Item 18 - Traffic Signal Installation at Segerstrom Avenue and Rosewood Avenue

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CITY OF SANTA ANA SPECIFICATIONS PROJECT NO.: 25-6030 TRAFFIC SIGNAL INSTALLATION AT SEGERSTROM AVENUE AND ROSEWOOD AVENUE 3. Sign Frame & Panel Construction: The width or the sign shall be 18" (450 mm). Length to be determined by the text and shall not be less than 48" (1200 mm) or more than 96" (2400 mm). a. Frames: The frame shall be aluminum channel extrusion, 1.25" x 1.25" x. 125" (35 x 35 x 3 mm) wall thickness. Alloy 6063-T5. All joints of the aluminum channel shall be welded with an inert gas shielded -arc welding process using 4043 electrode filler wire in accordance with good shop practice. The width of the filler wire shall be equal to the wall thickness of the channel being welded. The top of the frame will have two 2" x 2" x .250" (53 x 53 x 6 mm) wall thickness channel members welded and fastened to the frame with stainless steel bolt, washer, lock nuts and cotter pins. The adjustable swing assembly will be attached to these members. b. Assembly: A sign panel shall be fastened to both sides of the channel frame to make a double-faced unit. Each sign panel must be a continuous sheet, no vertical or horizontal splices to make up one panel. The sign panels shall be affixed to the frame with 3/16" (5 mm) diameter blind pop rivets, alloy 5052, or a type approved by the City. They must be aluminum approved. The exposed face of the rivet shall be of similar shade and compatible with face color of the finished sign. The rivets shall be placed through the face of the sign with the wall of the channel placed against the back of the sign panel. Rivets shall be placed no closer than 1/2" (13 mm) from the edge of the sign panel and a maximum of 8" (200 mm) apart from one another. All rivets must penetrate the web of the channel frame for proper grip strength between sign panel and frame. The swing hinge is attached to the 2" x 2" (53 x 53 mm) channel member with a 1/4" (7 mm) stainless steel bolt and bronze bushing, and then secured with any - lock nut. 4. Mounting Assemblies: The top of the sign frame shall have two free swinging mounting brackets. They shall be of all aluminum, bronze, and stainless steel parts. The 5" (125 mm) long stainless steel bolt for fine adjustments shall have nuts and lock washers, or self- locking nuts and cotter key. Dampening springs are required. The bracket assembly shall permit the sign to swing perpendicular to the support hardware.