STORM DRAINAGE - 1 DETAILED SPECIFICATIONS - STORM DRAINAGE

Transcription

1 STORM DRAINAGE - 1 DETAILED SPECIFICATIONS - STORM DRAINAGE Scope General Location and Grade of Sewers Order of Work Existing Water, Sanitary Sewer, Gas, and Other Utility Lines Storm Sewer Pipe Standard Storm Sewer Manhole Storm Sewer Junction Man Catch Basins Junction Box Adjust Existing Manholes Box Culverts and Headwalls Riprap Ditches Roadway Crossing Cut-In

2 STORM DRAINAGE - 2 DETAILED SPECIFICATIONS - STORM DRAINAGE SCOPE The work covered by this section of the specifications consists of furnishing all labor, equipment, and material and in performing all operations necessary for the construction of new storm sewers, catch basins, manholes, and appurtenances, complete to the grades and the locations shown on the drawings or as specified. Existing storm drainage facilities shall be connected to the new storm lines where indicated on the drawings or directed by the City Engineer. The various types of catch basins and other drainage structures proposed to be constructed shall be as specified. All ends of sewer and drain lines that are pending future connection shall be temporarily plugged, and their end method of construction shall conform to the requirements of the drawings and applicable divisions of the specifications GENERAL Pipe for storm sewers and drains from catch basins shall be constructed of the materials as specified herein, as shown on the drawings, or as directed by the City Engineer. Pipe shall be laid true to the grade shown on the drawings or as directed by the City Engineer. Each section of the pipe shall rest upon the pipe bed for the full length of its barrel, with recesses excavated to accommodate bells and joints. Any pipe which has its grade or joint disturbed after laying shall be taken up and relaid. Under no circumstances shall pipe be laid in water, and no pipe shall be laid when conditions or the weather are unsuitable for such work. Any section of pipe already laid which is found to be defective or damaged shall be taken up and relaid or replaced as directed by the City Engineer without additional cost to the Owner LOCATION AND GRADE OF SEWERS The line and grade of the sewer, as well as the location of manholes, inlets, and all other appurtenances, shall be as shown on the plans or as directed by the City Engineer. The grade line as given on the profiles indicates the grade of the invert of the sewer pipe. All necessary lines and grades shall be furnished by the Contractor and checked by the City Engineer. The Contractor will also furnish cut sheets. In the event of failure of the Contractor to protect stakes checked by the City Engineer, the expense of rechecking such stakes will be charged to the Contractor, and this amount will be deducted from the amount due on his payment.

3 STORM DRAINAGE ORDER OF WORK The City Engineer reserves the right to indicate which sewer lines will receive priority in construction. In general, however, the work will be from the lower end of the sewer towards the upper end of the sewer. All work shall be scheduled in such a manner that the installation of storm sewers will be completed prior to any roadway construction or resurfacing. When a roadway is closed to traffic, the Contractor shall arrange to complete the installation of all storm sewers and appurtenances before the roadway is surfaced or opened to traffic. A work schedule showing the program of construction the Contractor intends to follow shall be submitted to the City Engineer for approval EXISTING WATER, SANITARY SEWER, GAS, AND OTHER UTILITY LINES The Contractor's attention is called to the fact that the location of all utility lines, telephone lines, and power lines where shown on the plans are not guaranteed nor is any assurance granted that all locations are known or indicated correctly. It is, therefore, the Contractor's responsibility to locate and protect all lines which may be encountered. In case it is necessary to remove or relocate utility lines or if utility lines are accidentally broken by the Contractor's operations, then it shall be the Contractor's responsibility, without additional compensation, to have such lines restored to a state of repair existing prior to the interruption. Special arrangements must be made between the Contractor and the officials of the utility companies for the removal or crossing of their lines. Wherever it is necessary for the Contractor to do work of a replacement nature, he shall use new materials of same quality, or as directed by the City Engineer. Workmanship shall be of the best, and the interruption shall be of minimum duration and, if possible, at time of least probable use by the public. Use the Call Candy number for all projects STORM SEWER PIPE All pipe for storm sewer construction shall be reinforced concrete pipe and shall be furnished, installed, and tested in accordance with Florida D.O.T. Standard Specifications for Road and Bridge Construction, latest edition STANDARD STORM SEWER MANHOLE Storm sewer manholes shall be furnished, installed, and tested in accordance with Florida D.O.T. Standard Specifications for Road and Bridge Construction, latest edition STORM SEWER JUNCTION MANHOLE Storm sewer junction manholes shall be furnished, installed, and tested in accordance with Florida D.O.T. Standard Specifications for Road and Bridge Construction, latest edition.

4 2-7-9 CATCH BASINS STORM DRAINAGE - 4 Catch basins shall be furnished, installed, and tested in accordance with Florida D.O.T. Standard Specifications for Road and Bridge Construction, latest edition JUNCTION BOX Junction boxes shall be furnished, installed, and tested in accordance with Florida D.O.T. Standard Specifications for Road and Bridge Construction, latest edition ADJUST EXISTING MANHOLES Certain existing manholes, as shown on the drawings or as directed, shall be adjusted by the Contractor to the top elevation or grade as shown on the drawings, or as directed by the City Engineer. Adjustment shall normally be limited to one foot, unless otherwise approved by the City Engineer BOX CULVERTS AND HEADWALLS RIPRAP DITCHES Box culverts and headwalls shall be furnished, installed, and tested in accordance with Florida D.O.T. Standard Specifications for Road and Bridge Construction, latest edition. Riprap shall be furnished, installed, and tested in accordance with Florida D.O.T. Standard Specifications for Road and Bridge Construction, latest edition Excavation for ditches shall be to the lines, grades, and cross section as shown on the drawings. Muck, rock, and other soils unsatisfactory for use in embankments shall be disposed of by the Contractor as directed by the City Engineer ROADWAY CROSSING Roadway crossing shall be installed in accordance with the requirements of the highway department having jurisdiction. The Streets Division will govern the method and materials of construction. The Owner shall obtain the necessary permits to enter into said roadway, and the Contractor will be responsible for any and all expense the roadway department incurs in protecting its roadway while pipes are being installed thereunder, as well as being held responsible for any damage to the roadway itself. The Contractor shall comply with the governing roadway department specifications regarding proper bracing, sheeting, shoring, and other necessary protection of the roadway and traffic during the construction operation.

5 STORM DRAINAGE CUT-IN The cut-in into the existing storm manhole and connection shall be made in a thorough and workmanlike manner using proper specials and fittings to suit the actual conditions. All connections to existing City utilities will be done under the direction of the City Engineer or his agent.