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2026 Pavement Maintenance Overlay Special Provisions <br />PW# 3860 SP - 77 March 5, 2026 <br />1 <br />2 <br />3 DIVISION7.GR7 <br />4 Division 7 <br />5 Drainage Structures, Storm Sewers, Sanitary <br />6 Sewers, Water Mains, and Conduits <br />7 <br />8 7-05.docx <br />9 Manholes, Inlets, Catch Basins, and Drywells <br />10 <br />11 7-05.3.docx <br />12 Construction Requirements <br />13 <br />14 GLF 7-05.3(1).docx <br />15 Adjusting Manholes and Catch Basins to Grade <br />16 <br />17 Section 7-05.3(1) of the standard specifications is deleted and replaced with the following: <br />18 <br />19 (******) <br />20 In most work locations, planing depth is equal to overlay depth. Therefore, significant <br />21 iron adjustment is not anticipated, and adjustment of structures to grade shall occur <br />22 only as needed and/or directed by the engineer. <br />23 <br />24 Manholes, catch basins, and other structures shall not be adjusted to grade until the <br />25 pavement is completed, at which time the center of each structure shall be carefully <br />26 relocated from references previously established by the Contractor. The structure <br />27 shall then be brought to proper grade as follows: <br />28 <br />29 1. The existing cast iron ring and cover on manholes and existing cast iron frame <br />30 and grates for catch basins and inlets shall be removed and thoroughly <br />31 cleaned before reinstalling at the new elevation. <br />32 <br />33 2. The asphalt concrete pavement shall be cut and removed to a new circle, the <br />34 diameter of which shall be equal to the outside diameter of the cast iron frame <br />35 plus 2. <br />36 <br />37 3. The roadway surface materials and crushed rocks shall be removed so the <br />38 structure casting can be adjusted to the finished road grade elevation. <br />39 <br />40 4. The cast iron frame shall be placed on concrete blocks and wedged up to the <br />41 desired grade with plastic wedges. <br />42 <br />43 5. The edges of the asphalt concrete pavement and the outer edge of the <br />44 castings shall be painted with tack and HMA Class ‰ PG 64-22 shall be <br />45 placed and compacted in layers to a minimum of 91% of the maximum <br />46 theoretical density of the HMA. <br />47 <br />48 The completed patch shall match the existing paved surface for texture, density, and <br />49 uniformity of grade. The joint between the patch and the existing pavement shall