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CITY OF SANTA ANA <br /> SPECIFICATIONS <br /> PROJECT NO.: 25-6030 <br /> TRAFFIC SIGNAL INSTALLATION AT SEGERSTROM AVENUE AND ROSEWOOD <br /> AVENUE <br /> 3. Sign Frame &Panel Construction: <br /> The width or the sign shall be 18" (450 mm). Length to be determined by the text <br /> and shall not be less than 48" (1200 mm) or more than 96" (2400 mm). <br /> a. Frames: <br /> The frame shall be aluminum channel extrusion, 1.25"x 1.25"x .125"(35 x 35 <br /> x 3 mm) wall thickness. Alloy 6063-T5. All joints of the aluminum channel <br /> shall be welded with an inert gas shielded-arc welding process using 4043 <br /> electrode filler wire in accordance with good shop practice. The width of the <br /> filler wire shall be equal to the wall thickness of the channel being welded. <br /> The top of the frame will have two 2" x 2" x .250" (53 x 53 x 6 mm) wall <br /> thickness channel members welded and fastened to the frame with stainless <br /> steel bolt, washer, lock nuts and cotter pins. The adjustable swing assembly <br /> will be attached to these members. <br /> b. Assembly: <br /> A sign panel shall be fastened to both sides of the channel frame to make a <br /> double-faced unit. Each sign panel must be a continuous sheet, no vertical or <br /> horizontal splices to make up one panel. <br /> The sign panels shall be affixed to the frame with 3/16"(5 mm)diameter blind <br /> pop rivets, alloy 5052,or a type approved by the City. They must be aluminum <br /> approved. The exposed face of the rivet shall be of similar shade and <br /> compatible with face color of the finished sign. The rivets shall be placed <br /> through the face of the sign with the wall of the channel placed against the back <br /> of the sign panel. Rivets shall be placed no closer than '/z" (13 mm) from the <br /> edge of the sign panel and a maximum of 8"(200 mm)apart from one another. <br /> All rivets must penetrate the web of the channel frame for proper grip strength <br /> between sign panel and frame. <br /> The swing hinge is attached to the 2"x 2" (53 x 53 mm) channel member with <br /> a'/"(7 mm)stainless steel bolt and bronze bushing,and then secured with any- <br /> lock nut. <br /> 4. Mounting Assemblies: <br /> The top of the sign frame shall have two free swinging mounting brackets. They <br /> shall be of all aluminum, bronze, and stainless steel parts. The 5" (125 mm) long <br /> stainless steel bolt for fine adjustments shall have nuts and lock washers, or self- <br /> locking nuts and cotter key. Dampening springs are required. The bracket <br /> assembly shall permit the sign to swing perpendicular to the support hardware. <br /> 74 <br />