DOER codes update BSA May 2013 - Boston Society of … codes update... · The Green Communities Act requires municipalities wishing ... • June 4–end of BBRS public comment on

Creating A Cleaner Energy Future For the Commonwealth

BSA meeting

Building Energy Code:

Overview in MAOverview in MA

Ian Finlayson

Deputy Director, Energy Efficiency Division

National Model Code Refresher

• Updates every 3 years – open stakeholder process

� Approx 30% EE savings in 6 years

� 15-20% improvement target in 2013/2015 cycle

� New ‘Green Codes’

• International Code Council (ICC)


• International Code Council (ICC)

� Int. Energy Conservation Code (IECC)

� Int. Green Construction Code (IgCC)

• ASHRAE

� Standard 90.1 (commercial energy code)

� Standard 189 (commercial green code)

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Code adoption in MA

• Independent Board of Bldg. Regulations & Standards (BBRS)

� Supports ICC codes (IECC + ASHRAE 90.1 for energy) with minimal MA amendments

� BBRS limited jurisdiction makes IgCC


� BBRS limited jurisdiction makes IgCC adoption difficult in MA

• Additional State review – Exec. Order 485

• Stretch code – needs municipal bylaw

� City council vote

� Town meeting vote

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MA Code Landscape

• Baseline Energy code: Green Communities Act requires latest IECC adoption

• Stretch Energy code: Green Communities Program needs a higher standard

• Advanced energy codes: Part of Clean Energy and Climate Plan for 2020


and Climate Plan for 2020

• Stretch code also creates opportunity

– To streamline building code

– To promote ‘performance-based’ code

– To influence future IECC updates

– To improve compliance

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*Chapter 169 of the Acts of 2008, An Act Relative to Green

Communities, §55 reads:

‘To adopt and fully integrate the latest International Energy

Conservation Code as part of the state building code, together

Statutory language: IECC adoption


Conservation Code as part of the state building code, together

with any more stringent energy-efficiency provisions that the

board, in consultation with the department of energy

resources, concludes are warranted. The energy provisions of

the state building code shall be updated within 1 year of any

revision to the International Energy Conservation Code.’

*MGL Chapter 25A, Section 10, (c),(6)

The Green Communities Act requires municipalities wishing

to be designated as ‘Green Communities’ to:

‘(6) require all new residential construction over 3,000

Green Communities : Requires a

‘stretch’ option


‘(6) require all new residential construction over 3,000

square feet and all new commercial and industrial real

estate construction to minimize, to the extent feasible, the

life-cycle cost of the facility by utilizing energy efficiency,

water conservation and other renewable or alternative

energy technologies.’

Baseline Energy Code

Creating A Cleaner Energy Future For the Commonwealth77

Baseline Energy Code Update

MA 780 CMR

• Base Energy code: IECC 2009 with MA amendments

• Stretch Energy code: Appendix 115.AA

• IECC 2012 with MA amendments in public comment period


IECC 2012 with MA amendments in public comment period

– Public hearing May 14th, 2013

– Public comments until 5pm June 4, 2013

– Email to [email protected]

• 12 month concurrency period expected

– IECC 2012 likely to take effect July 1, 2014

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Residential IECC 2009- 2012Code requirement

IECC 2009 IECC2012 Summary of Change

Improved Air sealing Optional test, max 7

ACH@50^

Mandatory test, max

3 ACH@50^

Adopts testing widely used by Stretch

code, Energy Star and LEED homes

Improved Duct sealing Max 12% /min air

leakage

Max 4% /min air

leakage

Not required if ducts stay inside

insulated spaces

Ventilation requirement Required for less

than 5 ACH@50

Required for new

homes (5 ACH@50)

Same requirement, but now applies

to all new homes due to improved air

sealing


Increased Ceiling insulation

default

R-38* R-49* 29% increase to easiest area – trade-

offs allowed

Basement/Crawl space wall

insulation default

R-10/13* R-15/19* From 4” to 6” cavity insulation or 2”

to 3” of foam

Window heat loss U 0.35* U 0.32* Improved to match current market

standard

Hot water pipe insulation Not required R-3 or shorter

thinner pipes

shortens time taken for hot water to

arrive at faucet, saving water &

energy

Efficient lighting 50% of all hard wired

fixtures

75% of all hard wired

fixtures

Code follows national phase-out of

incandescent lights

Residential MA amendments

• Clarifies mechanical ventilation language

• Updates HERS (65) + EPA checklist option

- Similar to current 2009 stretch

• Retains Passivehaus PHPP option



• Could clarify who is qualified for testing

Commercial IECC 2009- 2012Code requirement IECC 2009 IECC2012 Summary of Change

Windows Area and insulation

U-values

Default window area

is 40% of wall area

Default window area is 30%

of wall area, 40% with

daylighting, incremental

insulation increases

Improves envelope and window

insulation levels –still more glass

and less insulation than residential

Lighting power density E.g. Office 1.0

watts/ft2

E.g. Office 0.9 watts/ft2 [1] 10% improvement in energy

efficiency of office and retail

lighting

Lighting controls Some requirements Expanded with new

incentives for daylighting

Increased lighting control, and

auto-shut off for lights when not

needed


Heating and cooling load

sizing

Required Required: updated

ASHRAE/ACCA standard

Intended to ensure that heating

and cooling systems are not

oversized

Demand controlled and heat

recovery ventilation

Optional for most

buildings

Required for most with

exceptions for small bldgs,

and certain uses.

Requires fresh air to be pre-heated

by outgoing air in winter where

practical

Improved HVAC efficiency 2008 Industry

standards

2011 Industry standards Updated to match industry

efficiency improvements

HVAC Commissioning Some commissioning

required

More comprehensive

commissioning required

Ensures building heating, cooling &

ventilation operate as designed

prior to building occupancy

Cooling equipment

economizers

Required on large

equipment

Required on smaller and

simpler systems

Expands use of fresh air to help

cool buildings when conditions

allow

1 of 3 additional options No requirement Improved lighting (based on

90.1-2010) or improved

Adds cost-effective options to get

an additional 3-5% energy savings.

Commercial MA amendments

• Updates HERS (65) + EPA checklist option

- Similar to current 2009 stretch for multi-family


• Adds option for clean Biomass credit


• Adds option for clean Biomass credit

• Could require under slab insulation

- Retain IECC2009 MA amendment language

Stretch Code Update


Now at 130 communities


Stretch 2009 Residential

New Homes = Performance

• HERS rating of 65 or 70

• Energy star checklist


Renovations or Additions:

• Prescriptive code

– Energy Star Windows/Doors

• Energy star checklist

Stretch 2009 Commercial

• New buildings & additions only

• Prescriptive code 5,000-100,000 sq ft

• Performance over 100,000 sq ft.


– Uses ASHRAE appendix G / LEED energy

model

Opportunities for Stretch code

Residential:

• Keep the approach: HERS rating + Energy Star

Checklist + IECC mandatory requirements

• Move HERS rating to ~15% better than IECC 2012

– Add new tier for multi-family units


– Add new tier for multi-family units

• Improve indoor air quality – move to ‘sealed

combustion’ to reduce combustion safety risk

� Water heaters, furnaces, boilers

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Opportunities for Stretch code / CHPS

Commercial:

• Keep the approach: Prescriptive for under 100k sq ft. ASHRAE appendix G ‘LEED Model’ over 100k sq ft.

• Move to ~12-15% better than ASHRAE 90.1-2010

– Allow source or site energy modeling


– Allow source or site energy modeling

• Blower door testing for small commercial

– Low cost energy savings – under 25k sq ft

• Streamline prescriptive language in many areas

– Simplified insulation requirements

– Allow more credit for renewables & CHP

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Hypothetical timeline

• June 4– end of BBRS public comment on IECC 2012

• June 11 or July 9– BBRS vote to adopt IECC2012 update to base energy code with 12 month concurrency

• August – BBRS recess – no meeting

• Sept –December – Possible BBRS public hearing on 2012


• Sept –December – Possible BBRS public hearing on 2012 stretch update followed by 30 day comment period

• Jan 14th, 2014- BBRS vote to adopt 2012 stretch energy code update to allow at least a 6 month concurrency

• July 1, 2014 – IECC 2012 and Stretch 2012 take full effect.

• 2010: 40 trainings on IECC 2009 and stretch code.

– Designed for building code officials

– Outreach to Builders, contractors, designers

• Conclusion – more training needed

• 2011: expanded training program

Training, Training, Training


• 2011: expanded training program

– 40 Builder focused: construction best practices

How to meet & exceed the stretch code

– 15 HVAC training for sub-contractors/designers

– 5 Deep Energy Retrofits – lessons learned

Contact info:

[email protected]

617 626 4910

Thank you! Questions?


617 626 4910

IECC 2012 Public comments:

[email protected]

http://www.mass.gov/eopss/consumer-prot-and-bus-lic/license-type/csl/notice-

of-public-hearing-to-address-proposals-to-the-ma.html

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Documents

DOER codes update BSA May 2013 - Boston Society of … codes update... · The Green Communities Act requires municipalities wishing ... • June 4–end of BBRS public comment on