Chapter 51-11C WAC STATE BUILDING CODE ADOPTION AND AMENDMENT OF THE 2015 EDITION OF THE INTERNATIONAL ENERGY CONSERVATION CODE, COMMERCIAL PROVISIONS WASHINGTON STATE ENERGY CODE, COMMERCIAL PROVISIONS TABLE OF CONTENTS Chapter 1 Scope and Chapter 4 Commercial Energy Administration ........................... CE-3 Efficiency .............................. CE-21 C101 Scope and General C401 General ............................................ CE-21 Requirements ................................. CE-3 C402 Building Envelope Requirements .... CE-21 C102 Alternate Materials—Method of C403 Building Mechanical Systems ......... CE-33 Construction, Design or C404 Service Water Heating..................... CE-71 Insulating Systems ......................... CE-3 C405 Electrical Power and C103 Construction Documents ................... CE-3 Lighting Systems ......................... CE-75 C104 Inspections ........................................ CE-5 C406 Additional Energy C105 Validity ............................................. CE-6 Efficiency Options ....................... CE-93 C106 Referenced Standards ........................ CE-6 C407 Total Building Performance ............ CE-95 C107 Fees ................................................... CE-6 C408 System Commissioning ................. CE-106 C108 Stop Work Order ............................... CE-6 C409 Energy Metering and Energy C109 Board of Appeals .............................. CE-7 Consumption Management ........ CE-112 C110 Violations .......................................... CE-7 C410 Refrigeration System C111 Liability ............................................. CE-7 Requirements ............................. CE-114 Chapter 2 Definitions .............................. CE-9 Chapter 5 Existing Buildings .............. CE-119 C201 General .............................................. CE-9 C501 General .......................................... CE-119 C202 General Definitions ........................... CE-9 C502 Additions ....................................... CE-119 C503 Alterations ..................................... CE-120 Chapter 3 General Requirements .......... CE-17 C504 Repairs........................................... CE-125 C301 Climate Zones ................................. CE-17 C505 Change of Occupancy or Use ........ CE-125 C302 Design Conditions ........................... CE-17 C303 Materials, Systems Chapter 6 Referenced Standards ....... CE-102 and Equipment ............................. CE-17 2015 Washington State Energy Code, 2nd Edition CE-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 (but remains unchanged from the 2012 WSEC language) . 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. Second Edition, Effective May 1, 2017 CE-2 2015 Washington State Energy Code, 2nd Edition CHAPTER 1 [CE] SCOPE AND ADMINISTRATION SECTION C101 SECTION C102 SCOPE AND GENERAL REQUIREMENTS ALTERNATE MATERIALS-METHOD C101.1 Title. This code shall be known as the OF CONSTRUCTION, DESIGN Washington State Energy Code, and shall be cited as such. OR INSULATING SYSTEMS It is referred to herein as "this code." C102.1 General. This code is not intended to prevent the C101.2 Scope. This code applies to commercial buildings use of any material, method of construction, design or and the buildings sites and associated systems and insulating system not specifically prescribed herein, equipment. References in this code to Group R shall provided that such construction, design or insulating include Group I-1, Condition 2 assisted living facilities system has been approved by the code official as meeting the intent of this code. licensed by Washington state under chapter 388-78A < WAC and Group I-1, Condition 2 residential treatment facilities licensed by Washington state under chapter SECTION C103 246-337 WAC. CONSTRUCTION DOCUMENTS Exception: The provisions of this code do not apply to temporary growing structures used solely for the C103.1 General. Construction documents and other commercial production of horticultural plants including supporting data shall be submitted in one or more sets ornamental plants, flowers, vegetables, and fruits. A with each application for a permit. The construction temporary growing structure is not considered a documents shall be prepared by a registered design building for the purposes of this code. However, the professional where required by the statutes of the installation of other than listed, portable mechanical jurisdiction in which the project is to be constructed. equipment or listed, portable lighting fixtures is not Where special conditions exist, the code official is allowed. authorized to require necessary construction documents to be prepared by a registered design professional. C101.3 Intent. This code shall regulate the design and Exception: The code official is authorized to waive the construction of buildings for the use and conservation of requirements for construction documents or other energy over the life of each building. This code is supporting data if the code official determines they are intended to provide flexibility to permit the use of not necessary to confirm compliance with this code. innovative approaches and techniques to achieve this objective. This code is not intended to abridge safety, C103.2 Information on construction documents. health or environmental requirements contained in other Construction documents shall be drawn to scale upon applicable codes or ordinances. suitable material. Electronic media documents are permitted to be submitted when approved by the code * C101.4 Applicability. Where, in any specific case, different sections of this code specify different materials, official. Construction documents shall be of sufficient methods of construction or other requirements, the most clarity to indicate the location, nature and extent of the restrictive shall govern. Where there is a conflict between work proposed, and show in sufficient detail pertinent a general requirement and a specific requirement, the data and features of the building, systems and equipment specific requirement shall govern. as herein governed. Details shall include, but are not limited to, as applicable: Where a building ► C101.4.1 Mixed occupancy. 1. Insulation materials and their R-values. includes both residential and commercial occupancies, 2. Fenestration U-factors and SHGCs. each occupancy shall be separately considered and 3. Area-weighted U-factor and SHGC calculations. meet the applicable provisions of WSEC--Commercial 4. Mechanical system design criteria. Provisions or WSEC--Residential Provisions. 5. Mechanical and service water heating system and C101.5 Compliance. Residential buildings shall meet the equipment types, sizes and efficiencies. provisions of WSEC--Residential Provisions. 6. Economizer description. Commercial buildings shall meet the provisions of 7. Equipment and systems controls. WSEC--Commercial Provisions. 8. Fan motor horsepower (hp) and controls. C101.5.1 Compliance materials. The code official 9. Duct sealing, duct and pipe insulation and location. shall be permitted to approve specific computer 10. Lighting fixture schedule with wattage and control software, worksheets, compliance manuals and other narrative. similar materials that meet the intent of this code. 11. Location of daylight zones on floor plan. * 2015 Washington State Energy Code, 2nd Edition CE-3 ** 12. Air barrier details including all air barrier C103.6 Building documentation and close out boundaries and associated square foot calculations submittal requirements. The construction documents on all six sides of the air barrier as applicable. shall specify that the documents described in this section be provided to the building owner or owner’s authorized C103.2.1 Building thermal envelope depiction. The agent with 180 days of the date of receipt of the certificate building’s thermal envelope shall be represented on the of occupancy. construction documents. C103.6.1 Record documents. Construction C103.3 Examination of documents. The code official documents shall be updated to convey a record of the shall examine or cause to be examined the accompanying completed work. Such updates shall include construction documents and shall ascertain whether the mechanical, electrical and control drawings red-lined, construction indicated and described is in accordance with or redrawn if specified, that show all changes to size, the requirements of this code and other pertinent laws or type and locations of components, equipment and ordinances. assemblies. C103.3.1 Approval of construction documents. C103.6.2 Manuals. An operating and maintenance When the code official issues a permit where manual shall be provided for each component, device, construction documents are required, the construction piece of equipment, and system governed by this code. documents shall be endorsed in writing and stamped The manual shall include all of the following: "Reviewed for Code Compliance." Such approved construction documents shall not be changed, modified 1. Submittal data indicating all selected options or altered without