AWPA Book of Standards AWPA PROTECTING WOOD SINCE 1904

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AWPA Book of Standards AWPA PROTECTING WOOD SINCE 1904 2015 AWPA Book of Standards AWPA PROTECTING WOOD SINCE 1904 AMERICAN WOOD PROTECTION ASSOCIATION Cover Photo: Railroad ties being air-seasoned prior to preservative treatment. Since the mid-1800s, wood railroad crossties have been treated with a variety of wood preservatives to extend tie service life from only a few years to more than 33 years on average. Today, there are over 800 million treated wood railroad ties in service across North America, and 22 million or more ties are produced for new track construction and maintenance-of-way each year. Photo credit: Railway Tie Association (www.rta.org). IMPORTANT NOTICE The information provided in this document is directed solely to professionals who have the appropriate degree of experience to understand and interpret its contents in accordance with generally accepted procedures or other professional standards and applicable regulations. No recommendation as to specific products or vendors is made or implied. Improper application of some of the products and chemicals mentioned in AWPA Standards could be hazardous to health or safety. For directions regarding proper application and safe handling of treated wood products, the user should comply with provisions of the CONSUMER INFORMATION SHEET, CONSUMER SAFETY INFORMATION SHEET, and/or MATERIAL SAFETY DATA SHEET which pertains to the treated wood product under consideration. These documents should be available through the source from which you received your treated wood product. Those who are involved in the production and testing of treated wood products should comply with directions found upon pesticide labels and/or Material Safety Data Sheets which pertain to the pesticide or chemical under consideration. Copies of these documents should be on file at each location at which wood is treated or tested and should be available for inspection by employees or other interested parties. Wood processing and treated wood are regulated by a number of organizations in addition to AWPA (e.g., U.S. EPA, or other Federal, State, or Local Government Agencies). The existence of the AWPA Standards for treated products does not imply that all other regulatory bodies recognize or permit the use of the particular combination of preservatives, processes, and/or wood species listed in the AWPA Standards. These standards may be revised, reaffirmed, or withdrawn at any time, pursuant to AWPA’s Technical Committee Regulations. In addition, the user’s attention is called to the possibility that compliance with these standards may require the use of an invention covered by patent rights. By publication of these standards, no position is taken with respect to whether the use of an invention covered by patent rights will be required, and if any such use is required, no position is taken regarding the validity of this claim or any patent rights in connection therewith. In the judgment of the membership of the American Wood Protection Association, AWPA Standards represent the preferred wood preservation specifications, processes, penetration and retention in the present state of research and technical knowledge. AWPA Standards are voluntary and AWPA has no control over the processes used to employ these standards or because of possible variations in materials, application, and manner of use. Therefore, AWPA cannot be responsible for results of use or performance of products represented as meeting or conforming to these Standards. No representation or warranty is made that the information is technically accurate or sufficient or conforms to any statute, governmental rule or regulation, and further, no representation or warranty is made of merchantability or fitness for any particular purpose or against infringement of intellectual property rights. AWPA shall not be liable, beyond the amount of any sum received in payment by AWPA for this document with respect to any claim, and in no event shall AWPA be liable for lost profits or other incidental or consequential damages. AWPA expressly advises that any and all use of or reliance upon the information provided in this document is at the risk of the user. ISSN 1534-195X Copyright © 2015 by American Wood Protection Association – All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written consent of the publisher. For more information, contact AWPA by mail at P.O. Box 361784, Birmingham, Alabama 35236 USA, by telephone at +1-205-733-4077, by email at [email protected], or online at www.awpa.com. Updates and errata for current edition AWPA Standards are posted at: www.awpa.com/standards/updates.asp (This page intentionally left blank.) AMERICAN WOOD PROTECTION ASSOCIATION Contents © 2015 All Rights Reserved TABLE OF CONTENTS: 2015 AWPA BOOK OF STANDARDS Introduction – Page 1 P4-11: Standard for Petroleum Oil for Blending with Creosote ............................................................................. 116 Introduction ........................................................................... 1 P5-15: Standard for Waterborne Preservatives .................. 117 Use Category System Standards – Page 5 P8-14: Standard for Oil-Borne Preservatives ..................... 123 P18-14: Nonpressure Preservatives .................................... 125 U1-15: User Specification for Treated Wood 1. Introduction to the Use Category System .......................... 5 P20-15: All Barrier Protection Systems ............................. 127 2. Service Conditions for Use Category Designations .......... 6 3. Guide to Treated Wood End Uses ..................................... 8 P22-14: Standard for Ammoniacal Copper Zinc 4. Standardized Preservatives .............................................. 12 Arsenate (ACZA) ............................................................... 129 5. Species and Species Groupings ....................................... 14 P23-14: Standard for Chromated Copper Arsenate 6. Commodity Specifications .............................................. 19 Type C (CCA-C) ................................................................ 130 A. Sawn Products ....................................................... 20 B. Posts ....................................................................... 37 P24-13: Standard for Alkyl Ammonium Compound, C. Crossties and Switchties ........................................ 43 Waterborne (AAC-W) ....................................................... 132 D. Poles ...................................................................... 45 P25-14: Standard for Inorganic Boron (SBX) .................... 133 E. Round Timber Piling .............................................. 51 F. Wood Composites .................................................. 53 P26-14: Standard for Alkaline Copper Quat Type A G. Marine Applications .............................................. 60 (ACQ-A) ............................................................................ 134 H. Fire Retardant Treated Products ............................ 67 P27-14: Standard for Alkaline Copper Quat Type B I. Nonpressure Applications ....................................... 69 (ACQ-B) ............................................................................ 135 J. Nonpressure Composites ........................................ 70 P28-14: Standard for Alkaline Copper Quat Type C T1-15: Processing and Treatment Standard (ACQ-C) ............................................................................ 136 Introduction ......................................................................... 73 P29-14: Standard for Alkaline Copper Quat Type D 1. General Requirements ..................................................... 74 (ACQ-D) ............................................................................ 137 2. Treatment ........................................................................ 75 3. Results of Treatment ....................................................... 76 P32-15: Standard for Copper Azole Type B (CA-B) ......... 138 4. Preservatives ................................................................... 79 P33-13: Standard for Copper HDO Type A (CX-A) .......... 139 5. Quality Control and Inspection ....................................... 79 6. Retreatment ..................................................................... 79 P34-14: Standard for Copper Naphthenate, 7. Drying After Treatment ................................................... 79 Waterborne (CuN-W) ........................................................ 140 8. Special Requirements by Commodity ............................. 80 P35-10: Standard for Pentachlorophenol (PCP) ................. 141 A. Sawn Products ....................................................... 80 B. Posts ....................................................................... 85 P36-11: Standard for Copper Naphthenate (CuN) ............. 142 C. Crossties and Switchties ........................................ 88 P37-11: Standard for Oxine Copper (Copper 8 D. Poles ...................................................................... 90 Quinolinolate) (Cu8) .......................................................... 143 E. Round Timber Piles ............................................... 97 F. Pressure Treated Composites ................................. 99 P38-13: Standard for Alkyl Ammonium Compound, G. Marine Applications ............................................ 103 Oilborne (AAC) ................................................................
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