2015 International Energy Conservation Code - COAA
2015 International Energy Conservation Code Overview and Compliance Requirements 2016 COAA-MD/DC Fall Workshop Wednesday, October 5, 2016 10:30 AM - 3:30 PM Morgan State University Martha Shrader, LEED AP, BD+C Sustainability Manager University of Maryland College Park Facilities Management Design and Construction Technical Support 301-405-0575 [email protected] 2015 International Energy
Conservation Code Learning Objectives 2015 IECC Overview 2015 IECC Compliance Paths (Commercial Code) Documentation/Inspection Requirements (Commercial Code) Beyond code LEED, High Performance Building Program, campus goals 2015 International Energy Conservation Code Learning Objectives 2015 IECC Overview 2015 IECC Compliance Paths (Commercial Code) Documentation/Inspection Requirements (Commercial Code) Beyond code LEED, High Performance Building Program, campus goals
2015 International Energy Conservation Code Model Code, meant to be used in conjunction with other ICC codes (IBC, IPC, IgCC) 2015 IECC adopted by MD statute January 1, 2015. Local adoption and enforcement required by July 1, 2015. Applies to all construction in the state of Maryland up to individual jurisdictions to implement the code. Cannot be weakened. Intended to provide flexibility which also promotes complexity Includes requirements for: Building Envelope Mechanical Systems Service Water Heating Electrical Power and Lighting Systems Total Building Performance
Commissioning IECC Definitions Addition: an extension or increase in the conditioned space floor area or height of a building or structure C502.1 General. Additions to an existing building, building system or portion thereof shall conform to the provisions of this code as those provisions relate to new construction without requiring the unaltered portion of the existing building or building system to comply with this code. Repair: the reconstruction or renewal of any part of an existing building for the purpose of its maintenance or to correct damage Section 501.3 Maintenance. Buildings and structures, and parts thereof, shall be maintained in a safe and sanitary condition. Devices and systems that are required by this code shall be maintained in conformance to the code edition under which it was installed IECC Definitions ilding is
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e lt A . 7 IECC Definitions Residential Building: includes detached one- and twofamily dwellings and multiple single-family dwellings (townhouses) as well as group R-2, R-3 and R-4 buildings three stories or less in height above the grade plane Commercial Building: all buildings not included in the definition of residential building Residential or Commercial? Carroll Hall 3 stories above grade Residential
Code Mixed use one story commercial, 2 stories residential BOTH Commercial and Residential Code Cambridge Hall 4 stories above grade Commercial Code Mixed use one story commercial, four
2. IECC Performance path 3. ANSI/ASHRAE/IESNA 90.1 Prescriptive path 4. ANSI/ASHRAE/IESNA 90.1 Performance path 2015 IECC Compliance Paths (C401.2) IECC Prescriptive path The requirements of Sections C402 through C405. C402 Building Envelope C403 Mechanical Systems C404 Service Water Heating C405 Electrical Power and Lighting Systems
PLUS The requirements of Section C406, Additional Efficiency Package Options IECC Section C406 Additional Efficiency Package Options Buildings shall comply with at least one of the following C406.2 More efficient HVAC performance C406.3 Reduced lighting power density C406.4 Enhanced lighting controls C406.5 On-site supply of renewable energy C406.6 Provision of a dedicated outdoor air system C406.7 High-efficiency service water heating 2015 IECC Compliance Paths (C401.2) IECC Performance path The requirements of Section C407, Total Building Performance.
PLUS All mandatory requirements IECC 2015 Mandatory Provisions C402.5 Building Envelope Air Leakage C403.2 Mechanical Systems Heating and cooling loads, Equipment sizing, HVAC equipment performance requirements C404 Service water heating equipment performance requirements C405.2 Lighting controls C405.3 Exit signs C405.4 Interior lighting power requirements C405.5 Exterior lighting power
requirements C405.6 Electrical energy consumption [relating to metering for individual dwelling units] C405.7 Electrical transformers C405.8 Electrical motors ANSI/ASHRAE/IES Standard 90.1-2013 Compliance Paths Prescriptive path comply with provisions of section 5, Building Envelope, Section 6, Heating, Ventilating and Air Conditioning; Section 7, Service Water Heating; Section 8, Power; Section 9, Lighting; and Section 10, Other Equipment OR Performance Path comply with provisions of Section 11, Energy Cost Budget Method AND mandatory provisions in sections 5.4, 6.4, 7.4, 8.4, 9.4, and 10.4
ANSI/ASHRAE/IES Standard 90.1-2013 Mandatory Requirements 5.4 Requirements for insulation; fenestration and doors; air leakage 6.4 Equipment efficiencies, verification, and labeling requirements; mechanical calculations; controls; HVAC system construction and insulation; walk-in coolers and freezers; refrigerated display case 7.4 Electrical load calculations; equipment efficiency; service hot-water piping insulation; service water heating controls; pools; heat traps 8.4 Voltage drop; automatic receptacle control; electrical energy monitoring; low-voltage dry-type distribution transformers 9.4 Lighting control; exterior building lighting power; functional testing 10.4 Electric motors; service water pressure booster systems; elevators; escalators and moving walks; whole building energy monitoring 2015 International Energy Conservation Code
Learning Objectives 2015 IECC Overview 2015 IECC Compliance Paths (Commercial Code) Documentation/Inspection Requirements (Commercial Code) Beyond code LEED, High Performance Building Program, campus goals Energy Code Conformance Documentation Information on construction C103.2 Details shall include, but are not limited to, the following [twelve] documents items as applicable. 1. Insulation materials and R-values 2. Fenestration U-factors and solar heat gain coefficients (SHGC) 3. Area-weighted U-factor and SHGC calculations 4. Mechanical system design criteria
5. Mechanical and service water heating system and equipment types, sizes, and efficiencies 6. Economizer description Energy Code Conformance Documentation 7. Equipment and system controls 8. Fan motor horsepower and controls 9. Duct sealing, duct and pipe insulation and location 10.Lighting fixture schedule with wattage and control narrative 11.Location of daylight zones on floor plans 12.Air sealing details Would this wall comply in Zone 4? Per Table C402.2, wood framed walls, above
grade in climate zone 4 should have minimum R value of R-13 + R3.8ci or R-20. Continuous air barrier? Insulation does not extend to grade. Does this detail have the informati on needed to show complian
ce? C103.2 1. Insulation materials and their R-values. Lighting Fixture Schedule and Control Matrix C103.2 10. Lighting fixture schedule with wattage and control narrative Mechanic al Schedule s
C103.2 5. Mechanical and service water heating system and equipment types, sizes, and efficiencies. Other Documentation (varies depending on compliance path and project type) HVAC load calculations (IECC 403.2.1; ASHRAE 18.104.22.168) Daylighting calculations (IECC 2015 C405.2.3; ASHRAE 90.1-2013 5.7 & 9.7) Lighting power density calculations (IECC C405.4 & C405.5; ASHRAE 22.214.171.124 &9.4.2) Other Documentation (varies depending on compliance path and project type)
Documentation verifying methods and accuracy of compliance energy model software (IECC C407.4; ASHRAE 11.7) Energy model (different models will be needed for LEED and IECC 2015) Commissioning Plan, preliminary Cx report, final Cx report (IECC C408; ASHRAE 126.96.36.199 COMCheck Reports Commercial Compliance Using COMcheck https://www.energycodes.gov/comcheck The COMcheck product group makes it easy for architects, builders, designers, and contractors to determine whether new commercial or high-rise residential buildings, additions, and alterations meet the requirements of the IECC and ASHRAE Standard 90.1, as well as several state-specific codes. COMcheck also simplifies compliance for building officials, plan checkers, and inspectors by allowing them to quickly determine if a building project meets the code.
Commercial Compliance Using COMcheck Energy Code Conformance Documentation Required Inspections (C104.2): 1. 2. 3. 4. 5. 6. Footing and foundation Framing and rough-in Plumbing rough-in Mechanical rough-in Electrical rough-in
Final inspection Footing and Foundation Inspections Verify compliance with the code as to R-value, location, thickness, depth of burial and protection of insulation Framing and Rough-in Inspections Inspections shall be made before application of interior finish and shall verify compliance with code as to: Types of insulation and corresponding R-values and their correct and proper installation Fenestration properties (U-factor, SHGC, VT) and proper installation Air leakage controls as required by code and approved plans and specs https://www.youtube.com/watch?v=mE6DZ7Hcwoc https://www.youtube.com/watch?v=19V4CrHMiF0
Plumbing Rough-in Inspections Inspections shall verify compliance as required by code and approved plans and specifications as to: Types of insulation and corresponding R-values and protection Required controls Required heat traps Mechanical Rough-in Inspections Verify compliance as required by code and approved plans and specs as to: Installed HVAC equipment type and size; Required controls, system insulation and corresponding R-value; System and damper air leakage; Required energy recovery and economizers https://www.youtube.com/watch?v=9AN7QLW14qA
Electrical Rough-in Inspections Inspections shall verify compliance with code and approved plans and specifications as to: Installed lighting systems, components and controls Installation of an electric meter for each dwelling unit https://www.youtube.com/watch?v=Btu3_mw3aEw Final Inspection Final inspection shall include: Verification of the installation and proper operation of all required building controls, and documentation verifying activities associated with required building commissioning have been conducted and findings of non-compliance corrected. Final inspection shall not occur until the preliminary Cx report is received. 2015 International Energy Conservation Code
Learning Objectives 2015 IECC Overview 2015 IECC Compliance Paths (Commercial Code) Documentation/Inspection Requirements (Commercial Code) Beyond code LEED, High Performance Building Program, campus goals LEED vs. IECC Maryland base code is IECC 2015/ASHRAE 90.1-2013 LEED v3 Energy Model based on ASHRAE 90.1-2007 (Appendix G) LEED v4 Energy Model based on ASHRAE 90.1-2010 (Appendix G) Note: Section C102.1.1 allows the code official to deem a project using an above code program (including mandatory requirements) to be in compliance with the code. Neither LEED v3 nor LEED v4 would be considered above code compared to IECC 2015. LEED beyond IECC LEED prerequisite - whole building energy metering
LEED Credits beyond code: Enhanced Commissioning Advanced energy metering Renewable Energy Production High Performance Building Program High Performance Building Program (Fully state funded projects greater than or equal to 7,500 SF) requires either Performance based designs shall demonstrate an energy savings of at least 15% over the current version of the International Energy Conservation Code IECC). (EUIp/EUIb) =< .85 of current IECC
LEED Silver OR EUI Energy Use Intensity measured in kBtu/sf-Yr IgCC New University of Maryland College Park Energy Analysis Requirements During Design Energy modeling early in the process to inform the design Preference for open source modeling software Energy modeling reports at each design phase New University of Maryland College Park Energy Analysis Requirements After
Occupancy As Built energy model which incorporates any major changes that occur during construction Review of energy usage 12 months after occupancy to identify areas where building is not performing as designed and provide recommendations for addressing issues Looking to the Future codes moving to Zero Net Energy From: Energy and Energ y Cost Savings Analysis of the 2015 IECC for Co mmercial Buildings prep ared for the U.S. Depart ment of Energy August
2015 Estimated site EUI for a one or two story building in our area to achieve ZNE is 21 kBtu/sf-yr. 15% better would be 25 kBtu/sf-yr Challenges Gaps in documentation daylighting calculations, mechanical equipment efficiency requirements, insulation information often missing No industry standard - documentation there but hidden sometimes on drawings, sometimes in specs, sometimes in different drawings or specs than we expect, sometimes in a separate calculation submission Narrative explaining calculations and confirming code compliance is unclear or missing
Challenges Multiple energy models are required for different phases of design LEED and IECC require different modeling baselines and methodologies Keeping up with technological advances Post-occupancy Energy model not indicative of actual building energy use Building systems too complicated to manage properly Building users by-pass energy saving systems Preventive maintenance Reca pprojects in Maryland must follow the 2015 International Energy All Conservation Code new construction, renovations, additions, alterations, equipment replacements (for Washington, DC and VA 2012 IECC) Four compliance paths meet the requirements of the IECC 2015 IECC Prescriptive Path, 2015 IECC Performance Path, ASHRAE 90.1-2013
Prescriptive Path, ASHRAE 90.1-2013 Performance Path. Choose one - no mixing and matching! Construction documents must include energy code information to confirm compliance. Mandatory inspections must be documented during construction. There may be additional requirements from the jurisdiction and/or owner. 2015 International Energy Conservation Code Overview and Compliance Requirements Code Questions? Contact the Energy Code Coach sponsored by Maryland Energy Administration (301) 899-0017 [email protected] Check out the resource and training sections at EnergyCodes.gov.
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