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I II I C I MI. 17 �I�I�IP K aluminum, or galvanized steel, meeting the requirements specified on the Design Standards, Index Nos. 1 1860 through 11865. 700 -2.4 Overhead Sign Structures: 700 -2.4.1 Department's Design: When the overhead sign structure is detailed in the plans, submit shop drawings to the Department for approval as specified in Section 5. Prior to the submittal of the shop drawings, determine the actual length of support columns for all sign structures on the basis of existing field conditions and include these lengths on the shop drawings. 700 -2.4.2 Contractor's Design: When the overhead sign structure is not detailed in the plans, submit to the Department a sign structure design utilizing steel structural members. Meet the requirements of this Section and the AASHTO Specification for the Design and Construction of Structural Supports for Highway Signs, Luminaires and Traffic Signals. Use a design wind speed as shown on the Contract drawings. When a sign structure is attached to a bridge or wail structure, ensure that the loads from the sign structure applied to the bridge or wall structure are equal to or less than those shown on the Contract drawings. When the sign support is not on a structure, the Contractor is responsible for the design of the foundation. Have designs and shop drawings prepared by a Specialty Engineer or the Contractor's Engineer of Record, and submit them to the Department for review and approval in accordance with Section 5. Determine the actual length of support columns for all sign structures on the basis of existing field conditions, and include these lengths in the shop drawings and calculations. 700 -2.5 Sign Background: Meet the requirements of Section 994. Use Type III, IV, V or VII sheeting for background sheeting, white legends, borders and shields on all signs, excluding STOP, DO NOT ENTER, and WRONG WAY. Use Type VII sheeting for STOP, DO NOT ENTER and WRONG WAY signs. Use Type III, IV, V or VII yellow -green fluorescent sheeting for S1 -1 school advance signs and supplemental panels used with S1 -1, S3 -1 and S4 -5 school signs. Do not mix signs having fluorescent yellow -green sheeting with signs having yellow reflective sheeting. Use fluorescent orange Type VI or VII for all orange work zone signs. Mesh signs shall meet the color, daytime luminance and nonreflective property requirements of Section 994, Type VI. 700 -3 Materials. 700 -3.1 General: Meet the materials requirements shown below and any additional requirements which the plans might show. 700 -3.2 Concrete: For footings, use Class II concrete meeting the requirements of Section 346, 700 -3.3 Reinforcing Steel: For reinforcing steel in footings, meet the requirements of Section 415. 700 -3.4 Aluminum Materials: 700 -3.4.1 General: For aluminum materials, meet the general provisions of 965 -1. 700 -3.4.2 Sheets and Plates: For aluminum sheets and plates for sign panels, meet the requirements of ASTM B 209, [ASTM B 209M], Aluminum Association Alloy 6061 -T6, 51 54 -H38 or 5052 -H38 and those shown in the plans. March 2007 01000 -151 03- 4122.D