WASHINGTON STATE ENERGY CODE, RESIDENTIAL …

1 Chapter 51-11R WAC. STATE building CODE ADOPTION AND AMENDMENT OF. THE 2015 EDITION OF THE. INTERNATIONAL ENERGY CONSERVATION CODE, RESIDENTIAL PROVISIONS. WASHINGTON STATE ENERGY CODE, RESIDENTIAL PROVISIONS. TABLE OF CONTENTS. Chapter 1 Scope and Chapter 4 RESIDENTIAL ENERGY Administration .. RE-3. Efficiency .. RE-17. R101 Scope and General RE-3 R401 General .. RE-17. R102 Alternate Materials Method of R402 building Envelope .. RE-17. Construction, Design or TABLE Insulation and Fenestration Insulating Systems .. RE-3 Requirements by Component .. RE-18. R103 Construction Documents .. RE-3 TABLE Equivalent U-factors .. RE-19. TABLE Air Barrier and Insulation R104 Inspections .. RE-4. Installation .. RE-23. R105 Validity .. RE-5. R403 Systems .. RE-25. R106 Referenced Standards .. RE-5. TABLE Mechanical Ventilation System R107 Fees .. RE-5 Fan Efficacy .. RE-27. R108 Stop Work RE-6 R404 Electrical Power and R109 Board of Appeals.

2 RE-6 Lighting Systems .. RE-28. R110 Violations .. RE-6 R405 Simulated Performance R111 Liability .. RE-6 Alternative .. RE-28. TABLE (1) Specifications for the Chapter 2 Definitions .. RE-7 Standard Reference and Proposed Designs .. RE-30. R201 General .. RE-7 TABLE (2) Default Distribution R202 General Definitions .. RE-7 System Efficiencies for Proposed Design .. RE-32. Chapter 3 General Requirements .. RE-11 R406 Additional ENERGY Efficiency R301 Climate Zones .. RE-11 Requirements .. RE-34. TABLE Climate Zones .. RE-11 TABLE ENERGY Credits .. RE-30. R302 Design Conditions .. RE-11. R303 Materials, Systems Chapter 5 Existing Buildings .. RE-39. and Equipment .. RE-11 R501 General .. RE-39. TABLE (1) Default Glazed R502 Additions .. RE-39. Fenestration U-factors .. RE-12 R503 Alterations .. RE-40. TABLE (2) Default Door R504 Repairs .. RE-41. U-factors .. RE-13. R505 Change of Occupancy or Use .. RE-41. TABLE (3) Default Glazed Fenestration SHGC & VT.

3 RE-13. Chapter 6 Referenced Standards .. RE-43. TABLE (4) Default U-factors for Skylights .. RE-14 Appendix C Exterior Design TABLE (5) Small Business Conditions .. RE-47. Compliance Table .. RE-15. 2015 WASHINGTON STATE ENERGY Code RE-1. Margin Markings Indicates where a section has been deleted from the requirements of the 2012 IECC. > Indicates 2015 IECC language deleted by WASHINGTON STATE amendment Indicates a change from the requirements of the 2012 IECC. in the model code . Indicates a WASHINGTON STATE amendment to the 2015 IECC.. Indicates a change from the 2012 WASHINGTON STATE amendment * Indicates that text or table has been relocated within the code ** Indicates the text or table immediately following has been relocated there from elsewhere in the code. 2nd Printing May 12, 2016. RE-2 2015 WASHINGTON STATE ENERGY Code CHAPTER 1 [RE]. SCOPE AND ADMINISTRATION. SECTION R101 provided that any such alternative has been approved.

4 The SCOPE AND GENERAL REQUIREMENTS code official shall be permitted to approve an alternate material, design or method of construction where the code Title. This code shall be known as the official finds that the proposed design is satisfactory and WASHINGTON STATE ENERGY Code, and shall be cited as such. complies with the intent of the provisions of this code, and It is referred to herein as "this code.". that the material, method or work offered is, for the Scope. This code applies to RESIDENTIAL buildings purpose intended, at least the equivalent of that prescribed and the buildings sites and associated systems and in this code. equipment. This code shall be the maximum and minimum ENERGY code for RESIDENTIAL construction in each town, city and county. SECTION R103. CONSTRUCTION DOCUMENTS. Intent. This code shall regulate the design and construction of buildings for the effective use and General. Construction documents, technical conservation of ENERGY over the useful life of each reports, and other supporting data shall be submitted in building .

5 This code is intended to provide flexibility to one or more sets with each application for a permit . The permit the use of innovative approaches and techniques to construction documents and technical reports shall be achieve this objective. This code is not intended to prepared by a registered design professional where abridge safety, health or environmental requirements required by the statutes of the jurisdiction in which the contained in other applicable codes or ordinances. project is to be constructed. Where special conditions exist, the code official is authorized to require necessary Applicability. Where, in any specific case, construction documents to be prepared by a registered different sections of this code specify different materials, design professional. methods of construction or other requirements, the most restrictive shall govern. Where there is a conflict between Exception: The code official is authorized to waive the a general requirement and a specific requirement, the requirements for construction documents or other specific requirement shall govern.

6 Supporting data if the code official determines they are * not necessary to confirm compliance with this code. Mixed occupancy. Where a building includes both RESIDENTIAL and commercial occupancies, Information on construction documents. each occupancy shall be separately considered and meet Construction documents shall be drawn to scale upon the applicable provisions of the WSEC - Commercial suitable material. Electronic media documents are and RESIDENTIAL Provisions. permitted to be submitted when approved by the code official. Construction documents shall be of sufficient Compliance. RESIDENTIAL buildings shall meet the clarity to indicate the location, nature and extent of the provisions of WSEC - RESIDENTIAL Provisions. work proposed, and show in sufficient detail pertinent Commercial buildings shall meet the provisions of data and features of the building , systems and equipment WSEC - Commercial Provisions.

7 As herein governed. Details shall include, but are not Compliance materials. The code official limited to, the following as applicable: shall be permitted to approve specific computer 1. Insulation materials and their R-values. software, worksheets, compliance manuals and other 2. Fenestration U-factors and SHGCs. similar materials that meet the intent of this code. 3. Area-weighted U-factor and SHGC calculations. 4. Mechanical system design criteria. 5. Mechanical and service water heating system and SECTION R102. equipment types, sizes and efficiencies. APPLICABILITY DUTIES AND POWERS. 6. Equipment and systems controls OF THE CODE OFFICIAL. 7. Duct sealing, duct and pipe insulation and location. Alternate materials, design and methods of 8. Air sealing details. construction and equipment. The provisions of this building thermal envelope depiction. The code are not intended to prevent the installation of any building 's thermal envelope shall be represented on the material or to prohibit any design or method of construction documents.

8 Construction not specifically prescribed by this code, 2015 WASHINGTON STATE ENERGY Code RE-3. SECTION R104. Examination of documents. The code official INSPECTIONS. shall examine or cause to be examined the accompanying construction documents and shall ascertain whether the General. Construction or work for which a permit construction indicated and described is in accordance with is required shall be subject to inspection by the code the requirements of this code and other pertinent laws or official or his or her designated agent, and such ordinances. The code official is authorized to utilize a construction or work shall remain accessible and exposed registered design professional or other approved entity not for inspection purposes until approved. It shall be the duty affiliated with the building design or construction in of the permit applicant to cause the work to remain conducting the review of the plans and specifications for accessible and exposed for inspection purposes.

9 Neither compliance with the code. the code official nor the jurisdiction shall be liable for expense entailed in the removal or replacement of any Approval of construction documents. material, product, system or building component required When the code official issues a permit where to allow inspection to validate compliance with this code. construction documents are required, the construction documents shall be endorsed in writing and stamped Required inspections. The code official or his or "Reviewed for Code Compliance." Such approved her designated agent, upon notification, shall make the construction documents shall not be changed, modified inspections set forth in Sections through or altered without authorization from the code official. Work shall be done in accordance with the approved Footing and foundation inspection. construction documents. Inspections associated with footings and foundations One set of construction documents so reviewed shall shall verify compliance with the code as to R-value, be retained by the code official.

10 The other set shall be location, thickness, depth of burial and protection of returned to the applicant, kept at the site of work and insulation as required by the code and approved plans shall be open to inspection by the code official or a duly and specifications. authorized representative. Framing and rough-in inspection. Previous approvals. This code shall not Inspections at framing and rough-in shall be made require changes in the construction documents, before application of interior finish and shall verify construction or designated occupancy of a structure for compliance with the code as to types of insulation and which a lawful permit has been heretofore issued or corresponding R-values and their correct location and otherwise lawfully authorized, and the construction of proper installation; fenestration properties (U-factor which has been pursued in good faith within 180 days and SHCG) and proper installation; and air leakage after the effective date of this code and has not been controls as required by the code and approved plans and abandoned.