1、 Plastic Toilet Seats IAPMO/ANSI Z124.5-2013e1American National Standard Approval of an American National Standard requires verification by American National Standards Institute (ANSI) that the requirements for due process, consensus, and other criteria for approval have been met by the standards de
2、veloper. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that al
3、l views and objections be considered, and that a concerted effort be made toward their resolution. The use of American National Standards is completely voluntary; their existence does not in any respect preclude anyone, whether he has approved the standards or not, from manufacturing, marketing, pur
4、chasing, or using products, processes, or procedures not conforming to the standards. The American National Standards Institute does not develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to i
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8、at: www.IAPMOstandards.org Copyright 19832013 by International Association of Plumbing and Mechanical Officials (IAPMO) All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without prior written permission of the publisher. P
9、rinted in the United States of America IAPMO/ANSI Z124.52013e1Plastic Toilet Seats December 2013 i Contents Preface IAPMO Plumbing Standards Committee IAPMO Z124 Technical Subcommittee 1 Scope 2 Reference Publications 3 Definitions and Abbreviations 3.1 Definitions 3.2 Abbreviations 4 General Requir
10、ements 4.1 Materials 4.2 Finished Surfaces 4.3 Dimensions 4.4 Hinges 4.5 Bumper Height 5 Workmanship and Finish Tests and Performance Criteria 5.1 Test Specimens and Test Conditions 5.2 Surface Examination Test 5.3 Warpage Tolerance Test 5.4 List (Layback) Test 5.5 Parting Line and Edge Finish Test
11、6 Structural Integrity Tests and Performance Criteria 6.1 Static Load Test 6.2 Dynamic (Rocker) Test 6.3 Bolt Torque Test 6.4 Nut Torque Test 6.5 Bumper Test 6.6 Point Impact Load Test 7 Material Tests and Performance Criteria 7.1 Test Specimens 7.2 Burn Resistance Test 7.3 Chemical Resistance Test
12、7.4 Corrosion Resistance Test for Metallic Parts 8 Markings and Additional Literature 8.1 Markings 8.2 Characteristics 8.3 Packaging IAPMO/ANSI Z124.52013e1Plastic Toilet Seats December 2013 ii Preface This is the fourth edition of IAPMO Z124.5, Plastic Toilet Seats. It supersedes the previous editi
13、ons, published in 2006, 1997, and 1989 under the title Plastic Toilet (Water Closet) Seats. This Standard was developed by the IAPMO Z124 Technical Subcommittee and approved by the IAPMO Plumbing Standards Committee in accordance with the American National Standards Institute (ANSI) Essential Requir
14、ements: Due process requirements for American National Standards and the IAPMO Policies and Procedures for Consensus Development of American National Standards. This Standard was approved as an American National Standard on March 15, 2013. Notes: (1) The use of the singular does not exclude the plur
15、al (and vice versa) when the sense allows. (2) This standard was developed in accordance with the IAPMO procedures accredited as meeting the criteria for American National Standards and it is an American National Standard. The IAPMO Standards Committee that approved this Standard was balanced to ass
16、ure that individuals from competent and concerned interests had an opportunity to participate. During its development, this Standard was made available for public review, thus providing an opportunity for additional input from industry, academia, regulatory agencies, and the public at large. (3) Thi
17、s Standard was developed by consensus, which is defined as substantial agreement; consensus implies much more than a simple majority, but not necessarily unanimity. It is consistent with this definition that a member of the relevant IAPMO Standards Committee can be included in the committee roster a
18、nd yet not be in full agreement with all sections of this Standard. (4) Although the intended primary application of this Standard is stated in its scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose. (5
19、) IAPMO Standards are subject to periodic review and suggestions for their improvement will be referred to the relevant IAPMO Standards Committee. To submit a proposal for change to this Standard, you may send the following information to the International Association of Plumbing and Mechanical Offi
20、cials, Attention Standards Department, at standardsIAPMOstandards.org or, alternatively, at 5001 East Philadelphia Street, Ontario, California, 91761, and include “Proposal for change” in the subject line: (a) standard designation (number); (b) relevant section, table, or figure number, as applicabl
21、e; (c) wording of the proposed change, tracking the changes between the original and the proposed wording; and (d) rationale for the change. (6) Requests for interpretation should be clear and unambiguous. To submit a request for interpretation of this Standard, you may send the following informatio
22、n to the International Association of Plumbing and Mechanical Officials, Attention Standards Department, at standardsIAPMOstandards.org or, alternatively, at 5001 East Philadelphia Street, Ontario, California, 91761, and include “Request for interpretation” in the subject line: (a) the edition of th
23、e standard for which the interpretation is being requested; (b) the definition of the problem, making reference to the specific section and, when appropriate, an illustrative sketch explaining the question; (c) an explanation of circumstances surrounding the actual field conditions; and (d) the requ
24、est for interpretation phrased in such a way that a “yes” or “no” answer will address the issue. (7) Interpretations are processed in accordance with IAPMOs accredited standards development procedures. IAPMO issues written replies to inquiries concerning interpretation of technical aspects of this S
25、tandard. (8) IAPMO accepts responsibility only for those interpretations of this Standard issued in accordance with the accredited IAPMO policies and procedures, which precludes the issuance of interpretations by individuals. (9) IAPMO does not “approve,” “rate,” or “endorse” any item, construction,
26、 proprietary device, or activity. IAPMO/ANSI Z124.52013e1Plastic Toilet Seats December 2013 iii (10) Attention is drawn to the possibility that some of the elements of this Standard may be the subject of patent rights. IAPMO is not to be held responsible for identifying any or all such patent rights
27、. Users of this Standard are expressly advised that determination of the validity of any such patent rights is entirely their responsibility. (11) IAPMO does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this Standard, and
28、does not undertake to insure anyone utilizing this Standard against liability for infringement of any applicable patents, nor assumes any such liability. Users of this Standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such ri
29、ghts, are entirely their responsibility. (12) Participation by federal or state agency representative(s) or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this Standard. IAPMO/ANSI Z124.52013e1Plastic Toilet Seats December 2013 iv IAPMO Plumbing
30、Standards Committee S. Rawalpindiwala Kohler Co. Chair Kohler, Wisconsin, USA S.S. Parkhurst QAI Laboratories ViceChair Tulsa, Oklahoma, USA C. Arnold National Association of Home Builders Research Center Washington, D.C., USA J.A. Ballanco JB Engineering and Code Consulting, P.C. Munster, Indiana,
31、USA R.S. Balmer Underwriters Laboratories Northbrook, Illinois, USA B.G. Brody North American Composites Mays Landing, New Jersey, USA S.L. Cavanaugh Cavanaugh Consulting Santa Fe, New Mexico, USA L. Cox Structurlite Composites Consultants Hebron, Ohio, USA S.M. Galayda Product Listing Services, Inc
32、. Litchfield, Ohio, USA J. Galvin Plumbing Manufacturers International Rolling Meadows, Illinois, USA C.R. Graham Martech Enterprises Thousand Oaks, California, USA A. Granzow NIBCO, INC. Elkhart, Indiana, USA D.E. Holloway IAPMO R (b) “should” is used to express a recommendation but not a requireme
33、nt; (c) “may” is used to express an option or something permissible within the scope of the standard; and (d) “can” is used to express either a possibility or a capability. Notes accompanying sections of the Standard do not specify requirements or alternative requirements; their purpose is to separa
34、te explanatory or informative material from the text. Notes to tables and figures are considered part of the table or figure and can be written as requirements. 1.4 SI units are the primary units of record in global commerce. In this Standard, the inch/pound units are shown in parentheses. The value
35、s stated in each measurement system are equivalent in application but each unit system is to be used independently. Combining values from the two measurement systems can result in nonconformance with this Standard. 2 Reference Publications This Standard refers to the following publications, and wher
36、e such reference is made, it shall be to the current edition of those publications, including all amendments published thereto. ASTM International (American Society for Testing and Materials) ASTM B117 Standard Practice for Operating Salt Spray (fog) Apparatus CSA/IAPMO (Canadian Standards Associati
37、on/International Association of Plumbing and Mechanical Officials) CSA B45.5/IAPMO Z124 Plastic plumbing fixtures IAPMO/ANSI Z124.52013e1Plastic Toilet Seats December 2013 2 3 Definitions and Abbreviations 3.1 Definitions In addition to the definitions in CSA B45.5/IAPMO Z124, the following definiti
38、ons shall apply in this Standard: Bumper an extension of the seat or cover that acts as a spacer and a cushion. Note: Bumpers can be of separate construction or integrally molded. Defect Blister (Void) an unsupported surface that fractures upon the application of a manual pressure of 44.5 N (10 lbf)
39、 with a 13 mm (0.5 in) diameter nylon rod. Surface porosity voids in the surface not extending through to the substrate. Edge the lowermost surface of the toilet seat or cover side, front or rear profile. List (Layback) the position of the toilet seat at the point of rotation stoppage beyond the ver
40、tical balance position. Note: Sufficient layback ensures that the seat (or seat and cover) will remain in the open position when raised. Parting line a line on the toilet seat resulting from the molding process. Note: Parting lines are a visual indication of the separation of the top and bottom halv
41、es of the manufacturing equipment. Softclosing toilet seat a toilet seat designed to close gradually. Note: Softclosing toilet seats can be with or without covers. Toiletbowl rim profile Elongated a toiletbowl rim that measures 470 mm (18.5 in) from the mounting holes to the front edge. Round a toil
42、etbowl rim that measures 419 mm (16.5 in) from the mounting holes to the front edge. Toilet seat the component on which a person sits while using the toilet. Note: Toilet seats can be round or elongated, with or without cover, and have an open or closed front. 3.2 Abbreviations The following abbrevi
43、ations apply in this Standard: CK check hinge SC selfsustaining and check hinge SR selfraising hinge SS selfsustaining hinge IAPMO/ANSI Z124.52013e1Plastic Toilet Seats December 2013 3 4 General Requirements 4.1 Materials 4.1.1 Composition Plastic toilet seats shall be made of materials that comply
44、with the requirements of this Standard. 4.1.2 Reground and Reprocessed Materials Reground and reprocessed materials may be used, provided the finished toilet seats meet the requirements of this Standard. 4.2 Finished Surfaces Finished surfaces shall comply with the applicable requirements of this St
45、andard. 4.3 Dimensions Except for proprietary (i.e., nonstandard) toilet seats provided by the toilet manufacturer, the minimum dimensions for plastic toilet seats shall be as specified in Figure 1. Note: The toilet seat length is the distance from the mounting bolt centers to the front edge of the
46、seat. 4.4 Hinges 4.4.1 Check (CK) Hinges Check hinges shall have a means to stop the rotation of the toilet seat at a predetermined angle beyond the vertical. 4.4.2 SelfSustaining (SS) Hinges Selfsustaining hinges shall provide resistance to the rotation of the toilet seat so that the seat can remai
47、n in the desired position of rotation. 4.4.3 SelfSustaining Check (SC) Hinges Selfsustaining check hinges shall have the characteristics of the check and the selfsustaining hinges. 4.4.4 SelfRaising (SR) Hinges Selfraising hinges shall automatically raise the toilet seat to an upright position when
48、not in use. 4.4.5 Adjustable Hinges Adjustable hinges shall allow adjustments for installation on toilets with nonstandard seat mounting hole locations. 4.5 Bumper Height The bumper height shall be at least 1.6 mm (0.06 in). IAPMO/ANSI Z124.52013e1Plastic Toilet Seats December 2013 4 5 Workmanship a
49、nd Finish Tests and Performance Criteria 5.1 Test Specimens and Test Conditions 5.1.1 Test Specimens Test specimens shall be installed simulating typical fieldinstallation conditions and the tests shall be conducted on surfaces that are visible after installation. 5.1.2 Test Conditions The tests shall be conducted at an ambient temperature of 22 3 C (72 5F) and at 50% relative humidity. 5.2 Surface Examination Test 5.2.1 Test Procedure The surface examination test shall be conducted as specified in Clause 5.
