REVIEWED BLD BLD2021-0244+ICC_EVAL_REPORT+2.11.2021_12.03.44_PM+2043625ICC-ES Evaluation Report ESR-3403
Reissued November 2020
This report is subject to renewal November 2021.
www.1cc-es.orcl I (800) 423-6587 1 (562) 699-0543 R Subsidiary of the International Code Councils'
DIVISION: 03 00 00—CONCRETE
Section: 03 01 00—Maintenance of Concrete
Section 03 01 30—Maintenance of Cast -in -Place
Concrete
DIVISION: 04 00 00—MASONRY
Section 04 01 00—Maintenance of Masonry
Section 04 01 20—Maintenance of Unit Masonry
REPORT HOLDER:
SIMPSON STRONG -TIE COMPANY, INC.
EVALUATION SUBJECT:
SIMPSON STRONG -TIE COMPOSITE
STRENGTHENING SYSTEMS (CSSs)
1.0 EVALUATION SCOPE
Compliance with the following codes:
■ 2018, 2015, 2012, 2009 and 2006 International Building
Code'' [IBC]
■ 2018, 2015, 2012, 2009 and 2006 International
Residential Codes (IRC)
For evaluation for compliance with codes adopted by the
Los Angeles Department of Building and Safety (LADBS),
see ESR-3403 LABC and LARC Surmlement.
Properties evaluated:
■ Structural
■ Durability
■ Interior finish
■ Toxicity
■ Fire resistance
2.0 USES
The Simpson Strong -Tie Composite Strengthening Systems
(CSSs) are used to strengthen normalweight reinforced
concrete and masonry structural elements as alternatives to
those systems described in the IBC. For structures
regulated under the IRC, the Simpson Strong -Tie
Composite Strengthening Systems (CSSs) may be used
where an engineering design is submitted in accordance
with Section R301.1.3 and where approved by the building
official in accordance with Section R104.11. The CSS-
CUCF and CSS-CUGF systems are also used as an interior
finish.
3.0 DESCRIPTION
3.1 General:
The Composite Strengthening Systems (CSSs) are
externally bonded fiber -reinforced polymer (FRP) systems
applied to concrete and masonry structural elements. CSSs
consist of carbon fabrics or glass fabrics combined with
epoxy resin to create the FRP composite systems, or a
carbon fiber precured laminate applied with an epoxy paste.
3.2 Materials:
3.2.1 General: All material must conform to the approved
specifications outlined in the Simpson Strong -Tie CSS
Quality Control Manual. dated June 18. 2015, Revision 0.
3.2.2 CSS Fabrics: The CSS fabrics are composed of
carbon or glass fibers. CSS-CUCF11 and CSS-CUCF22
unidirectional carbon fabrics come in either 12-inch x
300-foot (305 mm x 91.4 m) or 24-inch x 150-foot
(610 mm x 45.7 m) rolls. CSS-CUCF44 unidirectional
carbon fabric comes in either 12-inch x 150-foot
(305 mm x 45.7 m) or 24-inch x 75-foot (610 mm x 22.9 m)
rolls. CSS-CUGF27 unidirectional glass fabric comes in 25-
inch or 50-inch x 150-foot (635 mm or 1,270 mm x
100 m) rolls. CSS-CBGF424 bidirectional glass fabric
comes in 25-inch or 50-inch x 302-foot (635 mm or
1,270 mm x 92 m) rolls. Material properties vary with fiber
type designation.
3.2.3 CSS-ES Epoxy Saturant: The CSS-ES epoxy
saturant and primer is a two -component. ambient cure.
epoxy resin system used to prime substrates and saturate
CSS fabrics. It is available in 3 gallon (11.4 L) kits.
Component A is packaged with 2 gallons (7.6 L) in a
5-gallon (18.9 L) bucket to allow enough room for mixing full
kits of epoxy. Component B is packaged in 1-gallon (3.8 L)
containers. Mixing ratio is two -to -one for components A and
B, respectively.
3.2.4 CSS-CUCL Precured Laminates: The CSS-CUCL
unidirectional carbon laminates are comprised of carbon
fibers, precured in an epoxy resin. CSS precured laminates
come in 0.047 inch (1.2 mm), 0.055 inch (1.4 mm) and 0.110
inch (2.8mm) thicknesses and various widths ranging from
0.39 inch to 5.90 inches (10 mm to 150 mm), and a standard
length of 492 feet (150 m).
3.2.5 CSS-EP Epoxy Paste: The CSS-EP epoxy paste is
a two -component, epoxy paste system used to fill and
transition irregular substrates and adhere CSS-CUCL
precured laminates. CSS-EP is available in 3-gallon
ICC-ES Evaluation Reports are not to be construed as representing aesthetics or any other attributes not speci,Rcalb? addressed, nor are they to be construed
as an endorsement gfthe subject of the report or a recommendation for xis use There is no xrtrranty by ICC Evaluation Service, LLC, express or impiied, as
to am finding or other matter in this report, or as to ant prcduct corered by the report.
Copyright 0 2020 ICC Evaluation Service, LLC. All rights reserved.
i
Page 1 of 6
ESR-3403 I Most Widely Accepted and Trusted Page 2 of 6
(11.4 Q Kits. Components A and B are packaged in
1-gallon (3.8 Q containers and entire kits are packaged in
one carton. Mixing ratio is two -to -one for components A and
B, respectively.
3.2.6 CSS Composites:
3.2.6.1 CSS-CUCF Composites: In the primary direction
(0`), the carbon fiber composites have a minimum ultimate
tensile strength of 128,000 psi (880 MPa), a minimum
tensile modulus of 14,200 ksi (97 MPa) and a corresponding
elongation of 0.9 percent. Cured composites have a
thickness of 0.02 inch (0.5 mm),
0.04 inch (1 mm) and 0.08 inch (2 mm) for CSS-CUCF11,
CSS-CUCF22 and CSS-CUCF44, respectively.
3.2.6.2 CSS-CUGF Composite: In the primary direction
(0'), the glass -fiber composite has a minimum ultimate
tensile strength of 56,000 psi (386 MPa), a minimum tensile
modulus of 3,300 ksi (22 MPa) and a corresponding
elongation of 1.7 percent. Cured composite has the
minimum thickness of 0.05-inch (1.3 mm.)
3.2.6.3 CSS-CBGF Composite: In both directions
(±45° from the roll length), the glass fiber composite has a
minimum ultimate tensile strength of 40,000 psi
(275 MPa), a minimum tensile modulus of 2,900 ksi
(20 MPa) and a corresponding elongation of 1.4 percent.
Cured composite has the minimum thickness of 0.034 inch
(0.86 mm.).
3.2.6.4 CSS-CUCL Laminate Composite: In the primary
direction, the precured laminate has a minimum ultimate
tensile strength of 181,000 psi (1,250 MPa), a minimum
tensile modulus of 23,600 ksi (163 MPa) and a
corresponding elongation of 0.77 percent. The thickness of
the precured laminate is 0.047 inch (1.2 mm), 0.055 inch
(1.4 mm) and 0.110 inch (2.8mm).
3.2.7 FX-207 Finish Coating: The Simpson Strong -Tie
proprietary FX-207 finish coating is a two -component,
polymer -modified cementitious coating. Component A
comes in a 1-gallon (3.8 Q container and Component B
comes in a 40-pound (18 kg) bag. Pot life is 30 minutes.
3.2.8 GCP Z-106 HY Finish Coating: The GCP Applied
Technologies Monokote Z-106 HY finish coating is a
Portland cement based cementitious fireproofing coating.
This product is available in 49 lb (22.2 kg) bags.
3.2.9 Firebond Concentrate Primer: The Firebond
Concentrate Primer is a bonding agent used to bond GCP
Applied Technologies Monokote Z-106 HY to the substrate
or installed composite. This primer is available in either
5 gal (19 L) or 55 gal (208.2 L) containers.
3.2.10 Storage Recommendations: Epoxies, coating,
fabrics and precured laminates should be stored in
temperatures between 45°F and 95°F (7°C and 35°C) with
no exposure to moisture. Shelf life is one year for coating,
two years for epoxies and ten years for fabrics and precured
laminates.
4.0 DESIGN AND INSTALLATION
4.1 Design:
4.1.1 General: Design of the Composite Strengthening
Systems must be based on required tensile loads at
designated concrete strain values. The strength design
requirements for concrete and masonry must be in
accordance with Chapters 19 and 21 of the IBC and all
applicable requirements in Section 4.1 of this evaluation
report. The registered design professional must be
responsible for determining, through analysis, the strengths
and demands of the structural elements to be strengthened
with CSS composites, subject to the approval of the building
official.
4.1.2 Composite Design Properties: Composite
structural design properties are found in the CSS Design
Manual, dated April 16, 2019.
4.1.3 Design Details: Structural design provisions for the
composite system are based on test results and principles
of structural analysis as set forth in Section 1604.4 of the
IBC. Bases of design include strain compatibility, load
equilibrium and limit states. All designs must follow
procedures as detailed in the IBC; in the ICC-ES
Acceptance Criteria for Concrete and Reinforced and
Unreinforced Masonry Strengthening Using Externally
Bonded Fiber -reinforced Polymer (FRP) Composite
Systems (AC125), dated August 2014 (editorially revised
November 2017), and applicable procedures detailed in the
CSS Design Manual.
4.1.4 Design Strength: Design strengths must be taken
as the nominal strength, computed in accordance with
Section 4.1.3 of this report, multiplied by strength reduction
factors provided in Section 21.2 of ACI 318-14 (2018 and
2015 IBC), Section 9.3 of ACI 318-11 (2012 IBC) or
ACI 318-06 (2009 IBC) or ACI 318-05 (2006 IBC), and
modified by AC125, as applicable (for concrete), and
Chapter 21 of the IBC (TMS 402) or Chapter 19, as
applicable.
4.1.5 Load Combinations: The load combinations used in
design must comply with Section 1605.2 of the IBC, as
applicable. Strength reduction factors must comply with
Chapter 19 (ACI 318) or Chapter 21 (TMS 402 of the IBC),
as applicable.
4.1.6 Columns:
4.1.6.E Potential Applications: CSS-CUCF, CSS-CUGF
and CSS-CBGF Composite Strengthening Systems are
applied to circular or rectangular reinforced concrete
columns to enhance their axial, flexural and shear strengths,
and ductility.
4.1.6.2 Structural Design Requirements: Concrete
column design must comply with the CSS Design Manual
and with Chapter 19 of the IBC.
4.1.7 Beams and Slabs:
4.1.7.1 Potential Applications: CSS-CUCF, CSS-CUGF
and CSS-CUCL Composite Strengthening Systems are
applied to beams to enhance their ductility and flexural
strengths. The CSS-CUCF Composite System applied to
beams is also used to enhance the beam shear strength.
The beam shear strengthening is for gravity load or wind
load resistance only, unless the beam is fully wrapped
on four side surfaces, or the behavior of the beam
strengthened by the CSS-CUCF Composite System for
shear strengthening is governed by its flexural strength and
not shear strength. The CSS-CUCF, CSS-CUGF and CSS-
CUCL Composite Strengthening Systems are also applied
to slabs to enhance their out of plane flexural strength and
their In -plane shear strength.
4.1.7.2 Structural Design Requirements: Concrete
beam design must comply with the CSS Design Manual and
with Chapter 19 of the IBC.
4.1.8 Walls:
4.1.8.E Potential Applications: CSS-CUCF and
CSS-CUCL Composite Strengthening Systems are applied
to reinforced concrete walls to enhance their
out -of -plane flexural strength and in -plane shear strength.
CSS-CUGF Composite Strengthening Systems are applied
to reinforced masonry walls to enhance their out -of -plane
ESR-3403 I Most Widely Accepted and Trusted Page 3 of 6
flexural strengths; and to unreinforced masonry walls to
enhance their in -plane shear strengths. .
4.1.8.2 Structural Design Requirements: Concrete
design must comply with the CSS Design Manual and
Chapter 19 of the IBC, as applicable. Masonry design must
comply with the CSS Design Manual and Chapter 21 of the
{BC, as applicable.
4.1.9 Wall -to -Floor joints:
4.1.9.1 Potential Applications: CBGF Composite
Strengthening Systems are applied to concrete
wall -to -floor joints to enhance their shear strength.
4.1.9.2 Structural Design Requirements: Concrete
design must comply with the CSS Design Manual and
Chapter 19 of the IBC, as applicable.
4.1.10 Bond Strength: Where the performance of the CSS
composite systems defined in this report depends on bond,
the bond strength of CSS Composite material to concrete
must not be less than 200 psi (1378 kPa). Bond testing must
exhibit failure in the concrete substrate. Testing in
accordance with ASTM D7234 or D7522 may be used to
estimate the bond strength of bond -critical installations.
4.2 Installation:
Simpson Strong -Tie CSS Composite Strengthening
Systems installations must be performed by approved
applicators specific to this composite system. Installation
recommendations are detailed in the approved applicator
training program and Section 2.0 of the Quality Control
Manual dated June 18, 2015, Revision 0.
4.2.1 Saturation: CSS fabrics and saturating epoxy of the
CSS Composites are combined in accordance with
published literature and applicator training program using a
calibrated mechanical saturator or manual saturation
methods. CSS precured laminates come to the site in
precured form ready to apply to substrate once cut to
required length and cleaned.
4.2.2 Application: Manual methods must be used to apply
saturated CSS Composite fabrics to the substrate prior to
epoxy cure. Surface preparation, fiber orientation and
removal of bubbles/voids must be done in accordance with
published literature and approved applicator training
program. For precured laminates, CSS-EP paste must
be applied to the laminate with paste thickness of
approximately 3 mm (118 in.).
4.2.3 Finishing: Composite Strengthening Systems are
typically painted or coated for aesthetic, fire -resistance or
environmental durability considerations.
4.2.3.1 Health Effects Coating: The CSS-ES epoxy
saturant and CSS-EP are formulated for potable water
contact and comply with ANSIINSF 61 requirements, as
referenced by Section 605 of the International Plumbing
Code (IPC). CSS-ES epoxy saturant must be applied
over the CSS composites to a maximum thickness of
10 wet mills (0.025 mm). CSS-EP epoxy paste must be
applied over the installed CSS precured laminates to a
maximum thickness of 40 wet mils (0.1 mm). All surfaces
must be clean, dry and free of contaminants. Final cure Is
72 hours at 70OF (21 °C).
4.2.3.2 Flame Spread / Smoke Developed:
CSS-CUCF= and CSS-CUGF composite systems coated
with FX-207 finish coating yields a Class 1 and Class A
flame -spread classification and smoke -developed
classification in compliance with the IBC. The CSS-CUCF
composite is limited to a maximum thickness of 0.8-inch
(20 mm) of carbon fabric (maximum 10 layers of CSS-
CUCF44, 20 layers of CSS-CUCF22 and 30 layers of CSS-
CUCF11). The CSS-CUGF composite is limited to a
maximum thickness of 0.3-inch (7.8 mm) of glass fabric
(maximum 6 layers of CSS-CUGF27). Coating must be
applied minimum 40 mils at a rate of 0.4 Ibslft2 (2 kglm2).
4.3 Fire -resistance rating:
4.3.1 Roller or Spray -applied Fire-resistant Material:
The use of FX-207 finish coating provides up to a four-hour
fire -resistance rating in accordance with ASTM El 19 when
loaded up to 72 percent of ultimate design load for the
following structural systems. The two -component coating is
applied over the composite system and concrete in
accordance with Simpson Strong -Tie installation
instructions. The FX-207 coating must be applied to
concrete T-beams with the following properties: 12-inch
(305 mm) wide web thickness, 10-inch (254 mm) deep web
depth, 6-inch (152 mm) flange thickness, 48-inch
(1219 mm) flange width. a 28-day concrete compressive
strength between 3,500 psi (24 MPa) and 5,000 psi
(34 MPa), reinforced with 2 No. 5 bottom longitudinal
reinforcing steel in the web, flange short direction transverse
reinforcement is No.3 at 6-inch o/c top and bottom. top
longitudinal reinforcement is No. 3 at 6-inch olc, and stirrup
reinforcement No. 3 at 6-inch o/c with minimum 1.75 inch
(44 mm) cover depth between reinforcement and concrete
surface. The concrete surface to receive fabric must be
primed with CSS-ES. CSS-CUGF and CSS-CUGF fabrics
must be saturated with CSS-ES. The saturated CSS-CUCF
fabric must be applied to the bottom of the web and the
saturated CSS-CUGF fabric must be applied to the web at
the ends of the T-beam in a U-wrap configuration. FX-207
coating is applied over the lightly sanded installed fabrics
and CSS-ES coated concrete at an application rate of
0.4 Ibs/ft2 (2 kglm2). Other assembly configurations are
beyond the scope of this report.
4.3.2 Spray -applied Fire-resistant Material: The use of
GCP Applied Technologies system provides up to a
four-hour fire -resistance rating in accordance with ASTM
El 19 when loaded up to 72 percent of ultimate design load
for the following structural systems. The coating system is
applied over the composite system and concrete in
accordance with Simpson Strong -Tie installation
instructions. The coating system must be applied to
concrete T-beams with the following properties: 12-inch
(305 mm) wide web thickness, 10-inch (254 mm) deep web
depth, 6-inch (152 mm) flange thickness, 48-inch
(1219 mm) flange width. a 28-day concrete compressive
strength between 3,500 psi (24 MPa) and 5,000 psi
(34 MPa), reinforced with 2 No. 5 bottom longitudinal
reinforcing steel in the web, flange short direction transverse
reinforcement No. 3 at 6-inch olc top and bottom, top
longitudinal reinforcement No. 3 at 6-inch o/c, and stirrup
reinforcement No. 3 at 6-inch o/c with minimum 1.75 inch
(44 mm) cover depth between reinforcement and concrete
surface. The concrete surface to receive fabric must be
primed with CSS-ES. CSS-CUCF and CSS-CUGF fabrics
must be saturated with CSS-ES. The saturated CSS-CUCF
fabric must be applied to the bottom of the web and the
saturated CSS-CUGF fabric must be applied to the web at
the ends of the T-beam In a U-wrap configuration. The
coating system is applied over the lightly sanded installed
fabrics and CSS-ES coated concrete by first priming the
prepared surfaces with Firebond Concentrate Primer and
then spray -applying the GCP Z-106 HY material at a
minimum average thickness of 1/2-inch (13 mm) and a
minimum average dry density of 23 Ibs1W (368 kglm3). Other
assembly configurations are beyond the scope of this report.
ESR-3403 I Most Widely Accepted and Trusted Page 4 of 6
4.4 Special Inspection:
Special inspection during the installation of the system must
be in accordance with the ICC-ES Acceptance Criteria for
Inspection and Verification of Concrete and Unreinforced
Masonry Strengthening Using Fiber -reinforced Polymer
(FRP) Composite Systems (AC178), dated October 2017
(editorially revised December 2017). A statement of special
inspection must be prepared in accordance with Sections
1704.3 of the 2018, 2015, and 2012 IBC or Section 1705 of
the 2009 IBC and 2006 IBC. Inspection must also comply
with Sections 1704 and 1705 of the 2018, 2015, and 2012
IBC, Section 1704 through 1707 of the 2009 and 2006 IBC
5.0 CONDITIONS OF USE
The Simpson Strong -Tie Composite Strengthening Systems
(CSSs) described in this report comply with, or are suitable
alternatives to what is specified in, those codes listed in
Section 1.00 of this report, subject to the following conditions:
5.1 Design and installation of the structural systems
recognized in this report must be in accordance with
this report, the CSS Quality Control Manual dated June
18, 2015, the CSS Design Manual dated
April 16, 2019, and the 113C, or IRC, as applicable.
5.2 Copies of the Simpson Strong -Tie Composite
Strengthening Systems installation instructions and the
CSS Design Manual must be submitted to the code
official for each project where these products are used.
5.3 Complete construction documents, including plans and
calculations verifying compliance with this report, must
be submitted to the code official for each project at the
time of permit application. The construction documents
must be prepared and sealed by a registered design
professional where required by the statutes of the
jurisdiction in which the project is to be constructed.
5.4 Fire -resistance rating of the CSS composite
strengthening systems must be in accordance with
Section 4_3 of this report.
5.5 Special Inspection for application of the Composite
Strengthening Systems products must be provided in
accordance with Section 4.4 of this report.
5.6 Application of the Composite Strengthening Systems
products to concrete at a fabricator's facility must be by
an approved fabricator complying with Chapter 17 of
the IBC, or at a jobsite with continuous special
inspections in accordance with Chapter 17 of the IBC
and Section 4.4 of this report.
5.7 Multi -layer applications and lap splices of CSS-CULL
precu red laminates are outside the scope of this report.
Composite Strengthening Systems (CSSs) must be
manufactured by Simpson Strong -Tie Company, Inc.
under a quality -control program with inspections by
]CC -ES.
6.0 EVIDENCE SUBMITTED
Data in accordance with the ICC-ES Acceptance Criteria for
Concrete and Reinforced and Unreinforced Masonry
Strengthening using Externally Bonded Fiber -Reinforced
Polymer (FRP) Composite Systems (AC125), dated
October 2019, including alkali -soil resistance, fuel -
resistance and drinking water exposure tests.
7.0 IDENTIFICATION
7.1 The components of the Simpson Strong -Tie
Composite Strengthening Systems (CSSs) (fabric,
epoxy saturant, precured laminate and epoxy paste)
described in this report are identified with a label
indicating the name and address of the manufacturer
(Simpson Strong -Tie), the product name, expiration
date and the number of the ICC-ES evaluation report
[ESR-3403].
The proprietary FX-207 finish coating is labeled
with manufacturer's name (Simpson Strong -Tie) and
address, the product name, and expiration date.
7.2 The report holder's contact information is the following:
SIMPSON STRONG -TIE COMPANY, INC.
5956 WEST LAS POSITAS BOULEVARD
PLEASANTON, CALIFORNIA 94588
(800)925-5099
www.stronatie.com
ICC-ES Evaluation Report ESR-3403 LABC and LARC Supplement
Reissued November 2020
This report is subject to renewal November 2021.
www.1cc-es.org 1 (800) 423-6587 1 (562) 699-0543 A Subsidiary of the International Code Councilg'
DIVISION: 03 00 00—CONCRETE
Section: 03 01 00—Maintenance of Concrete
Section 03 01 30—Maintenance of Cast -in -Place Concrete
DIVISION: 04 00 00—MASONRY
Section 04 01 00—Maintenance of Masonry
Section: 04 01 20—Maintenance of Unit Masonry
REPORT HOLDER:
SIMPSON STRONG -TIE COMPANY, INC.
EVALUATION SUBJECT:
SIMPSON STRONG -TIE COMPOSITE STRENGTHENING SYSTEMS (CSSs)
1.0 REPORT PURPOSE AND SCOPE
Purpose:
The purpose of this evaluation report supplement is to indicate that the Simpson Strong -Tie Composite Strengthening Systems
(CSSs), described in ICC-ES evaluation report ESR-3403, have also been evaluated for compliance with the codes noted
below as adopted by the Los Angeles Department of Building and Safety (LADBS).
Applicable code editions:
■ 2020 City of Los Angeles Building Code (LABC)
■ 2020 City of Los Angeles Residential Code (LARC)
2.0 CONCLUSIONS
The Simpson Strong -Tie Composite Strengthening Systems (CSSs), described in Sections 2.0 through 7.0 of the evaluation
report ESR-3403, comply with the LABC Chapters 19 and 21. and the LARC, and are subject to the conditions of use described
in this supplement.
3.0 CONDITIONS Of USE
The Simpson Strong -Tie Composite Strengthening Systems (CSSs), described in this evaluation report supplement must
comply with all of the following conditions:
• All applicable sections in the evaluation report ESR-3403.
• The design, installation; conditions of use and identification of the composite strengthening systems are in accordance with
the 2018 International Building Code' (2018 IBC) provisions noted in the evaluation report ESR-3403.
• The design, installation and inspection are in accordance with additional requirements of LABC Chapters 16. 17, and 95,
as applicable.
• Use of the Simpson Strong -Tie Composite Strengthening Systems for strengthening unreinforced masonry structures must
be in accordance with Chapter Al of the 2020 City of Los Angeles Existing Building Code.
• The Simpson Strong -Tie Composite Strengthening Systems must not be used as compressive reinforcement for
strengthening concrete or masonry structure.
• Use of the Simpson Strong -Tie Composite Strengthening Systems to strengthen concrete coupling beams or concrete wall
piers is outside the scope of this supplement.
• The Simpson Strong-Tle Composite Strengthening Systems may be used on exterior side of exterior walls without additional
ICC-ES E)aluafion Reports are not to be constmad as representing aesthetics or mm. other attnbutes not spesifecaiiv addressed, nor rnv thay to be construed
as an endorsement gf the mhject of the report or a recommandarion for its use There is no warrant by ICC Evaluation .Semce, LLC, express or implied, as iw
to am finding or other matter in this report, or as to any product covered by the report.~_
Copyright 0 2020 ICC Evaluation Service, LLC. All rights reserved. Page 5 of 6
ESR-3403 LABC and LARC Supplement I Most Widely Accepted and Trusted Page 6 of 6
weather protection. However, the site -specific exposure conditions must be evaluated by the registered design professional
for each application.
Under the LARC, an engineered design in accordance with LARC Section R301.1.3 must be submitted.
This supplement expires concurrently with the evaluation report, reissued November 2020.