23A - PROJ - WATER MAIN IMPROVEMENTS

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CITY OF SANTA ANA SPECIFICATIONS PROJECT NO. 11 -6416 SEVENTEENTH STREET WATER MAIN IMPROVEMENTS the plans. The sign backing material shall be anodized rolled sheet aluminum and shall be one piece with drilled holes for mounting. All signs installed in parkways, sidewalks or pedestrian areas shall have a minimum of 7 feet of vertical clearance from the bottom of the lowest sign to the surrounding surface. Street name signs shall have a minimum 9 feet of vertical clearance. All signs installed in raised median areas shall have a minimum vertical clearance of 4 feet from the existing surface unless shown otherwise on the plans. When two signs are installed on one post, the signs shall be installed in the proper standard vertical positions unless shown otherwise on the plans. Regulatory, Warning and Guide signs shall be posted above parking restriction signs. The Engineer shall determine the proper order for multiple signs. Sign panels shall not be overlapped. 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. 2. Material and Hardware a. Roadside signs shall be fabricated using 0.080 -inch thick aluminum sheeting and traffic signal mastarm mounted signs shall be fabricated using 0.10 -inch thick aluminum sheeting. b. ASTM D4956 -09 Type XI (3M Diamond Grade DG3 Series 4000 or equivalent) reflective sheeting shall be used for the followings: i. All Regulatory signs except parking restrictions signs. ii. All Warning signs. c. For school related signs, reflective sheeting shall be 3M Diamond Grade (Fluorescent) Series 4083 DG3 or equivalent. d. 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). e. Temporary or construction signs shall be ASTM D4956 -09 Type III, IV (3M High Intensity Prismatic series 3930 or equivalent). f. 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. T -2e 23A -92