X sheeting. Type IV or higher sheeting shall be used for all sheet signs except as specified herein. For contracts let on or after September 1, 2020, Type VIII or higher reflective sheeting shall be used for sheet signs with a red background color and Type XI sheeting shall be used for all panel signs. Type XI highway sheeting shall be from the QPL of Reflective Sheeting or from a manufacturer that has complete test results from the PEAS showing that the ASTM D4956 minimum requirements have been met. A Type C certif ication in accordance with 916 shall be provided for Type XI sheeting. The sheeting type for the sign copy and border shall be the same type or higher than the sheeti ng type used for the background. Reflective sheeting materials will be placed and maintained on the QPL in accordance with 110 ITM 806, Procedure H. A non-prorated manufacturer’s written warr anty against delamination, blistering, discoloration, or 15% or greater loss of retro-reflectivity compared with the minimum initial ASTM D4956 value, shall be provided to, and in favor of, the Department by the reflective sheeting manufacturer. The warr anty shall cover a period of 10 years.
For contracts let on or after September 1, 2019, Type IV or higher white and fluorescent orange reflective sheeting shall be used for drums utilized on interstate routes and ramps. For contracts let on or after September 1, 2020, Type IV or higher white and fluorescent orange reflective sheeting shall be used on all drums, tubular markers, vertical panels, and 42 in. cones. Type V or higher reflective sheeting shall be used on delineators, except for 130 barrier delineators which shall be Type III or higher.
Reboundable reflective sheeting shall be used on plastic drums, flexible delineator posts, and other flexible channelizers. The reflective sheeting shall include an adhesive backing Class 1 or Class 2 in accordance with ASTM D4956.
sheeting shall not incorporate optical elements. The color sh all be black in accordance with SAE-AMS-STD-595, color No. 17038.
Transparent sheeting shall be a mate rial recommended by the background sheeting manufacturer. 919.01 1145
Letters, numbers, and symbols may be demountable. 150 The reflective sheeting shall be of the same type as used on the background and mechanically applied to the properly prepared aluminum in a manner prescribed by the sheeting manufacturer. Each demountable legend unit, supplemental panel, and border frame shall be supplied with mounting holes and shall be secured to the sign face with aluminum rivets with aluminum mandrels. Adhesives that, when removed, may damage the sign face, legend unit, or border shall not be used to hold the unit in place. (d) Fasteners 160
accordance with ASTM A307, grade A. Carbon steel hardware shall be galvanized in accordance with ASTM F2329. Lo ck washers and hex nuts shall be used in lieu of the lock-nuts when carbon steel hardware is furnished. The bolts shall be 5/16 in. by 3 in. hex head, full threaded. The steel flat washers shall be size no. 1/4, 0.738 in. outside diameter, 0.317 in. inside diameter, and 0.051 170 to 0.08 in. thick and in accordance with Military Specifications MS 15795-811. Nylon flat washers shall be 7/8 in. outside diameter, 0.317 in. inside diameter, and shall be 0.032 in. thick. 2. Panel Signs and Temporary Panel Signs The aluminum post clips shall be in accordance with ASTM B26 or ASTM B108, alloy 356.0-T6 and as shown on the plans. Aluminum post clip bolts shall be as shown on the plans and in accordance with ASTM B211, alloy 2024-T4. Lock-nuts shall be in accordance with ASTM B211, alloy 2017- T4. Flat washers shall be in accordance with ASTM B209, alloy Alclad 2024-T4. 180
Aluminum rivets shall be determined by character size and shape but shall not be more than 8 in. on center. All rivets shall be color matched to the legend or supplemental panel being installed. (e) Basis for Use A Type C certification in accordance with 916 shall be provided for the traffic signs and components except those used for temporary construction signs, temporary traffic signs, and temporary panel signs. 190 919.01 1146