510-RICR-00-00-8. RISBC-8 Rhode Island Energy Conservation Code (version Amendment, 07/01/2010 to 07/01/2013)

RHODE ISLAND STATE BUILDING CODE SBC-8 State Energy Conservation Code Effective July 1, 2010 Replaces Regulation SBC-8 Dated January 1, 2007 STATE OF RHODE ISLAND AND PROVIDENCE PLANTATIONS Department of Administration BUILDING CODE STANDARDS COMMITTEE One Capitol Hill Providence, Rhode Island 02908-5859 (401) 222-3033 FAX No. (401) 222-2599 www.ribcc@ri.gov 11th EDITION RISBC-8 RISBC-8 Regulation SBC-8 State Energy Conservation Code July 1, 2010 The Building Code Standards Committee, in accordance with the rule making authority of Title 23, Chapter 23-27.3, Section 109.1, paragraphs a through c inclusive, has formally adopted and promulgated as the Rhode Island State Building Code, the provisions of the International Energy Conservation Code, 2009 edition, as published by the International Code Council, Inc. (I.C.C.), together with amendments thereto hereinafter set forth to the articles and sections of this code: The provisions of Title 23, Chapter 27.3 of the General Laws of Rhode Island establishing administration and enforcement are hereby incorporated by reference. Regulatory Administration Chapter 1 immediately follows and is supplemental to the General Laws. Editorial Note: Code users please note: When purchasing or using the State Energy Conservation Code 2010 code, please take note of the particular printing edition. Errata to that printing edition is available on-line directly at no charge at www.iccsafe.org/cs/codes/pages/errata.aspx or call the office of the State Building Code Commissioner at 401-222-1129 for further information. Printed copies of the administrative and enforcement provisions of Title 23, Chapter 27.3 are available at the Office of the State Building Code Commission or on-line at http://www.rilin.state.ri.us/Statutes/TITLE23/23-27.3/INDEX.HTM. The State Energy Conservation Code, 2009 Edition, is protected by the copyright that has been issued to the ICC. As a result, the State Building Code is not available in complete form to the public in an electronic format. The State Energy Conservation Code 2010 edition that is referred to within is contained in a printed volume and is also in an electronic format that have been published by the ICC under an exclusive license. The Office of the State Building Code Commissioner has purchased volumes of these codes and they shall be distributed to Rhode Island cities and towns during the month of June 2010 so that local officials will have access to the code prior to the implementation of these rules on July 1, 2010. In order to assure public access to this code the Office of the State Building Code Commissioner shall provide a copy of this code to the Rhode Island State Library, which is located on the second floor of the State House. In addition, all codes may be viewed during business hours at the Department of Administration’s Library which is located on the fourth floor of the William E. Powers Building, One Capitol Hill, Providence. The Legislative Regulation Committee approved adoption of this code on March 4, 2010. By: John P. Leyden Executive Secretary Rhode Island Building Code Standards Committee i RISBC-8 STATE OF RHODE ISLAND BUILDING CODE STANDARDS COMMITTEE CHAIRMAN VICE CHAIRMAN Robert M. Stillings Architect Bruce Davey, PE Structural Engineer EXECUTIVE COMMITTEE John Pagliaro Building Official William J. Nash, Jr. Building Official Bernard J. Bernard, III Electrical Inspector Doris Aschman Public Health Official William Howe Fire Official Alan Durand Builders Trades Council Stephen C. Turner, PE Public Member Russell Brown Building Official Dana Newbrook Architect James R. Carlson, RA Public Member Michael A. Newman Master Plumber G. Thomas Chabot Electrical Contractor David F. Palmisciano Building Trades Council Randy Collins, Jr., RLA Landscape Architect Gordon W. Preiss, PE Mechanical Engineer Robert E. DeBlois, Jr. Builder Barrie K. Balemian Builder Paul DePace, PE Representative for the Disabled Vacant Representative for the Disabled James Fink Electrical Engineer John P. Leyden, CBO State Building Commissioner Executive Secretary Donald Gagnon Minimum Housing Inspector Thomas Coffey Legal Counsel ii RISBC-8 STATE BUILDING CODE REGULATIONS – 2010 The following list includes all regulations promulgated by the State Building Code Standards Committee. All regulations are available for a fee at the State Building Commission. 1. Building Code SBC-1-2010 2. One and Two Family Dwelling Code SBC-2-2010 3. Plumbing Code SBC-3-2010 4. Mechanical Code SBC-4-2010 5. Electrical Code SBC-5-2009 6. Property Maintenance Code SBC-6-2010 7. Reserved 8. Energy Conservation Code SBC-8-2010 9 Enforcement and Implementation Procedures for Projects Under the Jurisdiction of The State of Rhode Island SBC-9 10. Code Interpretations SBC-10 11. Certification of Building Officials, Building, Electrical, Plumbing and Mechanical Inspectors SBC-11-2010 12. New Materials and Methods of Construction SBC-12 13. State Building Code for Existing Schools SBC-13 14. Reserved 15. Reserved 16. Reserved 17. Public Buildings Accessibility Meeting Standards SBC-17 18. Native Lumber SBC-18 19. Fuel Gas Code SBC-19-2010 iii Format: These code changes follow numbering sequence and topics of the INTERNATIONAL ENERGY CONSERVATION CODE 2009 (first printing). All Provisions of IECC 2009 are retained unless indicated as deleted or revised. Published errata are available from the ICC website dependent on the printing issue number and date. Chapter 1 ADMINISTRATION Revise IECC section 101.1, Title, to read as follows: 101.1 Title: These regulations shall be known as the State Energy Conservation Code Regulation SBC-8 - 2010 hereafter referred to as "this code”. Add the following new section 101.1.1 referenced codes. 101.1.1 Referenced Codes. The other codes listed in Sections 101.4.1 through 101.4.7 and referenced elsewhere in this code shall be considered part of the requirements of this code to the prescribed extent of each such reference. 1. Electrical. The provisions of Rhode Island State Electrical Code SBC-5-2008 shall apply wherever referenced in this code as the ICC Electrical Code, and shall apply to the installation of electrical systems, including alterations, repairs, replacement, equipment, appliances, fixtures, fittings, and appurtenances thereto. 2. Gas. The provisions of the Rhode Island State Fuel Gas Code SBC-19-2010 shall apply wherever referenced in this code as the International Fuel Gas Code, and shall apply to the installation of gas piping from the point of delivery, gas appliances and related accessories as covered in this code. These requirements apply to gas piping systems extending from the point of delivery to the inlet connections of appliances and the installation and operation of residential and commercial gas appliances and related accessories. 3. Mechanical. The provisions of the Rhode Island State Mechanical Code SBC-4-2010 shall apply wherever referenced in this code as the International Mechanical Code and shall apply to the installation, alterations, repairs and replacement of the mechanical systems, including equipment, appliances, fixtures, fittings and/or appurtenances, including ventilating, heating, cooling, air-conditioning and refrigeration systems, incinerators and other energy-related systems. RI-SBC-8 4. Plumbing. The provisions of Rhode Island State Plumbing Code SBC-3-2010 shall apply wherever referenced in this code as the International Plumbing Code, and shall apply to the installation, alteration, repair and replacement of plumbing systems, including equipment, appliances, fixtures, fittings and appurtenances, and where connected to a water or sewage system and all aspects of a medical gas system. 5. Property Maintenance. The provisions of the Rhode Island State Property Maintenance Code SBC-6-2010 Provides requirements for continued use and maintenance buildings and property, and of related plumbing, mechanical, electrical and fire protection systems in existing residential nonresidential structures. 6. Fire Prevention Code. Wherever and whenever provisions of the Internatinal Fire Code 2009 editions are referenced, the appropriate Rhode Island Fire Safety Code requirements shall apply. 7. Building Code. The provisions of the Rhode Island State Building Code SBC-1-2010 shall apply wherever referenced in this code as the International Building Code, and shall apply to all matters governing the design and construction of buildings. 8. Existing Building Code. The provisions of the State Building Codes SBC-1-2010 in conjunction with the State Rehabilitation Code SRC-1 and the Rhode Island Fire Safety Code shall apply wherever referenced in this code as the International Existing Building Code. Any and all such references to the various International Code Council family of code shall be substituted for the appropriate state code as indicated above. RI-SBC-8 Chapter 3 Climate Zones Delete section 301 in its entirety and substitute the following. Section 301 Climate Zones 301.1 General Rhode Island shall be considered as climate zone 5A with the following design conditions. Table 301.1 Delete and substitute the following: Table 301.1 Exterior Design Conditions. Value Value Climate zone Providence County All others Winter, design dry-bulb (degree F) 0 5 Summer, design dry-bulb 87 89 Summer design wet-bulb 71 73 Degree days heating 6831 5950 Degree days cooling 371 811 RI-SBC-8 Add the Following Figure 301 RI-SBC-8 Delete without substitution section 301.2 and 301.3 Delete table 301.3(2) and substitute the following TABLE 301.3(2) RHODE ISLAND CLIMATE ZONE DEFINITION THERMAL CRITERIA Zone Number IP UNITS SI UNITS 5 5400 ,HDD650F≤ 7200 3000 < HDD180C ≤ 4000 RI-SBC-8 Chapter 4 401.2 Add the following: 401.2 Compliance. Projects shall comply with Sections 401, 402.4, 402.5, and 403.1, 403.2.2, and 403.3 through 403.9 (referred to as the mandatory provisions) and either: 1. Sections 402.1 through 402.3, 403.2.1 and 404.1 (pre-scriptive): or 2. Section 405 (performance) or 1. Compliance submission of Res-Check for Zone 5 and Chapter 4 mandatory requirements. 401.3 Certificate: Add the following A certificate similar to this shall be attached to or near the electrical panel board. ENERGY CERTIFICATE STREET ADDRESS: _____________________________________________ CITY/TOWN: _____________________________________________ PREDOMINANT VALUES: R VALUE CEILING/ROOF _____________ R VALUE WALLS _____________ R VALUE FOUNDATION _____________ R VALUE DUCTS Outside conditioned space _____________ U FACTOR FENESTRATION _____________ SHGC Fenestration _____________ Gas Fired un-vented room heater _____________ ___________ Yes No Baseboard Electric heater _____________ ___________ Yes No Electric Furnace _____________ ___________ Yes No U FACTOR SKYLIGHT SHGC skylight _____________ Efficiency and type of heating equipment _____________ Efficiency and type of cooling equipment _____________ Efficiency and type of service water heater _____________ CERTIFICATE COMPLETED BY BUILDER/REGISTERED DESIGN PROFESSIONAL ___________________________________ SIGNATURE RI-SBC-8 Table 402.1.1 delete and substitute the following TABLE 402.1.1 INSULATION AND FENESTRATION REQUIRMENTS BY COMPONENTa CLIMATE ZONE FERNESTRAT ION U-FACTORb SKYLIGHTb U-FACTOR GLAZED FERNESTRAT ION SHGCb CEILING R-VALUE WOOD FRAME WALL R-VALUEg MASS WALL R-VALUE FLOOR R-VALUE BASEMENTC WALL R- VALUE SLABd R-VALUE & DEBTTH CRAWL SPACEC WALL R-VALUE 5 0.35 0.60 NR 38 20 or 13+5f 13/17 30e 10/13 10.2 ft 10/13 For SI: 1 foot = 304.8 mm. a. R-values are minimums U-factors and SHGC are maximums. R-19 batts compressed into a nominal 2 × 6 framing cavity such that the R- value is reduced by R-1 or more shall be marked with the compressed batt R-value in addition to the full thickness R-value. b. The fenestration U-factor column excludes skylights. The SHGC column applies to all glazed fenestration. c. “10/13” means R-10 continuous insulated sheathing on the interior or exterior of the homeor R-13 cavity insulation at the interior of the basement wall. d. R-5 shall be added to the required slab edge R-values for heated slabs e. Or insulation sufficient to fill the framing cavity, R-19 minimum. f. “13+5” means R-13 cavity insulation plus R-5 insulated sheathing. If structural sheathing covers 25 percent or less of the exterior, insulating sheathing is not required where structural sheathing is used. If structural sheathing covers more than 25 percent of exterior, structural sheathing shall be supplemented with insulated sheathing of at least R-2. g. The second R-value applies when more than half the insulation is on the interior of the mass wall. Delete in its entirely table 402.1.3 and substitute the following TABLE 402.1.3 EQUIVALENT U-FACTORSa CLIMATE ZONE FENESTRATION U-FACTOR SKYLIGHT U-FACTOR CEILING U- FACTOR FRAME WALL U- FACTOR MASS WALL U- FACTORb FLOOR U- FACTOR BASEMENT WALL U- FACTORc CRAWL SPACE WALL U- FACTORc 5 0.35 0.60 0.030 0.057 .060 0.082 0.033 0.059 0.065 a. Nonfenestration U-factors shall be obtained from measurement, calculation or an approved source. b. When more than half the insulation is on the interior, the mass wall U-factors shall be a and the same as the frame wall U-factor c. Foundation U-factor requirements shown in Table 402.1.3 include wall construction and interior air films but exclude soil conductivity and exterior air films. U-factors for determining code compliance in accordance with Section 402.1.4 (total U Alternative) of Section 405 (Simulated Performance Alternative) shall be modified to include soil conductivity and exterior air films. 402.1.4 Total UA alternative Delete and substitute RI-SBC-8 402.1.4 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 402.1.3 (multiplied by the same assembly area as in the proposed building), the building shall be considered in compliance with Table 402.1.1. The UA calculation shall include the thermal bridge effects of framing materials. The UA calculation shall include the thermal bridging effects of framing materials. The SHGC requirements shall be met in addition to UA compliance. Add the following section: 403.10 Minimum equipment performance. Heating and cooling equipment shall have minimum equipment performance as indicated in Table 403.1. RI-SBC-8 TABLE 403.1 MINIMUM EQUIPMENT PERFORMANCE EQUIPMENT CATEGORY SUBCATEGORY REFERENCED STANDARD MINIMUM PERFORMANCE Maximum Electricity Ratio Natural Gas and propane fired furnaces DOE 10CFR Part 430 Subpart B Appendix N AFUE 90%b 2% Oil Fired Furnace <94,00 BTU/hr DOE 10CFR Part 430 Subpart B Appendix N AFU 83%b 2% Oil Fired Furnace >94,000 BTU/hr DOE 10CFR Part 430 Subpart B Appendix N AFU 83%b 2.3% Natural Gas, Oil and Propane Fired Steam Boilers DOE 10CFR Part 430 Subpart B Appendix N AFU 82%b,c NA Air-cooled heat pumps, Heating mode<65,000 Btu/h cooling capacity Split systems Single package ARI 210/240 8 HSPFa,b 7.6 HSPFa,b Air-cooled air conditioners and heat pumps, Cooling mode <65,000 Btu/h cooling capacity Split systems Single package ARI 210/240 13.0 SEERb 12.0 SEERb For SI: 1 British thermal unit per hour = 0.2931 W. a. For multi-capacity equipment, the minimum performance shall apply to each capacity step provided. Multi-capacity refers to manufacturer-published ratings for more than one capacity mode allowed by the product’s controls. b. This is used to be consistent with the National Appliance Energy Conservation Act (NAECA) of 1987 (Public Law 100-12). Except for gas-fired steam boilers for which the minimum AFUE shall be 75 percent Delete and substitute footnote e and f in table 405.5.2(1) e. Tested envelope leakage shall be determined and documented by an independent party approved by the code official. Hourly calculations shall be used to determine the energy loads resulting from infiltration. f. The combined air exchange rate for infiltration and mechanical ventilation shall be determined for intermittent mechanical ventilation. RI-SBC-8 RI-SBC-8 Chapter 5 501.2 Delete exception in its entirety Table 502.1.2 delete and substitute TABLE 502.1.2 BUILDING ENVELOPE REQUIREMENTS OPAQUE ELEMENT, MAXIMUM U-FACTORS CLIMATE ZONE 5 All other Group R Roofs Insulation entirely above deck U-0.048 U-04.048 Metal buildings U-0.055 U-0.055 Attic and other U-0.027 U-00027 Walls, Above Grade Mass U-0.90 U-0.80 Metal building U-0.069 U-0.069 Metal framed U-0.064 U-0.064 Wood framed and other U-0.064 U-0.051 Walls, Below Grade Below-grade walla C-0.119 C-0.119 Floors Mass U-0.074 U-0.064 Joist/Framing U-0.033 U-0.033 Slab-on Grade Floors Unheated slabs F-0.730 F-0.540 Heated slabs F-0.860 F0.860 a. When heated slabs are placed below-grade, below grade walls must meet the F-factor requirements for perimeter insulation according to the heated slab-on-grade construction. Table 502.2 (1) Delete and substitute TABLE 502.2(1) BUILDING ENVELOPE REQUIREMENTS – OPAQUE ASSEMLIES CLIMATE ZONE 5 ALL OTHERS GROUP R Roofs Insulation entirely Above deck R-20ci R-20ci Metal buildings (with R-5 thermal blocksa,b) R-13 + R-13 R-19 Attic and other R-38 R-38 Walls, Above Grade Mass R-11.4ci R-13.3 ci Metal buildingb R-13 + R-5.6ci R-13 + R-5.6ci Metal framed R-13 + R-7.5ci R-13 + R-7.5ci Wood framed and other R-13 + R-3.8ci R-13 + 3.8 Walls, Below Grade Below grade wallc R-7.5ci R-7.5ci Floors Mass R-10ci R-12.5ci Joist/framing Steel/(wood) R-30 R-30 Slab-on-Grade Floors Unheated Slabs R-3 thermal break at wall to floor joint R-7.5 for 24 inches below R-10 for 24 in. below Heated slabs R-15 for 24 in. below R-15 for 24 in. below Opaque doors Swinging U –0.70 U –0.70 Roll-up or sliding U -0.50 U -0.50 For SI: 1 inch = 25.4mm. Ci = Continuous insulation. NR = No requirement. a. When using R-value compliance method, a thermal spacer block is required, otherwise use the U-factor compliance method. [see Tables 502.1.2 and 502.2(2)]. b. Assembly descriptions can be found in Table 502.2(2). c. When heated slabs are placed below grade, below-grade walls must meet the exterior insulation requirements for perimeter insulation according to the heated slab-on-grade construction. RI-SBC-8 Table 502.3 delete and substitute TABLE 502.3 BUILDING ENVELOPE REQUIREMENTS: FENESTRATION CLIMATE ZONE 5 Vertical fenestration (40% maximum of above-grade wall) U-factor Framing materials other than metal with or without metal reinforcement or cladding U-factor 0.35 Metal framing with or without thermal break Curtin wall/storefront U-factor 0.45 Entrance door U-factor 0.80 All other U-factora 0.55 SHGC-all frame types SHGC:PF < 0.25 0.40 SHGC: 0.25 ≤ PF < 0.5 NR SHGC: PF ≥ 0.5 NR Skylights (3% maximum) U-factor 0.60 SHGC 0.40 NR = No requirements. PF = Projection factor (see Section 502.3.2). a. All others includes operable windows, fixed windows and nonetrance doors. 502.4.4 Relocate to section 503.4.7 502.4.9 Air Barrier Add the following: 502.4.9.1 Air Barriers: The Building envelope shall be designed and constructed with a continuous air barrier to control air leakage into, and out of the conditioned space and space designed to maintain temperature or humidity levels which differ from those in the conditioned space by more than 50% of the difference between the conditioned space and design ambient conditions. The air barrier shall have the following characteristics: 1. It shall be continuous, with all joints made air-tight 2. It shall have an air permeability not to exceed 0.004 cfm/ft2 under a pressure differential of 0.3 in. water. 3. It shall be capable of withstanding positive and negative combined design wind, fan and stack pressure on the envelope without damage or displacement and shall be transfer the load to the structure. It shall not displace adjacent materials under full load. 4. The air barrier shall be joined in an air-tight and flexible manner to the air barrier material of adjacent systems, allowing for the relative movement of systems due to thermal and moisture variations and creep. Connections shall be made between: a. Foundation and walls. b. Walls and windows or doors. c. Different wall systems d. Wall and roof. RI-SBC-8 e. Wall and roof over unconditioned space. f. Walls, floor and roof across construction, control and expansion joints. g. Walls, floors and roof to utility, pipe and duct penetrations. Air barrier penetrations: All penetrations of the air barrier and paths of air 502.4.9.2 infiltration/exfiltration shall be made air-tight. 503.2.1 Delete and Substitute 503.2.1 Calculation of heating and cooling loads. Design loads shall be determined in accordance with the procedures described in the ASHRAE/ACCA Standard 183. Heating and cooling loads shall be adjusted to account for load reductions that are achieved when energy recovery systems are utilized in the HVAC system Alternatively, design loads shall be determined by an approved equivalent computation procedure, using the design parameters specified in Chapter 3. 503.2.4.4 Delete and substitute the following exceptions. 1. Gravity exhaust dampers shall be permitted in buildings less than three stories in height. 2. Gravity dampers shall be permitted for exhaust airflows of 300 CFM (.14 m3/s) when serving a single space. 503.2.4.5 Delete and substitute 503.2.4.5 Snow melt system controls. Snow and ice-melting system are allowed only when there is no increase in supplied energy consumption, Snow- and ice- melting systems, supplied through energy service to the building, shall include automatic controls capable of shutting off the system when the pavement temperature is above 50°F (10°C) and no precipitation is falling and an automatic or manual control that will allow shutoff when the outdoor temperature is above 40°F (4°C) so that the potential for snow or ice accumulation is negligible. 503.2.7 Delete and substitute 503.2.7 Duct and plenum insulation and sealing. All supply and return air ducts and plenums shall be insulated with a minimum of R-8 insulation when located in unconditioned spaces and a minimum of R-12 insulation when located outside the building. When located within a building envelope assembly, the duct or plenum shall be separated from the building exterior or unconditioned or exempt spaces by a minimum of R-8 insulation. Exceptions: 1. When located within equipment. 2. When the design temperature difference between the interior and exterior of the duct or plenum does not exceed 15°F (8°C). RI-SBC-8 503.2.9 Delete and substitute the following 503.2.9 HVAC System completion. Prior to the issuance of a certificate of occupancy upon the request of the AHJ evidence of system completion in accordance with sections 503.2.9.1 through 503.2.9.3 shall be provided. Delete Table 503.3.1(1) and substitute the following table: Table 503.3.1(1) Climate Zone 5-A Economizers on all individual cooling units > 54,000 Btu/h 503.4.7 Add the following section moved from section 502.4.4 503.4.7 Hot gas by pass limitation. Cooling systems shall not use hot gas bypass or other evaporator pressure control systems unless the system is designed with multiple steps of unloading or continuous capacity modulation. The capacity of the hot gas bypass shall be limited as indicated in Table 503.4.7. Exception: Unitary packaged systems with cooling capacities not greater than 90,000 Btu/h (26 379 W). TABLE 503.4.7 MAXIMUM HOT GAS BYPASS CAPACITY RATED CAPACITY MAXIMUM HOT GAS BYPASS CAPACITY (% of total capacity) ≤ 240,000 Btu/h 50% > 240,000 Btu/h 25% For SI: 1 Btu/h = 0.29 watts. 506 Delete in its entirety RI-SBC-8 RI-SBC-8 Chapter 6 Reference Standards Delete without substitute ASHRE – 2005 ASHRE Handbook of Fundamentals ASHRE – 2004 ASHRE HVAC Systems and Equipment Hand Book – 2004.