without extra compensation, except as herein provided. Whenever excavation is made for installing sewer pipe across private property, the topsoil disturbed by excavation operations shall be replaced as nearly as possible in its original position. Bedding, placing, and backfilling of storm sewers within roadway limits shall be as provided in Section 530, using the type and strength of pipe specified on the plans.
533.04 Method of Measurement.
Storm sewer pipe, excavation, and foundation backfill will each be measured in the same manner as specified in Article 530.04.
533.05 Basis of Payment.
534.01 Description.
This Section shall cover the work of cleaning existing drainage structures including all types of pipes, reinforced box culverts, underdrain outlets and other drainage structures shown on the plans.
534.02 Materials.
There will be no material requirements other than the hardware cloth for the rodent screens on underdrain outlets shown on the plans.
534.03 Construction Requirements.
Pipes, box culverts, catch basins, manholes, drop inlets, pipe underdrain outlets and other drainage structures shown on the plans shall be cleaned of all dirt, leaves, limbs, roots, grass, sludge, grease, trash and other debris. Obstructions within a 5 foot distance outside of the inlet and outlet ends of the drainage structures shall also be removed as a part of cleaning the structures. All materials removed during cleaning shall be disposed off of the right-of-way in accordance with the requirements for disposal given in Section 206. The Contractor shall implement the "Best Management Practices" (BMP's) noted in Section 107 for the control of sediment that will be removed during the cleaning. The Contractor shall perform the work so that there is always adequate drainage of the roadway at all times. The Contractor shall repair all damage to drainage structures that result from cleaning methods and procedures that are used without consideration for the protection of the drainage system. The Engineer will not allow the use of any cleaning method or equipment that may result in damage to the structure or damage to the areas adjacent to the structure. Rodent screens shall be fabricated and installed as shown on the plans or as directed by the Engineer.
534.04 Method of Measurement.
The cleaning of existing pipes, box culverts, catch basins, manholes, drop inlets, pipe underdrain outlets and other drainage structures will be measured per each drainage structure or per foot along the length of the drainage structure. Measurement will be made only once for each item cleaned unless severe conditions result in the need for repeated cleaning and the repeated cleaning is not caused by the activities of the Contractor. All recleaning due to the activities of the Contractor shall be done at no additional cost to the Department. Pipes, culverts and other drainage structures measured for cleaning along the length of the structure will be classified for payment based on the horizontal opening of the drainage structure. The diameter of round pipe and the span of "span and rise" pipe will be shown as a horizontal opening classification for payment. Each pipe will be measured separately for payment regardless of the number of pipes adjacent to each other at one location. The horizontal opening of a culvert will also be shown as a classification for payment. The horizontal opening of a culvert shall be the horizontal opening in a single barrel culvert or the sum of the horizontal openings in a multiple barrel culvert. Two classifications of horizontal opening will be given for the purpose of measurement for payment. The first classification of horizontal opening shall be structures with an opening less than or equal to 48 inches. The second classification of horizontal opening shall be structures with an opening greater than 48 inches. If separate pay items are not shown on the plans for cleaning catch basins, manholes, and other appurtenances to the structures measured by linear feet (pipes and culverts), the cleaning of these appurtenances will be measured for payment by including the length through the appurtenances in the total number of linear feet of the attached drainage structure. The length through an appurtenance will be added to the length of the largest structure connected to the appurtenance.
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