Specifications include, but are not limited to: 1. WIRE SPECIFICATIONS FOR GUTTER BROOMS: a. Physical Ingredients: The wire shall be C1065 high carbon, carbon .60 / .70, Manganese .60 / .90 Phosphorous .40 maximum, flat spring steel wire, hardened to a hardness for good spring and abrasion resistance, but not hard enough to cause premature fatigue breaking. The wire shall have hardness within the range of 72 to 75 on the Rockwell “A” scale. Tensile strength shall be in the 215,000 to 230,000 PSI range. b. Wire Dimensions: The wire shall be 26” x .125 x .025”. Tolerance shall be within plus or minus .005 in width, .001” in thickness and 3/16” in length. The edge shall be smooth and straight with a minimum of sideway’s curvature. 2. GUTTER BROOM SPECIFICATIONS: a. Quick Change Aluminum Base Gutter Brooms: The vendor shall supply a four piece quick change 1” thick aluminum alloy gutter broom (four segments per set) drawn up into position by a bottom bracket held by two 5/8” grade 5 bolts. Gutter broom segments shall have 24 round holes in the outside row closest to the curb, 18 round holes in the second row for a total of 42 round holes. It is unacceptable to position wire in a third row away from the curb becoming less effective. Wire holes shall be round to securely hold the wire straight. Rectangular or square holes, which allow wire to move and shift causing aluminum base to wear out prematurely, will not be acceptable. All wire holes must be filled (blank holes will not be acceptable) with sixteen 26” wire per hole folded in the center causing thirty-two wire ends to meet the sweeping surface at a 50 angles. Total weight of wire per set shall be 60 pounds. The vendor shall provide replacement segments for those segments, which are worn out or damaged beyond use through normal street sweeping operations. At the end of the contract, all segments provided by the vendor shall remain the property of the vendor. If a bidder proposes to fill other than the OEM type of segments provided for Mobil, Elgin, and FMC Sweepers, the bidder must have the proposed segments approved by the Public Works Manager or designee prior to award of contract to ensure that the segments will fit City equipment. b. Gutter Broom Segment Guaranteed: Aluminum gutter broom segments shall be guaranteed against all breakage during normal operating conditions. Any segments broken during normal operating procedures will be replaced free of charge by the vendor with no adjustments or deduction for the amount of wear on the broken segments. 3. MAIN BROOMS: The City’s main broom cores shall be utilized until they are not useable for rewinding. In this event, the vendor shall supply cores a. Core Specifications: The vendor shall provide broom cores as part of vendor’s filled broom price. The broom cores shall have tightly wrapped spirals. Spirals shall have 3/8” lips that will meet and be joined together and welded in four places around circle over a 12 gauge tube. U-shaped spirals will not be acceptable. Inside tube end plate shall be 3/8” thick and match manufacturer’s drive shaft bolt pattern. Main broom core shall be 10 ¾” diameters with 36 spirals turns, plus or minus one, and equipped with approximately 120 feet of 5/16” galvanized cable. Cores shall have doubled key way stub shafts bolted to each end using grade five bolts. Bolt hole center to center shall be 4 ½”. b. Minimum Weight: Broom cores shall be rewound with minimum of 150 pounds of polypropylene broom bristles. Any broom found to contain less than 150 pounds of bristles shall be picked up by the vendor and rewound at no additional cost to the City. c. Removal of Old Bristles from Cores: Vendor shall be responsible for the removal of the old bristles from the broom cores prior to their being rewound. This shall be accomplished at no additional cost to the City. Vendors shall be responsible for the pickup of old cores from and the delivery of filled cores to the City equipment yard. Pickup of cores shall be accomplished within two (2) working days of notification by the City, and delivery of filled cores shall be made within four (4) working days of pickup date. Any and all transportation costs shall be the responsibility of the vendor. d. Physical Properties of Polypropylene Broom Bristles: Material: Virgin 3 melt Polypropylene plastic, prime grade Specific Gravity: 0.90 Water Absorption: .08% or less Melt Range: 330 to 338 degrees Fahrenheit Tensile Strength Range: 31,000 – 32,000 PSI Breaking Load: 204 pound (average) Elongation: 20% or better Mildew Resistance: Extremely impervious to oils, greases, acids and other common chemicals. Bristles shall have an approximate rectangular cross section of .075” x .105” and shall be 26” (+ 1/8”) in length and crimped. Bristles shall be straight (other than designed crimped feature).