Tar may be used in: P-201, P-204, P-216, P-405, and P-602. 90-15 EMULSIFIED ASPHALT. The requirements for emulsified asphalt will be included under the construction specifications. Emulsified Asphalt may be used in: Items P-204, P-214, P-215, P-216, P-405, P-603, P-604, and 90-16 LIQUEFIER. The liquefier shall meet the requirements of A. A. S. H. O. Specification M-83. The grade shall be the light grade unless otherwise indicated in the proposal. Liquefier will be used in: Items P-410 and P-411. 90-17 HYDRATED LIME. The hydrated lime shall meet the requirements of A. S. T. M. Designation C-6. Hydrated Lime may be used in: Items P-201, P-204, P-215, P-216, P-401, and P-410. MIX 90-18 MINERAL FILLER FOR BITUMINOUS TURES. The mineral filler for bituminous mixtures shall meet the requirements of A. A. S. H. O. Specification M-17. Stone dust shall be required and used with sand bituminous base and surface courses. Mineral Filler may be used in: Items P-201, P-204, P-215, and P-401. 90-19 CRUSHED STONE. The requirements for crushed stone will be included in the construction specifications. Crushed Stone may be used in: Items P-201, P-204, P-205, P-206, P-208, P-209, P-214, P-215, P-216, P-217, P-302, P-401, P-405, P-410, P-501, P-604, P-609, and P-610. 90-20 CRUSHED SLAG. The requirements for crushed slag will be included in the construction specifications. Crushed Slag may be used in: Items P-201, P-204, P-205, P-206, P-208, P-209, P-214, P-216, 90-21 GRAVEL. The requirements for gravel will be included in the construction specifications. Gravel may be used in: Items P-201, P-204, P-208, P-209, P-213, P-215, P-216, P-217, 90-22 SIZE AND GRADATION REQUIREMENTS FOR COARSE AGGREGATE. The size and gradation requirements for coarse aggregate for designated uses shall meet those shown in the table. 90-23 FENCES. The material requirements for fences will be given in detail in the construction specifications. The most impor tant materials are listed as follows: (a) Classes A, B, C, and D, wire fence. (1) The woven wire fencing shall conform to Federal Specification RR-F-221, Type B. All wires shall be two dip, of the size and spacing as shown on the plans. (2) The barbed wire shall conform to Federal Specification RR-F-221, Type A. All wires shall be two dip, of the size and spacing as shown on the plans. (3) The wooden posts shall be of the species, quality, dimensions, and treatments as required in Item P-160. (4) The steel posts shall consist of rail steel meeting A. S. T. M. Designation A-16 or hard grade billet steel meeting A. S. T. M. Designation A-15. The posts shall be of the section, the length, and be galvanized as required on the plans. Wire fence will be used in: Item P-160 or P-161. (b) Class E, chain link fence. (1) The chain link fabric shall meet the requirements of A. S. T. M. Designation A-117. The fabric shall be of the size, dimension, and galvanized as shown on the plans or required in the construction specifications. (2) The steel posts shall conform to A. S. T. M. Designation A-7 with a minimum copper content of 0.20 percent. The posts shall be of the section, weight, length, and be galvanized as shown on the plans. Chain link fence will be used in: Item P-162. (c) Class F, wood picket fence. The wooden pickets and posts shall meet all the requirements of Item P-163. Wood picket fence will be used in: Item P-163. 90-24 DRAINAGE PIPE. The material requirements for drainage pipe shall be as follows: (a) Clay pipe for underdrains, storm sewers, and culverts. The pipe shall conform to A. A. S. H. O. Specification M-65. If the pipe is required to be perforated, the perforations shall conform to Item D-705. Clay pipe will be used in: Item D-701 or D-705. (b) Concrete pipe for underdrains, storm sewers, and culverts. The pipe shall conform to A. A. S. H. O. Specifications M-86, M-87, or M-41. If the pipe is required to be perforated, the perforations shall conform to Item D-705. Concrete pipe will be used in: Item D-702 or D-705. (c) Corrugated metal pipe for underdrains, storm sewers, or culverts. The pipe shall conform to A. A. S. H. O. Specification M-36. If the pipe is required to be bituminous-coated or coated and paved, the coating and pavement shall conform to Item D-703. If the pipe is required to be perforated, the perforations shall conform to Item D-705. Corrugated metal pipe will be used in: Item D-703 or D-705. (d) Cast iron pipe for storm sewers and culverts. The pipe shall conform to A. A. S. H. O. Specification M-64. Item D-704. 90-25 DRAINAGE STRUCTURES. The material require ments for drainage structures shall be as follows: (a) Brick. The brick shall conform to A. A. S. H. O. Specification M-91. (b) Concrete. Concrete materials shall conform to Item P-610. (c) Mortar. The Portland cement for mortar for masonry and similar work shall conform to A. S. T. M. Designation C-150, Type 1. The sand shall conform to A. A. S. H. O. Specification M-45. (d) Castings. The castings for frames, covers, and gratings shall conform to one of the following: 1. Gray iron castings shall conform to A. A. S. H. O. Specification M-105. 2. Malleable iron castings shall conform to A. A. S. H. O. Specification M-106. 3. Steel castings shall conform to A. A. S. H. O. Specification M-103. (e) Steel Grates and Frames. Steel for grates and frames shall be structural steel conforming to A. A. S. H. O. Specification M-94. The steel, after fabrication, shall be galvanized, meeting A. A. S. H. O. Specification M-111. (f) Masonry Stones. Masonry stones shall conform to Item D-753. (g) Gutter Stones. Gutter stones shall conform to Item D-755. The details for all material and construction requirements will be found in the items for different types of drainage structures as follows: Items D-751, D-752, D-753, D-754, and D-755. 763591°-484 SECTION 91 TURFING MATERIAL DETAILS 91-01 GENERAL. These specifications cover the requirements of materials used for turfing or other plantings on airports. However, it is readily recognized that, due to a wide variation in climatic and soil conditions throughout the country, many different types and species of materials will be required for the establishment of turf and in landscaping. Some materials, such as species of grass seed, trees, shrubs, vines, etc., cannot be prescribed as standards but will have to be covered by special provisions for each construction project. In such cases only very general requirements can be enumerated in this section. The special provisions which become a part of the turfing specifications may add materials not listed in the standard specifications or delete any of those included therein. Only approved materials conforming to the requirements of the specifications shall be used in the work. All materials may be subject to inspection and tests at any time during the progress of their preparation or use. Representative preliminary samples of the materials shall be submitted by the contractor, when required, for examination and test. Materials shall be stored and handled so as to insure the preservation of their quality and fitness for use. Testing and sampling of seed and fertilizers shall be done in accordance with the latest "Rules and Regulations Under the Federal Seed Act," in effect as of the date of the purchase order, and using approved methods in determining compliance with applicable State fertilizer laws, respectively. 91-02 SEEDS. The seed mixture to be furnished and the minimum percentage by weight of pure live seed of each species in each lot of seed and the maximum percentage of weed seed shall be as stated in the special provisions. When the total percentage of pure live seed furnished is higher than the minimum required, the ratio of seed of the named species shall be approximately the same as that stated in the special provisions. All seed used shall be labeled in accordance with U. S. Department of Agriculture "Rules and Regulations Under the Federal Seed Act," in effect on the date of the purchase order. All seed shall be furnished in standard containers, unless exception is granted by the engineer. Seed which has become wet, moldy, or otherwise damaged in transit or storage will not be accepted. Seed will be used in: Items T-901 and T-902. |