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CITY OF EVERETT WEST MARINE VIEW DRIVE/ALVERSON AND 41 ST ST/GRAND AVE <br />PEDESTRIAN IMPROVEMENTS <br />STATE FUND# HLP-PB15(032) <br />WO #3630 July 25, 2024 <br />85 <br />1 Provide manholes, inlets, and catch basins that upon final acceptance of the Work <br />2 conforms to the following COE Standard Drawings requirements: <br />3 1. Manholes No. 605, 606 and 607 as applicable. <br />4 2. Inlets No. 401 <br />5 3. Catch Basins No. 402, 403, 404 and 405 as applicable. <br />6 <br />7 Revise the last paragraph to read: <br />8 <br />9 See Sections 7-05.3(3) and 7-08 for pipe connection requirements. <br />10 <br />11 7-05.3(1) Adjusting Manholes and Catch Basins to Grade <br />12 Delete both paragraphs of 7-05.3(1) and substitute the following: <br />13 Adjust manholes, catch basins and other structures to final grade after <br />14 completing pavement operations. Carefully re-establish the center of each <br />15 structure from Contractors previously established references. <br />16 <br />17 Cut pavement in neat circle having a minimum diameter of 2-feet beyond the <br />18 casting cover. Remove pavement and base material, maintaining the neat circle, <br />19 to permit casting and frame removal. Adjust casting and frame to proper grade. <br />20 Place cast iron frame on concrete blocks or concrete adjusting rings and wedge <br />21 up to the desired grade using plastic wedges. Wood or metal wedges are not <br />22 allowed. The Backfill around finished casting frame to within 1-1/2 inches of <br />23 finished pavement surface using commercial concrete. <br />24 <br />25 After concrete has set a full 24-hours, paint the edges of the asphalt concrete <br />26 pavement and the outer edge of the casting with hot asphalt cement. Place hot <br />27 asphalt concrete to match finished pavement surface and compact with hand <br />28 tampers and a patching roller. Asphalt concrete and cement concrete shall be <br />29 considered incidental to the unit price of the structure being adjusted. <br />30 <br />31 Match the new patch with existing paved surface for texture, density, and <br />32 uniformity of grade. Carefully paint the joint between the patch and the existing <br />33 pavement shall then be carefully painted with hot asphalt cement or asphalt <br />34 emulsion and immediately cover with dry paving sand before the asphalt cement <br />35 solidifies. <br />36 <br />37 Thoroughly mortar and plaster the inside throat of the structure. <br />38 <br />39 7-05.3(3) Connections to Existing Manholes <br />40 Delete all three paragraphs of 7-05.3(3) and substitute the following: <br />41 Verify existing manhole rim and invert elevations prior to construction. Provide <br />42 verification documentation by means of a Submittal to the Engineer for approval. <br />43 Submittal shall be in accordance with 1-05.3 of these Special Provisions. <br />44 Immediately bring discrepancies in invert elevations to the attention of the <br />45 Engineer. <br />46 <br />47 Unless specified otherwise, match the new connection pipe crown elevation to <br />48 the existing pipe or pipe crown elevation. Rechannel the existing manhole in <br />49 accordance with COE Standard Drawing 605 to provide a flow transition free from <br />50 rough, jagged or protruding edges that could catch debris. <br />51