to: parties interested in raised-deck systems … · 2018-04-18 · international building code®...
TRANSCRIPT
April 18, 2018 TO: PARTIES INTERESTED IN RAISED-DECK SYSTEMS INSTALLED OVER
ROOF ASSEMBLIES OR EXTERIOR SUPPORTING STRUCTURES SUBJECT: Proposed Acceptance Criteria for Raised-deck Systems Installed Over Roof
Assemblies or Exterior Supporting Structures, Subject AC423-0618-R3 (DW/YM)
Hearing Information: Tuesday, June 5, 2018 8:00 am Hilton Los Angeles Airport 5711 West Century Boulevard Los Angeles, CA 90045 (310) 410-4000
Dear Colleague: You are invited to comment on a proposed new acceptance criteria, Raised-deck Systems Installed Over Roof Assemblies or Exterior Supporting Structures (AC423), which will be discussed at the Evaluation Committee hearing noted above. AC423 had initially gone before the Evaluation Committee back on February 2, 2010, and was put on further study at that time. The further study letter, dated February 26, 2010, identified the following items as to why it was placed under further study: 1. Installation of the raised-deck system over a roof assembly;
2. Wind Resistance;
3. Seismic Resistance.
After the February 2010 Evaluation Committee hearing, interest in the development of AC423 disappeared since the original proponent of this criteria decided not to continue. We currently have four proponents who are interested in restarting the development of this criteria. The proposed criteria addresses those items stemming from the further study letter and provides additional guidelines for the evaluation of raised-deck systems used over roof
AC423-0618-R3
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assemblies or exterior supporting structures to provide a level walking surface. The raised-deck system is comprised of pedestrian deck panels/pavers and plastic pedestals, which can be fixed or height-adjustable. The proposed criteria was also posted on the October 2017 Alternative Criteria development process agenda for public comment only. We received one public comment from Jodi Thomas of Dow Building Solutions. After review and consideration, it was determined that Ms. Thomas’ comments will need to be addressed under a different proposed new acceptance criteria since her comments are based on a building material product which is different than what is being proposed in AC423. The proposed criteria has been substantially revised from the criteria which was presented during the October 2017 alternate criteria posting. The following notable revisions were based on additional consideration by ICC-ES staff and input by a proponent: 1. Revise Section 1.3 to include 2012 International Building Code® (IBC); ASTM D638-14;
ASTM D1037-06a, ASTM D1761-88 (2000)ε1; ASTM E661-03; ASTM G154-06; ASTM G155-05a; and DOC PS 1.
2. Revise definitions mentioned in Section 1.4; and included new Section 1.4.4 to define Accessory Components.
3. Revise Section 2.1.1.3 to include new section regarding withdrawal (pull-out and pull-through, as applicable) and lateral resistance of mechanical fasteners into plastic material.
4. Revise Section 2.1.2 to include minimum requirements for installation instructions. 5. Significant revisions to Section 3.0 to include new test and performance requirements of
pedestals (3.1); deck panels/pavers (3.2); mechanical fastener testing (3.3); structural requirements for raised-deck systems (3.4); wind resistance (3.5); seismic resistance (3.6); roof fire classifications for raised-deck systems (3.7); and adhesives (optional) (3.8).
6. Revise Section 4.0 to clarify test methods of uniform load testing on panels/pavers supported by pedestals (4.1); foot traffic concentrated static and concentrated following impact (4.2); axial load testing on pedestals (4.3); adhesive testing (optional) (4.4); and dynamic load testing (optional) for wind and seismic consideration (4.5).
7. Add new requirement in Section 6 to address drainage of existing roof structure/assembly or exterior supporting structure after installation of the raised-deck system.
Should the committee approve the proposed criteria, the ICC-ES staff will not recommend a mandatory compliance date, since this is a new criteria and new report applications will need to show compliance with the approved criteria.
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You are invited to submit written comments on this or any other agenda item, or to attend the Evaluation Committee hearing and present your views in person. If you wish to contribute to the discussion, please note the following: 1. Regarding written comments and presentations:
a. You should submit these via e-mail to [email protected] or by U.S. mail to the Western
Regional (Brea) office to be received by the applicable due date.
b. Comments are to be received by May 9, 2018. These written comments will be forwarded to the committee before the meeting, and will also be posted on the ICC-ES web site shortly after the deadline for submission. Written comments that are not submitted by this deadline will not be considered at the meeting.
c. Rebuttal comments, from the proponent noted in this letter, are to be received by May
18, 2018. They will be forwarded to the committee before the meeting, and will also be posted on the ICC-ES web site shortly after the deadline for submission. Written rebuttal comments that are not submitted by the deadline will not be considered at the meeting.
d. Visual presentations, in PowerPoint format only, are to be received by May 30, 2018.
These will be forwarded to the committee before the meeting, and will also be posted on the ICC-ES web site shortly after the deadline for submission. Presentations that are not submitted by the deadline cannot be viewed at the meeting. Note: Videos will not be posted on the web site. Presentations will be retained with other records of the meeting. It is the presenter’s responsibility, prior to the presentation, to verify with ICC-ES staff that the presentation files have been transferred satisfactorily to the presentation computer.
e. ICC-ES will post to the web site, on June 1, 2018, memos by the ICC-ES staff,
responding to the previously received public comments.
f. If you miss the deadlines for submission of written comments and visual presentations, your verbal comments can be presented at the meeting.
g. Proposed criteria, written public comments, visual presentations, and responses by ICC-ES staff will be available at the meeting on a limited number of CDs for uploading to computers. ICC-ES will not provide any printed copies.
2. Regarding verbal comments and presentations:
Please plan to speak for not more than ten minutes. As noted above, visuals must be in PowerPoint format. We have a computer, projector, and screen available to those making visual presentations. It is the presenter’s responsibility, prior to their presentation,
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to verify with ICC-ES staff that presentation files have been satisfactorily transferred to the presentation computer.
3. Keep in mind that all materials submitted for committee consideration are part of the
public record and will not be treated as confidential. It is the presenter’s responsibility to certify to ICC-ES staff that no materials infringe copyright.
4. Please do not communicate with committee members before the meeting about any items
on the agenda. We appreciate your interest in the work of the Evaluation Committee. If you have any questions, please contact me at (800) 423-6587, extension 3272, or Yamil Moya, Senior Staff Engineer, at extension 3691. You may also reach us by e-mail at [email protected].
Yours very truly, Danny Wong, P.E. Staff Engineer
DW:YM/raf Encl. cc: Evaluation Committee
www.icc-es.org | (800) 423-6587 | (562) 699-0543 A Subsidiary of the International Code Council
®
PROPOSED ACCEPTANCE CRITERIA FOR
RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES OR EXTERIOR SUPPORTING STRUCTURES
AC423
Proposed April 2018
PREFACE Evaluation reports issued by ICC Evaluation Service, LLC (ICC-ES), are based upon performance features of the International family of codes. (Some reports may also reference older code families such as the BOCA National Codes, the Standard Codes, and the Uniform Codes.) Section 104.11 of the International Building Code® reads as follows:
The provisions of this code are not intended to prevent the installation of any materials or to prohibit any design or method of construction not specifically prescribed by this code, provided that any such alternative has been approved. An alternative material, design or method of construction shall be approved where the building official finds that the proposed design is satisfactory and complies with the intent of the provisions of this code, and that the material, method or work offered is, for the purpose intended, at least the equivalent of that prescribed in this code in quality, strength, effectiveness, fire resistance, durability and safety.
ICC-ES may consider alternate criteria for report approval, provided the report applicant submits data demonstrating that the alternate criteria are at least equivalent to the criteria set forth in this document, and otherwise demonstrate compliance with the performance features of the codes. ICC-ES retains the right to refuse to issue or renew any evaluation report, if the applicable product, material, or method of construction is such that either unusual care with its installation or use must be exercised for satisfactory performance, or if malfunctioning is apt to cause injury or unreasonable damage.
Acceptance criteria are developed for use solely by ICC-ES for purposes of issuing ICC-ES evaluation reports
Copyright © 2018 ICC Evaluation Service, LLC. All rights reserved.
AC423-0618-R3 Page 2 April 2018
PROPOSED ACCEPTANCE CRITERIA FOR RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES OR EXTERIOR SUPPORTING
STRUCTURES
1.0 INTRODUCTION 1
1.1 Purpose: The purpose of this acceptance criteria is to establish requirements for raised-2
deck systems installed over roof assemblies or exterior supporting structures to be recognized 3
in an ICC Evaluation Service, LLC (ICC-ES), evaluation report under the 2015 and 2012 4
International Building Code® (IBC). Bases of recognition are IBC Section 104.11. 5
This criteria specifies the test methods, performance and installation requirements, for 6
raised-deck systems that are to be recognized by ICC-ES, since such requirements are not 7
addressed by the code. 8
1.2 Scope: This criteria is applicable to raised-deck systems installed over roof assemblies 9
or exterior supporting structures. Each raised-deck system consists of deck panels/pavers 10
supported by pedestals placed directly on roof assemblies or exterior supporting structures, to 11
provide a level walking surface. Pedestals can be adjusted to various heights or installed at a 12
fixed height. The pedestals need not be mechanically or adhesively attached to the 13
supporting structure. The raised-deck system comprised of the deck panels/pavers and 14
pedestals must be restrained on all sides against horizontal movement using a perimeter-15
restraining system and along any ramps and/or walkway areas. 16
1.3 Codes and Referenced Standards: Where standards are referenced in this criteria, 17
these standards shall be applied consistently with the applicable code upon which compliance 18
is based. 19
1.3.1 2015 and 2012 International Building Code® (IBC), International Code Council. 20
PROPOSED ACCEPTANCE CRITERIA FOR AC423-0618-R3 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page 3 OR EXTERIOR SUPPORTING STRUCTURES April 2018
1.3.2 ASCE/SEI 7-10, Minimum Design Loads for Buildings and Other Structures, with 21
Supplement No. 1 (-10 for the 2012 IBC), American Society of Civil Engineers/Structural 22
Engineering Institute. 23
1.3.3 ASTM D638-14, Standard Test Method for Tensile Properties of Plastics, ASTM 24
International. 25
1.3.4 ASTM D790-03, Standard Test Methods for Flexural Properties of Unreinforced and 26
Reinforced Plastics and Electrical Insulating Materials, ASTM International. 27
1.3.5 ASTM D1037-06a, Standard Test Methods for Evaluation Properties of Wood-base 28
Fiber and Particle Panel Materials, ASTM International. 29
1.3.6 ASTM D1413-07e1, Test Method for Wood Preservatives by Laboratory Soil-Block 30
Cultures, ASTM International. 31
1.3.7 ASTM D1761-88 (2000)ε1, Test Methods for Mechanical Fasteners in Wood, ASTM 32
International. 33
1.3.8 ASTM D2017-05, Test Method for Accelerated Laboratory Test of Natural Decay 34
Resistance of Woods, ASTM International. 35
1.3.9 ASTM D3345-08, Standard Test Method for Laboratory Evaluation of Wood and Other 36
Cellulosic Materials for Resistance to Termites, ASTM International. 37
1.3.10 ASTM E84-2013(-08a for the 2012 IBC), Test Methods for Surface Burning 38
Characteristics of Building Materials, ASTM International. 39
1.3.11 ASTM E108-2011(-07a for the 2012 IBC), Test Methods for Fire Tests of Roof 40
Coverings, ASTM International. 41
PROPOSED ACCEPTANCE CRITERIA FOR AC423-0618-R3 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page 4 OR EXTERIOR SUPPORTING STRUCTURES April 2018
1.3.12 ASTM E661-03, Standard Test Method for Performance of Wood and Wood-42
Based Floor and Roof Sheathing Under Concentrated Static and Impact Loads, ASTM 43
International. 44
1.3.13 ASTM E2322-03 (Reapproved 2015), Standard Test Method for Conducting 45
Transverse and Concentrated Load Tests on Panels Used in Floor and Roof Construction, 46
ASTM International. 47
1.3.14 ASTM G154-06, Standard Practice for Operating Fluorescent Ultraviolet (UV) 48
Lamp Apparatus for Exposure of Nonmetallic Materials, ASTM International. 49
1.3.15 ASTM G155-05a, Standard Practice for Operating Xenon Arc Light Apparatus for 50
Exposure of Non-Metallic Metals, ASTM International. 51
1.3.16 AWPA E1-06, Standard Test Method for Laboratory Evaluation to Determine 52
Resistance to Subterranean Termites, American Wood-Protection Association. 53
1.3.17 AWPA E10-07, Standard Test Method of Testing Wood Preservatives by 54
Laboratory Soil-Block Cultures, American Wood-Protection Association. 55
1.3.18 Recommended Test Procedures for Access Floors, Ceilings and Interior Systems 56
Construction, (CISCA), 2007. 57
1.3.19 PS 1-09, Structural Plywood, United States Department of Commerce. 58
1.3.20 PS 2-10, Performance Standard for Wood-Based Structural Use Panels, United 59
States Department of Commerce. 60
1.3.21 UL 723-08 (with Revisions through September 2010) (-08 for the 2012 IBC), 61
Standard for Test for Surface Burning Characteristics of Building Materials, Underwriters 62
Laboratories, LLC. 63
PROPOSED ACCEPTANCE CRITERIA FOR AC423-0618-R3 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page 5 OR EXTERIOR SUPPORTING STRUCTURES April 2018
1.3.22 UL 790-04 (with Revisions through October 2008) (-04 for the 2012 IBC), Standard 64
Test Methods for Fire Tests of Roof Coverings, Underwriters Laboratories, Inc. 65
1.3.23 ICC-ES Acceptance Criteria for Sandwich Panel Adhesives (AC05). 66
1.3.24 ICC-ES Acceptance Criteria for Seismic Certification by Shake-table Testing of 67
Nonstructural Components (AC156). 68
1.4 Definitions: 69
1.4.1 Raised-deck System: An assembly installed over a roof assembly and/or exterior 70
supporting structure consisting of pedestrian deck panels/pavers mounted on pedestals using 71
other accessory components, and mechanical fasteners and/or adhesives as required by the 72
manufacturer for attaching deck panels/pavers to pedestals and other accessory components. 73
1.4.2 Pedestrian Deck Panels/Pavers: Pedestrian deck panels/pavers under this criteria 74
are manufactured from materials such as naturally durable wood and non-naturally durable 75
wood, ceramic, stone, or concrete and shall be suitable for exterior applications. The deck 76
panel/paver specifications must be included in the evaluation report. Evidence of compliance 77
with the applicable provisions in the code and the evaluation report shall be submitted to the 78
code official. 79
1.4.3 Pedestal: A fixed or adjustable-height support column composed of a plastic support 80
base, plastic vertical structural element, and a plastic load bearing top cap/surface. The 81
pedestal components must be manufactured under an approved quality control program. 82
1.4.4 Accessory Components: These components are used in the installation of 83
pedestals and deck panels/pavers of the raised-deck system. These components are made of 84
either plastic or metal material. These components may be used to provide lateral bracing of 85
PROPOSED ACCEPTANCE CRITERIA FOR AC423-0618-R3 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page 6 OR EXTERIOR SUPPORTING STRUCTURES April 2018
the pedestals, vertical support, leveling the pedestal, and to restrain the deck panel/paver to 86
the top of the pedestal. 87
2.0 BASIC INFORMATION 88
2.1 General: The following information shall be submitted: 89
2.1.1 Product Description: 90
2.1.1.1 Deck Panels/Pavers: Complete information concerning materials, weight, 91
dimensions, specifications, and the manufacturing process. Specifications for cementitious 92
materials (e.g. concrete pavers) shall include 28-day compressive strength (fc’), impact 93
resistance, and density. 94
2.1.1.2 Pedestals: Components used in the supporting structure shall be defined. 95
Complete information concerning dimensions, specifications, manufacturer’s installation 96
instructions, and the manufacturing process of the pedestals shall be provided. 97
2.1.1.3 Connections: Connections (mechanical fasteners) shall be detailed or sufficiently 98
described. Fasteners used in the assembly shall be specified for system positioning (e.g. 99
panel/paver attachment to plastic top cap/surface). Information regarding the mechanical 100
fasteners shall be provided as follows: 101
a. Whether the fastener is a commodity fastener or a proprietary fastener. 102
b. Fastener name and designation, as applicable. 103
c. Fastener dimensions. 104
d. Withdrawal (pull-out and pull-through, as applicable) and lateral resistance of 105
mechanical fasteners into plastic material based on requirements described in Section 106
3.3 of this criteria. 107
PROPOSED ACCEPTANCE CRITERIA FOR AC423-0618-R3 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page 7 OR EXTERIOR SUPPORTING STRUCTURES April 2018
e. For proprietary fasteners, provide the following: name of the manufacturer; 108
manufacturer’s model or catalog number; technical drawing showing the fastener 109
dimensions, including manufacturing tolerances; material specifications, including 110
chemical and mechanical properties and protective (corrosion) coating requirements. 111
2.1.1.4 Adhesives (Optional): Where recognition is sought for adhesives that are used 112
to adhere to either the pedestal to the panel/paver or to adhere the vertical structural element 113
of the pedestal to its support base and top cap, the type(s) of adhesives used shall be 114
described. Information shall cover commercial stock numbers, specifications, assembly 115
conditions, application instructions, pot life, storage temperature, and the minimum cure time 116
when applied. 117
2.1.2 Installation Instructions: Drawings or installation details, limitations, and a 118
description of how the product is to be installed. At a minimum, the instructions should indicate 119
the layout of the pedestals, maximum and minimum pedestal heights, perimeter restraint 120
details, panel/paver installation over pedestals and details on the repair and replacement of 121
pedestals and panel/pavers. 122
2.1.3 Packaging and Identification: A description of the method of packaging and 123
identifying of deck panel/pavers, pedestals, and accessory components. Identification 124
provisions shall include the manufacturer’s name, the product name, the manufacturing date, 125
the evaluation report number and the name or logo of the inspection agency. A copy of the 126
installation instructions, as packaged with the product, shall be submitted. 127
2.1.4 Field Preparation: A description of the methods for assembling the pedestals (base 128
support and top cap to vertical structural element), field-cutting and trimming pedestals and/ or 129
PROPOSED ACCEPTANCE CRITERIA FOR AC423-0618-R3 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page 8 OR EXTERIOR SUPPORTING STRUCTURES April 2018
deck panel/pavers; adhesive preparation and placement; fastener placement; and list any 130
accessory components required for installation. 131
2.2 Testing Laboratories: Testing laboratories shall comply with Section 2.0 of the ICC-ES 132
Acceptance Criteria for Test Reports (AC85) and Section 4.2 of the ICC-ES Rules of 133
Procedure for Evaluation Reports. 134
2.3 Test Reports: Test reports shall comply with AC85. The test reports shall be in 135
sufficient detail to identify specimen properties. The testing agency shall verify and report 136
dimensions, weight, density, chemical formulation, treatment, moisture content and other 137
relevant physical characteristics of the major components. The testing laboratory shall also 138
verify and report the manner of installation. 139
2.4 Product Sampling: Sampling of the test specimens for tests under this criteria shall 140
comply with Sections 3.1 and 3.3 of AC85. 141
2.5 Qualification Test Plan: A qualification test plan shall be submitted to and approved by 142
ICC-ES staff prior to any testing being conducted. 143
3.0 TEST AND PERFORMANCE REQUIREMENTS 144
3.1 Pedestals: The following tests shall be conducted on representative samples of the 145
plastic material used in the Raised-deck system (such as the support base, top cap and 146
vertical structural element). Where indicated below, the requirements shall also apply to 147
accessory components used with the pedestals. Pedestal assembly manufacturers which only 148
provide the plastic support base and top cap, must also include recognition of the vertical 149
structural elements representative of the materials used in the tests in their quality control 150
documentation: 151
PROPOSED ACCEPTANCE CRITERIA FOR AC423-0618-R3 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page 9 OR EXTERIOR SUPPORTING STRUCTURES April 2018
3.1.1 Plastic Tests for Pedestals and Accessory Components: Plastic materials used 152
in the production of pedestals and accessory components shall comply with the following 153
requirements IBC Section 2606.4, as shown in Sections 3.1.1.1 and 3.1.1.2 below: 154
3.1.1.1 The plastic material shall have a self-ignition temperature of 650F or greater when 155
tested in accordance with ASTM D1929 at the maximum thickness intended for use. 156
3.1.1.2 The plastic material shall have a smoke-developed index not greater than 450 157
where tested in the manner intended for use in accordance with ASTM E84 or UL723; or a 158
maximum smoke density rating not greater than 75 where tested in the thickness intended for 159
use in accordance with ASTM D2843 and shall conform to Class CC1 or CC2 when tested in 160
accordance with ASTM D635 at the thickness intended for use. 161
3.1.1.3 General Weathering Testing: Plastic materials used in the pedestal system 162
including accessory components shall comply with the requirements shown in Sections 163
3.1.1.3.1 thru 3.1.1.3.3. 164
3.1.1.3.1 General: Five specimens shall be exposed to ultraviolet light in accordance with 165
Section 3.1.1.2.3 of this criteria, and five specimens shall be held as control specimens. After 166
exposure, both the exposed specimens and the control specimens shall be tested in 167
accordance with ASTM D790 and/ or ASTM D638. 168
3.1.1.3.2 Ultraviolet Light Exposure: Exposure to ultraviolet light shall follow either 169
ASTM G154 or ASTM G155 practices for 2000-hours. 170
3.1.1.3.3 Conditions of Acceptance: Loss in flexural and/or tensile properties resulting 171
from the ultraviolet light exposure shall be +/-10% of the average strength of the control 172
specimens. If the change exceeds 10%, the pedestal’s allowable axial load determined in 173
Section 4.3 shall be further reduced by the amount in excess of 10%. 174
PROPOSED ACCEPTANCE CRITERIA FOR AC423-0618-R3 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page 10 OR EXTERIOR SUPPORTING STRUCTURES April 2018
3.2 Pedestrian Deck Panels/Pavers Requirements: Deck panels/pavers, shall be 175
manufactured from durable materials, such as a naturally durable wood, ceramic, stone, or 176
concrete. In cases where the evaluation report holder only supplies the pedestal system, the 177
evaluation report must include a description of the panel/pavers used in the applicable 178
qualification tests of the raised-deck system and a statement indicating that the panels/pavers 179
used for specific projects must be installed to the satisfaction of the code official. For 180
recognition of wood deck panels/pavers not manufactured from wood considered a naturally 181
durable wood, as defined in IBC Section 2302, non-naturally durable wood deck panel/paver 182
materials will be subjected to the requirements in Section 3.2.2. 183
3.2.1 Ceramic, Stone, and Cementitious Panels/Pavers: 184
3.2.1.1 Impact Resistance: Each ceramic, stone, or cementitious panel/paver shall 185
demonstrate resistance to drop impact forces when installed in a raised-deck system 186
application in accordance with Section 8 of CISCA testing procedure with a minimum impact 187
weight of ten pounds. 188
3.2.1.1.1 Conditions of Acceptance: The panel/paver and support backer, if used, shall 189
be able to support the impact weight of ten pounds when tested in accordance with Section 190
3.2.1.1 without collapsing under its own weight. Examination of the panel/ paver specimen and 191
any support backer shall reveal impact resistance such that a tile which is tested until failure as 192
defined by Section 8 of the CISCA testing procedures does not collapse after impact under its 193
own weight when pedestal supported. 194
3.2.2 Non-Naturally Durable Wood Panels/pavers: 195
3.2.2.1 Fungal Decay Resistance: The wood material shall demonstrate resistance to 196
fungal decay in accordance with ASTM D1413, ASTM D2017, or AWPA E10. 197
PROPOSED ACCEPTANCE CRITERIA FOR AC423-0618-R3 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page 11 OR EXTERIOR SUPPORTING STRUCTURES April 2018
3.2.2.1.1 Conditions of Acceptance: Examination of test blocks shall reveal decay 198
resistance equivalent to that of heartwood of naturally durable wood used in identical 199
applications, as determined by visual inspection and average weight loss. Naturally durable 200
woods are defined IBC Section 2302. 201
3.2.2.2 Termite Resistance: Testing in accordance with AWPA E1 or ASTM D3345 shall 202
be used for evaluation on resistance to termite attack of wood material. 203
3.2.2.2.1 Conditions of Acceptance: Visual inspection of the test specimens shall 204
demonstrate resistance to termite attack equivalent to that of preservative-treated wood or the 205
heartwood of naturally durable wood used in identical applications. 206
3.2.2.3 Surface-Burning Characteristics of Wood Panels/pavers: Wood Panel/pavers 207
shall have a minimum Class B flame-spread and smoke-developed indexes when tested in 208
accordance with ASTM E84 / UL 723 at the maximum thickness for which recognition is 209
sought. 210
3.3 Mechanical Fasteners Holding Test: A minimum of five replicate test specimens, 211
which consists of the pedestal and mechanical fastener, shall be subjected to withdrawal (pull-212
out and pull-through, as applicable) and lateral resistance tests in accordance with ASTM 213
D1761 or ASTM D1037, to determine the allowable capacity of the connection. Where 214
accessory components are fastened to pedestals, the fastener connection shall also be 215
determined under this section. 216
Exception: When full scale dynamic wind testing is conducted in accordance with 217
Section 4.5.1.1 and/or full scale dynamic seismic testing is conducted according to 218
Section 4.5.2.1; and an analysis is submitted establishing the capacity of the fastener 219
used in testing and installation; then the tests referenced in Section 3.3 are not required. 220
PROPOSED ACCEPTANCE CRITERIA FOR AC423-0618-R3 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page 12 OR EXTERIOR SUPPORTING STRUCTURES April 2018
3.3.1 Conditions of Acceptance: Allowable capacities of the fasteners shall be the 221
average ultimate load divided by a factory safety of three (3) and shall be further reduced by 222
the amount in excess of 10% if requirements under Section 3.1.1.3 of this criteria are not met. 223
The allowable capacity of the fastener connection shall not exceed the demand resulting from 224
wind and seismic forces. 225
3.4 Structural Requirements for Raised-deck Systems: 226
3.4.1 General: Raised-deck systems shall withstand applicable uniform loads specified in 227
IBC Table 1607.1, as well as combined load effects of other applicable gravity loads defined in 228
IBC Chapter 16, such as snow and live loads. The allowable uniform load capacity of the 229
raised-deck system is based on the lowest of the capacity established from Sections 3.4.1.2 230
and 3.4.1.3. The concentrated live load performance shall be established by complying with 231
the requirements in Section 3.4.1.4. 232
3.4.1.1 Ultimate Test Load: When a minimum three replicate test specimens are tested, 233
and the coefficient of variation is greater than 15 percent, the least recorded test load value 234
shall be used as the ultimate test load; where the coefficient of variation does not exceed 15 235
percent, the average value shall be used as the ultimate test load. When five or more replicate 236
test specimens are tested, the average value shall be used as the ultimate test load, 237
regardless of the coefficient of variation. Testing must comply with Sections 3.4.1.2, 3.4.1.3, 238
and 3.4.1.4 of this criteria. 239
3.4.1.2 Uniform Load Test for Panels/Pavers Supported by Pedestals: Testing shall 240
be conducted in accordance with Section 4.1 of this criteria. The recognized allowable loads 241
shall be the lesser of the following: 242
PROPOSED ACCEPTANCE CRITERIA FOR AC423-0618-R3 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page 13 OR EXTERIOR SUPPORTING STRUCTURES April 2018
a. The maximum deflection of panels/pavers, under allowable live loads specified in 243
IBC Table 1607.1, shall be 1/360 of the span in accordance with IBC Table 1604.3. 244
b. A minimum factor of safety of 3 shall be applied to the ultimate test load, as 245
determined in Section 3.4.1.1 of this criteria, to establish the allowable load. 246
3.4.1.3 Pedestal Axial Load: The allowable pedestal axial load shall be the ultimate test 247
load as determined in Section 3.4.1.1 of this criteria, divided by a safety factor of 3 and shall be 248
further reduced by the amount in excess of 10% if requirements under Section 3.1.1.3.1 of this 249
criteria are not met. Testing shall be conducted in accordance with Section 4.3 of this criteria. 250
3.4.1.4 Foot Traffic Concentrated Static and Impact Test Performance: The deck 251
panels/pavers shall resist the ultimate concentrated static and concentrated static following 252
impact performance loads of 550 lbf and 400 lbf, respectively, as shown in the Single Floor at 253
24 inches on center end use span rating in Table 2 of PS-2. Testing must be conducted in 254
accordance with Section 4.2 of this criteria. A minimum of three replicate test specimens shall 255
be tested, where the ultimate test load shall be as determined in Section 3.4.1.1 of this criteria. 256
The test specimens shall include the deck panels/pavers and pedestals spaced 24 inches on 257
center. The applied concentrated static and impact loads shall be located on the most critical 258
locations of the panel/ paver in accordance with Section 4.2 of this criteria. 259
3.5 Wind Resistance: If an engineering study based on in-field studies or a history of 260
performance over a minimum ten-year period is signed and sealed by a registered design 261
professional, recognition of the raised-deck system shall be granted for use in areas subjected 262
to a maximum ultimate design wind speed of 115 mph (185 km/h) on Category II structures 263
having a mean roof height of 33 feet (10 m) in Exposure B areas. 264
PROPOSED ACCEPTANCE CRITERIA FOR AC423-0618-R3 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page 14 OR EXTERIOR SUPPORTING STRUCTURES April 2018
Exception: Recognition of raised-deck systems beyond these limits may be granted, 265
provided full-scale dynamic wind uplift tests are conducted in accordance with Section 266
4.5.1 of this criteria, and data analysis of the test results shall be conducted and 267
prepared as determined by a registered design professional. To assure acceptance by 268
ICC-ES, test procedures and data analysis methods used shall be submitted to ICC-ES 269
for review and approval prior-to testing. Testing and data analysis of the test results 270
shall be conducted on each raised-deck system for which recognition is sought, unless 271
determined by a registered design professional and ICC-ES evaluation staff to be 272
qualified based on testing of a representative material (i.e. panel/paver density, 273
dimensions, installation method, etc.). Raised-deck systems afforded this exception 274
shall be evaluated by a registered design professional to withstand applicable wind 275
loads specified in ASCE/SEI 7 Chapters 26 through 30, as well as combined load 276
effects of other applicable gravity loads defined in IBC Chapter 16, such as live and 277
snow loads. 278
3.6 Seismic Resistance: Recognition of raised-deck systems shall be limited to structures 279
assigned to Seismic Design Category (SDC) A or B, and the raised-deck systems having a 280
component importance factor of 1.0 as defined per Sections 13.1.3 and 13.1.4 of ASCE/SEI 7. 281
Exception: Recognition of raised-deck systems installed with structures assigned to 282
Seismic Design Categories C through F require full-scale dynamic tests conducted in 283
accordance with Section 4.5.2 of this criteria and data analysis of the test results shall 284
be conducted and prepared by a registered design professional. Test procedures and 285
data analysis methods used shall be submitted to ICC-ES for review and approval prior 286
PROPOSED ACCEPTANCE CRITERIA FOR AC423-0618-R3 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page 15 OR EXTERIOR SUPPORTING STRUCTURES April 2018
testing. Testing and data analysis of the test results shall be conducted on each raised-287
deck system for which recognition is sought. 288
3.7 Roof Fire Classification for Raised-deck Systems: 289
3.7.1 General: When installed above a roof, roof fire classification testing in accordance 290
with ASTM E108 or UL 790 shall be conducted when recognition is sought for new 291
construction and, if applicable, for installation of the raised-deck system installed over an 292
existing Class A, Class B or Class C classified roof covering system. Testing shall be 293
conducted, with the roof deck and raised-deck system, at the minimum slope of ¼:12 (2 294
percent slope). For greater slopes, testing shall be conducted at the maximum slope for which 295
recognition is sought. 296
3.7.1.1 New and Existing Construction with a Noncombustible Roof Deck: When the 297
raised-deck system is installed directly over a code-complying noncombustible (concrete or 298
metal) roof deck, spread-of-flame testing shall be conducted on the raised-deck system(s) 299
representative of the system(s) for which recognition is sought. Specifically, each panel/paver 300
material is to be separately qualified by testing unless determined by ICC-ES to be qualified 301
based on testing of a representative material. 302
3.7.1.2 New and Existing Classified Roof Covering with a Noncombustible Roof 303
Deck: When the raised-deck system is installed over a code-complying classified (Class A, 304
Class B or Class C) roof covering installed over a noncombustible (concrete or metal) roof 305
deck, spread-of-flame testing shall be conducted on the combined raised-deck system and 306
classified roof covering representative of the systems for which recognition is sought. 307
Specifically, each panel/paver material is to be separately qualified by testing unless 308
determined by ICC-ES to be qualified based on testing of a representative material. 309
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3.7.1.3 New and Existing Classified Roof Covering with a Combustible Roof 310
Deck: When the raised-deck system is installed over a code-complying classified (Class A, 311
Class B or Class C) roof covering installed over a combustible (plywood) roof deck, spread-of-312
flame, intermittent-flame and burning-brand testing shall be conducted on the combined 313
raised-deck system and classified roof covering representative of the systems for which 314
recognition is sought. Specifically, each panel/paver material is to be separately qualified by 315
testing unless determined by ICC-ES to be qualified based on testing of a representative 316
material. Testing shall be conducted on specimens constructed in accordance with ASTM 317
E108 or UL 790 with a roof deck made of minimum 15/32-inch-thick (11.9 mm), A-C, Group 1, 318
exterior plywood with face and back veneers of Douglas fir marked as conforming to PS 1 for 319
softwood plywood. If recognition is sought for combustible roof deck materials other than 320
plywood, the qualification test plan required by Section 2.5 of this criteria must address each 321
combustible roof deck material. 322
3.8 Adhesives (Optional): Where recognition is sought for adhesives used to adhere to 323
either the pedestal to the panel/paver or the vertical structural element of the pedestal to its 324
support base and top cap, testing shall be in accordance with Section 4.4 of this criteria to 325
establish the durability of the adhesive. Testing is required for each adhesive for which 326
recognition is sought. Specimens tested after being subjected to adverse conditions, such as 327
accelerated aging or oxidation, shall not exhibit a strength loss of more than 20 percent when 328
the average results are compared to the average results for the control specimens. 329
4.0 TEST METHODS 330
4.1 Uniform Load Test on Panels/Pavers Supported by Pedestals: A minimum of three 331
replicate test specimens shall be used. Testing shall be conducted in accordance with Section 332
PROPOSED ACCEPTANCE CRITERIA FOR AC423-0618-R3 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page 17 OR EXTERIOR SUPPORTING STRUCTURES April 2018
10.2.1 of ASTM E 2322 and Section 7 of CISCA testing procedures, with the following 333
clarifications: 334
a. Load application and deformation readings shall be in accordance with Section 335
6.3 of ASTM E2322. 336
b. Air bags shall fully contact the test specimens during testing. 337
c. Bearing area of the test specimens shall accurately represent the intended field 338
installation. 339
4.2 Foot Traffic Concentrated Static and Concentrated Following Impact: Concentrated 340
load tests shall be conducted in accordance with ASTM E661, Procedure A with the following 341
modifications: 342
4.2.1 The deck panel/paver and pedestal system shall be installed in a manner 343
representative of its intended use. 344
4.2.2 The loading disk for concentrated load shall be 3-inch diameter. 345
4.2.3 The drop bag weight for impact shall be 30 lbs. 346
4.2.4 Impact shall be 75 lbf-ft. 347
4.3 Axial Load Test on Pedestals: Axial load tests shall be conducted in accordance with 348
Section 5 of CISCA testing procedures on a minimum of three replicate test specimens of each 349
type of pedestal for which recognition is sought. Pedestals shall be tested at conditions 350
representative of their installation. Test specimens shall consider testing at the maximum 351
pedestal height and including slope compensating accessory components. 352
4.4 Adhesive Tests (Optional): Where recognition is sought for adhesives used to adhere 353
either the pedestal to the panel/paver or the vertical structural element of the pedestal to its 354
PROPOSED ACCEPTANCE CRITERIA FOR AC423-0618-R3 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page 18 OR EXTERIOR SUPPORTING STRUCTURES April 2018
support base and top cap; testing shall be conducted under Sections 4.4.1, 4.4.2, and 4.4.3 of 355
this criteria. Test specimens, conditioning, and methods shall comply with the ICC-ES 356
Acceptance Criteria for Sandwich Panel Adhesives (AC05), as indicated in the following 357
sections. Materials which are more representative of typical installation than those described 358
in Section 5.0 of AC05 may be used in test specimens. A set of specimens shall consist of five 359
replicate specimens. 360
4.4.1 Block Shear: Three sets of specimens shall be prepared. The control set shall be 361
conditioned in accordance with Section 6.0 of AC05, and tested in accordance with Section 8.3 362
of AC05. The second set shall be subjected to accelerated aging in accordance with Section 363
7.1 of AC05, conditioned in accordance with Section 6.0 of AC05, and tested in accordance 364
with Section 8.3 of AC05. The third set shall be subjected to an oxidation process in 365
accordance with Section 8.7 of AC05 and tested in accordance with Section 8.3 of AC05. 366
4.4.2 Bond Strength: Two sets of specimens shall be prepared. The control set shall be 367
conditioned in accordance with Section 6.0 of AC05, and tested in accordance with Section 8.5 368
of AC05. The second set shall be subjected to accelerated aging in accordance with Section 369
7.1 of AC05, conditioned in accordance with Section 6.0 of AC05, and tested in accordance 370
with Section 8.5 of AC05. 371
4.4.3 Mold: Each adhesive shall be evaluated for mold resistance in accordance with 372
Section 8.8 of AC05. 373
4.4.4 Chemical Reagent (Optional): Where recognition is sought for resistance to 374
chemical reagents, testing shall be conducted in accordance with Section 8.9 of AC05 for each 375
chemical reagent. 376
4.5 Dynamic Load Tests (Optional): 377
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4.5.1 Wind Uplift Tests on Raised-deck system: 378
4.5.1.1 Wind Uplift Tests: Testing shall be in accordance with Section 31 of ASCE/SEI 379
7, to determine Ultimate and Allowable wind uplift loads for the raised-deck system and 380
panels/pavers; analysis of test data shall be signed and sealed by registered design 381
professional. A test plan shall be submitted to ICC-ES staff prior-to testing for approval. 382
Testing shall be conducted on each panel/paver and pedestal support system for which 383
recognition is sought, unless determined by a registered design professional and ICC-ES 384
evaluation staff to be qualified based on testing of a representative material (i.e. dimensions, 385
panel/paver density, physical strength, etc.). Structures should be evaluated by a design 386
professional following ASCE/SEI 7 procedure to ensure the project will not experience any 387
loads which exceed the loads accepted by the ICC-ES evaluation staff or code official. 388
4.5.2 Seismic Tests on Raised-deck system: 389
4.5.2.1 Seismic Load Tests: Testing shall be in accordance with the applicable 390
provisions in Section 6.0 of the ICC-ES Acceptance Criteria for Seismic Qualification by 391
Shake-table Testing of Nonstructural Components (AC156). In accordance with Section 4.3 392
and 6.5.1 of AC156, the Required Response Spectrum (RSS) shall be based on the maximum 393
value of design spectral response accelerations, SDS, for which recognition is sought. The z/h 394
parameter shall be taken as 1.0. In accordance with Section 4.3 of AC156, the seismic 395
parameters used for shake-table testing shall be described in the test report. Analysis of test 396
data shall be signed and sealed by registered design professional. 397
4.5.2.2 Test Specimens: In order to rely on limited testing to recognize untested raised 398
deck systems, as required by AC156, Section 4.5, including subsections 4.5.1 through 4.5.5, 399
tested assemblies shall be the assemblies that offer the least seismic capacity. Test specimen 400
PROPOSED ACCEPTANCE CRITERIA FOR AC423-0618-R3 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page 20 OR EXTERIOR SUPPORTING STRUCTURES April 2018
shall include the raised-deck system components that will be recognized in the evaluation 401
report. Test specimen shall consider, but is not limited, to the following conditions: roof system 402
supporting the raised deck system (including roof covering and slope); maximum pedestal 403
height and bracing conditions; panel/paver types (mass and connection of deck panel/paver to 404
pedestal); raised-deck system mass; and raised-deck system perimeter restraint. 405
4.5.2.3 Conditions of acceptance for shake-table testing: In accordance with AC156, 406
Section 6.0, including subsections 6.2, 6.3, 6.6, 6.7 and 6.8.1, ceiling assemblies subjected to 407
the seismic demand described in Section 4.5.2.1 of this criteria shall satisfy the requirements 408
for structural integrity and functionality (or operational requirements). The following specific 409
requirements shall be satisfied: 410
4.5.2.3.1 The panels/pavers and the raised-deck system should not have any damage that 411
will prevent serviceability for pedestrian live loading. 412
4.5.2.3.2 Major damage, such as panel/paver buckling, panel/paver dislodging from 413
pedestals, crushing or dislocation of deck panels/pavers and pedestals that constitutes a 414
tripping hazard shall be constituted as unacceptable behavior. 415
4.5.2.3.3 The perimeter restraints should maintain its structural integrity and its function 416
after the shake-table testing. 417
4.5.2.3.4 Minor damage to the raised-deck system provided it can be repaired so it can 418
retain its function after the repair. 419
5.0 QUALITY CONTROL 420
5.1 The products shall be manufactured under an approved quality control program with 421
inspections by ICC-ES or by a properly accredited inspection agency that has a contractual 422
relationship with ICC-ES. 423
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5.2 Quality documentation complying with the ICC-ES Acceptance Criteria for Quality 424
Documentation (AC10) shall be submitted. A qualifying inspection shall be conducted at each 425
manufacturing facility when required by the ICC-ES Acceptance Criteria for Inspections and 426
Inspection Agencies (AC304). 427
5.3 Ongoing follow-up inspections, by ICC-ES or by a properly accredited inspection agency 428
that has a contractual relationship with ICC-ES, are required under this acceptance criteria. 429
6.0 EVALUATION REPORT RECOGNITION 430
The evaluation report shall include the following: 431
6.1 Basic information referenced in Section 2.1 of this criteria, including a description of the 432
raised-deck system’s components, installation instructions and requirements, and product 433
identification information. 434
6.2 A statement indicating that the ability of the existing roof structure/assembly or exterior 435
supporting structure to resist the applicable loads imposed by the raised-deck system must be 436
demonstrated by a registered design professional to the satisfaction of the building official. 437
6.3 A statement indicating that the ability of the existing roof structure/assembly or exterior 438
supporting structure to provide adequate drainage after installation of the raised-deck system 439
must be demonstrated by a registered design professional to the satisfaction of the code 440
official. 441
6.4 A statement indicating that a perimeter containment must be installed around the 442
perimeter of the raised-deck system and at all ramp and/ or walkway areas as determined by a 443
registered design professional. The perimeter containment must comply with requirements in 444
the evaluation report, and must be designed by a registered design professional, and 445
subjected to approval of the code official. 446
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6.5 A statement indicating that recognition of the raised-deck system is limited to areas 447
subject to a maximum ultimate design wind speed of 115 mph (185 km/h) on Risk Category II 448
structures, having a mean roof height of 33 feet (10 m) in Exposure B areas; in addition to the 449
historical performance engineering study conducted and prepared by a registered design 450
professional to validate claims of the statement. 451
6.5.1 (Optional): For recognition beyond a maximum ultimate design wind speed of 115 452
mph (185 km/h) on Risk Category II structures, having a mean roof height of 33 feet (10m) in 453
Exposure B areas; the acceptable design wind uplift pressures of the raised-deck system 454
derived from testing and subsequent data analysis shall be conducted and shall not exceed 455
the allowable wind uplift pressure of the existing roof assembly. Testing data analysis shall be 456
conducted by a registered design professional and all related documents shall bear the 457
signature of a registered design professional. Acceptable design wind pressures shall be 458
clearly identified as Strength Design values or Allowable Stress Design values. 459
6.6 A statement indicating that recognition of the raised-deck system is limited to structures 460
assigned to Seismic Design Categories A and B, and the raised-deck systems having a 461
component importance factor of 1.0, and recognition of structures assigned to Seismic Design 462
Categories C through F is outside the scope of the evaluation report. 463
6.6.1 (Optional): When recognition is achieved in accordance with Section 4.5.2 of this 464
criteria for Seismic Design Categories C through F, a statement indicating that recognition of 465
raised-deck systems installed in structures assigned to Seismic Design Categories A through F 466
is permitted in locations having a maximum SDS value based on testing. A description of the 467
raised-deck system assembly(s) qualified through shake-table testing shall be included in the 468
evaluation report. 469
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6.7 When the raised-deck system is installed over an existing roof assembly, the roof fire 470
classification (Class A, B or C) shall be stated, as determined through testing in accordance 471
with Section 3.7 of this criteria. 472