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Issue 133 January - March 2021
BLUEPRINT
CALIFORNIA ENERGY COMMISSION
EFFICIENCY DIVISION
IN THIS ISSUE Snow Load and PV high snow loads. Building permit
The 2019 Building Energy applicants must address the issues
• Snow Load and PV under their control to meet PV
Efficiency Standards (Energy Code)
• New Fact Sheets on ORC includes solar photovoltaic (PV) system high snow load structural
• Virtual Compliance Assistant system requirements for all newly requirements. These include the
for NRCC Forms constructed low-rise residential specific characteristics of the PV
buildings per Section 150.1(c)14. modules, method of installation,
• Updated Lighting Videos
The California Building Code (CBC, roof slope and design, and PV
• Q&A module location.
Title 24, Part 2) and the California
° Accessory Dwelling Unit Residential Code (CRC, Title 24, Steps that can be taken to
(ADU) Scenarios Part 2.5) require PV systems, meet high snow load structural
° Kitchen Range Hood HERS including modules, supports, and requirements include the following:
Verification for Alterations attachments, to meet the design • Use three-rail mounting or other
and installation requirements installation practices to make PV
for high snow loads in American modules resilient to high snow
Society of Civil Engineers (ASCE) loads.
Standard 7-16. Simultaneous • Design roof slopes and PV
compliance with the code module locations to maximize
requirements of the Energy Code, the roof slope and allow
CBC, and CRC should be met, when the PV system to qualify as
feasible, in all newly constructed unobstructed slippery surfaces.
low-rise residential buildings. • Modify roof designs, roof
The California Energy Commission locations, or PV module mounting
(CEC) has confirmed that the solar to avoid unnecessary snow
PV system requirement does not accumulation or snow sliding off
apply to buildings that cannot the roof to undesirable locations
meet the PV system structural on the site.
requirements in the CBC and CRC Local enforcement agencies should
due to high snow loads. ensure that practical approaches
Site-specific conditions will are taken to design homes that
determine whether a PV system facilitate the installation of PV 1
can be installed safely to meet systems whenever possible.
For additional help with
Experienced designers in high snow
Virtual Compliance Assistant the 2019 Energy Code
load areas have demonstrated that
for NRCC Forms see Energy Code Ace's
PV systems can be successfully
online offerings of trainings,
installed with attention to all ASCE Announcing the Virtual Compliance
tools, and resources.
Standard 7-16 requirements. Assistant tool provided by
Local enforcement agencies are Energy Code Ace. This tool fills
encouraged to provide technical in the Nonresidential Certificate
assistance to ensure that designs of of Compliance (NRCC) forms by
roofs and PV systems are modified directing users to answer a series of
to meet the demanding conditions simple and direct questions about
of high snow loads. the project. The tool then confirms Updated Lighting Videos
that the project complies with the Four newly updated 2019 Energy
The CEC recognizes that regardless
Energy Code. The tool is great for Code lighting videos have been
of best efforts to install PV systems,
beginners and experts. It gives added to the ORC Lighting
building sites that receive an
users the ability to work efficiently webpage. These videos are
extreme amount of snow can have
as a design project team. Some of designed to increase knowledge
design snow load requirements that
the special features include: and implementation of code-
are greater than what PV modules
are rated to withstand based on • One form per building component compliant lighting in nonresidential
ASCE Standard 7-16. Additional • Simple questions and residential buildings.
information can be found in the CEC • Tips and tricks Nonresidential
staff report on the Town of Truckee • Built-in compliance logic • Introduction to Lighting Control
petition to the solar PV requirement. • Guides users to enter correct Systems
information • Introduction to Lighting Controls
New Fact Sheets on ORC • Requires only applicable tables Acceptance Testing
New 2019 Energy Code fact sheets • Energy Code section references • Introduction to Lighting
are available on the following Online • Save forms progress Alterations
Resource Center (ORC) web pages: • Assign tasks to responsible
Residential
person
Solar • Overview of High Efficacy
• Solar PV System All 2019 NRCC forms are available Lighting
Overview with the Virtual Compliance
The videos were developed by
• Healthcare Exceptions Summary Assistant:
the California Lighting Technology
Covered Processes • Commissioning
Center (CLTC) at UC Davis with
• Commercial Kitchens • Domestic Water Heating
funding from Southern California
• Commercial Refrigeration • Envelope
Edison (SCE), in collaboration with
• Compressed Air Systems • Electrical Power Distribution
RMS Energy Consulting, LLC, and
• Computer Rooms & Data Centers • Indoor Lighting
the CEC. The videos links will open
• Elevators • Mechanical
in the CLTC website.
• Enclosed Parking Garages • Outdoor Lighting
• Escalators & Moving Walkways • Process Systems
• Laboratory & Factory Exhaust • Sign Lighting
• Process Boilers
• Refrigerated Warehouses 2
Q&A
Accessory Dwelling Unit
(ADU) Scenarios
When building an ADU on top of
an existing detached garage, is
this an addition?
Yes. Sharing a common ceiling/
floor of an existing structure is
considered an addition, regardless Figure 1: ADU over detached garage
if the existing structure is an
unconditioned space. Figure 1.
Is it still an addition if the new
ADU is built side-by-side with the
existing garage?
Yes. A new ADU that shares a
common wall with an existing
garage is an addition. Figure 2.
Figure 2: ADU adjacent to detached garage
When a newly built ADU is
attached to the existing home
by a breezeway, or covered
walkway, is this an addition?
No. This is a newly constructed
building. It does not share a
common wall or common (or
adjacent) ceiling/floor. Figure 3.
When converting existing
conditioned space, like a Figure 3: ADU attached with breezeway
conditioned basement, into an
ADU or junior ADU, is this an
addition?
No. This is an alteration. Energy Some examples of alterations that lighting upgrades, changes to
Code requirements may be triggered are covered by the Energy Code the building envelope, etc.
if altering a component which is are newly installed water heaters For additional ADU scenarios,
covered by the Energy Code. or mini-split HVAC systems, see Blueprint 122.
The CEC welcomes feedback on Blueprint. 3
Please contact the editor at: Title24@energy.ca.gov.
Kitchen Range Hood FOR MORE INFORMATION
HERS Verification for
Alterations Online Resource Center (ORC):
www.energy.ca.gov/orc
Does a kitchen-only remodel
require HERS verification of the Home Energy
kitchen range hood? Rating System (HERS):
www.energy.ca.gov/HERS
Yes. Kitchens with range hoods
which previously met the local Acceptance Test Technician
exhaust requirements of Section Certification Provider Program
150.0(o)2B must continue to meet (ATTCP): www.energy.ca.gov/ATTCP
those requirements post-alteration.
2019 Approved
This requires HERS verification of
Compliance Software:
the newly installed kitchen range
https://www.energy.ca.gov/programs-
hood.
and-topics/programs/building-
energy-efficiency-standards/2019-
building-energy-efficiency-2
EDITOR
Amie Brousseau
SPECIAL THANKS
Christine Collopy Ronnie Raxter
Che Geiser Michael J. Sokol
Alexis Markstrum Peter Strait
Cheng Moua Will Vicent
Chris Olvera Lorraine White
Javier Perez RJ Wichert
Building Gavin Newsom . . . . . . . . . . . . . Governor
Standards David Hochschild . . . . . . . . . . . Chair CALIFORNIA
Office ENERGY
Karen Douglas, J.D. . . . . . . . . . Commissioner COMMISSION
1516 9th St, MS 37 J. Andrew McAllister, Ph.D. . . Commissioner
CEC-400-2021-004
Sacramento, CA Patricia Monahan. . . . . . . . . . . Commissioner
95814 Siva Gunda . . . . . . . . . . . . . . . . Commissioner
(916) 654-4147 Drew Bohan . . . . . . . . . . . . . . . Executive DirectorYou can also read
