New Construction & Energy Codes
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New Construction & Energy Codes Multifamily Building Lifecycle Series September 26 th , 2012
Transcript of New Construction & Energy Codes
New Construction &
Energy Codes
Multifamily Building Lifecycle Series
September 26th, 2012
Introductions
The Heschong Mahone Group, Inc
Consulting on energy efficiency for buildings
Based in California:
– Headquarters in Sacramento region
– Offices in Bay Area and San Diego region
Expertise in multifamily and residential energy efficiency program implementation throughout California
www.h-m-g.com/multifamily
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Today’s Agenda
1. 2013 Title 24 Energy Standards Preview
2. Funding Programs
3. Questions and Discussion
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Energy Management
• Energy management guidelines
• Benchmarking and utility tracking
Tenant Programs and Education
• Tenant education
• SDG&E low income programs
Energy Upgrade Approach
• Trigger points
• Energy upgrade measures
• Funding finder tool
Energy Upgrade Implementation
• HERS assessment
• Programs and rebates
• Return on investment
New Construction • Integrated design
• New Title 24 Energy Standards
• Programs and rebates
Multifamily
Building
Lifecycle
Thank you to our sponsor
This webinar series is sponsored by San Diego Gas and Electric through the Local Government Partnership program with the City and County of San Diego.
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2013 Title 24 Standards
Preview
Section 1
Overview
Overarching Title 24 Topics
Low Rise Residential
– Mandatory measures
Question Break
– Prescriptive Changes
Question Break
High Rise Residential Updates
– Mandatory Measures
– Prescriptive Changes
Question Break
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Overarching Topics
Section 1A
Why Energy Standards?
Reduce energy costs
Increase availability and reliability of electricity
Improve occupant comfort
Reduce the impact on the environment
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Why Change?
2013 Update drivers:
California Energy Efficiency Strategic Plan
By 2020 – All new residential construction net
zero energy
– Low income single, multi-family homes more energy efficient
By 2030 – All new nonresidential construction net
zero energy
HVAC industry transformed for optimal system performance
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Overarching Updates
• January 1, 2014 Implementation date
• Application for permit on or after this date use 2013 Standards
• The Standards ‘subchapters’ have been renumbered
• Section 150 becomes 150.0
• Section 151 becomes 151.0
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Overarching Updates
• TDV (Time Dependent Value) multipliers are changing
• Electricity, natural gas, propane
• (Energy units) X (Applicable TDV multiplier)
• Multipliers vary by:
• Energy type, climate zone, building type, date and hour
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Overarching Updates
Values for TDV energy will increase
Multipliers for electricity and Propane increase significantly
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Overarching Updates
A central data registry or repository for all residential HERS and
Nonresidential compliance
documents to be created
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Overarching Updates
• New weather files from 2009 NREL data for compliance performance software
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Overarching Updates
• There is only 1 low rise residential alternative component package (prescriptive)
• Component Package A
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Low Rise Residential
Mandatory Measures
Section 1B
Residential – Mandatory Measures
• Minimum building energy measures
• Building envelope
• Fireplaces
• Space conditioning
• Water heating
• Ducts and fans
• Pools and spas
• Lighting
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Residential – Mandatory Measures
• Frame wall insulation -> R15
• Ceiling/roof insulation ->R30
• Raised floor insulation ->R19
• Crawlspaces to have vapor retarder at earth floor (all CZ)
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Residential – Mandatory Measures
• Maximum fenestration U-factor = 0.58
• Can average across entire home HERS Duct testing added
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Residential – Mandatory Measures
• HERS Duct testing added
• Minimum duct insulation = R6
• Condensing units located a minimum 5 feet away from dryer vent
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Residential – Mandatory Measures
• Water System Piping Insulation:
• ALL piping:
• with diameter of ¾” or larger
• associated with recirculation systems (regardless of diameter)
• Hot water pipes from the heating source to the kitchen fixtures
• Buried below grade hot water piping:
• Installed in water proof and non-crushable casing/sleeve
• To allow for installation, removal and replacement
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Residential – Mandatory Measures
• Residential Lighting
• No change to the kitchen 50%
• ALL kitchen lighting controlled
• Vacancy sensor or dimmer
• Bathroom
• Needs 1 high efficacy fixture AND
• All other lighting to be high efficacy or controlled by vacancy sensor
• Garages, Laundry and Utility rooms
• Hard wired lighting MUST be high efficacy AND
• Be controlled by vacancy sensor
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Residential – Mandatory Measures
• Low Rise Multifamily Outdoor Lighting
• Buildings with 4+ dwelling units:
• Private patios, entrances, balconies, porches
• Parking/Carports (less than 8 vehicles)
• Must be high efficacy, or controlled by a photocell and motion sensor
• All other areas comply with nonresidential outdoor lighting
• Same for parking lots or carports with 8 or more vehicles
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Residential – Mandatory Measures
• Low Rise Multifamily Interior Common Areas
• Total interior common area = 20% or less CFA, shall be:
• High efficacy or Controlled by an occupancy sensor
• Total Interior common area = more than 20% CFA
• Comply with Nonresidential standards
• Corridors and stairwells
• Controlled by occupant sensors
• Turn full on-full off from all entryways or exits
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Residential – Mandatory Measures
• Continuous operation of air handler cannot be used to meet ventilation requirements plus air flow is HERS verified
• Return Duct Sizing
• Less than 30’ in length
• Labeled for airflow
• Follow Table 150.0 for sizing
• OR HERS test for airflow and the fan watt draw
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Residential – Mandatory Measures
• Solar Ready - Occupancies covered:
• SF located in subdivisions w-10 or more homes
• Low rise multifamily
• High rise multifamily w-10 stories or less
• Solar Zone
• Single Family = 250 sqft • Exception for 3+ story homes, 150 sqft
• Multifamily (LR & HR)
• 15% of total roof area
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Questions? Comments?
Low Rise Residential Prescriptive changes and how they
affect performance compliance
Section 1C
Residential – Prescriptive Changes
• Frame Walls above grade (All CZ)
• R15+R4
• R13+R5
• Mass Walls Above Grade
• Interior R13 in all CZ except 16 (R17)
• Exterior R8 in all CZ except 16 (R13)
• Mass Walls Below Grade
• Interior R13 in all CZ except 16 (R15)
• Exterior R5 in CZ 1-13, R10 in 14-15, R19 in CZ 16
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Residential – Prescriptive Changes
• Radiant Barrier required in all CZ except 1 and 16
• Max U-factor in all CZ changed 0.32
• Max SHGC changed to 0.25
• No thermal mass requirement in any CZ
• Whole house fan requirement added for CZ8 – 14
• Duct insulation increases in some CZ to R-8
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Residential – Performance
• ACM still under development
• New software will feature a new simulation “engine”
• California Simulation Engine (CSE)
• More accurately estimate:
• Solar gain impacts on cooling and peak loads
• Building shell, interior mass impacts
• Ventilation interaction with mass
• Add capability for comfort analysis, mechanical ventilation
• Build on UZM model
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Bruce Wilcox, 2011
Residential – Performance
• New CSE
• Simulations: more of them, more detailed
• Run times will be slower
• CEC to maintain “Compliance Manager” software
• Provides standard/proposed building modeling rules
• All software vendors will use this for Title 24 results
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Questions? Comments?
High Rise Residential
Section 1D
High Rise Residential
January 1, 2015 – All nonresidential compliances documents uploaded to HERS provider
– Registered versions issued by provider
– Registered versions required by building department
Applies to ALL nonresidential buildings
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High Rise Residential
Nonresidential Performance modeling
– Under development
Adding new building types
– Data Centers
– Computer rooms
Adding standard design system types
– Single zone VAV
– Warehouses without AC
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Building Commissioning
New Section 120.8
Definition:
– Systematic quality assurance
– Spans design and construction phases
– Includes verifying and documenting systems and components
Planned, designed, installed, tested
Operated, maintained - meeting project requirements
All new nonresidential buildings
– More than 10,000 square feet
– Includes multifamily high rise
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Building Commissioning Summary of requirements (more than
10,000sq ft) – Owner or owner’s representative project
requirements
– Basis of design
– Design phase review
– Commissioning measures in construction documents
– Commissioning plan
– Functional performance testing
– Documentation and testing
– Commissioning report
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Design Review
All nonresidential, hotel/motel, highrise residential
This is to encourage:
– Best practices in design
Easier to construct/maintain
– Title 24 compliant/above code
Two more Certificates of Compliance
– Design Review Kickoff
– Document Design Review
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Nonresidential (High Rise Res)
New Mandatory Insulation requirements (Section 120.7)
Weighted average U-factors
– Roof/Ceiling
Metal buildings 0.098 (R11)
Wood framed & Others 0.075 (R19 wood frame)
– Walls
Metal building 0.113 (R13); Metal Frame 0.098 (R8 rigid over frame)
Light Mass 0.44; Heavy Mass 0.69
Wood framed & Others 0.110 (R11)
Spandrels and Curtain 0.28
– Floors
Raised mass 0.269 or 3” of lightweight concrete
Other floors 0.071 (R11)
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Nonresidential (High Rise Res)
Prescriptive requirements for High Rise
– Table 140.3-C in the Standards
– Table is restructured
Cool Roof
– Low sloped = less than 2:12
– Steep sloped = more than 2:12
– Removed reference to weight of roofing product
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Nonresidential (High Rise Res)
Prescriptive requirements for High Rise, cont.
Fenestration
– Prescriptive table is reorganized
– Using area weighted performance ratings
– All values are for all climate zones
Max U-factor, Max RSHGC, Minimum VT
– Maximum ‘vertical’ fenestration window to wall ratio = 40%
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Nonresidential (High Rise Res)
Prescriptive requirements for High Rise, cont.
Air Barriers
– Materials and assemblies joined and sealed to prevent air leakage from conditioned spaces to unconditioned spaces
– Required for all other buildings in CZ 10 – 16 but…
– NOT for High Rise Residential
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Nonresidential High Rise Res
Solar Zones
Required on all nonresidential, high rise residential and hotel/motel buildings
Minimum of 15% of the roof area
See Section 110.10 for exceptions for locating solar zones
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Linda’s Key Take-a-ways and
Other Info
Section 1E
Other information
Compliance Manuals
– Draft Residential Version
Should be posted on or around October 8, 2012
– Draft Nonresidential Version
Should be posted on or around October 22, 2012
Pay attention, review the draft versions, send in your comments, concerns and/or suggestions
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Take-a-ways
It’s going to be challenging
It’s going to take project teamwork
Architects and/or Building designers – beware!
– No longer can you avoid knowing about Title 24
– No longer can buildings be designed and tossed to the energy consultant
It could be a lot of fun!
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Take-a-ways
Thank you!!
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Questions? Comments?
Funding Programs
Section 2
Funding Opportunities
Utility
– California Advanced Homes Program (CAHP)
– California Solar Initiative
Tax Credit/Deductions
– Federal tax deduction (179D)
– State (low-income housing, TCAC)
Grants
– Enterprise Green Communities
– LEED Affordable Housing
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Program Matrix
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California Advanced Homes Program
• Residential New Construction incentives from California’s investor-owned utilities (PG&E, SDG&E, SCE, SCG)
• Calculated incentives based on Title 24 compliance percent (must exceed 15%)
• Incentives increase incrementally with the performance of the home – from $200 to $10,000 per home or unit
• www.californiaadvancedhomes.com
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For more program information, please
see the CAHP Participant Handbook or
contact you utility representative.
CAHP Measure Trends Envelope
– Insulation
– Superior air seal
– Advanced wall systems
– Radiant barrier
Space heating and cooling – High efficiency HVAC
– Combined heating, cooling and domestic hot water systems
– No cooling in coastal climates
Domestic hot water (DHW) – High efficiency DHW
– Tankless DHW
– Combined systems
Increased HERS verifications
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CAHP Contacts San Diego Gas & Electric Company
Phone: (866) 631-1744 Email: [email protected] Web: www.sdge.com/construction
Southern California Edison Phone: (714) 973-5776 Email: [email protected] Web: www.sce.com
Southern California Gas Company Phone: (866) 563-2637 Email: [email protected] Web: www.socalgas.com/construction
Pacific Gas and Electric Company Single-Family Phone: (866) 352-7457 Email: [email protected]
Pacific Gas and Electric Company Multi-Family Phone: (866) 352-7457 Email: [email protected] Web: multifamily.h-m-g.com (Heschong Mahone Group)
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Tax Deduction (Federal)
Federal commercial building tax deduction (high-rise only)
26 USC § 179D
$0.30 - $1.80/sf
Calculate savings using energy modeling (EnergyPro, etc.)
Expires 12/31/2013
www.efficientbuildings.org
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Source: www.inhabitat.com
Tax Credits (CA) Sustainable building
method (SBM) point scoring requirements – competitive credits
‘Application’ and ‘placed in service’ submittal phases
Minimum performance criteria
Team qualification criteria
www.treasurer.ca.gov/ctcac/sustainable
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Enterprise Grants Charrette Grants: Up to $5,000
to assist housing developers with integrating green building systems in their developments and engage in a serious discussion of green design possibilities.
Sustainability Training Grants: Up to $5,000 to cover the design and distribution of an operations and maintenance manual and the development and implementation of a green training curriculum.
www.enterprisecommunity.com/financing-and-development/grants
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Source: www.enterprisecommunity.com
LEED Grants The Affordable Green
Neighborhoods Grant Program will award grants and provide educational resources to affordable housing developers and related public agencies who choose to pursue LEED 2009 for Neighborhood Development certification.
www.usgbc.org/homes
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Source: www.usgbc.org
Other Resources
www.dsireusa.org
– Database of incentives for renewables and efficiency
http://energy.gov/savings
– Tax credits, rebates, and savings
www.energyupgradeca.org
– ‘Funding Finder’ for multifamily properties
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There’s more!
More trainings to come, register at: www.h-m-g.com/multifamily/lifecyclewebinars.pdf
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New Construction Webinar Series
Date Topic
Today Benchmarking and Multi-Family Buildings
April 17 ENERGY STAR v3: The Impact on Multi-Family Buildings
June 19 Post-Construction Energy Efficiency: Continued Savings Through Maintenance and Tenant Behavior
October 16 Heads Up: What the New Title 24 Means for Multi-Family
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2012 Schedule
To register: http://multifamily.h-m-g.com/training/
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Contacts
Linda Murphy
Heschong Mahone Group, Inc.
Sophia Hartkopf
Heschong Mahone Group, Inc.
www.h-m-g.com/multifamily
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Questions? Comments?
