WASHINGTON STATE ENERGY CODE -COMMERCIAL 2018 …

1 WASHINGTON STATE ENERGY CODE -COMMERCIAL 2018 EDITION chapter 51-11C WAC WASHINGTON STATE BUILDING CODE COUNCIL EFFECTIVE JULY 1, 2020 2018 WASHINGTON STATE ENERGY Code, 1st Edition ii Copies of the STATE Building Codes and complete copies of the 2018 Model Codes may be obtained from: WASHINGTON Association of Building Officials Post Office Box 7310 Olympia, WASHINGTON 98507-7310 (360) 628-8669 First Edition 2018 WASHINGTON STATE ENERGY Code -COMMERCIAL Effective July 1, 2020 Printed February 2020 First Edition based on WSR 19-24-040 chapter 51-11C WAC 2018 WASHINGTON STATE ENERGY Code, 1st Edition iii chapter 51-11C WAC STATE BUILDING CODE ADOPTION AND AMENDMENT OF THE 2018 EDITION OF THE INTERNATIONAL ENERGY CONSERVATION CODE, COMMERCIAL PROVISIONS WASHINGTON STATE ENERGY CODE, COMMERCIAL PROVISIONS table OF CONTENTS chapter 1 Scope and Administration.

2 CE-1 C101 Scope and General Requirements .. CE-1 C102 Alternate Materials Method of Construction, Design or Insulating Systems .. CE-1 C103 Construction Documents .. CE-2 C104 Inspections .. CE-4 C105 Validity .. CE-5 C106 Referenced Standards .. CE-5 C107 Fees .. CE-5 C108 Stop Work Order .. CE-6 C109 Board of Appeals .. CE-6 C110 Violations .. CE-6 C111 Liability .. CE-6 chapter 2 Definitions .. CE-7 C201 General .. CE-7 C202 General Definitions .. CE-7 chapter 3 General Requirements .. CE-19 C301 Climate Zones .. CE-19 C302 Design Conditions .. CE-19 C303 Materials, Systems and Equipment .. CE-19 chapter 4 Commercial ENERGY Efficiency .. CE-25 C401 General.

3 CE-25 C402 Building Envelope Requirements .. CE-25 C403 Building Mechanical Systems .. CE-40 C404 Service Water CE-89 C405 Electrical Power and Lighting Systems .. CE-95 C406 Additional ENERGY Efficiency Options .. CE-118 C407 Total Building Performance .. CE-123 C408 System Commissioning .. CE-125 C409 ENERGY Metering and ENERGY Consumption Management .. CE-130 C410 Refrigeration System Requirements .. CE-133 C411 Solar Readiness .. CE-138 chapter 5 Existing Buildings .. CE-141 C501 General .. CE-141 C502 Additions .. CE-142 C503 Alterations .. CE-143 C504 CE-149 C505 Change of Occupancy or Use .. CE-149 chapter 6 Referenced Standards .. CE-151 2018 WASHINGTON STATE ENERGY Code iv WASHINGTON STATE ENERGY CODE, APPENDIX CHAPTERS table OF CONTENTS Appendix A Default Heat Loss Coefficients.

4 AE-3 A101 General .. AE-3 Scope .. AE-3 Description .. AE-3 Air Films .. AE-3 R-Value of Compressed Insulation .. AE-3 Building Materials .. AE-3 A102 Ceilings .. AE-5 Default U-Factors for Ceilings .. AE-5 Component Description .. AE-5 Vented Attic .. AE-5 Vaulted Ceiling .. AE-5 Roof Decks .. AE-5 Metal Truss Framing .. AE-5 Metal Building Roof .. AE-7 Insulation Entirely Above Roof Deck .. AE-8 A103 Above Grade Walls .. AE-12 General .. AE-12 Framing Description .. AE-12 Component Description .. AE-12 Single Stud Wall .. AE-12 Strap Wall .. AE-17 Double Stud Wall .. AE-17 Log Wall.

5 AE-17 Stress Skin Panel .. AE-17 Metal Stud Walls .. AE-17 Concrete and Masonry Walls .. AE-17 A104 Below Grade Walls and Slabs . AE-28 General .. AE-28 Component Description .. AE-28 Insulation Description .. AE-29 A105 Floors Over Unconditioned Space .. AE-29 General .. AE-29 Crawlspace AE-31 Construction Description AE-31 A106 On-Grade Slab Floors .. AE-31 General .. AE-31 Component Description .. AE-32 Insulation Description .. AE-32 A107 Default U-Factors for Doors AE-32 Doors Without NFRC Certification .. AE-32 A108 Air Infiltration .. AE-36 General .. AE-36 Appendix B Default Internal Load Values and Schedules.

6 AE-37 B101 General .. AE-37 B102 Default Tables of Internal Loads .. AE-37 B103 Default Schedules .. AE-38 Appendix C Exterior Design Conditions .. AE-49 Appendix D Calculation of HVAC Total System Performance Ratio .. 51 Appendix E Renewable ENERGY .. 61 Appendix F Outcome-Based ENERGY 63 2018 WASHINGTON STATE ENERGY Code v Margin Markings Indicates where a section hasbeen deleted from therequirements of the 2015 IECC> Indicates 2018 IECC languagedeleted by WASHINGTON stateamendmentIndicates a change from therequirements of the 2015 IECCin the model code. Indicates a WASHINGTON stateamendment to the 2018 IECC(but remains unchanged fromthe 2015 WSEC language).

7 Indicates a change from the2015 WASHINGTON stateamendment*Indicates that text or table hasbeen relocated within the code**Indicates the text or tableimmediately following hasbeen relocated there fromelsewhere in the code. 2018 WASHINGTON STATE ENERGY Code CE-1 < chapter 1 [CE] SCOPE AND ADMINISTRATION SECTION C101 SCOPE AND GENERAL REQUIREMENTS Title. This code shall be known as the WASHINGTON STATE ENERGY Code, and shall be cited as such. It is referred to herein as "this code." Scope. This code applies to commercial buildings and the buildings sites and associated systems and equipment. References in this code to Group R shall include Group I-1, Condition 2 assisted living facilities licensed by WASHINGTON STATE under chapter 388-78A WAC and Group I-1, Condition 2 residential treatment facilities licensed by WASHINGTON STATE under chapter 246-337 WAC.

8 Building areas that contain Group R sleeping units, regardless of the number of stories in height, are required to comply with the commercial sections of the ENERGY code. Exception: The provisions of this code do not apply to temporary growing structures used solely for the commercial production of horticultural plants including ornamental plants, flowers, vegetables, and fruits. A temporary growing structure is not considered a building for the purposes of this code. However, the installation of other than listed, portable mechanical equipment or listed, portable lighting fixtures is not allowed. Intent. This code shall regulate the design and construction of buildings for the use and conservation of ENERGY over the life of each building.

9 This code is intended to provide flexibility to permit the use of innovative approaches and techniques to achieve this objective. This code is not intended to abridge safety, health or environmental requirements contained in other applicable codes or ordinances. 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. Mixed residential and commercial buildings. Where a building includes both residential building and commercial building portions, each portion shall be separately considered and meet the applicable provisions of WSEC--Commercial Provisions or WSEC--Residential Provisions.

10 Compliance. Residential buildings shall meet the provisions of WSEC--Residential Provisions. Commercial buildings shall meet the provisions of WSEC--Commercial Provisions. 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. Appendices. Appendices A, B, C and D are included in the adoption of this code. Provisions in appendices E and F shall not apply unless specifically adopted by the local jurisdiction. SECTION C102 ALTERNATIVE MATERIALS, DESIGN AND METHODS OF CONSTRUCTION AND EQUIPMENT General. The provisions of this code are not intended to prevent the installation of any material, or to prohibit any design or method of construction not specifically prescribed by this code, provided that any such alternative has been approved.