Using this runoff data, the storm water drains should be designed following the aspects of design as mentioned in CPHEEO manual Chapters 5, 6 & 7. Reduction in storm runoff by constructing retention/detention ponds / Rooftop rainwater harvesting etc. as given in Chapter 9 and Chapter 10 should also be accounted for while designing the drainage system. 3.Other Considerations 1.Permissions and Clearances 2.Environmental Consideration : The environmental impact assessment (EIA) should be carried out in accordance with the procedures prescribed by Government of India under Environment (Protection) Rule 2006 and 2009 wherever applicable. 4. Financing Project implementation involves Capital as well as O & M cost.
Capital cost includes all initial costs such as civil construction, cost of drains appurtenances, pumping machineries installation and erection costs, opportunity cost (land cost in case of government land), engineering design and supervision charges, interest charges on loan if taken during the construction period.
Annual Operating costs after the project is commissioned shall include the summation of the direct operating cost and fixed costs like amortization and interest on capital borrowings, direct operation and maintenance costs
5.Citizen Awarenes Citizen awareness is the growing recognized mechanism to dissuade people from the habit of indiscriminate littering and dumping of debris and solid waste either on open ground or nearby rivers/ streams/lakes/drains. This is dealt in detail in Part C of CPHEEO manual on Storm Water Drainage Systems
6.Institutional Arrangement and Capacity Building : institutional strengthening and internal capacity building so that the efforts made can be sustained over a period of time and the system put in place can be well managed. Institutional strengthening can be done by adequately decentralizing the administration, delegating adequate powers at the decentralized level, inducting professionals into the administration, and providing adequate training to the existing staff. These are dealt with in detail in Part C of CPHEEO Manual.
7.Service Level Benchmark While planning a project, efforts should be made to perform as per Service Level Benchmark notified by Ministry of Housing and Urban Affairs, (MoHUA) Govt. of India
8.City Drainage Master Plan : Drainage Master Plan provides a broader framework of the system such as broad layout plan and other system components, outfall locations, rainfall characteristics enunciating the design criteria, outline and brief description of system components. The drainage master plan should be prepared in consonance with the City Master Plan, keeping in view the land use plan of the city.
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Urban Infrastructure and Network Study notes for M. plan Sem-III
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