The fabricat or shall date all signs (month, year) at the completion of fabrication. That date constitutes the start of the field performance obligation period. The installe r shall date all signs (month, year) at the completion of installation .
The sheeting manufacturer warrants to the Department that all materials furnished unde r this Specification will be new, of good components and workmanship and agrees to the following conditions. Retroreflective sheeting processed and applied to sign blank materials in accordance with the manufacturer’s manuals shall be warranted by the manufacturer to perform effectively as stated in this section. The manufacturer’s manuals shall contain a complete descriptive explanation of all the requirements necessary of the sign fabricator.
Cover the cost of restoring the sign face in its field location to its original effectiveness at no cost to the Department for materials, labor and equipment. In addition to the reflective requirements for Grade B fluoresce nt orange, the sheeting shall at least maintain a total Luminance Factor (Y) of 25 in accordance with ASTM D4956 and a Fluorescence Luminance Factor (YF) of 13% in accordance with ASTM E2301 for 3 years. Maintain at least 80% of fluorescent orange sheeting reflectivity for years 1 and 2.
Replace the sheeting required to restore the sign face to its original effectiveness. Maintain 50% of fluorescent orange sheeting reflectivity for year 3.
Replace 50% of the sheeting required to restore the sign face to its original effectiveness. 1092 -3 CERTIFICATION Provide a Type 6 material certification in accordance with Article 106 -3 for all retroreflective sheeting used in the manufacture of signs certifying that the sheeting meets Section 1092. GROUND MOUNTED SIGNS -1 GROUND- MOUNTED SIGN SUPPORTS
Fabricators of breakaway or simple steel beam sign supports shall be AISC Category I certified. Steel supports for Type A and B ground mounted signs shall be galvanized rolled steel sections, either breakaway or simple design, as required by the contract. Fabricate supports from plates, W shapes, and S shapes, as required by the contract, and they shall conform to ASTM A36. Splices in the supports will not be permitted. Perform galvanizing before assembly that conforms to ASTM A123. Cutting steel supports to length after they have been galvanized will not be permitted in new construction. The support(s) shall be
uniformly straight to within 1/8 inch tolerance for pieces less than 20 f eet in length, and 1/4 inch tolerance for pieces over 20 f eet in length. Fabricate high strength bolts, nuts and washers required for breakaway supports from steel in accordance with ASTM F3125 and galvanize in accordance with ASTM B695, Class 55.
Make 3 lb steel U -channel supports out of rerolled rail steel or new billet steel, conforming to the mechanical requirements of ASTM A499, Grade 60, and t he chemical requirements of ASTM A1, for rails having nominal weights of 91 lbs. per yard or greater. Proportion the cross section so a moment of 1,450 ft -lb, applied to the cross section normal to the flanges, will produce an extreme fiber stress no grea ter than 39,500 psi. Use posts that weight 3 lbs/lf . Punch or drill all posts with 3/8 inch diameter holes on the centerline, spaced 1 inch on centers, starting 1 inch from the top and extending to the bottom of the supports . Galvanize these posts after fabrication for the full length and total area in accordance with ASTM A123. The zinc coating inside of the 3/8 inch diameter holes shall not exceeds pecification requirements enough to prevent a 5/16 inch diameter bolt from freely passing through. Use U-channel support sections of the same general configuration as that shown in the contract, however minor variations may be considered acceptable by the Engineer provided all other requirements are met.
Use 2 lb steel U -channel supports that are variable length galvanized steel, U -shaped channel supports . Fabricate the U -channel supports from steel meeting ASTM A1008 or ASTM A499, or alternate approved by the Engineer . The posts shall weigh 2 lbs/lf , and be of the length necessary to meet the erection requirements of the contract. Before galvanizing, punch or drill 3/8 inch diameter holes on 1 inch centers, beginning 1 inch from the top of the post, for a mi nimum distance equal to the vertical dimension of the respective sign or mile marker. Galvanize these posts after fabrication in accordance with ASTM A123. The zinc coating inside of the 3/8 inch diameter holes shall not exceed Specification requirements enough to prevent a 5/16 inch diameter bolt from freely passing through. U-channel support sections shall be of the same general configuration as that shown in the contract, however, minor variations may be considered acceptable by the Engineer, provided a ll other requirements are met.
Use steel square tube supports of variable length galvanized steel. The support shall be a minimum 14 gauge steel square tube. Before galvanizing perforated square tubes punch or drill all posts w ith 7/16 inch diameter holes on the centerline, spaced 1 inch on centers on all four sides , starting 1 inch from the top and extending to the bottom of the posts. Galvanize perforated supports after fabrication for the full length and total area in accor dance with ASTM A 653, Grade 50, meeting G90 galvanizing requirements . The zinc coating inside of the 7/16 inch diameter holes shall not exceeds pecification requirements enough to prevent a 3/8 inch diameter bolt from freely passing through. Steel square tube support sections shall be of the same general configuration as that shown in the contract, however, minor variations may be considered acceptable by the Engineer, provided all other requirements are met.
Wood supports shall conform to Se ction 1082.