1624 - ZINC COATINGS
1600-39 Section 1624
ZINC COATINGS 1624.1 DESCRIPTION This specification governs the requirements for zinc coat ings applied to wrought and cast steel or cast iron products and components that are not specifically addressed within DIVISION 1600 . 1624.2 REQUIREMENTS Wrought and cast steel products not specifically governed by DIVISION 1600 may be zinc coated in compliance with ASTM A 153 for hot dip galvanizing. Cast iron products may be zinc coated by the hot dip galvanizing process in compliance with ASTM A 153, also refer to SECTION 1613 and ASTM A 47, Supplementary Requirement S5, with regard to ferritic malleable iron castings. When hot dip galvanizing cast iron produc ts, exercise caution to avoid galvanizing embrittlement. Wrought and cast steel or cast iron products may also be corrosion protected by the mechanical deposition of a zinc coating in compliance with ASTM B 695 as an alternative method, particularly when galvanizing embrittlement may be a factor. The Class required for ASTM B 695 is to be determined from the ASTM A 153 minimum coating requirem ent for the product Class of Material. When corrosion protection by zinc coating is required, it must be specified in the Contract Documents. The method of coating, however, is to be at the discretion of the product manufacturer and selected from the alternatives addressed within this subsection. 1624.3 TEST METHODS The tests required for a product are to be based upon the consensus of the manufacturer and the KDOT. Conduct these tests as required by the applicable ASTM, or other material specifications of subsection 1624.2 . Coating thickness may be measured by any one of the methods specified in ASTM B 633 and by eddy current methods, ASTM E 376 (B 244 may also be useful as a technique guideline), provided that appropriate calibration procedures and standards have been applied. The magnetic induction and eddy current methods are nondestructive in nature and are preferred. Destructive techniques, i.e ., coating removal, may be utilized as referee methods. 1624.4 PREQUALIFICATION Not applicable. 1624.5 BASIS OF ACCEPTANCE Inspection and testing by field personnel of delivered products and components for compliance with dimensional and corrosion protection coating requirements, qu ality of workmanship, delivery condition, approval of any required associated documentation, and any other requirements as ma y be specified in the Contract Documents. Measure coating thickness according to any of the procedures of subsection 1624.3 . 1625 - CAST BRONZE PRODUCTS
1600-40 Section 1625
CAST BRONZE PRODUCTS 1625.1 DESCRIPTION This specification governs products for various applications cast from copper alloys generally classified as bronze. 1625.2 REQUIREMENTS
a.General. Provide castings that comply with the design, dimensions, requirement for supplemental corrosion protection, and specific fabr ication requirements as specified in the Contract Documents. Unless corrosion protection is specified, provide the cast products in the as-cast and as-machined condition. Bridge number plates are to be of the design and dimensions as specified in the Contract Documents and cast from a copper alloy identified in subsection 1625.2b . as a type to be utilized for general purpose castings. Relief cast the background of the plate re lative to the letters, number s, and border. Make the surfaces of the letters, numbers, and border lie in a single plane and polish them. Provide a relief from plane to background of about 1/8 inch. Make letters and numbers of the condensed Roman style approximately 1 ½ inches in height. Provide a matte non-reflective surface texture for the bac kground. Coat the finished plates for corrosion protec tion with a clear organic coating that is durable and ultraviolet resistant.
b.Material Specifications . The copper alloy utilized for bearing devices where the nominal contact pressure does not exceed 2500 psi, e.g., bridge bearing plates, complies with ASTM B 22, Copper Alloy UNS No. C91100. The copper alloy utilized for bearing devices where the nominal contact pressure does not exceed 1000 psi is to comply with ASTM B 22, Copper Alloy UNS No. C93700. Other copper alloys governed by ASTM B 22 may be utilized providing the KDOT grants prior approval. Use copper alloys for general purpose castings with a minimum copper content of 80%, and enhanced castability for the production of accurate castings with a high quality surface finish and a low level of discontinuities. Avoid beryllium copper alloys if at all possible. If they must be utilized, it is the manufacturer's responsibility to provide adequate warnings concerning the high toxicity of beryllium released to the atmosphere and potentially ingested during machining, grinding, welding, etc. operations. It is also the manufacturer's responsibility to document the precautionary procedures required to avoid exposure to beryllium if these operations must be conducted. 1625.3 TEST METHODS Not applicable. 1625.4 PREQUALIFICATION Not applicable. 1625.5 BASIS OF ACCEPTANCE Receipt and approval of a Type D certification as specified in DIVISION 2600 . Inspection by field personnel of all products and components for compliance with dimensional and supplemental corrosion protection coating requirements when corrosion protection is specified, quality of workmanship, delivery condition, approval of the required associated documentation, and any other requirements as may be specified in the Contract documents. 1626 - ALUMINUM ALLOYS
1600-41 Section 1626
ALUMINUM ALLOYS 1626.1 DESCRIPTION This specification governs wrought and cast aluminum alloys with associated welding practices and standards for products intended for applications other than sign fabrication. 1626.2 REQUIREMENTS
a.General. The products are to comply to the design, dimensions, requirement for supplemental corrosion protection, alloy and temper designation, and specific fabrication requirements as specified in the Contract Documents. Tolerances are designated in the Contract Docu ments or as specified by the applicable ASTM or other referenced standard. The alloys and temp ering treatments are to be selected from subsection 1626.2b as a recommendation guideline. A selected alloy and treatme nt may be utilized as the final product listed in the guideline or as the base metal for the fabrication of other products. Other alloys and temper designations may be specified providing that the KDOT grants prior approval.
b.Material Specifications .
1.Fasteners. The threaded and non-threaded fastener components governed through subsection 1627.2b(1) are applicable for and subject to this subsection.
2.General product classification. Recommended aluminum alloys and te mpering treatments according to gene ral product classification. The specific alloy and temper designation selected is to be in accordance with the governing ASTM standard and contingent upon the intended application of the final product. TABLE 1626-1: ALUMINUM ALLOYS Product Classification Standard Cast products ASTM B 26 ASTM B 108 ASTM B 618 Alloys (cast): 356.0, A356.0, B443.0, A444. Temper designations: F, T4*, T51, T6, T61, T7, T71 Sheet and plate products. ASTM B 209 Alloys (wrought): 1100, 3003, 5083, 5456, 6061. Temper designations: H12, H14, H16, H116, H321, O, T6. Pipe and tubular products. ASTM B 210 ASTM B 241 Alloys (wrought): 6061, 6063. Temper designations: T6, T832. Bar, rod, wire, profiled (shaped), and tubular products. ASTM B 211 ASTM B 221 ASTM B 316 Alloys (wrought): 1100, 5083, 5456, 6005, 6053, 6061, 6063, 6351. Temper designations: H111, O, T5, T6, T61. Structural profile, and structural pipe and tubular products. ASTM B 308 ASTM B 429 Alloys (wrought): 6061, 6063. Temper designations: T6. *Radiograph all products cast from alloy A444, temper designation T4, through ASTM B 108 to an acceptance level Grade C as a minimum and have a matte non-reflective surface finish texture
3.Welding of aluminum alloy products. 1626 - ALUMINUM ALLOYS
1600-42 Welding is to be conducted accord ing to the recommendations of the ASTM standard that governs the
product or basis metal and in accord ance with the specifications and reco mmended procedures and practices of ANSI/AWS A5.10 and D1.2. 1626.3 TEST METHODS Conduct all tests required by the applic able ASTM or ANSI/AWS specification of subsection 1626.2b . 1626.4 PREQUALIFICATION Not applicable. 1626.5 BASIS OF ACCEPTANCE Receipt and approval of a Type B certification as specified in DIVISION 2600 . Inspection by field personnel of all products and components for compliance with dimensional and supplemental corrosion protection coating requirements when corrosion protection is specified, quality of workmanship and delivery condition.
Source: Kansas Standard Specifications for State Road and Bridge Construction, 2015 Edition. Pages 784–787 of 978.