7−13vibratory compactor.
704.01 DESCRIPTION . This work consists of reconstructing existing catch basins and manholes
in accordance with the dimensions and details indicated on the Plans or as directed by the Engineer, all in accordance with these Specifications. 704.02 MATERIALS. Materials used in reconstructing existing drainage structures shall conform to the requirements of Subsection 702.02.1; Masonry Unit Construction , of these Specifications. 7−14 704.03 CONSTRUCTION METHODS. Manholes and catch basins shall be reconstructed in the following sequence: First the structures shall be thoroughly cleaned. Next, the cast iron frames and covers (or grates) are carefully removed and stockpiled on the site for subsequent reuse. Then, the tops of the structure immediately below the castings are removed. Subsequently, a portion of the vertical walls of the structure is removed to a depth sufficient for the reconstructed unit to make the transition to the lines, grades, and dimensions indicated on the Plans, or as directed by the Engineer. Any excavation required around the existing drainage structure shall be carried out in such manner as to cause the least disturbance to both the surrounding area and those portions of the existing structure that are to remain. Actual reconstruction of the drainage structures shall then commence in accordance with the details indicated on the Plans or as directed by the Engineer. Construction methods to be employed in this effort shall conform to the applicable requirements as set forth in Subsection
702.03.1 of these Specifications.
704.04 METHOD OF MEASUREMENT. "Reconstruct Catch Basin and Manhole/Corbel Cones"
will be measured by the number of the tops of such units actually reconstructed. "Reconstruct Catch Basin and Manhole/Vertical Walls" will be measured by the vertical height in linear feet of drainage structure walls actually reconstructed in accordance with the Plans and/or as directed by the Engineer. 704.05 BASIS OF PAYMENT. The accepted quantity of "Reconstruct Catch Basin and Manhole/Corbel Cones" will be paid for at the contract unit price per each such cone as listed in the Proposal. The accepted quantity of "Reconstruct Catch Basin and Manhole/Vertical Walls" will be paid for at the contract unit price per vertical linear foot as listed in the Proposal. The prices so-stated constitute full and complete compensation for all labor, materials and equipment for reconstructing drainage structures including removing, stockpiling and resetting castings, excavation and backfill, examining and cleaning the existing basin before and after reconstruction, the legal disposal of all surplus excavated and/or unsuitable materials, and all incidentals required to finish the work, complete and accepted by the Engineer. SECTION 705 RECONSTRUCT EXISTING TYPE "D" CATCH BASIN TO CATCH BASIN WITH GUTTER INLET
705.01 DESCRIPTION. This work consists of reconstructing existing Type "D" catch basins, either
square or round, into catch basins with gutter inlet conforming to the details and at the locations indicated on the Plans, or as directed by the Engineer, all in accordance with these Specifications. 705.02 MATERIALS. Materials used in reconstructing existing Type "D" catch basins shall conform to the requirements of Subsection 702.02.1; Masonry Unit Construction , of these Specifications.