April 18, 2018 PARTIES INTERESTED IN RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES OR EXTERIOR SUPPORTING STRUCTURES

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1 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 (DW/YM) Dear Colleague: Hearing Information: Tuesday, June 5, :00 am Hilton Los Angeles Airport 5711 West Century Boulevard Los Angeles, CA (310) 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

2 2 assemblies or exterior supporting structures to provide a level walking surface. The raiseddeck 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 D a, ASTM D (2000) ε1 ; ASTM E661-03; ASTM G154-06; ASTM G155-05a; and DOC PS Revise definitions mentioned in Section 1.4; and included new Section to define Accessory Components. 3. Revise Section to include new section regarding withdrawal (pull-out and pullthrough, as applicable) and lateral resistance of mechanical fasteners into plastic material. 4. Revise Section 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.

3 3 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 to 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, 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, 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, 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,

4 4 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) , extension 3272, or Yamil Moya, Senior Staff Engineer, at extension You may also reach us by at es@icc-es.org. Yours very truly, DW:YM/raf Encl. cc: Evaluation Committee Danny Wong, P.E. Staff Engineer

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8 (800) (562) 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 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.

9 Page 2 April 2018 PROPOSED ACCEPTANCE CRITERIA FOR RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES OR EXTERIOR SUPPORTING STRUCTURES INTRODUCTION 1.1 Purpose: The purpose of this acceptance criteria is to establish requirements for raiseddeck systems installed over roof assemblies or exterior supporting structures to be recognized in an ICC Evaluation Service, LLC (ICC-ES), evaluation report under the 2015 and 2012 International Building Code (IBC). Bases of recognition are IBC Section This criteria specifies the test methods, performance and installation requirements, for raised-deck systems that are to be recognized by ICC-ES, since such requirements are not addressed by the code. 1.2 Scope: This criteria is applicable to raised-deck systems installed over roof assemblies or exterior supporting structures. Each raised-deck system consists of deck panels/pavers supported by pedestals placed directly on roof assemblies or exterior supporting structures, to provide a level walking surface. Pedestals can be adjusted to various heights or installed at a fixed height. The pedestals need not be mechanically or adhesively attached to the supporting structure. The raised-deck system comprised of the deck panels/pavers and pedestals must be restrained on all sides against horizontal movement using a perimeterrestraining system and along any ramps and/or walkway areas. 1.3 Codes and Referenced Standards: Where standards are referenced in this criteria, these standards shall be applied consistently with the applicable code upon which compliance is based and 2012 International Building Code (IBC), International Code Council.

10 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page ASCE/SEI 7-10, Minimum Design Loads for Buildings and Other Structures, with Supplement No. 1 (-10 for the 2012 IBC), American Society of Civil Engineers/Structural Engineering Institute ASTM D638-14, Standard Test Method for Tensile Properties of Plastics, ASTM International ASTM D790-03, Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials, ASTM International ASTM D a, Standard Test Methods for Evaluation Properties of Wood-base Fiber and Particle Panel Materials, ASTM International ASTM D e1, Test Method for Wood Preservatives by Laboratory Soil-Block Cultures, ASTM International ASTM D (2000) ε1, Test Methods for Mechanical Fasteners in Wood, ASTM International ASTM D , Test Method for Accelerated Laboratory Test of Natural Decay Resistance of Woods, ASTM International ASTM D , Standard Test Method for Laboratory Evaluation of Wood and Other Cellulosic Materials for Resistance to Termites, ASTM International ASTM E (-08a for the 2012 IBC), Test Methods for Surface Burning Characteristics of Building Materials, ASTM International ASTM E (-07a for the 2012 IBC), Test Methods for Fire Tests of Roof Coverings, ASTM International.

11 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page ASTM E661-03, Standard Test Method for Performance of Wood and Wood- Based Floor and Roof Sheathing Under Concentrated Static and Impact Loads, ASTM International ASTM E (Reapproved 2015), Standard Test Method for Conducting Transverse and Concentrated Load Tests on Panels Used in Floor and Roof Construction, ASTM International ASTM G154-06, Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Nonmetallic Materials, ASTM International ASTM G155-05a, Standard Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Metals, ASTM International AWPA E1-06, Standard Test Method for Laboratory Evaluation to Determine Resistance to Subterranean Termites, American Wood-Protection Association AWPA E10-07, Standard Test Method of Testing Wood Preservatives by Laboratory Soil-Block Cultures, American Wood-Protection Association Recommended Test Procedures for Access Floors, Ceilings and Interior Systems Construction, (CISCA), PS 1-09, Structural Plywood, United States Department of Commerce PS 2-10, Performance Standard for Wood-Based Structural Use Panels, United States Department of Commerce UL (with Revisions through September 2010) (-08 for the 2012 IBC), Standard for Test for Surface Burning Characteristics of Building Materials, Underwriters Laboratories, LLC.

12 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page UL (with Revisions through October 2008) (-04 for the 2012 IBC), Standard Test Methods for Fire Tests of Roof Coverings, Underwriters Laboratories, Inc ICC-ES Acceptance Criteria for Sandwich Panel Adhesives (AC05) ICC-ES Acceptance Criteria for Seismic Certification by Shake-table Testing of Nonstructural Components (AC156). 1.4 Definitions: Raised-deck System: An assembly installed over a roof assembly and/or exterior supporting structure consisting of pedestrian deck panels/pavers mounted on pedestals using other accessory components, and mechanical fasteners and/or adhesives as required by the manufacturer for attaching deck panels/pavers to pedestals and other accessory components Pedestrian Deck Panels/Pavers: Pedestrian deck panels/pavers under this criteria are manufactured from materials such as naturally durable wood and non-naturally durable wood, ceramic, stone, or concrete and shall be suitable for exterior applications. The deck panel/paver specifications must be included in the evaluation report. Evidence of compliance with the applicable provisions in the code and the evaluation report shall be submitted to the code official Pedestal: A fixed or adjustable-height support column composed of a plastic support base, plastic vertical structural element, and a plastic load bearing top cap/surface. The pedestal components must be manufactured under an approved quality control program Accessory Components: These components are used in the installation of pedestals and deck panels/pavers of the raised-deck system. These components are made of either plastic or metal material. These components may be used to provide lateral bracing of

13 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page the pedestals, vertical support, leveling the pedestal, and to restrain the deck panel/paver to the top of the pedestal. 2.0 BASIC INFORMATION 2.1 General: The following information shall be submitted: Product Description: Deck Panels/Pavers: Complete information concerning materials, weight, dimensions, specifications, and the manufacturing process. Specifications for cementitious materials (e.g. concrete pavers) shall include 28-day compressive strength (f c ), impact resistance, and density Pedestals: Components used in the supporting structure shall be defined. Complete information concerning dimensions, specifications, manufacturer s installation instructions, and the manufacturing process of the pedestals shall be provided Connections: Connections (mechanical fasteners) shall be detailed or sufficiently described. Fasteners used in the assembly shall be specified for system positioning (e.g. panel/paver attachment to plastic top cap/surface). Information regarding the mechanical fasteners shall be provided as follows: a. Whether the fastener is a commodity fastener or a proprietary fastener. b. Fastener name and designation, as applicable. c. Fastener dimensions. d. Withdrawal (pull-out and pull-through, as applicable) and lateral resistance of mechanical fasteners into plastic material based on requirements described in Section 3.3 of this criteria.

14 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page e. For proprietary fasteners, provide the following: name of the manufacturer; manufacturer s model or catalog number; technical drawing showing the fastener dimensions, including manufacturing tolerances; material specifications, including chemical and mechanical properties and protective (corrosion) coating requirements Adhesives (Optional): Where recognition is sought for adhesives that are used to adhere to either the pedestal to the panel/paver or to adhere the vertical structural element of the pedestal to its support base and top cap, the type(s) of adhesives used shall be described. Information shall cover commercial stock numbers, specifications, assembly conditions, application instructions, pot life, storage temperature, and the minimum cure time when applied Installation Instructions: Drawings or installation details, limitations, and a description of how the product is to be installed. At a minimum, the instructions should indicate the layout of the pedestals, maximum and minimum pedestal heights, perimeter restraint details, panel/paver installation over pedestals and details on the repair and replacement of pedestals and panel/pavers Packaging and Identification: A description of the method of packaging and identifying of deck panel/pavers, pedestals, and accessory components. Identification provisions shall include the manufacturer s name, the product name, the manufacturing date, the evaluation report number and the name or logo of the inspection agency. A copy of the installation instructions, as packaged with the product, shall be submitted Field Preparation: A description of the methods for assembling the pedestals (base support and top cap to vertical structural element), field-cutting and trimming pedestals and/ or

15 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page deck panel/pavers; adhesive preparation and placement; fastener placement; and list any accessory components required for installation. 2.2 Testing Laboratories: Testing laboratories shall comply with Section 2.0 of the ICC-ES Acceptance Criteria for Test Reports (AC85) and Section 4.2 of the ICC-ES Rules of Procedure for Evaluation Reports. 2.3 Test Reports: Test reports shall comply with AC85. The test reports shall be in sufficient detail to identify specimen properties. The testing agency shall verify and report dimensions, weight, density, chemical formulation, treatment, moisture content and other relevant physical characteristics of the major components. The testing laboratory shall also verify and report the manner of installation. 2.4 Product Sampling: Sampling of the test specimens for tests under this criteria shall comply with Sections 3.1 and 3.3 of AC Qualification Test Plan: A qualification test plan shall be submitted to and approved by ICC-ES staff prior to any testing being conducted. 3.0 TEST AND PERFORMANCE REQUIREMENTS 3.1 Pedestals: The following tests shall be conducted on representative samples of the plastic material used in the Raised-deck system (such as the support base, top cap and vertical structural element). Where indicated below, the requirements shall also apply to accessory components used with the pedestals. Pedestal assembly manufacturers which only provide the plastic support base and top cap, must also include recognition of the vertical structural elements representative of the materials used in the tests in their quality control documentation:

16 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page Plastic Tests for Pedestals and Accessory Components: Plastic materials used in the production of pedestals and accessory components shall comply with the following requirements IBC Section , as shown in Sections and below: The plastic material shall have a self-ignition temperature of 650F or greater when tested in accordance with ASTM D1929 at the maximum thickness intended for use The plastic material shall have a smoke-developed index not greater than 450 where tested in the manner intended for use in accordance with ASTM E84 or UL723; or a maximum smoke density rating not greater than 75 where tested in the thickness intended for use in accordance with ASTM D2843 and shall conform to Class CC1 or CC2 when tested in accordance with ASTM D635 at the thickness intended for use General Weathering Testing: Plastic materials used in the pedestal system including accessory components shall comply with the requirements shown in Sections thru General: Five specimens shall be exposed to ultraviolet light in accordance with Section of this criteria, and five specimens shall be held as control specimens. After exposure, both the exposed specimens and the control specimens shall be tested in accordance with ASTM D790 and/ or ASTM D Ultraviolet Light Exposure: Exposure to ultraviolet light shall follow either ASTM G154 or ASTM G155 practices for 2000-hours Conditions of Acceptance: Loss in flexural and/or tensile properties resulting from the ultraviolet light exposure shall be +/-10% of the average strength of the control specimens. If the change exceeds 10%, the pedestal s allowable axial load determined in Section 4.3 shall be further reduced by the amount in excess of 10%.

17 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page Pedestrian Deck Panels/Pavers Requirements: Deck panels/pavers, shall be manufactured from durable materials, such as a naturally durable wood, ceramic, stone, or concrete. In cases where the evaluation report holder only supplies the pedestal system, the evaluation report must include a description of the panel/pavers used in the applicable qualification tests of the raised-deck system and a statement indicating that the panels/pavers used for specific projects must be installed to the satisfaction of the code official. For recognition of wood deck panels/pavers not manufactured from wood considered a naturally durable wood, as defined in IBC Section 2302, non-naturally durable wood deck panel/paver materials will be subjected to the requirements in Section Ceramic, Stone, and Cementitious Panels/Pavers: Impact Resistance: Each ceramic, stone, or cementitious panel/paver shall demonstrate resistance to drop impact forces when installed in a raised-deck system application in accordance with Section 8 of CISCA testing procedure with a minimum impact weight of ten pounds Conditions of Acceptance: The panel/paver and support backer, if used, shall be able to support the impact weight of ten pounds when tested in accordance with Section without collapsing under its own weight. Examination of the panel/ paver specimen and any support backer shall reveal impact resistance such that a tile which is tested until failure as defined by Section 8 of the CISCA testing procedures does not collapse after impact under its own weight when pedestal supported Non-Naturally Durable Wood Panels/pavers: Fungal Decay Resistance: The wood material shall demonstrate resistance to fungal decay in accordance with ASTM D1413, ASTM D2017, or AWPA E10.

18 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page Conditions of Acceptance: Examination of test blocks shall reveal decay resistance equivalent to that of heartwood of naturally durable wood used in identical applications, as determined by visual inspection and average weight loss. Naturally durable woods are defined IBC Section Termite Resistance: Testing in accordance with AWPA E1 or ASTM D3345 shall be used for evaluation on resistance to termite attack of wood material Conditions of Acceptance: Visual inspection of the test specimens shall demonstrate resistance to termite attack equivalent to that of preservative-treated wood or the heartwood of naturally durable wood used in identical applications Surface-Burning Characteristics of Wood Panels/pavers: Wood Panel/pavers shall have a minimum Class B flame-spread and smoke-developed indexes when tested in accordance with ASTM E84 / UL 723 at the maximum thickness for which recognition is sought. 3.3 Mechanical Fasteners Holding Test: A minimum of five replicate test specimens, which consists of the pedestal and mechanical fastener, shall be subjected to withdrawal (pullout and pull-through, as applicable) and lateral resistance tests in accordance with ASTM D1761 or ASTM D1037, to determine the allowable capacity of the connection. Where accessory components are fastened to pedestals, the fastener connection shall also be determined under this section. Exception: When full scale dynamic wind testing is conducted in accordance with Section and/or full scale dynamic seismic testing is conducted according to Section ; and an analysis is submitted establishing the capacity of the fastener used in testing and installation; then the tests referenced in Section 3.3 are not required.

19 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page Conditions of Acceptance: Allowable capacities of the fasteners shall be the average ultimate load divided by a factory safety of three (3) and shall be further reduced by the amount in excess of 10% if requirements under Section of this criteria are not met. The allowable capacity of the fastener connection shall not exceed the demand resulting from wind and seismic forces. 3.4 Structural Requirements for Raised-deck Systems: General: Raised-deck systems shall withstand applicable uniform loads specified in IBC Table , as well as combined load effects of other applicable gravity loads defined in IBC Chapter 16, such as snow and live loads. The allowable uniform load capacity of the raised-deck system is based on the lowest of the capacity established from Sections and The concentrated live load performance shall be established by complying with the requirements in Section Ultimate Test Load: When a minimum three replicate test specimens are tested, and the coefficient of variation is greater than 15 percent, the least recorded test load value shall be used as the ultimate test load; where the coefficient of variation does not exceed 15 percent, the average value shall be used as the ultimate test load. When five or more replicate test specimens are tested, the average value shall be used as the ultimate test load, regardless of the coefficient of variation. Testing must comply with Sections , , and of this criteria Uniform Load Test for Panels/Pavers Supported by Pedestals: Testing shall be conducted in accordance with Section 4.1 of this criteria. The recognized allowable loads shall be the lesser of the following:

20 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page a. The maximum deflection of panels/pavers, under allowable live loads specified in IBC Table , shall be 1 / 360 of the span in accordance with IBC Table b. A minimum factor of safety of 3 shall be applied to the ultimate test load, as determined in Section of this criteria, to establish the allowable load Pedestal Axial Load: The allowable pedestal axial load shall be the ultimate test load as determined in Section of this criteria, divided by a safety factor of 3 and shall be further reduced by the amount in excess of 10% if requirements under Section of this criteria are not met. Testing shall be conducted in accordance with Section 4.3 of this criteria Foot Traffic Concentrated Static and Impact Test Performance: The deck panels/pavers shall resist the ultimate concentrated static and concentrated static following impact performance loads of 550 lbf and 400 lbf, respectively, as shown in the Single Floor at 24 inches on center end use span rating in Table 2 of PS-2. Testing must be conducted in accordance with Section 4.2 of this criteria. A minimum of three replicate test specimens shall be tested, where the ultimate test load shall be as determined in Section of this criteria. The test specimens shall include the deck panels/pavers and pedestals spaced 24 inches on center. The applied concentrated static and impact loads shall be located on the most critical locations of the panel/ paver in accordance with Section 4.2 of this criteria. 3.5 Wind Resistance: If an engineering study based on in-field studies or a history of performance over a minimum ten-year period is signed and sealed by a registered design professional, recognition of the raised-deck system shall be granted for use in areas subjected to a maximum ultimate design wind speed of 115 mph (185 km/h) on Category II structures having a mean roof height of 33 feet (10 m) in Exposure B areas.

21 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page Exception: Recognition of raised-deck systems beyond these limits may be granted, provided full-scale dynamic wind uplift tests are conducted in accordance with Section of this criteria, and data analysis of the test results shall be conducted and prepared as determined by a registered design professional. To assure acceptance by ICC-ES, test procedures and data analysis methods used shall be submitted to ICC-ES for review and approval prior-to testing. Testing and data analysis of the test results shall be conducted on each raised-deck system for which recognition is sought, unless determined by a registered design professional and ICC-ES evaluation staff to be qualified based on testing of a representative material (i.e. panel/paver density, dimensions, installation method, etc.). Raised-deck systems afforded this exception shall be evaluated by a registered design professional to withstand applicable wind loads specified in ASCE/SEI 7 Chapters 26 through 30, as well as combined load effects of other applicable gravity loads defined in IBC Chapter 16, such as live and snow loads. 3.6 Seismic Resistance: Recognition of raised-deck systems shall be limited to structures assigned to Seismic Design Category (SDC) A or B, and the raised-deck systems having a component importance factor of 1.0 as defined per Sections and of ASCE/SEI 7. Exception: Recognition of raised-deck systems installed with structures assigned to Seismic Design Categories C through F require full-scale dynamic tests conducted in accordance with Section of this criteria and data analysis of the test results shall be conducted and prepared by a registered design professional. Test procedures and data analysis methods used shall be submitted to ICC-ES for review and approval prior

22 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page testing. Testing and data analysis of the test results shall be conducted on each raiseddeck system for which recognition is sought. 3.7 Roof Fire Classification for Raised-deck Systems: General: When installed above a roof, roof fire classification testing in accordance with ASTM E108 or UL 790 shall be conducted when recognition is sought for new construction and, if applicable, for installation of the raised-deck system installed over an existing Class A, Class B or Class C classified roof covering system. Testing shall be conducted, with the roof deck and raised-deck system, at the minimum slope of ¼:12 (2 percent slope). For greater slopes, testing shall be conducted at the maximum slope for which recognition is sought New and Existing Construction with a Noncombustible Roof Deck: When the raised-deck system is installed directly over a code-complying noncombustible (concrete or metal) roof deck, spread-of-flame testing shall be conducted on the raised-deck system(s) representative of the system(s) for which recognition is sought. Specifically, each panel/paver material is to be separately qualified by testing unless determined by ICC-ES to be qualified based on testing of a representative material New and Existing Classified Roof Covering with a Noncombustible Roof Deck: When the raised-deck system is installed over a code-complying classified (Class A, Class B or Class C) roof covering installed over a noncombustible (concrete or metal) roof deck, spread-of-flame testing shall be conducted on the combined raised-deck system and classified roof covering representative of the systems for which recognition is sought. Specifically, each panel/paver material is to be separately qualified by testing unless determined by ICC-ES to be qualified based on testing of a representative material.

23 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page New and Existing Classified Roof Covering with a Combustible Roof Deck: When the raised-deck system is installed over a code-complying classified (Class A, Class B or Class C) roof covering installed over a combustible (plywood) roof deck, spread-offlame, intermittent-flame and burning-brand testing shall be conducted on the combined raised-deck system and classified roof covering representative of the systems for which recognition is sought. Specifically, each panel/paver material is to be separately qualified by testing unless determined by ICC-ES to be qualified based on testing of a representative material. Testing shall be conducted on specimens constructed in accordance with ASTM E108 or UL 790 with a roof deck made of minimum 15 / 32 -inch-thick (11.9 mm), A-C, Group 1, exterior plywood with face and back veneers of Douglas fir marked as conforming to PS 1 for softwood plywood. If recognition is sought for combustible roof deck materials other than plywood, the qualification test plan required by Section 2.5 of this criteria must address each combustible roof deck material. 3.8 Adhesives (Optional): Where recognition is sought for adhesives used to adhere to either the pedestal to the panel/paver or the vertical structural element of the pedestal to its support base and top cap, testing shall be in accordance with Section 4.4 of this criteria to establish the durability of the adhesive. Testing is required for each adhesive for which recognition is sought. Specimens tested after being subjected to adverse conditions, such as accelerated aging or oxidation, shall not exhibit a strength loss of more than 20 percent when the average results are compared to the average results for the control specimens. 4.0 TEST METHODS 4.1 Uniform Load Test on Panels/Pavers Supported by Pedestals: A minimum of three replicate test specimens shall be used. Testing shall be conducted in accordance with Section

24 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page of ASTM E 2322 and Section 7 of CISCA testing procedures, with the following clarifications: a. Load application and deformation readings shall be in accordance with Section 6.3 of ASTM E2322. b. Air bags shall fully contact the test specimens during testing. c. Bearing area of the test specimens shall accurately represent the intended field installation. 4.2 Foot Traffic Concentrated Static and Concentrated Following Impact: Concentrated load tests shall be conducted in accordance with ASTM E661, Procedure A with the following modifications: The deck panel/paver and pedestal system shall be installed in a manner representative of its intended use The loading disk for concentrated load shall be 3-inch diameter The drop bag weight for impact shall be 30 lbs Impact shall be 75 lbf-ft. 4.3 Axial Load Test on Pedestals: Axial load tests shall be conducted in accordance with Section 5 of CISCA testing procedures on a minimum of three replicate test specimens of each type of pedestal for which recognition is sought. Pedestals shall be tested at conditions representative of their installation. Test specimens shall consider testing at the maximum pedestal height and including slope compensating accessory components. 4.4 Adhesive Tests (Optional): Where recognition is sought for adhesives used to adhere either the pedestal to the panel/paver or the vertical structural element of the pedestal to its

25 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page support base and top cap; testing shall be conducted under Sections 4.4.1, 4.4.2, and of this criteria. Test specimens, conditioning, and methods shall comply with the ICC-ES Acceptance Criteria for Sandwich Panel Adhesives (AC05), as indicated in the following sections. Materials which are more representative of typical installation than those described in Section 5.0 of AC05 may be used in test specimens. A set of specimens shall consist of five replicate specimens Block Shear: Three sets of specimens shall be prepared. The control set shall be conditioned in accordance with Section 6.0 of AC05, and tested in accordance with Section 8.3 of AC05. The second set shall be subjected to accelerated aging in accordance with Section 7.1 of AC05, conditioned in accordance with Section 6.0 of AC05, and tested in accordance with Section 8.3 of AC05. The third set shall be subjected to an oxidation process in accordance with Section 8.7 of AC05 and tested in accordance with Section 8.3 of AC Bond Strength: Two sets of specimens shall be prepared. The control set shall be conditioned in accordance with Section 6.0 of AC05, and tested in accordance with Section 8.5 of AC05. The second set shall be subjected to accelerated aging in accordance with Section 7.1 of AC05, conditioned in accordance with Section 6.0 of AC05, and tested in accordance with Section 8.5 of AC Mold: Each adhesive shall be evaluated for mold resistance in accordance with Section 8.8 of AC Chemical Reagent (Optional): Where recognition is sought for resistance to chemical reagents, testing shall be conducted in accordance with Section 8.9 of AC05 for each chemical reagent. 4.5 Dynamic Load Tests (Optional):

26 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page Wind Uplift Tests on Raised-deck system: Wind Uplift Tests: Testing shall be in accordance with Section 31 of ASCE/SEI 7, to determine Ultimate and Allowable wind uplift loads for the raised-deck system and panels/pavers; analysis of test data shall be signed and sealed by registered design professional. A test plan shall be submitted to ICC-ES staff prior-to testing for approval. Testing shall be conducted on each panel/paver and pedestal support system for which recognition is sought, unless determined by a registered design professional and ICC-ES evaluation staff to be qualified based on testing of a representative material (i.e. dimensions, panel/paver density, physical strength, etc.). Structures should be evaluated by a design professional following ASCE/SEI 7 procedure to ensure the project will not experience any loads which exceed the loads accepted by the ICC-ES evaluation staff or code official Seismic Tests on Raised-deck system: Seismic Load Tests: Testing shall be in accordance with the applicable provisions in Section 6.0 of the ICC-ES Acceptance Criteria for Seismic Qualification by Shake-table Testing of Nonstructural Components (AC156). In accordance with Section 4.3 and of AC156, the Required Response Spectrum (RSS) shall be based on the maximum value of design spectral response accelerations, SDS, for which recognition is sought. The z/h parameter shall be taken as 1.0. In accordance with Section 4.3 of AC156, the seismic parameters used for shake-table testing shall be described in the test report. Analysis of test data shall be signed and sealed by registered design professional Test Specimens: In order to rely on limited testing to recognize untested raised deck systems, as required by AC156, Section 4.5, including subsections through 4.5.5, tested assemblies shall be the assemblies that offer the least seismic capacity. Test specimen

27 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page shall include the raised-deck system components that will be recognized in the evaluation report. Test specimen shall consider, but is not limited, to the following conditions: roof system supporting the raised deck system (including roof covering and slope); maximum pedestal height and bracing conditions; panel/paver types (mass and connection of deck panel/paver to pedestal); raised-deck system mass; and raised-deck system perimeter restraint Conditions of acceptance for shake-table testing: In accordance with AC156, Section 6.0, including subsections 6.2, 6.3, 6.6, 6.7 and 6.8.1, ceiling assemblies subjected to the seismic demand described in Section of this criteria shall satisfy the requirements for structural integrity and functionality (or operational requirements). The following specific requirements shall be satisfied: The panels/pavers and the raised-deck system should not have any damage that will prevent serviceability for pedestrian live loading Major damage, such as panel/paver buckling, panel/paver dislodging from pedestals, crushing or dislocation of deck panels/pavers and pedestals that constitutes a tripping hazard shall be constituted as unacceptable behavior The perimeter restraints should maintain its structural integrity and its function after the shake-table testing Minor damage to the raised-deck system provided it can be repaired so it can retain its function after the repair. 5.0 QUALITY CONTROL 5.1 The products shall be manufactured under an approved quality control program with inspections by ICC-ES or by a properly accredited inspection agency that has a contractual relationship with ICC-ES.

28 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page Quality documentation complying with the ICC-ES Acceptance Criteria for Quality Documentation (AC10) shall be submitted. A qualifying inspection shall be conducted at each manufacturing facility when required by the ICC-ES Acceptance Criteria for Inspections and Inspection Agencies (AC304). 5.3 Ongoing follow-up inspections, by ICC-ES or by a properly accredited inspection agency that has a contractual relationship with ICC-ES, are required under this acceptance criteria. 6.0 EVALUATION REPORT RECOGNITION The evaluation report shall include the following: 6.1 Basic information referenced in Section 2.1 of this criteria, including a description of the raised-deck system s components, installation instructions and requirements, and product identification information. 6.2 A statement indicating that the ability of the existing roof structure/assembly or exterior supporting structure to resist the applicable loads imposed by the raised-deck system must be demonstrated by a registered design professional to the satisfaction of the building official. 6.3 A statement indicating that the ability of the existing roof structure/assembly or exterior supporting structure to provide adequate drainage after installation of the raised-deck system must be demonstrated by a registered design professional to the satisfaction of the code official. 6.4 A statement indicating that a perimeter containment must be installed around the perimeter of the raised-deck system and at all ramp and/ or walkway areas as determined by a registered design professional. The perimeter containment must comply with requirements in the evaluation report, and must be designed by a registered design professional, and subjected to approval of the code official.

29 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page A statement indicating that recognition of the raised-deck system is limited to areas subject to a maximum ultimate design wind speed of 115 mph (185 km/h) on Risk Category II structures, having a mean roof height of 33 feet (10 m) in Exposure B areas; in addition to the historical performance engineering study conducted and prepared by a registered design professional to validate claims of the statement (Optional): For recognition beyond a maximum ultimate design wind speed of 115 mph (185 km/h) on Risk Category II structures, having a mean roof height of 33 feet (10m) in Exposure B areas; the acceptable design wind uplift pressures of the raised-deck system derived from testing and subsequent data analysis shall be conducted and shall not exceed the allowable wind uplift pressure of the existing roof assembly. Testing data analysis shall be conducted by a registered design professional and all related documents shall bear the signature of a registered design professional. Acceptable design wind pressures shall be clearly identified as Strength Design values or Allowable Stress Design values. 6.6 A statement indicating that recognition of the raised-deck system is limited to structures assigned to Seismic Design Categories A and B, and the raised-deck systems having a component importance factor of 1.0, and recognition of structures assigned to Seismic Design Categories C through F is outside the scope of the evaluation report (Optional): When recognition is achieved in accordance with Section of this criteria for Seismic Design Categories C through F, a statement indicating that recognition of raised-deck systems installed in structures assigned to Seismic Design Categories A through F is permitted in locations having a maximum S DS value based on testing. A description of the raised-deck system assembly(s) qualified through shake-table testing shall be included in the evaluation report.

30 RAISED-DECK SYSTEMS INSTALLED OVER ROOF ASSEMBLIES Page When the raised-deck system is installed over an existing roof assembly, the roof fire classification (Class A, B or C) shall be stated, as determined through testing in accordance with Section 3.7 of this criteria.