M 133 95

Standard Specification jor Preservatives and Pressure Treatment Processes for Timber AASHTO i, SCOPE 1.1 This specification covers the wood preservatives, the preservative treatment processes, the results of treatment, the inspection and testing of preservatives and of treatment and the identification of properly treated timber DESIGNATION: GENERAL REQUIREMENTS 2.1 Standards of the American Wood- Preservers’ Association and specified commercial standards are incorporated herein by reference Attenuon is called to the fact that all preservatives are not equally effective on all species of wood or under all conditions of exposure The engineer preparing the plans and specifications should seiect the type of preserva- 4.1.12 Arsenate-Type B 4.1.14 Chromated Arsenate-Type C 5, The properties of the timber se- lected for preservative treatment shall conform to the requirements of AASHTO M_ 168, Structural Lumber, and Piling 4, PRESERVATIVE 4.1 The following Timber, preserva- tives are acceptable in this specification The properties shall be those set forth in the referenced AWPA Standards 4.1.1 Creosote AWPA P |} 4.1.2 Creosote for use in Coastal Waters AWPA P 13 4.1.3 Creosote-Coal Tar Solution AWPA P 4.1.4 Creosote-Coal Tar 124 Copper 4.1.15 B Ammoniacal AWPA Copper AWPA Copper AWPA P P P Quat- P PRESERVATIVE TREATMENT PROCESSES AND RESULTS 8.1 Wood products shall be treated _ in accordance with AWPA C14, Wood for Highway Construction, or the following specifications, except that the case QUALITY named Chromated Arsenate-Type A AWPA 4.1.13 Chromated Copper 5.1.6 Sawed Posts shall as set forth in AWPA CS §.1.7 of conflict, C14 shall govern 5.1.1 General requirements for tim- be treated Care and handling of Pressure Treated Wood Products shall be in accordance P Acid Copper Chromate AWPA P 4.1.10 Ammoniacal Copper Arsenate AWPA P 4.1.11 Ammoniacal Copper Zinc Arsenate -_ _ _AWPAPS 3.1 AWPA 4.1.9 Type QUALITY P 12 Solution AWPA P 4.1.6 Petroleum for Blending with Creosote AWPA P 4.1.7 Pentachlorophenol AWPA P 4.1.8 Solvents used in Penta- tives retentions and species best suited for his purpose and conditions TIMBER 133-95 Solution for use in Coastal Waters WPA 4.1.5 Creosote-Petroleum chlorophenol Solutions M with AWPA INSPECTION MARKING 6.1 spection M4 AND The treater shall perform the inand tests and conform requirements described in AWPA to the M2 He shall apply to each piece of treated timber a legible brand, mark or tag indi- cating the name of the treater and the specification symbol or specification requirements to which the treatment con- forms Acceptable symbols of compli- ance shall be similar to brands listed in AWPA M6, or as provided for in the plans or special provisions 6.2 The engineer shall be provided adequate facilities and necessary parts of the inspection of material treating processes, to free access to treating plant workmanship, determine that the for and the contract requirements are met The engi- neer reserves the right to retest all materials after delivery to the job site and to reject all materials which not meet the requirements of the contract Rein- spection at the job site may include assay to determine retention of preservatives and extraction and analysis of preservative to determine its quality ber treatment shall be those set forth in AWFPA Cl 7, shall be treated as set forth in AWPA C2 5.1.3 Structural Composite Lumber shall be treated as set forth in AWPA C33 7.1 The sampling and testing of wood preservatives shall be in accordance with the following standard meth- treated as set forth in AWPA C3 5.1.5 Round Poles shall be treated as set forth in AWPA C4 American Society for Testing Materials, 5.1.2 §.1.4 Lumber and Sawed Timber Round Timber Piling shall be METHODS OF SAMPLING AND TESTING ods of American Association of State Highway and Transportation Officials American Wood-Preservers’ Association 135 SPECIFICATIONS FOR MATERIALS M 133 Manual of Recommended their latest revisions Practice AASHTO T 60 APWA in 711.1 Sampling wood preservatives 7.1.2 Specific gravity of creosote A A 1-4 AASHTO T 32 APWA AASHTO T 74 APWA A 1-5 C of Specific gravity 38/15.5 7.1.3 creosote solution 7.1.4 Water in creosote 97.1.5 Insoluble matter in creosote AASHTO T 83 APWA AASHTO T 81 APWA A 1-6 A 1-3 7.1.6 AASHTO 7.1.7 Products 7.18 AASHTO 7.1.9 sote-coal 7.1.10 Distillation of creosote T 62 APWA A 1-2 Distillation of Petroleum — AASHTO T 115 Coke residue of creosote 61 APWA A 1-1 Tur acids in creosote and creotar solutions ASTM D 453 Specific gravity of petroleum ASTM D 287 7.1.11 Water and sediment in petroleum products by means of centrifuge ASTM D 96 7.1.12 Flash point of petroleum 7.1.13 Viscosity, Saybolt AASHTO T 72 Analysis of water-borne (Pensky-Martens) 7.1.14 AASHTO preservatives APWA 7.1185 Analysis of oil-borne preservatives APWA T 73 A A