2017-00492 - ROW permit - Laserfiche WebLink

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18.3 In areas where the sewer is installed adjacent to building pad areas the CONTRACTOR will be required to meet site grading compaction specifications for building pad construction in the utility trench. 19. STREET CONSTRUCTION 19.1 All street work shall be completed in accordance with the City of Orono Standard Details. 19.2 Following utility installation, and prior to placement of aggregate base, the CONTRACTOR shall be required to reshape the street subgrade to provide for positive drainage so that water does not pond in any areas prior to placement of the granular base. The subgrade shall be graded to within +/- .1 ' of the proposed subgrade. The contractor will be required to perform a test roll prior to placement of Select Granular (MNDot 3149.2B2) and the Class 5 base (MNDot 3138 Al). 19.3 The aggregate base shall be class 5 base made up of 100% crushed virgin quarry stone meeting MnDOT Specification 3138 Al and installed in accordance with MnDOT Specification 2211 with compaction by the specified density method. The Contractor may use recycled class 5 base material if approved in writing by the City of Orono, prior to placement of any recycled material the CONTRACTOR shall provide the ENGINEER with a copy of the written approval letter. A manual plate tamper shall be used along the face of the curb. 19.4 The Bituminous Base Course shall be in accordance with MnDOT Specification 2360. A manual plate tamper shall be used along the face of the curb. 19.5 The Bituminous Wear Course shall be in accordance with MnDOT Specification 2360. A rubber tired roller is to be used on all wear course installed. 19.6 Prior to placement of the granular base, the CONTRACTOR shall notify the Engineer that the subbase is prepared. The subgrade shall then be toleranced to within +/- 1/4 inch of design grade. Upon approval of the grade the CONTRACTOR shall perform a test roll of the approved area. The test roll shall be done using a tandem truck with gross weight of 25 tons. A Soils Engineer shall be present during test rolling and provide written certification to the City that the test passed or necessary corrections or recommendations if the test failed. 19.7 Prior to placement of the aggregate base, all manhole and valve box castings shall be removed or lowered below the bottom of the aggregate level. Following construction of the first bituminous lift the CONTRACTOR shall adjust all the castings .5" below the first lift. Immediately prior to the construction of the final bituminous lift, the CONTRACTOR shall adjust all castings to their final elevation of one (1) inch below the final surface. The bid items for "Adjust Manhole Castings" and "Adjust Valve Box Castings" shall be compensation for all adjustments required to establish the finished grades for the tops of these structures. Ramping of manholes for snow plow protection will not be allowed. 19.8 The aggregate base, curb and gutter, and bituminous base surface shall be constructed by the CONTRACTOR during the 2017 Construction Season, following completion of the utility WORK. The bituminous wear course shall be installed in the 2017 construction season, as directed by the OWNER. The CONTRACTOR shall be responsible for the necessary street cleaning prior to placement of final Bituminous Surface. The CONTRACTOR shall be aware that the OWNER or Companies working for the OWNER will be building houses and or performing other construction activities in the immediate area and that the streets may need additional cleaning. The CONTRACTOR will also have to coordinate their work with the other people working in the area. SP-8