A Conversation on Energy Codes in Existing Buildings. Webinar April 10, 2013

Transcription

1 A Conversation on Energy Codes in Existing Buildings Webinar April 10, 2013

2 Agenda Overview / Historic Buildings Sean Denniston - NBI 15 minutes + QA Current I-Codes / Reorganization IECC Proposals Proposals for EB in Commercial Sector Proposals for EB in Residential Sector Wrap-up Eric Makela - Bitt/Makela Jim Edelson - NBI Ryan Meares - IMT 15 minutes + QA 15 minutes + QA 15 minutes + QA 5 minutes

3 A Codes Primer

4 A Codes Primer

5 Why Existing Buildings?

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10 C Additions, alterations, renovations or repairs. C Change in occupancy or use. C Change in space conditioning

11 C Additions, alterations, renovations or repairs. Additions, alterations, renovations or repairs to an existing building, building system or portion thereof shall conform to the provisions of this code as they related to new construction without requiring the unaltered portion(s) of the existing building or building system to comply with this code.

12 Section 3403 Additions. Section 3404 Alterations. Section 3405 Repairs. Section 3407 Glass Replacement. Section 3408 Change of Occupancy.

13 Chapter 5 Repairs. Chapter 6 Alterations Level 1. Chapter 7 Alterations Level 2. Chapter 8 Alterations Level 3. Chapter 9 Change of Occupancy. Chapter 10 Additions.

14 Why Existing Buildings? Existing Buildings are a significant portion of the total building stock Increasingly limited savings potential in new construction requirements Lack of clarity and consistency regarding existing buildings in the I-Codes

15 Historic Buildings EB1, CE7(I), CE7(II), CE9, PM2 Independence Hall Philadelphia, PA

16 1 Definition in Chapter 2 1 Definition in Charging Language 1 Definition in Chapter 2 0 Definitions in Chapter 2 1 Definition in Charging Language

17 HISTORIC BUILDING: Listed in the National Register Eligible to be listed in the National Register Designated as historic under an applicable state or local law

18 HISTORIC BUILDING: Listed in the National Register Eligible to be listed in the National Register Designated as historic under an applicable state or local law Certified as a contributing resource in a designated historic district Eligible to be certified as a contributing resource in a designated historic district

19 EB1, CE7(I&II), CE9, PM2: HISTORIC BUILDING. Any building or structure that is one or more of the following: 1. Listed, or certified as eligible for listing by the State Historic Preservation Officer or the Keeper of the National Register of Historic Places, in the National Register of Historic Places 2. Designated as historic under an applicable state or local law; or 3. Certified as a contributing resource within a National Register listed or locally designated historic district.

20 EXEMPT Independence Hall Philadelphia, PA

21 George C. Marshall House on Officers Row - Vancouver, WA

22 OKC: 2nd Time Around

23 Daylighting Natural Ventilation Thermal Mass Executive Office Building- Washington DC

24 Deep Floor-plate (not good for daylighting) Non-Operable Windows (no natural ventilation) Lots of Glass in Envelope (lower R than brick) Seagram Building- New York City, NY

25 New Charging Language CE7: Removes exemption for additions CE8: Only exempts changes that would be a detriment to historic character or use CE9: Exempts envelope, exterior lighting, designated interiors

26 Questions?

27 2015 Commercial Existing Building Code Change Proposals Eric Makela, Britt/Makela Group

28 IBC Chapter 34

29 IBC Chapter 34

30 International Existing Building Code The International Existing Building Code has been adopted in 41 states and territories Includes either statewide adoption or adoption by local jurisdiction Code year adopted ranges from the 2003 to 2012 IEBC

31 International Existing Building Code Alterations Additions

32 IECC Existing Building Proposals

33 IECC Existing Building Proposals Goal Clarify the IECC requirements for additions, alteration, renovations and repairs. Goal Develop a separate section for existing buildings within the IECC that can be expanded in the future

34 Commonality in Proposals CE4-13: SEHPCAC proposal builds off the existing IECC Section C Existing building language Creates new Chapter 5 Existing Buildings Adds a provision requiring that buildings be maintained in a safe and sanitary condition. Adds language on new and replacement materials that allows the use of like materials for repairs. Defines a repair and allows work on nondamaged components necessary for the required repair of damaged components to occur without needing to meet the alteration requirements of the IECC. Exempts ordinary repairs from needing a permit

35 Commonality in Proposals CE5-13: NWECG proposal builds off the existing IECC Section C and SEHPCAC work Adds new Section C409 for Additions, Alterations or Repairs Adds a provision requiring that buildings be maintained in a safe and sanitary condition from the SEHPCAC proposal. Defines a repair and allows work on nondamaged components necessary for the required repair of damaged components to occur without needing to meet the alteration requirements of the IECC from the SEHPCAC Proposal. Exempts ordinary repairs from needing a permit

36 Additions Provides roadmap that identify the provisions that must be complied with. Addresses adding vertical glazing and skylights that exceed the prescriptive requirements for the whole building Provides two options for complying with the Lighting Power Density Existing Building Addition

37 Alterations Addresses alterations that increase vertical window and skylight area. Requires economizers to be installed on new cooling systems. Office 1 Remove Duct Add Wall Add Duct Office 2

38 Requires alterations that replace greater than 10% of the luminaires in the space to comply with the code. Alterations

39 Questions?

40 The 2015 I-Codes Proposals to Increase Energy Savings in Existing Buildings Jim Edelson - NBI

41 Where do Energy Measures Interact with Existing Commercial Buildings in the I-Codes? International Building Code IBC International Energy Conservation Code IECC International Existing Building Code IBC International Property Maintenance Code IPMC ICC Performance Code ICCPC International Green Construction Code IgCC >>>>>>>>>>Certificate of Occupancy>>>>>>>>>>

42 Ready-to-adopt Energy Efficiency 2015 I-Code proposals build upon existing code structures and provisions 2015 I-Code proposals provide more logical organization, clear thresholds and enforceable requirements 2015 I-Code proposals address largest pool of available cost-effective energy savings usually available in community

43 Proposals valid for ALL Climate Zones

44 Definition of Historic Buildings (CE7(parts i &ii), CE9, EB1, PM2) International Energy Conservation Code Commercial and Residential International Existing Building Code International Property Maintenance Code Consistent charging language and definition

45 Major Renovations of Low- Performance Buildings (EB51) Clearly defined threshold set for lowest quartile based on actual energy usage Only applies to Level III Alterations in IEBC Flexible compliance options choose two of nine measures in the IECC

46 Retrocommissioning (PM10) Addresses continued occupancy and maintenance Only for buildings greater than sq ft Begins after five years of occupancy Excludes all leased areas Based on New York City Ordinance LBNL found average payback of 1.1 years

47 Minimum Performance Levels (PM12) Addresses continued occupancy and maintenance Adds energy to general requirements Threshold set for lowest quartile based on actual energy usage International Property Maintenance Code compliance and enforcement already established

48 Performance Based on Energy Outcomes (PC2, PC3) ICC Performance Code Adds new Acceptable Methods for demonstrating energy performance based on measured energy use (actual energy performance) PC2 adds detail for establishing energy indices to be based on actual energy use PC3 adds documentation path for submitting energy usage records

49 Summary of Proposals SCOPE Historic Building Definition RENOVATION Measures on low-performing bldgs O&M Retrocommissioning O&M Bottom Quartile Performance Levels PERFORMANCE CODE Actual Use Indices PERFORMANCE CODE Actual Use Compliance

50 Questions? Jim Edelson

51 Residential Existing Buildings Ryan Meres Code Compliance Specialist Institute for Market Transformation April 10, 2013

52 Overview ~15 proposals impact residential existing buildings General themes this code cycle: 1. Clean and Clarify 2. Consolidate 3. Historic Buildings

53 Proposals to Clean up and Clarify the EB Provisions The following are smaller changes: RE1 Deletes exception 6 in Sect. R a non-residential exception CE1, Part II Reorganizes Sect. 101 to improve clarity CE15, Part II Revises exception 5 in Sect. R to clarify roofing requirements Adds definitions

54 Proposals to Clean up and Clarify the EB Provisions Smaller revisions, continued CE 11, Part II Adds new exception for single pane windows with surface applied window film CE16, Part II Adds sentence at end of requiring attic bypasses to be sealed prior to installation of insulation. CE20, Part II Clarifies that any space or portion thereof being converted to a dwelling unit from another occupancy must comply with code. exception allows 10% inc. in total UA or simulated performance when used

55 Proposal to Consolidate EB Provisions in New Chapter CE4, Part II deletes Ch. 1 EB provisions, creates new Chapter 5 Existing Buildings NEW Chapter 5 formatted as follows: R501 General scope/application R502 Additions R503 Alterations R504 Repairs Actual provisions largely the same as contained in current Chapter 1 language.

56 Proposal to Consolidate, Clean and Clarify the EB Provisions RE184 deletes R and substitutes with reference to new section R406. NEW section R406 formatted as follows: R406.1 R406.4 General scope/application R Additions R Alterations R Repairs Ref. to appropriate sections that apply for envelope, mechanical, water heating and lighting. Contains current exceptions and new ones Env. leakage test not req d for alterations Clarifies duct leakage testing requirement

57 Proposal to Consolidate all EB provisions to the IEBC CE19 deletes the Change of occupancy, Change of space conditioning and Mixed occupancy provisions from the IECC and puts them into the IEBC.

58 Proposals related to historic buildings CE6, Part II deletes the historic building language from the IECC and moves it to the IEBC. CE7, Part II Revises historic buildings from an outright exemption to clarify that the IECC is not mandatory. Adds definition of historic building to Ch. 2.

59 Proposals related to historic buildings CE8, Part II historic buildings shall comply with IECC to the extent that it doesn t impact historic integrity of building adds def. of historic building to Ch. 2. CE 9, Part II requires historic buildings to comply, with exceptions for building envelope, lighting, listed interiors, impact to historic integrity. adds def. of historic building to Ch. 2. CE10, Part II historic buildings shall comply except when historic integrity is impacted.

60 Thank You Ryan on Twitter ext. 314

61 Questions?

62 Committee Action Hearings Dallas, TX April On deck: Public Comment Hearings Atlantic City, NJ October 2-9 Hearings Schedule and Code Proposals available at: