Specifications include, but are not limited to: It is the intent to describe in these specifications minimum functional and design requirements for aluminum light poles for the City of Madison, Wisconsin. All poles shall conform to the City drawing (SK0101), the manufacturer’s approved shop drawing, and these specifications. Exceptions to these specifications and City drawing shall be submitted to the Engineer for review prior to manufacturing. The poles shall be round aluminum shafts with a base welded to the lower end of each. A cast base in lieu of the flat plate base shown on the drawing is also acceptable. All poles shall be designed to withstand a 90-mile-per-hour sustained wind velocity and a 117-mile-perhour gust velocity, with one light fixture attached. A. Shaft A grounding nut or nut holder for accommodating a ½ inch 13 UNC threaded bolt or stud shall be provided on the inside of the shaft immediately opposite the center of the handhole. After fabrication and assembly, there shall not be any sharp edges, corners or points on both the pole interior and exterior except at the base plate. Heat treating after fabrication shall be done to restore to design alloy. B. Pole Coatings The manufacturer shall confer with Jerry Schippa of City Traffic Engineering (608-267-1969) as to the specifications for a black anodized finish in order to assure the City that the City’s desires are being fulfilled. The poles shall be spun using a fine (120) grit. The pole extrusion, spinning and anodizing shall provide a uniform finish appearance free from any streaking. A two-step matte black anodizing finish (AA-C22-A44-Black) shall be used or an alternate process which produces a dark black finish. A light black finish is not acceptable.
