510-RICR-00-00-8
510-RICR-00-00-8. RISBC-8 Rhode Island Energy Conservation Code (version Amendment, 02/01/2022 to 12/01/2025)
8.1 Authority
The Building Code Standards
Committee, in accordance with the rulemaking authority of R.I. Gen.
Laws §§ 23-27.3-109.1(a) through (c) inclusive, has
formally adopted and promulgated as the Rhode Island State Building
Code, the provisions of the International Energy Conservation Code,
2018 edition, as published by the International Code Council, Inc.
(ICC), together with amendments thereto hereinafter set forth to the
articles and sections of this code.
8.2 Incorporated Materials
A. The provisions of R.I. Gen.
Laws Chapter 23-27.3 establishing administration and enforcement are
hereby incorporated by reference. § 8.3 of this Part (Chapter 1)
immediately follows and is supplemental to the General Laws.
Editorial Note: Code users please note:
1. When purchasing or using
the International Energy Conservation Code 2015 code, please take
note of the particular printing edition. Errata to that printing
edition is available online directly at no charge at
www.iccsafe.org/cs/codes/pages/errata.aspx
or call the office of the State Building Code Commissioner at
401-889-5550 for further information.
2. Printed copies of the
administrative and enforcement provisions of R.I. Gen. Laws Chapter
23-27.3 are available at the Office of the State Building Code
Commission or online at
http://www.rilin.state.ri.us/Statutes/TITLE23/23-27.3/INDEX.HTM .
3. The International Energy
Conservation Code, 2018 Edition, is protected by the copyright that
has been issued to the ICC. As a result, the State Building Code is
not available in complete form to the public in an electronic format.
The State Energy Conservation Code 2021 edition that is referred to
within is contained in a printed volume and is also in an electronic
format that have been published by the ICC under an exclusive
license.
B. Format: These code changes
follow numbering sequence and topics of the INTERNATIONAL ENERGY
CONSERVATION CODE 2018 (first printing). All Provisions of IECC 2018
are retained unless indicated as deleted or revised. Published errata
are available from the ICC website dependent on the printing issue
number and date.
8.3 Chapter 1[CE] ADMINISTRATION
Revise
IECC section C101.1, Title, to read as follows:
C101.1 Title: This part shall
be known as the State Energy Conservation Code SBC-8-2021 hereafter
referred to as "this code.”
Add the following new section
C101.1.1 Referenced Codes.
C101.1.1 Referenced Codes.
The other codes listed in sections C101.4.1 through C101.4.6 and
referenced elsewhere in this code shall be considered part of the
requirements of this code to the prescribed extent of each such
reference.
(1) Electrical. The provisions
of Rhode Island State Electrical Code SBC-5-2021 ( Part
5 of this Subchapter ) shall apply wherever referenced in this
code as the ICC Electrical Code, and shall apply to the installation
of electrical systems, including alterations, repairs, replacement,
equipment, appliances, fixtures, fittings, and appurtenances thereto.
(2) Gas. The provisions of the
Rhode Island State Fuel Gas Code SBC-19-2021 ( Part
19 of this Subchapter ) shall apply wherever referenced in this
code as the International Fuel Gas Code, and shall apply to the
installation of gas piping from the point of delivery, gas appliances
and related accessories as covered in this code. These requirements
apply to gas piping systems extending from the point of delivery to
the inlet connections of appliances and the installation and
operation of residential and commercial gas appliances and related
accessories.
(3) Mechanical. The provisions
of the Rhode Island State Mechanical Code SBC-4-2021 ( Part
4 of this Subchapter ) shall apply wherever referenced in this
code as the International Mechanical Code and shall apply to the
installation, alterations, repairs and replacement of the mechanical
systems, including equipment, appliances, fixtures, fittings and/or
appurtenances, including ventilating, heating, cooling,
air-conditioning and refrigeration systems, incinerators and other
energy-related systems.
(4) Plumbing. The provisions
of Rhode Island State Plumbing Code SBC-3-2021 ( Part
3 of this Subchapter ) shall apply wherever referenced in this
code as the International Plumbing Code, and shall apply to the
installation, alteration, repair and replacement of plumbing systems,
including equipment, appliances, fixtures, fittings and
appurtenances, and where connected to a water or sewage system and
all aspects of a medical gas system.
(5) Property Maintenance. The
provisions of the Rhode Island State Property Maintenance Code
SBC-6-2021 ( Part
6 of this Subchapter ) provides requirements for continued use and
maintenance buildings and property, and of related plumbing,
mechanical, electrical and fire protection systems in existing
residential nonresidential structures.
(6) Fire Prevention Code.
Wherever and whenever provisions of the International Fire Code 2021
editions are referenced, the appropriate Rhode Island Fire Safety
Code ( 450-RICR-00-00-1
through 10 ) requirements shall apply.
(7) Building Code. The
provisions of the Rhode Island State Building Code SBC-1-2021 ( Part
1 of this Subchapter ) shall apply wherever referenced in this
code as the International Building Code, and shall apply to all
matters governing the design and construction of buildings.
(8) Existing Building Code.
The provisions of the State Building Codes SBC-1-2021 ( Part
1 of this Subchapter ) in conjunction with the State
Rehabilitation Code SRC-1 ( Part
20 of this Subchapter ) and the Rhode Island Fire Safety Code
( 450-RICR-00-00-1
through 10 ) shall apply wherever referenced in this code as the
International Existing Building Code.
(9) Swimming Pool and Spa
Code. The Provisions of the Rhode Island Swimming Pool and Spa Code
SBC-14-2021 (Part 14
of this Subchapter) shall apply whenever referenced in this code the
International Swimming Pool and Spa Code and shall apply to matters
governing the design and construction of swimming pools and spas.
(10) Any and all such
references to the various International Code Council family of code
shall be substituted for the appropriate state code as indicated
above.
8.4 [CE] Chapter 2 Definitions
Delete Definition of
Residential Building and substitute the following:
Residential Buildings for
this code include Group R-1, R-2, R-3 and R-4 buildings three (3)
stories of less in height above grade plane. One (1) and Two (2)
Family dwellings and townhouses shall comply with SBC-2, Chapter 11.
8.5 Chapter 3[CE] Climate Zones
Delete
section C301 in its entirety and substitute the following:
Section C301 Climate Zones
C301.1 General Rhode Island
shall be considered as climate zone 5 with the following design
conditions.
Table C301.1 Delete and
substitute the following:
Table
301.1
Exterior
Design Conditions
Value
Value
Climate
zone
Providence
County
All
others
Winter,
design dry-bulb (degree F)
0
5
Summer,
design dry-bulb
87
89
Summer
design wet-bulb
71
73
Degree
days heating
6831
5950
Degree
days cooling
371
811
Delete Figure C301.1 and
Substitute the following: Figure C301.1
Delete without substitution
section C301.2 , C301.3 and C301.4
Delete without substitution
Table C301.3(1)
Delete table C301.3(2) and
substitute the following
TABLE C301.3(2)
RHODE ISLAND CLIMATE ZONE
DEFINITION
Zone
Number
THERMAL
CRITERIA
IP
UNITS
SI
UNITS
5
5400,
HDD65 0 F≤ 7200
3000
< HDD18 °C ≤ 4000
8.6 Chapter 4[CE]
Delete
C401.2 Application. And add the following:
C401.2 Application.
Commercial buildings projects shall comply with the requirements in
sections C403 (Building Envelope Requirements), C403 (Building
Mechanical Systems), C404 (Service Water Heating), C405 (Electrical
Power and Lighting Systems) and C406 (Tenant Spaces, including
C406.1.1) in its entirety. As an alternative, commercial buildings
projects shall comply with the energy cost budget method in
ASHRAE/IESNA 90.1.
Delete without substitute
section C401.2.1 Application to existing building.
Delete Table C402.1.4 and
substitute the following
TABLE C402.1.4
OPAQUE THERMAL ENVELOPE
ASSEMBLY REQUIREMENTS
CLIMATE
ZONE
5
All
other
Group
R
Roofs
Insulation
entirely above deck
U-0.032
U-0.032
Metal
buildings
U-0.035
U-0.035
Attic
and other
U-0.027
U-00021
Walls,
Above Grade
Mass
U-0.090
U-0.80
Metal
building
U-0.052
U-0.052
Metal
framed
U-0.064
U-0.064
Wood
framed and other
U-0.064
U-0.064
Walls,
Below Grade
Below-grade
walls
C-0.119
C-0.119
Floors
Mass
U-0.074
U-0.064
Joist/Framing
U-0.033
U-0.033
Slab-on
Grade Floors
Unheated
slabs f
F-0.79/0.64
F-0.79/0.64
Heated
slabs
F-0.58
F0.58
Opaque
Doors
Swinging
Door
U-0.37
U-0.37
Garage
Door < 14% Glazing
U-0.31
U-0.31
a. Use opaque assembly
U-factors, C-factors, and F-factors from ANSI/ASHRAE/IESNA 90.1
Appendix A shall be permitted, provided the construction complies
with the applicable construction details from ANSI/ASHRAE/IESNA 90.1
Appendix A.
b. When heated slabs are
placed below-grade, below grade walls must meet the F-factor
requirements for heated slabs.
c. The first value is for
perimeter the second value is for full slab insulation
Delete
Table C402.1.3 and substitute the following:
TABLE C402.1.3
OPAQUE THERMAL ENVELOPE
REQUIREMENTS
CLIMATE
ZONE
5
ALL
OTHERS
GROUP
R
Roofs
Insulation
entirely Above deck
R-30ci
R-30ci
Metal
buildings (with R-5 thermal blocks a,b )
(Assembly
descriptions can be found in ANSI/ASHRAE/IESNA Appendix A.)
(When
using R-value compliance method, a thermal spacer block shall be
provided, otherwise use the U-factor compliance method in Table
C402.1.2.)
R-19
+ R-11LS
R-19
+ R-11LS
Attic
and other
R-38
R-49
Walls,
Above Grade
Mass
R-11.4ci
R-13.3
ci
Metal
building c (When using R-value compliance method, a
thermal spacer block shall be provided, otherwise use the U-factor
compliance method in Table C402.1.2.)
R-13
+ R-13ci
R-13
+ R-13ci
Metal
framed
R-13
+ R-7.5ci
R-13
+ R-7.5ci
Wood
framed and other
R-13
+ R-3.8ci or R-20
R-13
+ R-7.5ci or R-20 + R-3.8ci
Walls,
Below Grade
Below
grade wall c
(R-5.7ci
is allowed to be substituted with concrete block walls complying
with ASTM C 90, un-grouted or partially grouted at thirty-two
inches (32”) or less on center vertically and forty-eight
inches (48”) or less on center horizontally, with un-grouted
cores filled with materials having a maximum thermal conductivity
of 0.44 Btu-in/h-f2 F.)
R-7.5ci
R-7.5ci
Floors
Mass
R-10ci
R-12.5ci
Joist/framing
Steel/(wood)
R-30
R-30
Slab-on-Grade
Floors
Unheated
Slabs
R-10
for 24” below
R-10
for 24” below
Heated
slabs
R-15
for 36” below + R5 Full Slab
R-15
for 36” below + R5 Full Slab
Opaque
doors
Swinging
U
–0.37
U
–0.37
Roll-up
or sliding
R
-4.75
R
-4.75
For SI:1 inch = 25.4mm.
Ci = Continuous insulation.
NR = No requirement.
a. Assembly descriptions can
be found in ANSI/ASHRAE/IESNA Appendix A.
b. When using R-value
compliance method, a thermal spacer block shall be provided,
otherwise use the U-factor compliance method in Table C402.1.2.
c. R-5.7ci is allowed to be
substituted with concrete block walls complying with ASTM C 90,
ungrouted or partially grouted at thirty-two inches (32”) or
less on center vertically and forty-eight inches (48”) or less
on center horizontally, with ungrouted cores filled with materials
having a maximum thermal conductivity of 0.44 Btu-in/h-f2 F.
d. Where heated slabs are
below grade, below-grade walls shall comply with the exterior
insulation requirements for heated slabs.
e. Steel floor joist systems
shall be insulated to R-38.
Delete
Table C402.4 and substitute the following
TABLE C402.4
BUILDING ENVELOPE
REQUIREMENTS: FENESTRATION
CLIMATE
ZONE
5
Vertical
fenestration
U-factor
Fixed
fenestration
0.38
Operable
fenestration 0.45
Entrance
door
0.77
SHGC
SHGC
S
E W
PF<0.2
PF 0.2-0.5 0.38 /0.46 / PF> 0.5 0.61
N
PF
<0.2 0.51 PF 0.2-0.5 0.56 PF >.5 0.61
Skylights
U-factor
0.50
SHGC
0.40
Add
Exception: #8
C402.5.7: Exception: #8 Where
a compliant main entrance is already required such as patio doors
intended for seasonal use.
Section
C403.2.1 Delete and Substitute:
C403.2.1 Calculation of
heating and cooling loads. Design loads shall be determined in
accordance with the procedures described in the ANSI/ASHRAE/ACCA
Standard 183.
The design loads shall
account for the building envelope, lighting, ventilation and
occupancy loads based on the projected design.
Heating and cooling loads
shall be adjusted to account for load reductions that are achieved
when energy recovery systems are utilized in the HVAC system.
Alternatively, design loads
shall be determined by an approved equivalent computation procedure,
using the design parameters specified in Chapter 3.
Delete C403.7.1 and replace
with Demand controlled ventilation (Mandatory)
Demand control ventilation
(DCV) shall be provided for spaces larger than five hundred (500)
square feet (46.5 m2) and with an average occupant load of
twenty-five (25) or more people per one thousand (1,000) square feet
(93 m 2 ) of floor area and served by systems with one or
more of the following:
TABLE
C403.7.4(1)
ENERGY RECOVERY REQUIREMENT
CLIMATE
ZONE
PERCENT
(%) OUTDOOR AIR AT FULL DESIGN AIRFLOW RATE
>30%
AND
<40%
>40%
AND <50%
>50%
AND <60%
>60%
AND <70%
>70%
AND <80%
>
80%
DESIGN
SUPPLY FAN AIRFLOW RATE (cfm)
5
>
5500
>4500
>
3500
>
2000
>
1000
>
0
403.11.1
Delete and substitute:
C403.11.1 Duct and plenum
insulation and sealing (Mandatory). All supply and return air ducts
and plenums shall be insulated with a minimum of R-8 insulation when
located in unconditioned spaces and a minimum of R-12 insulation when
located outside the building. When located within a building envelope
assembly, the duct or plenum shall be separated from the building
exterior or unconditioned or exempt spaces by a minimum of R-8
insulation.
Exceptions:
1. When located within
equipment.
2. When the design temperature
difference between the interior and exterior of the duct or plenum
does not exceed fifteen degrees Fahrenheit (15° F) (eight degrees
Celsius (8° C)).
3. All ducts, air handlers and
filter boxes shall be sealed. Joints and seams shall comply with
section 603.9 of the International Mechanical Code.
Delete
Table C403.5.3.3 and replace with the following Table 403.5.3.3
High-Limit
Shutoff Control Setting for Air Economizers b
Device
Type
Required
High Limit
(Economizer
Off When):
Equation
Description
Fixed
dry bulb
T OA >70°F
Outdoor
air temperature exceeds 70°F
Differential
dry bulb
T OA >
T RA
Outdoor
air temperature exceeds return air temperature
Fixed
enthalpy with fixed dry-bulb temperatures
h OA >28Btu/lb a
or
T OA >75°F
Outdoor
air temperature exceeds 28 Btu/lb of dry air a or
Outdoor air temperature exceeds 75°F
Differential
enthalpy with fixed dry-bulb temperature
hOA >
h RA
or
T OA >75°F
Outdoor
air temperature exceeds return air enthalpy or Outdoor air
temperature exceeds 75°F
For
SI: 1 foot = 305 mm, °C = (°F – 32)/1.8, 1 Btu/lb =
2.33 kJ/kg.
a.
At altitudes substantially different than sea level, the fixed
enthalpy limit shall be set to the enthalpy value at seventy-five
degrees Fahrenheit (75° F) and fifty percent (50%) relative
humidity. As an example, at approximately six thousand feet
(6,000’) elevation, the fixed enthalpy limit is
approximately 30.7 Btu/lb.
b.
Devices with selectable setpoints shall be capable of being set to
within two degrees Fahrenheit (2° F) and two (2) Btu/lb of the
setpoint listed.
Delete
without substitute section C407
8.7 Chapter 6[CE]
Reference
Standards
Delete
without substitute:
ASHRAE –2016 ASHRAE
HVAC Systems and Equipment Handbook –2016.
8.8 Chapter 1[RE]
8.8.1 ADMINISTRATION
Revise
IECC section R101.1, Title, to read as follows:
R101.1 Title: These
Regulations shall be known as the State Energy Conservation Code
Regulation SBC-8-2021 hereafter referred to as "this code.”
Add
the following new section R101.1.1 referenced codes:
R101.1.1 Referenced Codes.
The other codes listed in sections R101.4.1 through R101.4.7 and
referenced elsewhere in this code shall be considered part of the
requirements of this code to the prescribed extent of each such
reference.
(1) Electrical. The provisions
of Rhode Island State Electrical Code SBC-5-2021( Part
5 of this Subchapter )
shall apply wherever referenced in this code as the ICC Electrical
Code, and shall apply to the installation of electrical systems,
including alterations, repairs, replacement, equipment, appliances,
fixtures, fittings, and appurtenances thereto.
(2) Gas. The provisions of the
Rhode Island State Fuel Gas Code SBC-19-2021 ( Part
19 of this Subchapter ) shall apply wherever
referenced in this code as the International Fuel Gas Code, and shall
apply to the installation of gas piping from the point of delivery,
gas appliances and related accessories as covered in this code. These
requirements apply to gas piping systems extending from the point of
delivery to the inlet connections of appliances and the installation
and operation of residential and commercial gas appliances and
related accessories.
(3) Mechanical. The provisions
of the Rhode Island State Mechanical Code SBC-4- 2021 ( Part
4 of this Subchapter ) shall apply wherever
referenced in this code as the International Mechanical Code and
shall apply to the installation, alterations, repairs and replacement
of the mechanical systems, including equipment, appliances, fixtures,
fittings and/or appurtenances, including ventilating, heating,
cooling, air-conditioning and refrigeration systems, incinerators and
other energy-related systems.
(4) Plumbing. The provisions
of Rhode Island State Plumbing Code SBC-3-2021( Part
3 of this Subchapter ) shall apply wherever
referenced in this code as the International Plumbing Code, and shall
apply to the installation, alteration, repair and replacement of
plumbing systems, including equipment, appliances, fixtures, fittings
and appurtenances, and where connected to a water or sewage system
and all aspects of a medical gas system.
(5) Property Maintenance. The
provisions of the Rhode Island State Property Maintenance Code
SBC-6-2021 ( Part
6 of this Subchapter ) Provides requirements for
continued use and maintenance buildings and property, and of related
plumbing, mechanical, electrical and fire protection systems in
existing residential nonresidential structures.
(6) Fire Prevention Code.
Wherever and whenever provisions of the International Fire Code 2021
editions are referenced, the appropriate Rhode Island Fire Safety
Code ( 450-RICR-00-00-1
through 10 ) requirements shall apply.
(7) Building Code. The
provisions of the Rhode Island State Building Code SBC-1-2021 ( Part
1 of this Subchapter ) shall apply wherever
referenced in this code as the International Building Code, and shall
apply to all matters governing the design and construction of
buildings.
(8) Existing Building Code.
The provisions of the State Building Codes SBC-1-2021 ( Part
1 of this Subchapter ) in conjunction with the State
Rehabilitation Code SRC-1 ( Part
20 of this Part ) and the Rhode Island Fire Safety
Code ( 450-RICR-00-00-1
through 10 ) shall apply wherever referenced in this
code as the International Existing Building Code.
(9) Swimming Pool and Spa
Code. The Provisions of the Rhode Island Swimming Pool and Spa Code
SBC-14-2021 (Part 14
of this Subchapter) shall apply whenever referenced in this code the
International Swimming Pool and Spa Code and shall apply to matters
governing the design and construction of swimming pools and spas.
(10) Any and all such
references to the various International Code Council family of code
shall be substituted for the appropriate State code as indicated
above.
8.9 [RE] Chapter 2 Definitions
Delete Definition of
Residential Building and substitute the following
Residential Buildings for
this code include Group R-1, R-2, R-3 and R-4 buildings three (3)
stories of less in height above grade plane. One (1) and Two (2)
Family dwellings and townhouses shall comply with SBC-2, Chapter 11.
8.10 Chapter 3[RE] Climate Zones
Delete
section R301 and substitute the following.
Section C301 Climate Zones
R301.1 General Rhode Island
shall be considered as climate zone 5 with the following design
conditions.
Table R301.1 Delete and
substitute the following:
Table
R301.1
Exterior
Design Conditions
Value
Value
Climate
zone
Providence
County
All
others
Winter,
design dry-bulb (degree F)
0
5
Summer,
design dry-bulb
87
89
Summer
design wet-bulb
71
73
Degree
days heating
6831
5950
Degree
days cooling
371
811
Delete without substitute
section R301.2 and R301.3
Delete Table R301.3(1) without
substitute
Delete Table R301.3(2) without
substitute
Delete Figure R301.1 and
substitute the following: figure R301.1
8.11 Chapter
4 [RE]
R401.2
Delete section R401.2 and substitute the following:
R401.2 Compliance Methods
Compliance shall be
demonstrated by either:
1. Meeting the requirements of
the Rhode Island Energy Conservation Code SBC-8-2021(this Part).
2. Meeting the requirements of
this Chapter using the criteria for climate zone 5 from figure N
1102A or table 1102.1.2.
3. Compliance submission of
Res-Check for Zone 5 & Rhode Island Energy Conservation Code
Residential Provisions.
Add the following to R401.3
Certificate:
Figure
R401.3
A
certificate similar to this shall be attached to or near the
electrical panel board
ENERGY
CERTIFICATE
Street
Address
City/Town
Predominant
Values
R-Value
Ceiling/Roof
R-
Value Walls
R-
Value Ducts (outside conditioned space)
U
Factor Fenestration
SHGC
Fenestration
Gas
Fired Un-Vented Room Heater
Baseboard
Electric Heater
Electric
Furnace
U
Factor Skylight/SHGC
AFUE
Value Boiler/Furnace
Efficiency
and type of heating equipment
Efficiency
and type of cooling equipment
Efficiency
and type of service water heater
Contractor
or Design Professional
Address
Registration
Duct
Test Results
Envelope
Test Results ACH
Date
Signature
Delete
and substitute Table R402.1.2:
TABLE
R402.1.2
INSULATION
AND FENESTRATION REQUIREMENTS BY COMPONENT a
CLIMATE
ZONE
FENESTRATION
U-FACTOR
b
SKYLIGHT
b
U-FACTOR
GLAZED
FERNESTRATION SHGC b
CEILING
R-VALUE
i
WOOD
FRAME WALL R-VALUE g
MASS
WALL
R-VALUE
FLOOR
R-VALUE
BASEMENT
C
WALL
R-VALUE
SLAB
d
R-VALUE
& DEPTH
CRAWL
SPACE c WALL
R-VALUE
5
0.30
0.55
NR
49
20
or
13+5
f
13/17
30
e
15/19
R-10
for
2 ft.
15/19
For SI: 1 foot = 304.8 mm.
a. R-values are minimums
U-factors and SHGC are maximums. R-19 batts compressed into a nominal
two by six (2 × 6) framing cavity such that the R- value is
reduced by R-1 or more shall be marked with the compressed batt
R-value in addition to the full thickness R-value.
b. The fenestration U-factor
column excludes skylights. The SHGC column applies to all glazed
fenestration.
c. “10/13” means
R-10 continuous insulated sheathing on the interior or exterior of
the home or R-13 cavity insulation at the interior of the basement
wall.
d. R-5 shall be added to the
entire slab and the required slab edge R-values for heated slabs
e. Or insulation sufficient to
fill the framing cavity, R-19 minimum.
f. “13+5” means
R-13 cavity insulation plus R-5 insulated sheathing. If structural
sheathing covers twenty-five percent (25%) or less of the exterior,
insulating sheathing is not required where structural sheathing is
used. If structural sheathing covers more than twenty-five percent
(25%) of exterior, structural sheathing shall be supplemented with
insulated sheathing of at least R-2.
g. The second R-value applies
when more than half the insulation is on the interior of the mass
wall.
Delete
and substitute TABLE R402.1. 4 EQUIVALENT U-FACTORS, a
CLIMATE
ZONE
FENESTRATION
U-FACTOR
SKYLIGHT
U-FACTOR
CEILING
U-FACTOR
FRAME
WALL U-FACTOR
MASS
WALL U-FACTORb
FLOOR
U-FACTOR
BASEMENT
WALL U-FACTOR
CRAWL
SPACE WALL U-FACTOR
5
0.30
0.55
0.026
0.060
0.082
0.033
0.050
0.055
R402.1.5
Total UA alternative delete and substitute:
R402.1.5 Total UA
alternative. If the total building thermal envelope UA (sum of
U-factor times assembly area) is less than or equal to the total UA
resulting from using the U-factors in Table R402.1.3 (multiplied by
the same assembly area as in the proposed building), the building
shall be considered in compliance with Table R402.1.1. The UA
calculation shall include the thermal bridge effects of framing
materials. The UA calculation shall include the thermal bridging
effects of framing materials. The SHGC requirements shall be met in
addition to UA compliance
R402.4.1.2 Delete and
substitute the following:
R402.4.1.2 Testing. The
building or dwelling unit shall be tested, and the air leakage rate
shall be verified. Testing shall be conducted with a blower door at a
pressure of two tenths of one inch (0.2”) (fifty (50) Pascals).
Maximum air change rates per hour: 5. Testing shall be conducted by
an approved third (3 rd ) party, where required by the
building official. A written report of the results of the test shall
be signed by the party conducting the test and provided to the
building official. Testing shall be performed at any time after
creation of all penetrations of the building thermal envelope.
During testing:
1. Exterior windows and doors,
fireplace and stove doors shall be closed, but not sealed, beyond the
intended weather-stripping or other infiltration control measures;
2. Dampers including exhaust,
intake, makeup air, backdraft and flue dampers shall be closed, but
not sealed beyond intended infiltration control measures;
3. Interior doors, if
installed at the time of the test, shall be open.
4. Exterior doors for
continuous ventilation systems and heat recovery ventilators shall be
closed and sealed.
5. Heating and cooling
systems, if installed at the time of the test, shall be turned off;
and
6. Supply and return
registers, if installed at the time of the test, shall be fully open.
8.12 Chapter 6[RE]
Reference Standards
Delete without substitute
ASHRAE –2017 ASHRAE
Handbook of Fundamentals.