecc training - residential provisions © energy systems laboratory, tees, texas a&m...

1 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 2009 IECC TRAINING Residential Provisions Energy Systems Laboratory

2 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 2009 IECC TRAINING Presented by: Energy Systems Laboratory (ESL) Texas A&M University Assists municipalities and counties determine the relative impacts of local amendments to the code Report the status and effect of energy & emissions as impacted by local codes Provides energy code training

3 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 1)Introductions 2)Legislative Background Information 3)SECO Rule Making 4)Regional Efforts 5)Chapters 1 to 4, 2009 IECC 6)International Code Compliance Calculator IC3 7)Demonstration of IC3 2009 IECC TRAINING Agenda

4 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 1)Me - Ed Dryden 12 Years HVAC Industry Experience 25 years experience in municipal code enforcement Certified Building Official & other ICC Certifications IAS Committee Member for 3 Years Member of North Central Texas Council of Governments Building & Energy Code Advisory Board Current Building Official, City in North Texas Instruct energy code workshops for ESL for 4 years 2) You.. Introductions

5 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System American Recovery and Reinvestment Act General Requirements of ARRA Target Benchmarks: 2009 IECC for Residential ASHRAE 90.1-2007 for Commercial 90% compliance: Model Energy Codes (state-developed) exceeding 2009 IECC or 90.1- 2007 SB16 is Texas response (adopted 09 IECC effective 2012)

6 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Legislative Background Information In 2001 (SB 5) the legislature made the finding that an effective building energy code is essential to: (1) reducing the air pollutant emissions that are affecting the health of residents of this state; (2) moderating future peak electric power demand; (3) assuring the reliability of the electrical grid; and (4) controlling energy costs for residents and businesses in this state.

7 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Legislative Background Information To accomplish these findings: 1. The energy efficiency chapter of the IRC, (2000/2001 supplement) was adopted as the energy code in this state for single-family residential construction, and 2. The IECC (2000/2001 supplement) was adopted as the energy code in this state for all other residential, commercial, and industrial construction.

8 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Legislative Background Information A City shall establish procedures: (1) for administration and enforcement; and (2) to ensure that code-certified inspectors shall perform energy inspections A City may establish procedures to adopt local amendments to the energy codes, but Local amendments may not result in less stringent energy efficiency requirements in nonattainment areas and in affected counties, and Local amendments must comply with the National Appliance Energy Conservation Act

9 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Texas Non-attainment and Near Non-attainment Areas

10 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Legislative Background Information If the SECO determines, based on written recommendations from the ESL, that the energy efficiency provisions of the latest editions of the IRC or the IECC for residential or commercial energy efficiency and air quality are equivalent to or more stringent than the base codes, SECO may by rule adopt and substitute in the energy code the equivalent or more stringent editions

11 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Legislative Background Information Effective January 1, 2012, the energy efficiency provisions of the International Residential Code as they existed on May 1, 2009, are adopted as the energy code in this state for single-family residential construction Effective April 1, 2011, the International Energy Conservation Code as it existed on May 1, 2009, is adopted as the energy code for use in this state for all residential, commercial, and industrial construction that is not single-family residential NOTE: Single family is defined as 1& 2 family detached dwellings and townhomes in the statute

12 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Legislative Background Information ESL, at the request of a City, shall determine the relative impact of proposed local amendments to an energy code, including whether proposed amendments are substantially equal to or less stringent than the unamended code. For the purpose of establishing uniform requirements throughout a region, and on request of a council of governments, a county, or a municipality, the laboratory may recommend a climatically appropriate modification or a climate zone designation for a county or group of counties that is different from the climate zone designation in the unamended code.

13 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Legislative Background Information North Central Texas Council of Governments has reviewed and provided recommended amendments to the 2009 IECC and the energy provisions of the 2009 IRC Recommended amendments have been reviewed and approved by ESL as not less stringent Available for viewing and download at: http://www.nctcog.org/envir/SEEDevEx/codes/2009amendments.asp

14 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 1 Administrative Provisions 101.2 Scope. This code applies to residential and commercial buildings. 101.3 Intent. This code shall regulate the design and construction of buildings for the effective use of energy. This code is intended to provide flexibility to permit the use of innovative approaches and techniques to achieve the effective use of energy. This code is not intended to abridge safety, health or environmental requirements contained in other applicable codes or ordinances.

15 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 1 Administrative Provisions 101.4 Applicability. Where, in any specific case, different sections of this code specify different materials, methods of construction or other requirements, the most restrictive shall govern. Where there is a conflict between a general requirement and a specific requirement, the specific requirement shall govern. 101.4.1 Existing buildings. Except as specified in this chapter, this code 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 code.

16 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 1 Administrative Provisions NCTCOG Recommended Amendment 101.4.2 Historic Buildings. Any building or structure that is listed in the State or National Register of Historic Places; designated as a historic property under local or state designation law or survey; certified as a contributing resource with a National Register listed or locally designated historic district; or with an opinion or certification that the property is eligible to be listed on the National or State Registers of Historic Places either individually or as a contributing building to a historic district by the State Historic Preservation Officer of the Keeper of the National Register of Historic Places, are exempt from shall comply with all of the provisions of this code. Exception: Whenever a provision or provisions shall invalidate or jeopardize the historical designation or listing, that provision or provisions

17 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 1 Administrative Provisions 101.4.3 Additions, alterations, renovations or repairs. Additions, alterations, renovations or repairs to an existing building, building system or portion thereof shall conform to the provisions of this code as they relate to new construction without requiring the unaltered portion(s) of the existing building or building system to comply with this code. Additions, alterations, renovations or repairs shall not create an unsafe or hazardous condition or overload existing building systems. An addition shall be deemed to comply with this code if the addition alone complies or if the existing building and addition comply with this code as a single building.

18 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 1 Administrative Provisions 101.4.3 Additions, alterations, renovations and repair 4 New Exceptions in 09 IECC 5. Reroofing for roofs where neither the sheathing nor the insulation is exposed. Roofs without insulation in the cavity and where the sheathing or insulation is exposed during reroofing shall be insulated either above or below the sheathing. 6. Replacement of existing doors that separate conditioned space from the exterior shall not require the installation of a vestibule or revolving door, provided, however, that an existing vestibule that separates a conditioned space from the exterior shall not be removed, 7. Alterations that replace less than 50 percent of the luminaires in a space, provided that such alterations do not increase the installed interior lighting power. 8. Alterations that replace only the bulb and ballast within the existing luminaires in a space provided that the alteration does not increase the installed interior lighting power.

19 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 1 Administrative Provisions 101.4.4 Change in occupancy or use. Spaces undergoing a change in occupancy that would result in an increase in demand for either fossil fuel or electrical energy shall comply with this code. Where the use in a space changes from one use in Table 505.5.2 to another use in Table 505.5.2, the installed lighting wattage shall comply with Section 505.5. 101.4.5 Change in space conditioning. Any nonconditioned space that is altered to become conditioned space shall be required to be brought into full compliance with this code. 101.4.6 Mixed occupancy. Where a building includes both residential and commercial occupancies, each occupancy shall be separately considered and meet the applicable provisions of Chapter 4 for residential and Chapter 5 for commercial.

20 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 1 Administrative Provisions 101.5 Compliance. Residential buildings shall meet the provisions of Chapter 4. Commercial buildings shall meet the provisions of Chapter 5. 101.5.1 Compliance materials. The code official shall be permitted to approve specific computer software, worksheets, compliance manuals and other similar materials that meet the intent of this code. 101.5.2 Low energy buildings. The following buildings, or portions thereof, separated from the remainder of the building by building thermal envelope assemblies complying with this code shall be exempt from the building thermal envelope provisions of this code: 1.Those with a peak design rate of energy usage less than 3.4 Btu/h ft2 (10.7 W/m2) or 1.0 watt/ft2 (10.7 W/m2) of floor area for space conditioning purposes. 2.Those that do not contain conditioned space.

21 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 1 Administrative Provisions NCTCOG Recommended Amendment 103.1.1 Alternative compliance. A building certified by a national, state, or local accredited energy efficiency program and determined by the Energy Systems Laboratory to be in compliance with the energy efficiency requirements of this section may, at the option of the Code Official, be considered in compliance. The United States Environmental Protection Agency's Energy Star Program certification of energy code equivalency shall be considered in compliance. Reflects the mandate of Texas HB 1365, 78 th Legislature

22 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 2 Definitions Air 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. Alteration - Any construction or renovation to an existing structure other than repair or addition that requires a permit. Also, a change in a mechanical system that involves an extension, addition or change to the arrangement, type or purpose of the original installation that requires a permit. High-Efficacy Lamps. Compact fluorescent lamps, T-8 or smaller diameter linear fluorescent lamps, or lamps with a minimum efficacy of: 1.60 lumens per watt for lamps over 40 watts, 2.50 lumens per watt for lamps over 15 watts to 40 watts, and 3.40 lumens per watt for lamps 15 watts or less.

23 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 2 Definitions Residential Building - For this code, includes R-3 buildings, as well as R-2 and R-4 buildings three stories or less in height above grade. Roof Assembly - A system designed to provide weather protection and resistance to design loads. The system consists of a roof covering and roof deck or a single component serving as both the roof covering and the roof deck. A roof assembly includes the roof covering, underlayment, roof deck, insulation, vapor retarder and interior finish. Sunroom - A one-story structure attached to a dwelling with a glazing area in excess of 40 percent of the gross area of the structure's exterior walls and roof. Thermal Isolation - Physical and space conditioning separation from conditioned space(s). The conditioned space (s) shall be controlled as separate zones for heating and cooling or conditioned by separate equipment.

24 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 3 Climate Zones

25 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 3 Climate Zones 302.1 Interior design conditions. The interior design temperatures used for heating & cooling load calculations shall be a maximum of 72F for heating and minimum of 75F for cooling. 303.1 Identification. Materials, systems and equipment shall be identified 303.1.1 Building thermal envelope insulation. Insulation marked with an R -value ; or, The insulation installers shall provide a certification listing the type, manufacturer and R -value of insulation installed in each element of the building thermal envelope.

26 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 3 Climate Zones 303.1.1 Building thermal envelope insulation. For blown or sprayed insulation (fiberglass and cellulose): the initial installed thickness, settled thickness, settled R -value, installed density, coverage area, and number of bags For sprayed polyurethane foam (SPF) insulation: the installed thickness of the areas covered, and R- value of installed thickness shall be listed on the certification. The insulation installer shall sign, date and post the certification in a conspicuous location on the job site.

27 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 3 Climate Zones 303.1.1.1 Blown or sprayed roof/ceiling insulation. The thickness of blown-in or sprayed roof/ceiling insulation (fiberglass or cellulose) shall be written in inches on markers that are installed at least one for every 300 square feet throughout the attic space. The markers shall be affixed to the trusses or joists and marked with the minimum initial installed thickness with numbers a minimum of 1 inch in height. Each marker shall face the attic access opening. Spray polyurethane foam thickness and installed R- value shall be listed on certification provided by the insulation installer. 303.1.2 Insulation mark installation. Insulating materials shall be installed such that the manufacturer's R - value mark is readily observable upon inspection.

28 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 3 Climate Zones 303.1.3 Fenestration product rating. U -factors of fenestration products (windows, doors and skylights) shall be determined in accordance with NFRC 100 by an accredited, independent laboratory, and labeled and certified by the manufacturer. Products lacking such a labeled U -factor shall be assigned a default U - factor from Table 303.1.3(1) or 303.1.3(2). The solar heat gain coefficient (SHGC) of glazed fenestration products (windows, glazed doors and skylights) shall be determined in accordance with NFRC 200 by an accredited, independent laboratory, and labeled and certified by the manufacturer. Products lacking such a labeled SHGC shall be assigned a default SHGC from Table 303.1.3(3).

29 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 3 Climate Zones (insert table)

30 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 3 Climate Zones TABLE 303.1.3(3) DEFAULT GLAZED FENESTRATION SHGC (insert table)

31 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 3 Climate Zones (insert table)

32 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 3 Climate Zones NEW in 2009 IECC 303.1.4 Insulation product rating. The thermal resistance (R- value) of insulation shall be determined in accordance with the U.S. Federal Trade Commission R -value rule (CFR Title 16, Part 460, May 31, 2005) in units of h ft2 F/Btu at a mean temperature of 75F (24C).

33 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 4 Residential Provisions CHAPTER 4 RESIDENTIAL ENERGY EFFICIENCY SECTION 401 GENERAL SECTION 402 - BUILDING THERMAL ENVELOPE SECTION 403 SYSTEMS SECTION 404 - ELECTRICAL POWER AND LIGHTING SYSTEMS SECTION 405 - SIMULATED PERFORMANCE ALTERNATIVE (Performance)

34 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 4 Compliance Options 401.1 Scope - This chapter applies to residential buildings. 401.2 Compliance - Must comply with either prescriptive provisions: 402.1 thru 402.3 (Insulation & Fenestration), 403.2.1 (Duct Insulation), and 404 (Lighting) Or: 405 Performance provisions AND.. 8 Mandatory Provisions

35 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 4 Residential Provisions 8 Mandatory Provisions: 401 Compliance statement 402.4 Air leakage Requirements 402.5 Max fenestration U-factor & SHGC (Area weighted averages) 403.1 Mechanical Systems Controls 403.2.2 HVAC Duct Sealing 402.2.3 Building Cavities not used as supply ducts 403.3 thru 403.9 Piping insulation, ventilation, complex systems, snow melt, and swimming pools

36 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 4 401.3 Certificate NEW in 2009 IECC 401.3 Certificate - A permanent certificate Shall be posted on or in the electrical distribution panel Shall be completed by the builder or registered design professional Shall list the predominant R -values of insulation installed in or on ceiling/roof, walls, foundation (slab, basement wall, crawlspace wall and/or floor) and ducts outside conditioned spaces; U -factors for fenestration and the solar heat gain coefficient (SHGC) of fenestration Shall list the types and efficiencies of heating, cooling and service water heating equipment ID "gas-fired unvented room heater," "electric furnace" or "baseboard electric heater," as appropriate An efficiency shall not be listed for gas-fired unvented room heaters, electric furnaces or electric baseboard heaters.

37 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 4 Residential Provisions Prescriptive Component values from: Table 402.1.1 Plus Mandatory Provisions U-Factor and UA Alternatives U-factor 402.1.3 or Total Building UA 402.1.4 Simulated Performance (software) Simulated Performance Alternative 405

38 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 4 Residential Provisions

39 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 4 402.2 Specific insulation requirements (Prescriptive). 402.2.1 Ceilings with attic spaces - Where R38 is required, may be reduced to R30 when raised heel trusses are used. Same trade off if R49 is required - R38 allowed when raised heel trusses are used. 402.2.2 Ceilings without attic spaces - Where insulation levels above R- 30 are required and the design of the roof/ceiling assembly does not allow sufficient space for the required insulation, the minimum required insulation for such roof/ceiling assemblies shall be R-30 but only limited to 500 square feet (46 m2) or 20 percent of the total insulated ceiling area, whichever is less. Neither of these applicable to U-factor alternative approach

40 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 4 Residential Provisions 402.1.2 R- value computation. Insulation material used in layers, such as framing cavity insulation and insulating sheathing, shall be summed to compute the component R -value. The manufacturer's settled R -value shall be used for blown insulation. Computed R -values shall not include an R -value for other building materials or air films. 402.1.3 U -factor alternative. An assembly with a U -factor equal to or less than that specified in Table 402.1.3 shall be permitted as an alternative to the R -value in Table 402.1.1. U -factor alternative shall include the thermal bridging effects of framing materials and the SHGC requirements shall be met in addition to UA compliance.

41 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 4 Residential Provisions

42 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 4 - Residential Provisions 402.1.3 - U-Factors Alternative An assembly (roof, wall, floor) with a U-factor equal to or less than value specified in Table 403.1.3 is permitted as an alternative to the R- value specified in Table 402.1.1 (prescriptive table)

43 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Chapter 4 - Residential Provisions Calculating Assembly U-Factors An area-weighted average U-factor is calculated for the wall system that takes into account the effects of framing and systems An R-value must be determined for each different material in the assembly The R-values are then totaled to determine the total R-value through each thermal path of the assembly The total R-values are then converted to U-factors by taking the reciprocal of the R-value

44 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Sample Calculation - Walls ( U wl x A wl ) + (U w2 x A w2 ) + U ow = A w1 + A w2 + Where U wl = U-factor of opaque wall number 1 A wl = Area of opaque wall number 1 U w2 = U-factor of opaque wall number 2 A w2 = Area of opaque wall number 2

45 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 402.1.4 Total UA Alternative The building envelope design is permitted to deviate from R-values or U-factors in Tables 402.1.1 or 402.1.3, respectively, provided the total thermal transmittance (UA) is the same or less as the very same building envelope geometry designed to code The calculation shall be done using a method consistent with the ASHRAE Handbook of Fundamentals and shall include the thermal bridging effects of framing materials SHGC requirements shall be met

46 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 402.2.3 Access Hatches and Doors Specific insulation requirements (Prescriptive) Access doors from conditioned to unconditioned spaces shall be: Weather-stripped Insulated to the equivalent R-value on the surrounding surfaces A wood framed baffle or retainer is required to be provided when loose fill insulation is installed

47 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 402.2.4 Mass Walls Specific insulation requirements (Prescriptive) For residential purposes above-grade walls are: Concrete block Concrete Insulated concrete form (ICF) Masonry cavity Brick (other than brick veneer) Earth Adobe Compressed earth block Rammed earth Solid timber/logs

48 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 402.2.5 Steel Framing Specific insulation requirements (Prescriptive) Steel framing ceilings, walls and floors shall meet the insulation requirements of Table 402.2.5 or the U-factor requirements in Table 402.1.3 Dietrich Metal Framing

49 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 402.2.6 Floors Specific insulation requirements (Prescriptive) Floor insulation shall be installed to maintain permanent contact with the underside of the subfloor decking

50 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 402.2.7 Basement Walls Specific insulation requirements (Prescriptive) Defined as walls greater than or equal to 50 percent below grade Insulate from the top of the basement wall down 10 feet below grade or to the basement floor, whichever is less

51 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 402.2.8 Slab-on-grade Floors Specific insulation requirements (Prescriptive)

52 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 402.2.9 Crawl Space Walls Specific insulation requirements (Prescriptive) Criteria: Must be insulated to the R-value specified in the energy code May not have ventilation openings that communicate directly with outside air Must be mechanically ventilated or supplied with conditioned air Exposed earth floors must be covered with an approved vapor retarder material, which extends up the stem wall and is sealed and taped to the wall Noels Green Blog

53 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 402.2.11 & 402.3.5 Thermally Isolated Sunroom Specific insulation & fenestration (Prescriptive) Requirements: Separate zones for heating and cooling or conditioned by separate equipment Must maintain thermal isolation Thermal Isolation Physical and space conditioning separation from conditioned spaces Minimum wall R-value shall be R-13 (Section 402.2.11) Minimum ceiling R-value shall be R-19 in zones 1- 4 and R-24 in zones 5-8 (Section 402.2.11) The glass used must have a maximum U-factor of 0.50 inches and skylights U-factor of 0.75 in climate zones 4-8 (Section 402.3.5)

54 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 402.2.11 & 402.3.5 Thermally Isolated Sunroom Specific insulation & fenestration (Prescriptive)

55 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 402.3 Fenestration. (Prescriptive) U-factor and SHGC 402.3.1 U-factor Area weighted average of fenestration products may be used to satisfy the U- factor requirements 402.3.1 U-factor Area weighted average of fenestration products with more than 50 percent glazing may be used to satisfy the SHCG requirements

56 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Glazed fenestration & opaque door exemption 402.3 Fenestration. (Prescriptive) Up to 15 ft 2 of glazed fenestration per dwelling unit can be exempted from U-factor and SHGC requirements One side-hinged opaque door assembly up to 24 square feet shall be exempt from U-factor and SHCG requirements 402.3.6 Replacement fenestration. When an existing fenestration unit is replaced with a new fenestration product, including sash and glazing, the replacement fenestration unit shall meet the applicable requirements for U -factor and SHGC in Table 402.1.1.

57 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Physical Inspection 402.4 Air leakage (Mandatory) 402.4.1 Building thermal envelope Durably sealed to limit infiltration 402.4.2 Air Sealing and Insulation Building envelope air tightness and insulation shall be demonstrated in one of two ways 402.4.2.1 Testing option 402.4.2.2 Visual inspection option Follows Table 402.4.2 and where required by the code official, an approved party independent from the installer of the insulation shall inspect the air barrier and insulation

58 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Testing Option 402.4 Air leakage (Mandatory) Acceptable when tested air leakage is less than seven air changes per hour (ACH) at a pressure of 33.5 psf (50 Pa) There are seven requirements 1. Exterior windows and doors, fireplaces and stove doors closed, but not sealed 2. Dampers shall be closed but not sealed 3. Interior doors open 4. Exterior openings for continuous ventilation systems and heat recovery ventilators closed and sealed 5. Heating and cooling systems turned off 6. HVAC shall not be sealed 7. Supply and return registered shall not be sealed

59 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Blower Door Test 402.4 Air leakage (Mandatory)

60 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 402.4.3 Fireplaces 402.4 Air leakage (Mandatory) New wood-burning fireplaces shall have gasketed doors and outdoor combustion air

61 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Recessed Lighting 402.4 Air leakage (Mandatory) 402.4.5 Recessed lighting. Recessed luminaires shall be sealed to limit air leakage between conditioned and unconditioned spaces. All recessed luminaires shall be IC-rated and labeled as meeting ASTM E 283 when tested at 1.57 psf (75 Pa) pressure differential with no more than 2.0 cfm (0.944 L/s) of air movement from the conditioned space to the ceiling cavity. All recessed luminaires shall be sealed with a gasket or caulk between the housing and the interior wall or ceiling covering.

62 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 402.5 Maximum U-factor and SHCG Area-weighted average max U-factor using trade- offs from 402.1.4 (Total UA) or 405 shall be Zones 4 and 5 is 0.48 Zones 6 8 is 0.40 Skylights Zones 4 8 is 0.75 Area-weighted average max SHGC from Section 405 (Performance) Zones 1 3 is 0.50

63 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System SECTION 403, SYSTEMS Controls 403.1 Controls (Mandatory) - At least one thermostat shall be provided for each separate heating and cooling system. 403.1.1 Programmable thermostat - One thermostat per dwelling unit shall be capable of controlling the heating and cooling system Daily schedule to maintain different temperature set points at different times of the day. Set back or temporarily operate the system to maintain zone temperatures down to 55F or up to 85F The thermostat shall initially be programmed with a heating temperature set point no higher than 70F (21C) and a cooling temperature set point no lower than 78F (26C). 403.1.2 Heat pump supplementary heat (Mandatory) - Heat pumps having supplementary electric-resistance heat shall have controls that, except during defrost, prevent supplemental heat operation when the heat pump compressor can meet the heating load.

64 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 403.2 Ducts Duct Insulation New 09 Requirement 403.2.1 Insulation Supply ducts in attics shall be R-8 min All other ducts shall be R-6 min Exception Ducts located completely inside the building thermal envelope

65 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 403.2 Ducts Duct Sealing New 09 Requirement 403.2.2 Sealing (Mandatory) All ducts, air handlers, filter boxes and building cavities used as ducts shall be sealed in accordance with Section M1601.4.1 IRC Duct tightness shall be verified by testing Post-construction or rough-in The test is not required where the air handler and entire duct system are located within conditioned space.

66 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 403.2.3 Building cavities 403.3 Mechanical system piping insulation 403.2.3 Building cavities (Mandatory). Building framing cavities shall not be used as supply ducts. 403.3 Mechanical system piping insulation (Mandatory). Mechanical system piping capable of carrying fluids above 105F (41C) or below 55F (13C) shall be insulated to a minimum of R-3. (Suction lines)

67 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 403.4 Circulating Hot Water Insulation All hot water piping shall be R-2 min Controls Automatic controls OR Readily accessible manual switch

68 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Sizing and Multiple Dwelling Units 403.6 Equipment Sizing Heating and cooling equipment shall be sized in accordance with IRC Section M1401.3 403.7 Systems serving Multiple Dwelling Units All systems serving multiple dwelling units shall comply with Sections 503 and 504 in lieu of Section 403

69 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 403.8 Snow Melt System Controls Snow and ice-melting equipment controls Automatic controls capable of shutting down the system when The pavement temperature is above 50 o F and no precipitation is falling AND An automatic or manual control that will allow shutoff when the outdoor temperature is above 40 o F Heated Driveway Systems

70 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Section 403.9 Pools Energy conservation requirements are required for pools, including time switches to turn pumps and heaters off and vapor retardant covers.

71 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 403.9.2 Time Switches Time switches to automatically turn off and on heaters and pumps according to a preset schedule shall be installed on swimming pool heaters and pumps. Exceptions Where public health standards require 24 hour operation Where the pumps are required to operate solar-waste-heat recovery heating systems

72 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 403.9.3 Pool Cover Vapor retardant on or at the water surface Required on all heated pools Heated to 90 o F or more Require a minimum R-12 Exception 60% energy for heating from site-recovered or solar energy source

73 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 404.1 Lighting Equipment A minimum of fifty percent of the lamps in permanently installed lighting fixtures shall be high-efficacy lamps.

74 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Break 15 minutes

75 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 405 Simulated Performance Alternative An energy estimation tool is used to compare the energy use of the proposed design with that of the standard design building, may meet or exceed the minimum code requirements.

76 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 405.1 Scope and 405.2 Mandatory Requirements Scope analysis include only Heating, Cooling, and Service water heating Mandatory requirements All 8 provisions of 401.2, and All ducts not inside building envelope insulated to minimum R-6

77 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System 405.4 Documentation 405.4.1 Compliance Software Tools V erifies that methods & accuracy conforms 405.4.2 Compliance Report Documents compliance and includes: Address, inspection checklist, name of person completing report, and name & version of software 405.4.3 Additional Documentation Building component characteristics, certification signed by builder, and actual values used in calcs

78 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Table 405.5.2(1) Table 405.5.2(1) - Specifications for the standard reference and proposed designs Building component Standard reference design Proposed design Footnotes Table 405.5.2(2) Default Distribution System Efficiencies for Proposed Designs

79 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System

81 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Examples of Performance Tools Home Energy Rating Systems (HERS) REMrate DOE 2 Department of Energy Energy Gauge International Code Compliance Calculator

82 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System IC3 International Code Compliance Calculator Developed by ESL w/ cooperative efforts of TCEQ and USEPA Simple straight forward approach, User friendly Web Based Will generate a Certificate that demonstrates compliance Calculates actual emissions Captures above code credits for SIP Free! Free! Free! Free! Free!

83 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System International Code Compliance Calculator User Requirements Need general construction knowledge Need IECC/IRC code knowledge Need to be familiar with Windows based PC approaches & using Internet Need project specific information: Location: county & street address, orientation Floor/wall/ceiling areas/heights/dimensions/shading Window areas, U values & SHGC values Insulation values Mechanical efficiencies & hot water heating efficiencies

84 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System International Code Compliance Calculator Web browser interface inputs data to 2 main frame based software packages One to DOE 2- to calculate code compliance The other to EGRID, electric grid calculation tool Knows what % of electricity comes from different power plants Knows the fuel makeup of the power plants Calculates emissions reductions as compared to code complaint house

85 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System International Code Compliance Calculator Construction Details Perform a take off on the house Information Required: General information: address, county, builder and any notes unique to project Wall(s), floor(s), ceiling(s) area(s) & insulation values (area weighted averages) House orientation Exterior wall and roof construction materials Number of sleeping rooms Roof overhang distances (window shading) Foundation perimeter of thermal envelope Window areas and U-factors and SHGC values

86 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System International Code Compliance Calculator Construction Details (Contd) Information Required (continued): HVAC size and efficiency rating Duct insulation (trade offs allowed from R8 to R6) Location of ducts and equipment (attic or in conditions space) Duct blaster testing results, estimate; door blower testing option Water heater efficiency Radiant barrier used Fuel source (electricity or natural gas)

87 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System International Code Compliance Calculator 87 Lets Get Started!... The first thing you need to do is type http://ic3.tamu.edu in your browser

102 2009 IECC Training - Residential Provisions Energy Systems Laboratory, TEES, Texas A&M University System Q & A Free download of 2009 IECC available at: http://www.iccsafe.org/store/pages/doeregistration.aspx