What you need to know about the
adoption of 2012- IECC Code in Arizona
and the ASHRAE 90.1-2010 Changes
Jalal Avades
P.E., C.E.M., CxA, LEED-AP
AGR Consulting, LLC
Agenda
 ASHRAE 90.1 Standard and its Evolution
 IECC and its Evolution
 ASHRAE 90.1-2010 major revisions and changes
 2012 IECC major revisions
 Building Energy Systems Commissioning
 2012 IECC Adoption in Arizona
 Q&A
Standard 90.1 Timeline
1980
1989
Std 90-75
Std 90A-80
Std 90B-75
Std 90.1-89
2000
1990
1980
1970
1975
2010
2013
Maturity period
Growing period
1999
Std 90.1-99
2001
Std 90.1-01
2004
Std 90.1-04
2007
Std 90.1-07
ASHRAE 90.1-2010
Progress Indicator (PI) 30% goal
The Goal is to lower the energy usage by
30% compared to the ASHRAE 90.1-2004
Performed by Pacific Northwestern
National Laboratory (PNNL)

90.1-2004 = baseline

90.1-2007 = 90.1-2004 + 44 addenda

90.1-2010 = 90.1-2007 + 112 addenda
PNNL Progress Indicator –
Principal
Building
Activity
Floor area (ft²)
Number of
Floors
Small office
5,500
Medium office
90.1 Prototype Buildings
Office
Mercantile
Education
Health Care
Lodging
Building Prototype
Heating
Cooling
1
Heat Pump
Unitary DX
53,600
3
Gas furnace
Unitary DX
Large office
498,600
12
Boiler
Standalone retail
Strip mall
Primary school
24,695
22,500
74,000
1
1
1
Gas furnace
Gas furnace
Gas furnace
Secondary school
210,900
2
Boiler
Outpatient health
care
40,950
3
Boiler
Hospital
241,410
5
Boiler
Small hotel/motel
43,200
4
Electricity
Large hotel
122,132
6
Boiler
49,500
1
2,500
1
5,500
Non-refrigerated
warehouse
Fast food
restaurant
Food Service
Sit-down
restaurant
Mid-rise
apartment
Apartment
High-rise
apartment
Warehouse
Chiller, cooling
tower
Unitary DX
Unitary DX
Unitary DX
Air cooled
chiller
Unitary DX
Chiller, cooling
tower
DX
Air cooled
chiller
Primary
System
CAV
VAV w/ elect.
reheat
Secondary
System
No
No
VAV w/reheat No
CAV
CAV
CAV
No
No
No
VAV w/reheat CAV
VAV w/reheat No
VAV w/reheat Central CAV
PTAC
No
Fan-coil units
VAV w/reheat
Unitary DX
Unit heater
CAV
Gas furnace
Unitary DX
CAV
No
1
Gas furnace
Unitary DX
CAV
No
33,700
4
Gas
Split DX
CAV
No
84,360
10
Boiler
Fluid Cooler
Water-source
No
heat pump
Gas furnace
U.S. Climate Classifications
Int. Energy Code-Evolution






1973: First Model Energy Code (MEC) was
published by CABO
1998: IECC was published by the three model code
groups (BOCA, UBC and SBCC) who were merging
into the International Code Council (ICC)
2000: First IECC was published by ICC with 19
Climate Zones (CZ).
2006: Climate Zones reduced to only 8 Zones.
2009: Residential Buildings was added.
2013: The latest IECC Version
ASHRAE Standard 90.1-2010
Building Envelope Revisions - 1



Continuous air barrier is required
in most buildings. (5.4.3.1)
Tightened air leakage requirements
for fenestration and doors. (5.4.3.2)
The vestibule requirement was modified.
(5.4.3.2)


The insulation requirement were made more
stringent for metal building. (5.5.3.1 & 5.5.3.2)
Cool roof is now a requirement in some
climate zones (1, 2 and 3). (5.5.3.1.1)
ASHRAE Standard 90.1-2010
Building Envelope Revisions - 2



Vertical fenestration must be less than 40%
of the gross wall area. (5.5.4.2.1)
Large spaces (including unconditioned
spaces) with tall ceiling and under a roof
must have a minimum skylight area and
automatic daylighting controls for
daylighting purposes. (5.1.2.2 & 5.5.4.2.3)
Exceptions are provided to SHGC
requirements for dynamic glazing.
(5.5.4.4.1)
ASHRAE Standard 90.1-2010
HVAC Systems Revisions - 1

Extension of the requirements to process
facilities (industrial and manufacturing).
(Section 2.1.a.4)

New requirements for data centers.

Updated efficiencies to all categories
of heating and cooling equipment.

Liquid to liquid heat exchangers are
now covered under AHRI-400 certification
requirements.
ASHRAE Standard 90.1-2010
HVAC Systems Revisions - 2




Restrictions on pump head sizing
and pipe sizing. (6.4.2.2)
VAV requirement for direct expansion (DX)
and chilled water systems that serves a
single zone. (6.4.3.10)
Significant increases to the insulation
requirement for pipes and ducts. (6.4.4)
New requirements for radiant panel
system. (6.4.4.1.4)
ASHRAE Standard 90.1-2010
HVAC Systems Revisions - 3




Major changes to airside economizer
requirements. (6.5.1)
Significant changes to damper leakage
requirements. (6.5.1.1.4)
Significant changes to
reheat/recool minimums.
(6.5.2)
New requirement for dynamic ventilation
control on multiple zone VAV systems
following Standard 62 Appendix A.(6.5.3.3)
ASHRAE Standard 90.1-2010
HVAC Systems Revisions - 4



A limitation on the use of centrifugal fan
open-circuit cooling towers. (6.5.5.3)
A climate-based requirement
for energy recovery. (6.5.6)
New requirements for garage
and kitchen ventilation controls.
(6.4.3.4.5 & 6.5.7)

New requirements for laboratory exhaust.
(6.5.7.2)
ASHRAE Standard 90.1-2010
Service Water Heating Revisions
NO Revisions was made in this Section
from ASHRAE 90.1-2007
to ASHRAE 90.1-2010
ASHRAE Standard 90.1-2010
Power Section Revisions

Half of the convenience electric outlets
need to be controlled such that power is
turned off when the space is not occupied.
(8.4.2)

Efficiency requirements are added for drytype transformers. (8.4.3)
ASHRAE Standard 90.1-2010
Lighting Section Revisions - 1
General

Increased documentation requirements. (9.7)

Lighting alteration requirements now: (9.1.2)
- Take effect at 10%+ replacement.
- Include exterior areas
- Include renovations even when just the
lamp and/or ballast type is new.
- Require compliance with auto shut-off
requirements.
ASHRAE Standard 90.1-2010
Lighting Section Revisions - 2
Interior Lighting
 Many changes have been made to LPD
values (Tables 9.5.1 & 9.6.1) and an adjustment
factor has been added for taller spaces. (9.6.3)



Additional LPD is allowed when using certain
non-mandatory controls. (9.6.2c)
Additional allowances for retail
accent lighting have been reduced. (9.6.2b)
Multi-use spaces now use multiple LPD
values. (9.6.1)
ASHRAE Standard 90.1-2010
Lighting Section Revisions - 3
Exterior Lighting

LPDs have been divided up into 5 lighting
zones based on ambient light levels. (9.4.3)
ASHRAE Standard 90.1-2010
Lighting Section Revisions - 4
Lighting Control



(9.4)
Added Bi-level control requirement.
Auto shutoff, based on occupancy,
now required in more space types.
Certain required controls must either be
Manual ON or Auto ON to no more than
50% power.
ASHRAE Standard 90.1-2010
Lighting Section Revisions - 5
Lighting Control (Cont.)



Removed 5,000 square feet threshold for
auto shutoff.
Functional testing of some lighting
controls now required. (9.4.4)
Daylight harvesting is required in certain
situations. (5.5.4.2.3)
ASHRAE Standard 90.1-2010
Other Equipment Section Revisions


Control Requirements have been added
for water pressure booster pump
systems. (10.4.2)
Requirements have been added for
elevators to limit lighting power and
limit fan power, and for controls to deenergize lighting and ventilation in the
elevator cab during standby mode.
(10.4.3)

Motor efficiency requirements have
been changed for motors manufactured
after December 19, 2010.
ASHRAE Standard 90.1-2010
Energy Cost Budget Method (ECB)
Documentation Requirements:
1. The energy cost budget for the budget building
design and the design energy cost for the proposed
design.
2. A list of energy-related features that are included in
the design and on which compliance with the provisions
of Section 11 is based.
3. The input and output report(s) from the simulation
program, including breakdown of energy usage for at
least; lights, HVAC equipment, and service water heating
equipment, etc.
ASHRAE Standard 90.1-2010
App-G Performance Rating Method


This performance rating method is a
modification of the Energy Cost Budget
(ECB) in Section 11 and is intended for use
in rating the energy efficiency of building
design that exceed the requirements of
this standard.
This performance rating method requires
conformance with the mandatory
provisions of the standard and are
prerequisites for the LEED rating system.
ASHRAE Standard 90.1-2010
App-G Performance Rating Method



The Performance Rating Method is now a
normative part of the Standard, whereas
previously it was informative.
Heated only storage spaces have been
added to the performance rating rules for
baseline building HVAC systems. (G3.1.1)
Exceptions have been added to the
Ventilation rules for baseline HVAC system
requirements. (G3.1.2.6)
Major Changes from
2009-IECC to 2012-IECC





Roof Solar Reflectance and Thermal Emittance
- requirements for low albedo roofing in cooling
climate zones. C402.2.1
Opaque element requirements – more stringent
for some components in some climate zones,
including unheated slabs in CZ4. C402.2.2
Maximum vertical fenestration – reduced from
40% to 30% (with exceptions). C402.3.1
Skylight is required – in some buildings under
certain conditions. Including Lighting Control in
daylight zones under skylights. C402.3.2
Fenestration U-Value/SHGC – more stringent in
some CZ’s. C402.3.3
Major Changes from
2009-IECC to 2012-IECC





Air Leakage and Air Barrier requirements and
Compliance Options – extensive rewrite of the
section. C402.4.1 through C402.4.6
Vestibule – Important clarifications about required
locations. C402.4.7
Equipment Efficiencies - Complete replacement
of section, with more stringent efficiency
requirements. C403.2.1
Energy Recovery Ventilation – Required
in more building types and CZ’s. C403.4
Economizers – More stringent requirements been
added for different CZ’s. C403.3.1 and C403.4
Major Changes from
2009-IECC to 2012-IECC





Piping in Mechanical Systems – More detailed
requirements for pipe sizes, length and locations. C403.2.8
Service Water Heating – Changes to the pipe insulation
(C404.5), hot water system control (C404.6) and Pools
(C404.7).
Lighting Controls – More detail of control strategies,
occupancy sensors, locations including daylight zones and
interior lighting power allowances. C405
Additional Efficiency Package Options – Required for
perspective compliance for the HVAC performance,
Lighting System and On-site renewable Energy. C406
Commissioning – Extensive changes in requirement and
documentation and building sizes. C408
2012-IECC Compliance Path
New Commercial Building shall comply with one of the following:



The requirements of ANSI/ASHRAE/IESNA 90.1-2010
The requirements of Sections C402, C403, C404 and C405.
In addition Commercial Building should comply with at
least one of these sections C406.2, C406.3 or C406.4
The requirements of Sections C402.4, C403.2, C404,
C405.2, C405.3, C405.4, C405.6, C405.7 & C407. The
Building Energy Cost shall be equal to or less than 85% of
the standard reference design building.
Existing Commercial Building shall comply with one of these:

The requirements of ANSI/ASHRAE/IESNA 90.1-2010

The requirements of Sections C402, C403, C404 and C405.
Systems Commissioning

Owner Project Requirements “O P R”

Basis of Design “ B o D”

Commissioning Plan

Construction Document Review

General Commissioning Specification “01 91 13”

Mechanical, Plumbing and Electrical Specification
Sections Commissioning Language (Div 22, 23, 26)
Systems Commissioning

Review Shop Drawing, Submittal and Product Data

Design Verification

Review Testing, Adjusting, Balancing “TAB” Reports.

Prefunctional Performance Testing “P F T”

Functional Performance Testing “F P T”

Training

Operation and Maintenance Manuals “O & M”

Final Commissioning Report.

Seasonal Testing

Post Occupancy Commissioning
2012-IECC Adoption

The following is a list of some cities, counties and
Jurisdictions those has or in the process to adopt it:
Pima County – 2012 IECC

Maricopa County – 2009 IECC

City of Phoenix – 2012 IECC

City of Scottsdale – 2012 IECC

City of Peoria – 2012 IECC

City of Chandler – 2012 IECC

City of Glendale – 2012 IECC

City of Mesa – 2009 IECC (2012 still in review)

City of Tempe – 2009 IECC (2012 still in review)

City of Tucson – 2012 IECC
ASHRAE Standard 90.1-2010
Adoption & Recognition
 International Energy Conservation Codes:
IECC-2012 Commercial Provisions
 USGBC-LEED 2009 (V.3)
The program recognizes ASHRAE 90.1-2007
LEED-V4 require compliance with
ASHRAE 90.1-2010
 International Mechanical Code – By Reference
 NFPA – By Reference
ASHRAE 90.1-2010 & 2012-IECC
References and websites
American Society of Heating, Refrigerating and AirConditioning Engineers
www.ashrae.org
Illuminating Engineering Society of N.A.
www.iesna.org
Pacific Northwest National Laboratory
www.pnnl.gov
U.S. Department of Energy
www.energycodes.gov
International Code Council
www.iccsafe.org
ASHRAE Standard 90.1-2010
References and websites
ASHRAE 90.1-2010 Energy Standard Buildings Except Low Rise
Residential Buildings
ASHRAE 90.1-2010 User Manual
ASHRAE 90.2-2007 Energy-Efficient Design of Loa-Rise Residential
Buildings.
ASHRAE 62.1-2010 Ventilation for Acceptable Indoor Air Quality.
ASHRAE 62.2-2010 Ventilation and Acceptable Indoor Air Quality in
Low-Rise Residential Building.
ASHRAE 189.1-2011 Standard for the Design of High-Performance
Green Buildings.
Advanced Energy Design Guides ‘AEDG’ (30% - 50% Energy Savings)
- Office Buildings
- Warehouse
- Health Care
- Retail Building
- K-12 School
- and many others
ASHRAE/IESNA 90.1-2010
&
2012 I E C C
ASHRAE/IESNA 90.1-2010
&
2012 I E C C
Q
&
A
Jalal Avades
P.E., CEM, CxA, LEED® AP
AGR Consulting, LLC
P: (480) 246-0954
jalal@agrconsultant.com
www.AGRCONSULTANT.com

Building System Commissioning & 3rd Party Verification

Energy Auditing (Commercial and Residential)

Energy Modeling (LEED & ASHRAE 90.1 Compliance)

High Performance Building Design (MEP)

2013 CalGreen Compliance

LEED® Administration & Facilitation

Energy Managements

Training

SRP, APS. TEP and SWG Incentive and Rebate Programs
(including IRS Section 179D)