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i SCOPE OF WORK If signposts are not long enough to provide standard clearance for all signs, a longer post shall be furnished and installed. Signs shall be installed at right angles to approaching traffic unless shown otherwise on the plans. In no case shall signs be installed on wood utility poles or on wood street light poles. The City may modify installation requirements as necessary. B. Material and Hardware 1. Roadside signs shall be fabricated using 0.080-inch thick aluminum sheeting and traffic signal mast arm mounted signs shall be fabricated using 0,10-inch thick aluminum sheeting. 2. ASTM D4956-09 Type Xt (3M Diamond Grade DG3 Series 4000 or equivalent) reflective sheeting shall be used for the following: a. All Regulatory signs except parking restrictions signs. b. All Warning signs. 3. For school related signs, reflective sheeting shall be 3M Diamond Grade (Fluorescent) Series 4083 DG3 or equivalent. 4. For all other signs, including parking restrictions and Street Sweeping signs, the reflective sheeting shall be ASTM D4956-09 Type III, IV (3M High Intensity Prismatic series 3930 or equivalent). 5. Temporary or construction signs shall be ASTM D4956-09 Type III, IV (31M High Intensity Prismatic series 3930 or equivalent). 6. All signs, except for temporary or construction signs, shall have graffiti coating or film (such as 3M 1160 Overlay) as recommended by the manufacturer of the reflective material. Neither the color nor the reflective intensity of the finished sign panel shall be significantly diminished by the use of graffiti remover when used in a manner approved by Caltrans and the sheeting manufacturer, Reflective sheeting will be applied to the sign panel utilizing the method approved by the manufacturer of the sheeting and shall produce a durable bond equal to or greater than the strength of the reflective sheeting. No air pockets or bubbles shall exist between the sheeting and the aluminum backing. All sign panels furnished by the Contractor shall be new with no scratches or tears in the reflective sheeting. No splice will be allowed in the sign panel reflective sheeting other than that which occurs in the manufactured roll of reflective sheeting on sign panels with a minor dimension of 48" or less. On all rectangular sign panels, the splice will be horizontal. No finished sign panel shall have more than one(1) splice and no splice will fall within 2" of the sign panel edge. When splices do occur, the adjoining reflective sheets shall be color matched under both incident and reflective light. City of Santa Ana Page 15 of 71