Purchase of Manhole Sections , Rings , Covers , and Precast Drainage Structures on an Annual Contract

2026-11-03

Manhole rings & covers 1 . All rings and covers to be utilized in pavement areas shall be Vulcan Foundry Model # 1357 or US Foundry Model USF229 or interchangeable . 2 . All rings and covers to be utilized in non - pavement areas shall be Vulcan Foundry Model # 2358 or US Foundry Model USF152 or interchangeable . 3 . Any vendor quoting rings and covers other than those mentioned above must prove to Gwinnett County that such rings and covers are completely interchangeable with the pre - approved makes and models . Tests can be conducted after request to the Purchasing Division at least seven ( 7 ) days prior to bid opening . Any costs borne this testing will be the responsibility of the vendor . 4 . All sewer covers must be stamped " Gwinnett County Sewer ", per attached drawings . 5 . Rings and covers will be purchased as sets . Precast concrete manhole bases , risers , and cones 1 . Shall be of precast reinforced concrete construction made in conformance with ANSI / ASTM C478 . Fiveinch ( 5 ") wall thickness . 2 . Minimum inside diameter : four feet ( 4 '). 3 . Manhole steps shall be equal to M . A . IND ., Inc . # PS - 1 or # PS - 1 - PF . 4 . Spacing of steps shall not exceed twelve ( 12 ) vertical inches . 5 . Only eccentric manhole cones will be accepted . 6 . Gwinnett County will not accept damaged manhole sections ( for example : cracked or chipped sections ).

Georgia

2026-04-29