December 29, 2011 PARTIES INTERESTED IN TRANSLUCENT FIBERGLASS REINFORCED PLASTIC (FRP) FACED PANEL WALL, ROOF AND SKYLIGHT SYSTEMS

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1 December 29, 2011 TO: PARTIES INTERESTED IN TRANSLUCENT FIBERGLASS REINFORCED PLASTIC (FRP) FACED PANEL WALL, ROOF AND SKYLIGHT SYSTEMS SUBJECT: Proposed Revisions to the Acceptance Criteria for Translucent Fiberglass Reinforced Plastic (FRP) Faced Panel Wall, Roof and Skylight Systems, Subject AC R2 (BJ/DP) Dear Colleague: Hearing Information: Wednesday, February 15, :00 am Sheraton Gateway Hotel 6101 West Century Boulevard Los Angeles, California (888) You are invited to comment on proposed revisions to AC177, which will be discussed at the Evaluation Committee hearing noted above. The criteria is being revised to reference the 2012 and 2009 International Building Code (IBC). In addition, we received a letter with proposed revisions from Major Industries (copy enclosed). The initial proposal for revisions was submitted under the Alternative Criteria process in August 2011 for comments. Comments received from Kalwall Corporation are also enclosed. The following revisions to AC177 are being proposed: 1. Update the standards to the versions -referenced in the 2012 and 2009 IBC. 2. Add an alternative test procedure for weather exposure in Section 4.1.2, Weatherometer Testing. 3. Revise the conditions of acceptance for the tensile and elongation tests in Section 4.1.4, and the flexural tests in Section Add Procedure B of ASTM E 330 for uniform transverse load testing. 5. Delete temperature cycling tests in Section Add ASTM E331 as an alternate test procedure for water penetration testing in Section

2 AC R Revise the conditions of acceptance for the ignition properties and rate of burn testing in Section Revise the requirements for the roof classification tests in Section Add wall and ceiling interior finish requirements from the 2009 and 2012 IBC. We are particularly interested in your input on the proposed changes in particular, the following. 1. The applicability of ASTM G 90, Cycle 1, as an alternate for the weather exposure of the specimens, as compared to ASTM D 2565, Cycle Whether the new provisions allowing a lower acceptance for tensile and elongation tests based on comparison, but proportionately decreasing the allowable transverse load for those assemblies falling below the 90 percent threshold, will be sufficient for these product applications. The proposal is based on similar requirements in the Acceptance Criteria for Polymer-based and Polymer-modified Exterior and Interior Wall Cladding (AC92). We would like to see additional justification based on a comparison of use of polymer-based exterior wall cladding versus the use of FRP panels. 3. The applicability of adding ASTM E 330 as an alternate test procedure for transverse loading for these product applications, since some of the applications covered by this criteria extend beyond wind loading (more sustained loads). 4. Are freeze/thaw tests sufficient to determine the effects of temperature change without the additional tests for temperature cycling? It is our opinion that the temperature cycling tests in Section 4.9 needed to determine the effects of temperature change are needed for this product for the effects such as varying coefficients of expansion. 5. Will ASTM E 331 be a sufficient test for water penetration, and can the four cycles of testing be eliminated? The proponent indicates that ASTM E 331 is a more stringent test. However, we believe more justification is needed for the elimination of the requirement for four cycles of testing. 6. Further justification is needed for the change in the conditions of acceptance for the rate of burn and ignition properties testing, in determining the fire-retardant properties of the FRP panel facings. We are of the opinion that the conditions of acceptance for the rate of burn and ignition properties testing are not simply for code acceptance, but to show preservation of these qualities over time. 7. Further justification is requested for reducing the requirement for the ASTM E 108 burning brand tests to only require a Class A burning brand, in lieu of both Class A and Class B burning brands. 8. We are not in agreement with removing the requirement for a second burning brand test in Section This will conflict with the requirements of ASTM E 108

3 AC R Requirements for interior finishes are required in Section , and exterior uses are required in Section , of the 2009 and 2012 IBC. 10. A question has been raised as to whether the roof panels should be evaluated for the 300 pound concentrated load noted in IBC Section and Table If so, a provision needs to be added to the criteria to address this issue. Please note that the ICC-ES Acceptance Criteria for Sandwich Panels (AC04) contains a section concerning this issue which reads as follows: For roof panels evaluated under the IBC, roof panel spans must be evaluated for uniform dead load combined with the 300-pound (1334 N) concentrated design live load required by IBC Section and Table When compliance is demonstrated by load testing, the allowable concentrated load determined in accordance with Sections through shall exceed the required 300-pound concentrated design live load, with the required safety factor also applied to the uniform dead load. At the design concentrated live load and uniform dead load, the tested panels shall comply with the deflection limitations noted in IBC Table Should the committee approve the proposed revisions to the criteria, the ICC-ES staff will recommend a mandatory compliance date of March 1, 2013, to allow report holders time to complete the new testing under ASTM E 84. This means that existing report holders, under this criteria, will need to show their compliance with the new provisions before the compliance date, or face mandated revisions or cancellation or their reports. Also, in order to ensure that ICC-ES has sufficient time to review data submittals, the ICC-ES staff will ask all existing report holders to submit data packages, showing compliance with the revised criteria, no later than, November 1, 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: a. You should submit these to the Los Angeles business/regional office. b. Comments received by January 23, 2012, will be forwarded to the committee before the meeting, and also will be posted on the ICC-ES web site shortly after the deadline for submission. c. ICC-ES will also post to the web site, on February 9, 2012, comments that miss the above deadline but are received up to ten days before the meeting. On this same date, memos by the ICC-ES staff, responding to public comments, will be posted to the web site.

4 AC R2 4 d. If you miss the deadline for materials to be forwarded to the committee, we can still have your comments available at the hearing if you provide 35 copies, collated, stapled, and three-hole-punched, either at the meeting itself or to the Los Angeles business/regional office by February 9, e. Proposed criteria, written public comments, and responses by ICC-ES staff will be available at the meeting on a limited number of CDs for uploading to computers. Also, while ICC-ES will not provide any printed copies, the hotel business center will have hard copies for photocopying. 2. Regarding verbal comments: a. If you plan to speak for more than fifteen minutes, or if you have any special needs related to a presentation, please notify ICC-ES staff as far as possible in advance. We will provide a computer, projector, and screen to anyone wishing to make a visual presentation, which in most cases should be in PowerPoint format. b. Presentations, and any other visual aids for viewing at the meeting (transparencies, slides, videos, charts, etc.), must be provided in advance to ICC-ES, in a medium that can be retained with other records of the meeting. 3. Keep in mind that all materials submitted for committee consideration are part of the public record, and will not be treated as confidential. 4. Please do not try to communicate with any 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 You may also reach us by at es@icc-es.org. Yours very truly, BJ/raf Encl. cc: Evaluation Committee Barry A. Johnson, PE Senior Staff Engineer

5 7120 Stewart Avenue, PO Box 306 Wausau, WI Ph , Fax Web May 18, 2011 Mr. Barry A. Johnson, PE ICC Evaluation Service 900 Montclair Rd, Suite A Birmingham, AL Dear Barry: Following our recent discussions regarding AC177, we request the following: First, we propose the addition of an accelerated outdoor weathering procedure using concentrated natural sunlight (e.g. ASTM G90) as another alternative procedure under section Of the current test methods listed under AC177, xenon arc testing is the most consistent and reproducible, though the light emitted is not true to natural sunlight. The current alternative test method (i.e. five years in Florida) is the most accurate representation of the effects of time and weather on the panels. The problem with this test method, however, is the duration of time required to complete the weathering. It is unrealistic to believe that products will not have, even minor, technological material advancements over the duration of testing and beyond. This is why we propose the accelerated outdoor weathering procedure using concentrated natural sunlight such as ASTM G90. The benefits to this approach include the use of natural sunlight and conditions to weather the product, but in an accelerated time frame. Secondly, we propose the following rewording of sections and Section The test results shall demonstrate that the mean of the ultimate tensile load and the mean of the elongation of both the weathering test and the freezethaw test specimens are at least 60 percent of the mean of the ultimate tensile loads and the mean elongation of the control specimens. If values obtained from the weathering and/or freeze-thaw specimens are less than 90 percent of the control specimens, allowable positive and negative load capacity from Section 4.3 and/or 4.7 of the criteria will be reduced proportionately. Section The test results shall demonstrate that the mean of the ultimate flexural strength of both the weathering test and the freeze-thaw test specimens are at least 60 percent of the mean of the ultimate flexural strength of the control specimens. If values obtained from the weathering and/or freeze-thaw specimens are less than 90 percent of the control specimens, allowable positive and negative load capacity from Section 4.3 and/or 4.7 of the criteria will be reduced proportionately.

6 The wording changes are based on the conditions of acceptance from section of AC92 (Acceptance Criteria for Polymer-Based and Polymer- Modified Exterior and Interior Wall Cladding). AC92 could be considered as the acceptance criteria for the face sheet used in our product, as the testing and conditions of acceptance should be relevant. As an example of this relevance, several of the test procedures and conditions of acceptance are similar if not equal to that in AC177. Section 4.1 of AC92 calls for 2000 hours of exposure in a xenon arc machine, whereas section of AC177 calls for 3000 hours utilizing cycle number two. In this cycle for every eighteen hours of light there is six hours of dark, which equates to 2000 hours of exposure. The conditions of acceptance between section of AC92 and section of AC177 are essentially identical. The freeze-thaw test and conditions of acceptance between sections 4.2 of AC92 and of AC177 are once again essentially identical. And although the test methods called out in the flexural strength sections vary (4.4 of AC92 and of AC177), the values determined should be equivalent. However, the difference that arises between these standards occurs in the conditions of acceptance; AC92 allows for a reduction in the material strength post weathering whereas AC177 does not allow any reduction. AC92 recognized that the majority of polymers experience degradation over time and allowed for a reduction. This methodology resulted in the request for changes in the wording above. Next, we propose the addition of ASTM E330, Procedure B to sections and This change would be consistent with section 4.1 of AC90. Next, we propose the removal of section 4.9 and all subsections. This request is based on the conditions of acceptance, section 4.9.2; the assembly is considered to have passed the test if no crazing, cracking or other deleterious surface changes are noted under 5 magnification. The conditions of acceptance for this section are looking for changes in the surface of the system, which is the exterior fiberglass face sheet. The face sheets are freeze-thaw tested per section which has conditions of acceptance (i.e. section ) that are essentially equal. If this test method and condition of acceptance are to remain, we propose that the requirement of testing complete assemblies be dropped and this section be relevant to only the face sheets. Next, we propose the addition of ASTM E331 to section , as ASTM E331 is the test procedure most commonly specified for architectural grade products, while ASTM E547 is typically specified for residential grade products. As testing for architectural grade products is more stringent than the testing required for residential products we feel that ASTM E331 should be included alongside ASTM E547 in this section. Next, we propose the following change to The test results from the control and exposed specimens shall demonstrate that the self-ignition temperature of the specimens is not less than 650 F (343 C). The majority of polymer products will experience some degree of degradation over the expected service life of the product. As such, the expectation that exposed specimens have a self-ignition temperature not less than control specimens is unrealistic, which is why we have

7 proposed the above change. This change still fulfills the intent of the code (IBC , etc.) while allowing for realistic changes in the material. Finally, we propose the following change to The classification of the specimens (e.g. CC1 or CC2) based on the test results from the control and exposed specimens shall demonstrate that the classification of the exposed specimens does not vary from that of the control specimens. The majority of polymer products will experience some degree of degradation over the expected service life of the product. As such, the expectation that exposed specimens have a rate of burn not greater than the control specimens is unrealistic, which is why we have proposed the above change. This change still fulfills the intent of the code (IBC , etc.) while allowing for realistic changes in the material. Sincerely, Philip Benes Technical Specialist Major Industries, Inc Stewart Avenue Wausau, WI Phone:

8 Rosalind Fazel From: Sent: To: Subject: Attachments: Tuesday, August 23, :16 AM Rosalind Fazel AC177 Comments Comments regarding proposed revisions to AC177 Aug 23.pdf Comments on Criteria AC177. Ken Schmidtchen Kalwall Corp Comments: See attached, thanks. Attachments: Comments regarding proposed revisions to AC177 Aug 23.pdf 1

9 Comments regarding proposed revisions to AC177 August 23, Adding G90 as alternate weathering criteria. The use of any accelerated testing brings an amount of uncertainty to the results - the higher the acceleration, the less likely correlation between the test and real world weathering. The currently specified standard, D2565 includes the elements of UV, heat and moisture in the weathering chamber. There are several variations of G90, and not all of them include the effects of moisture. Further, the suggested wording equivalent to 5 years in Florida is vague. What equivalent UV exposure, total irradiance, or some other metric? It is widely recognized that exposure in one climate, such as the desert of Arizona, does not necessarily provide the same results as equivalent UV exposure in another climate due the variations in humidity, rainfall and temperature. Prior to adding this as an alternate weathering procedure, correlation data should be supplied from a qualified source indicating that the effect on the specimens will be comparable. Rewording and While AC92 might allow for a reduction in strength due to weathering and/or testing, AC16 (Acceptance Criteria for plastic Skylights) does not. This may be a difference in application, walls in AC92 and skylights in AC16. There is definitely a difference in approach between AC92 and AC16 that should be investigated prior to revising AC177. Further, AC177 does allow for a reduction in strength, as long as that reduction lies within the 95% confidence interval based on a Student s t analysis. Delete 4.9 entirely This requirement for the temperature cycling also appears to be taken from AC16. The requirement to determine if the interaction between dissimilar materials the aluminum framing and FRP faced panels in the case of AC177- is deleterious to the materials involved seems reasonable. The evaluation of the tested samples (visual only) is rather basic, but it will easily show if there are interface problems due to fastening, different coefficients of expansion or other issues. This section should remain.

10 (800) (562) A Subsidiary of the International Code Council ICC EVALUATION SERVICE, LLC, RULES OF PROCEDURE FOR THE EVALUATION COMMITTEE 1.0 PURPOSE The purpose of the Evaluation Committee is to monitor the work of ICC-ES, in issuing evaluation reports; to evaluate and approve acceptance criteria on which evaluation reports may be based; and to sponsor related changes in the applicable codes. 2.0 MEETINGS 2.1 The Evaluation Committee shall schedule meetings that are open to the public in discharging its duties under Section 1, subject to Section All scheduled meetings shall be publicly announced. 2.3 Two-thirds ( 2 / 3 ) of the voting Evaluation Committee members shall constitute a quorum. A majority vote of members present is required on any action. 2.4 In the absence of the nonvoting chairmanmoderator, Evaluation Committee members present shall elect an alternate chairman from the committee for that meeting. The alternate chairman shall be counted as a voting committee member for purposes of maintaining a committee quorum and to cast a tie-breaking vote of the committee. 2.5 Minutes of the meetings shall be kept. 2.6 An electronic audio record of meetings shall be made by ICC-ES; no other audio, video, electronic or stenographic recordings of the meetings will be permitted. Visual aids (including, but not limited to, charts, overhead transparencies, slides, videos, or presentation software) viewed at meetings shall be permitted only if the presenter provides ICC-ES before presentation with a copy of the visual aid in a medium which can be retained by ICC-ES with its record of the meeting and which can also be provided to interested parties requesting a copy. A copy of the ICC-ES recording of the meeting and such visual aids, if any, will be available to interested parties upon written request made to ICC-ES together with a payment as required by ICC-ES to cover costs of preparation and duplication of the copy. These materials will be available beginning five days after the conclusion of the meeting but will no longer be available after one year from the conclusion of the meeting. 2.7 Parties interested in the deliberations of the committee should refrain from communicating, whether in writing or verbally, with committee members regarding agenda items. All written communications and submissions regarding agenda items should be delivered to ICC-ES. All such written communications and submissions shall be considered nonconfidential and available for discussion in open session of an Evaluation Committee meeting, and shall be delivered at least ten days before the scheduled Evaluation Committee meeting if they are to be forwarded to the committee. Materials delivered to ICC-ES at least ten days before the scheduled meeting will be posted on the ICC-ES web site ( prior to the meeting. After this time, parties wishing to submit materials for consideration by the Evaluation Committee must deliver a sufficient number of copies as directed by ICC-ES. Consideration of materials not received by ICC-ES at least ten days before the meeting is at the discretion of the Evaluation Committee. Following the meeting, ICC-ES will make all materials considered by the Evaluation Committee available on the web site for a maximum period of one year following the meeting. The committee reserves the right to refuse recognition of communications which do not comply with the provisions of this section. 3.0 CLOSED SESSIONS Evaluation Committee meetings shall be open except that the chairman may call for a closed session to seek advice of counsel. 4.0 ACCEPTANCE CRITERIA 4.1 Acceptance criteria are established by the committee to provide a basis for issuing ICC-ES evaluation reports on products and systems under codes referenced in Section 2.0 of the Rules of Procedure for Evaluation Reports. They also clarify conditions of acceptance for products and systems specifically regulated by the codes. Acceptance criteria may involve a product, material, method of construction, or service. Consideration of any acceptance criteria must be in conjunction with a current and valid application for an ICC-ES evaluation report, an existing ICC-ES evaluation report, or as otherwise determined by the Evaluation Committee. 4.2 Procedure: Proposed acceptance criteria shall be developed by the ICC-ES staff and discussed in open session with the Evaluation Committee during a scheduled meeting, except as permitted in Section 5.0 of these rules Proposed acceptance criteria shall be available to interested parties at least 30 days before discussion at the committee meeting The committee shall be informed of all pertinent written communications received by ICC-ES Attendees at Evaluation Committee meetings shall have the opportunity to speak on acceptance criteria listed on the meeting agenda, to provide information to committee members. 4.3 Approval of acceptance criteria shall be as specified in Section 2.3 of these rules. April 1, 2011 Pg 1 of 2

11 ICC EVALUATION SERVICE, LLC, RULES OF PROCEDURE FOR THE EVALUATION COMMITTEE 4.4 Actions of the Evaluation Committee may be appealed in accordance with the ICC-ES Rules of Procedure for Appeal of Acceptance Criteria or the ICC- ES Rules of Procedure for Appeals of Evaluation Committee Technical Decisions. 5.0 COMMITTEE BALLOTING FOR ACCEPTANCE CRITERIA 5.1 Acceptance criteria may be issued without a public hearing following a 30-day public comment period and a majority vote for approval by the Evaluation Committee when, in the opinion of ICC-ES staff, one or more of the following conditions have been met: 1. The subject is nonstructural, does not involve life safety, and is addressed in nationally recognized standards or generally accepted industry standards. 2. The subject is a revision to an existing acceptance criteria that requires a formal action by the Evaluation Committee, and public comments raised were resolved by staff with commenters fully informed. 3. Other acceptance criteria and/or the code provide precedence for the revised criteria. 5.2 Negative votes must be based upon one or more of the following, for the ballots to be considered valid and require resolution: a. Lack of clarity: There is insufficient explanation of the scope of the acceptance criteria or insufficient description of the intended use of the product or system; or the acceptance criteria is so unclear as to be unacceptable. (The areas where greater clarity is required must be specifically identified.) b. Insufficiency: The criteria is insufficient for proper evaluation of the product or system. (The provisions of the criteria that are in question must be specifically identified.) c. The subject of the acceptance criteria is not within the scope of the applicable codes: A report issued by ICC-ES is intended to provide a basis for approval under the codes. If the subject of the acceptance criteria is not regulated by the codes, there is no basis for issuing a report, or a criteria. (Specifics must be provided concerning the inapplicability of the code.) d. The subject of the acceptance criteria needs to be discussed in public hearings. The committee member requests additional input from other committee members, staff or industry. 5.3 An Evaluation Committee member, in voting on an acceptance criteria, may only cast the following ballots: Approved Approved with Comments Negative: Do Not Proceed 6.0 COMMITTEE COMMUNICATION Direct communication between committee members, and between committee members and an applicant or concerned party, with regard to the processing of a particular acceptance criteria or evaluation report, shall take place only in a public hearing of the Evaluation Committee. Accordingly: 6.1 Committee members receiving an electronic ballot should respond only to the sender (ICC-ES staff). Committee members who wish to discuss a particular matter with other committee members, before reaching a decision, should ballot accordingly and bring the matter to the attention of ICC-ES staff, so the issue can be placed on the agenda of a future committee meeting. 6.2 Committee members who are contacted by an applicant or concerned party on a particular matter that will be brought to the committee will refrain from private communication and will encourage the applicant or concerned party to forward their concerns through the ICC-ES staff in writing, and/or make their concerns known by addressing the committee at a public hearing, so that their concerns can receive the attention of all committee members. Effective April 1, 2011 April 1, 2011 Pg 2 of 2

12 (800) (562) A Subsidiary of the International Code Council PROPOSED REVISIONS TO THE ACCEPTANCE CRITERIA FOR TRANSLUCENT FIBERGLASS REINFORCED PLASTIC (FRP) FACED PANEL WALL, ROOF AND SKYLIGHT SYSTEMS AC177 Proposed December 2011 Approved August 2009 Effective October 1, 2009 Previously approved August 2009, February 2007, October 2005 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. NOTE: The Preface for ICC-ES acceptance criteria was revised in July 2011 to reflect changes in policy. Acceptance criteria are developed for use solely by ICC-ES for purpose of issuing ICC-ES evaluation reports.

13 PROPOSED REVISIONS TO THE ACCEPTANCE CRITERIA FOR TRANSLUCENT FIBERGLASS REINFORCED PLASTIC (FRP) FACED PANEL WALL, ROOF AND SKYLIGHT SYSTEMS (AC177) 1.0 INTRODUCTION 1.1 Purpose: The purpose of this acceptance criteria is to establish the minimum requirements for translucent fiberglass reinforced plastic (FRP) faced panel wall, roof and skylight systems to be recognized in an ICC Evaluation Service, LLC (ICC-ES) evaluation report under the 2012, 2009 and 2006 International Building Code (IBC). The basis of recognition is IBC Section Applicable code sections are IBC Sections 2606, 2607, 2608, 2609, and 2610 and The reason for the development of this criteria is to provide guidelines for the evaluation of properties of FRPfaced panel wall, roof and skylight systems, which are not addressed in the code. 1.2 Scope: Translucent FRP-faced panel systems under this acceptance criteria consist of translucent FRPfaced panels that are either installed into a frame at the factory of the panel manufacturer or that are field-installed into frames or framing members. The translucent FRPfaced panels are a sandwich-type construction composed of single, seamless, flat, fiberglass reinforced plastic (FRP) facing sheets factory-bonded to, and fully covering, both faces of a grid of extruded aluminum members, FRP members or members that are a composite consisting of extruded aluminum flanges and an FRP web. Applications of the translucent FRP-faced panel systems under this acceptance criteria are summarized as follows: (1) Section 3.2: Exterior nonload-bearing wall panels regulated under IBC Section 2607; (2) Section 3.3: Exterior wall glazing regulated under IBC Section 2608; (3) Section 3.4: Roof panels regulated under IBC Section 2609; (4) Section 3.5: Skylights regulated under IBC Section Translucent FRP-faced panels used as safety glazing under IBC Section 2406 are outside the scope of this acceptance criteria. Panels, frames and framing members that are, or consist of, poured and debridged, thermally broken, aluminum extrusions are outside the scope of this acceptance criteria. 1.3 Referenced Documents: and 2006 International Building Code (IBC), International Code Council ICC-ES Acceptance Criteria for Sandwich Panel Adhesives (AC05) ASTM D 635 [-03 (2006 IBC), -06 (2012 IBC and 2009 IBC)], Test Method for Rate of Burning and/or Extent and Time of Burning of Self-Supporting Plastics in a Horizontal Position, ASTM International ASTM D , Standard Test Method for Tensile Properties of Plastics, ASTM International ASTM D , Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials, ASTM International ASTM D (2000) 01, Test Method for Determining Ignition Properties of Plastics, ASTM International ASTM D , Practice for Operating Xenon Arc-Type Light-Exposure Apparatus With and Without Water for Exposure of Plastics, ASTM International ASTM D , Test Method for Predicting Heat Buildup in PVC Building Products, ASTM International ASTM E 72-02, Standard Test Methods of Conducting Strength Tests of Panels for Building Construction, ASTM International ASTM E 84 [-09 (2012 IBC), -07 (2009 IBC), -04 (2006 IBC)] Test Methods for Surface Burning Characteristics of Building Materials, ASTM International ASTM E 108 [-04 (2006 IBC), -07a (2009 IBC and 2012 IBC)], Test Methods for Fire Tests of Roof Coverings, ASTM International ASTM E , Test Method for Determining the Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen, ASTM International ASTM E , Test Method for Structural Performance of Exterior Windows, Curtain Walls and Doors by Uniform Static Air Pressure Difference, ASTM International ASTM E (2009), Test Method for Water Penetration of Exterior Windows, Skylights, Doors and Curtain Walls by Uniform Static Air Pressure Difference, ASTM International ASTM E , Test Method for Water Penetration of Exterior Windows, Skylights, Doors and Curtain Walls by Cyclic Static Air Pressure Difference, ASTM International ASTM E (1997), Test Method for Performance for Wood and Wood-Based Floor and Roof Sheathing Under Concentrated Static and Impact Loads, ASTM International ASTM G 90-05, Standard Practice for Performing Accelerated Outdoor Weathering of Nonmetallic Materials Using Concentrated Natural Sunlight, ASTM International NFPA (-06 for the 2009 IBC) Standard Method of Fire Test for Evaluating Contribution of Wall and Ceiling Interior Finish to Room Fire Growth, National Fire Protection Association UL , (-03 for the 2009 IBC) Standard Test for Surface Burning Characteristics for Building Materials, Underwriters Laboratories Inc UL 790 [-04 (2012 IBC and 2009 IBC), -97 (2006 IBC)] Test for Fire Resistance of Roof Covering Materials, Underwriters Laboratories. 2

14 PROPOSED REVISIONS TO THE ACCEPTANCE CRITERIA FOR TRANSLUCENT FIBERGLASS REINFORCED PLASTIC (FRP) FACED PANEL WALL, ROOF AND SKYLIGHT SYSTEMS (AC177) 1.4 Definitions: Frame: A member at the perimeter of the translucent FRP-faced panel utilized to attach the panel to the structure of the building, in which the frame is continuously supported, along the length of the frame, by the structural elements of the building. Frames under this acceptance criteria are produced from extruded aluminum or FRP. FRP frames under this acceptance criteria are limited to frame configurations where the frame is not subject to flexural stresses under gravity load conditions Framing or Framing Member: A structural member at the translucent FRP-faced panel perimeter used to support the panel, in which the framing member is not continuously supported along the length of the framing member by structural elements of the building. The framing member is either directly supported or is not directly supported by the structural elements of the building. Framing and framing members under this acceptance criteria are limited to those produced from extruded aluminum only Skylight: A skylight under this acceptance criteria consists of a translucent FRP-faced panel either factory- or field-installed into a skylight frame. 2.0 BASIC INFORMATION 2.1 General: Data complying with Sections 3.1 through 3.5, as applicable to the evaluation report applicant s intended end use of the translucent FRP-faced panel systems, shall be submitted. 2.2 Product Description: Complete information concerning materials and the manufacturing process of the translucent FRP-faced panels, frame and framing members shall be provided, and shall include the following: Generic or trade name of the translucent FRPfaced panel system Manufacturer s catalog or model number Materials, including physical properties and dimensions, of the frames, framing members, translucent FRP-faced panels and components of the panels. The components of the translucent FRP-faced panels include the facings, adhesives and grid Dimensioned, scaled drawings of typical installations, noting all thicknesses; connections; installation and mounting details (including type and spacing of fasteners); caulking; and other information associated with installation, such as flashing and roof slope limitations. Aluminum components must be separated from dissimilar materials in accordance with Section 6.6.1of Part 1-A of the Aluminum Design Manual. Fasteners in contact with aluminum components shall be aluminum, stainless steel or aluminized, hot-dip galvanized or electrogalvanized steel. 2.3 Product Identification and Labeling: The method of packaging and identifying the translucent FRPfaced panels, frames and framing members shall be specified. A permanent label located on each translucent FRP-faced panel shall bear the manufacturer s name and address, model number (if applicable), the plastic classification of each facing (CC1 or CC2), the thickness of each facing, the ICC-ES evaluation report number and 3 the name or logo of the inspection agency. The exterior face of the translucent FRP-faced panels shall be clearly identified. Containers of framing members shall be identified by labels that bear the company name of the evaluation report holder, the part number and the evaluation report number. 2.4 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. 2.5 Test Reports: Test reports shall comply with AC Product Sampling: Sampling of the translucent FRP-faced panels for tests under this criteria shall comply with Section 3.1 of AC85. Sampling of the frames and framing members for tests under this criteria shall comply with Section 3.2 of AC85. Test specimens shall be representative of standard manufacture in conformance with the minimum requirements of the quality control manual required under Section 5.0 of this acceptance criteria. 2.7 Supplementary Information: Supplementary information may be included in the evaluation report, provided it relates to the IBC and is properly justified. Examples include sound transmission as specified in IBC Section 1207, and thermal transmission data as addressed in IBC Chapter 13. Recognition of fire-resistive assemblies requires reports of tests in compliance with IBC Chapter TEST AND PERFORMANCE REQUIREMENTS 3.1 General: Allowable load values developed under this criteria based on testing are not subject to increase due to duration of loading Substantial in-service differences in temperature between the exterior face and interior face of translucent FRP-faced panels with high coefficients of thermal expansion require justification that this will not be detrimental to the panel integrity When grid members are of a composite construction of aluminum and FRP, the FRP material shall comply with the requirements for exterior panel facings in Section 4.1 (except Sections and 4.1.2) of this criteria. Some of the requirements may be satisfied by utilizing an FRP plastic recognized in current ICC-ES evaluation report. 3.2 Exterior Nonload-bearing Wall Panels: For recognition as an exterior, nonload-bearing wall panel under IBC Section 2607 for light-transmitting plastic wall panels, the following items shall be addressed: Panel facing material data in accordance with Section 4.1 of this criteria. Some of the requirements may be satisfied by utilizing an FRP plastic recognized in a current ICC-ES evaluation report Data in accordance with Section 4.2 of this criteria for all adhesives used in the panel and panel grid. As a minimum, the adhesive shall qualify as a Type I, Class 2, adhesive, since the panels will be limited to use as nonload-bearing wall panels.

15 PROPOSED REVISIONS TO THE ACCEPTANCE CRITERIA FOR TRANSLUCENT FIBERGLASS REINFORCED PLASTIC (FRP) FACED PANEL WALL, ROOF AND SKYLIGHT SYSTEMS (AC177) Uniform transverse (out-of-plane) positive and negative allowable loads shall be based on one of the following (Section or ): Uniform load testing of the panels and framing members in accordance with Section 4.3 of this criteria Calculated spans based on the extruded aluminum grid members of the panel shall be determined in accordance with IBC Chapter 20. The deflection limitations specified for exterior walls with flexible finishes (span/120) in IBC Table shall be applied. See Note 1. If the panels span between framing members, the allowable transverse load of the framing members shall also be based on calculations in accordance with IBC Chapter 20, and the combined deflection of the panel and framing members at the allowable load shall not exceed the deflection limitation. The use of this criteria section to calculate the spans of the framing members is limited to installations where the framing members are directly supported by structural elements of the building. Additionally, the allowable uniform transverse loads of the panel facings shall be established in accordance with Section 4.7. Allowable uniform transverse load recognition will be limited to the lesser of the allowable load calculated for the grid and framing members, and the allowable load based on Section 4.7 for the panel facing material. NOTE 1 For recognition of use in walls of sunroom additions or patio covers, the total load deflection limitation shall be span/60 (see footnote h of IBC Table ) Freeze-thaw test data in accordance with Section of this criteria Temperature cycling test data in accordance with Section 4.9 of this criteria is needed for panels installed into aluminum frames and framing Water penetration tests in accordance with Section Air infiltration tests in accordance with Section Tests for the flame spread index and smokedevelopment rating of the interior and exterior facing material in accordance with Section Exterior Wall Glazing: For recognition as an exterior wall glazing under IBC Section 2608 for lighttransmitting plastic glazing, the following items shall be addressed: Panel facing material data in accordance with Section 4.1 of this criteria. Some of the requirements may be satisfied by utilizing an FRP plastic recognized in a current ICC-ES evaluation report Data in accordance with Section 4.2 of this criteria for all adhesives used in the panel and panel grid. As a minimum, the adhesive shall qualify as a Type I, Class 2, adhesive, since the panels will be limited to use as exterior wall glazing Uniform transverse (out-of-plane) positive and negative allowable loads shall be based on one of the following (Section or ): Uniform load testing of the panels in accordance with Section 4.4 of this criteria Calculated spans based on the extruded aluminum grid members of the panel in accordance with IBC Chapter 20. The deflection limitation of IBC Table for exterior walls with flexible finishes (span/120) shall be applied. See Note 2. Additionally, the allowable uniform transverse loads of the panel facings shall be established in accordance with Section 4.7. Allowable uniform transverse load recognition will be limited to the lesser of the allowable load calculated for the grid, and the allowable load based on Section 4.7 for the panel facing material. NOTE 2 For recognition of use in walls of sunroom additions or patio covers, the total load deflection limitation shall be span/60 (see footnote h of IBC Table ) Freeze-thaw test data in accordance with Section of this criteria Temperature cycling test data in accordance with Section 4.9 of this criteria is needed for panels installed into aluminum frames and framing Water penetration tests in accordance with Section Air infiltration tests in accordance with Section Roof Panels: For recognition as a roof panel under IBC Section 2609 for light-transmitting plastic roof panels, the following items shall be addressed: Panel facing material data in accordance with Section 4.1 of this criteria. Some of the requirements may be satisfied by utilizing an FRP plastic recognized in a current ICC-ES evaluation report Data in accordance with Section 4.2 of this criteria for all adhesives used in the panel and panel grid. The adhesives shall qualify as Type II, Class 2, adhesives, except the classification may be reduced to Type I, Class 2, for panels for which the strength and stiffness are based on Section For use in installations under IBC Section 2609 based on the roof panels complying with IBC Chapter 15 requirements for roof coverings, the following requirements apply: Roof classification testing in accordance with Section 4.13 of this criteria IBC Section Uniform transverse (out-of-plane) positive and negative allowable loads shall be based on one of the following (Section or ): Uniform load testing of the panels and framing members in accordance with Section 4.5 of this criteria Calculated spans based on the extruded aluminum grid members shall be determined in accordance with IBC Chapter 20. The total load deflection limitations specified in footnote h of IBC Table shall be applicable (span/60). If the panels span between framing members, the allowable transverse load of the framing members shall also be based on calculations in accordance with IBC Chapter 20, and the combined deflection of the panel and framing members at the allowable load shall not exceed the deflection limit. The 4

16 PROPOSED REVISIONS TO THE ACCEPTANCE CRITERIA FOR TRANSLUCENT FIBERGLASS REINFORCED PLASTIC (FRP) FACED PANEL WALL, ROOF AND SKYLIGHT SYSTEMS (AC177) use of this criteria section to calculate the spans of the framing members is limited to installations where the framing members are directly supported by structural elements of the building. Additionally, the allowable uniform transverse loads of the panel facings must be established in accordance with Section 4.7 of this criteria. Allowable uniform transverse load recognition will be limited to the lesser of the allowable load calculated for the grid and framing members, and the allowable load based on Section 4.7 for the panel facing material Concentrated static load testing in accordance with Section 4.8 of this criteria Freeze-thaw test data in accordance with Section of this criteria Temperature cycling test data in accordance with Section 4.9 of this criteria is needed for panels installed into aluminum frames and framing ,4,8 Water penetration tests in accordance with Section Air infiltration tests in accordance with Section Tests for flame spread index and the smokedevelopment rating for the interior facing material in accordance with Section Skylights: For recognition as a skylight under IBC Section 2610 for light-transmitting plastic skylight glazing, the following items shall be addressed: Panel facing material data in accordance with Section 4.1 of this criteria. Some of the requirements may be satisfied by utilizing an FRP plastic recognized in a current ICC-ES evaluation report Data in accordance with Section 4.2 of this criteria for all adhesives used in the panel and panel grid. The adhesives shall qualify as Type II, Class 2, adhesives, except the classification may be reduced to Type I, Class 2, for panels for which the strength and stiffness are based on Section Uniform transverse (out-of-plane) positive and negative allowable loads shall be based on one of the following (Section or ): Uniform load testing of the skylight in accordance with Section 4.6 of this criteria Calculated spans based on the extruded aluminum grid members in accordance with IBC Chapter 20. The total load deflection limitation specified in footnote h of IBC Table shall be applicable (span/60). Additionally, the allowable uniform transverse loads of the panel facings shall be established in accordance with Section 4.7. Allowable uniform transverse load recognition will be limited to the lesser of the allowable load calculated for the grid, and the allowable load based on Section 4.7 for the panel facing material The allowable wind uplift load from Section shall not result in loads, on the fasteners attaching the skylight frame to the roof structure, exceeding the connection capacity. The connection capacity shall be based on code-recognized allowable values for the fasteners. In the absence of code-recognized fastener allowable loads, small-scale fastener connection tests are necessary. Prior to the fastener connection test being 5 conducted, a suggested test program (including proposed conditions of acceptance and safety factor) should be submitted to ICC-ES for review Concentrated static load testing in accordance with Section 4.8 of this criteria Freeze-thaw test data in accordance with Section of this criteria Temperature cycling test data in accordance with Section 4.9 of this criteria is needed for skylights with aluminum frames Class B burning-brand testing, in accordance with Section 4.14 of this criteria, is required for skylights mounted at slopes of less than 4:12 (33 percent slope) Use of the skylight shall be limited to installations where nonclassified roof coverings are permitted, unless the edge of the plastic glazing material of the skylight is protected by metal or other noncombustible material Skylights with FRP frames shall be limited to use on structures permitted to be of Type 3, 4 or 5 construction as required by IBC Section Skylights with FRP frames shall be further limited to installations permitting nonclassified roof coverings, unless reports of tests in accordance with Section 4.15 of this acceptance criteria are submitted Temperature cycling test data in accordance with Section of this criteria is needed for skylights with FRP frames Water penetration tests in accordance with Section Air infiltration tests in accordance with Section For skylights with FRP frames, weathering and strength tests of the FRP frame material in accordance with Section TEST PROCEDURES 4.1 Translucent FRP-faced Panel Facing Material: Plastics Specifications Testing: Reports of tests of the FRP of the panels in accordance with the test procedures specified in IBC Section shall be submitted. The performance of the specimens shall comply with the specifications for light-transmitting plastics noted in IBC Section Weatherometer Testing: Specimens: Representative test specimens shall be prepared from the interior and exterior FRP facings of the panels and shall be of sufficient size to allow for conducting tensile and elongation tests (Section 4.1.4) and flexural tests (Section 4.1.5) of the FRP in both the machine and cross-machine directions, of both control and weather exposed specimens. In addition, the test specimens size shall be sufficient to allow for conducting ignition properties and rate of burn tests (Section ), when required by this criteria. Exception: When the allowable loads or spans of the panels are not based on the interior facer or the facer s attachment to the grid members of the panel,