Project /Assignment Name: Preparation of Detailed Project Reports for Sewerage System for Banka Town in Bihar- “Package – 11- Bhagalpur” with BUIDCO Sewerage System: Banka
Location within the Country: Banka, Bihar, India
Name of Client: IL&FS Infrastructure Development Corporation, Bihar Urban Infrastructure Development Corporation Ltd.
| Status of Project: Completed | Name of senior professional staff of your firm involved and functions performed:
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Narrative description of Project:
Government of Bihar through Bihar Urban Infrastructure Development Corporation Ltd. (BUIDCo) has mandated IL&FS IDC for preparation of Feasibility report and DPR along with Bid documents for providing basic urban infrastructure services with special reference to Water supply, Sewerage System , Storm Water system in Five towns for the design year 2046 with the base year being 2016 and midyear 2031, in order to shift the town in the fast lane towards development. These Schemes will be funded by under JNNURM.
Scope of Services
Design & Engineering for DPR
Reviewing existing maps, studies, and other related documentation to obtain a better understanding of the town’s Storm Water Drainage system prior to the start of fieldwork.
Understanding of the existing storm drainage system and identifying the main issues including severity and location of inundation, pollution and other environmental issues of the drains, absence of drainage system or lack of connectivity in conveyance, physical constraints to flow in the drains viz. encroachments into Storm Water Drainage channels, solid waste dumping, natural and man-made obstructions, including pipe culverts and low level causeways, road and rail over bridges, flyovers, canals, permanent ways etc.
Identifying appropriate planning and design parameters based on the project area situation; mainly, the appropriate design frequencies of the storms (based on degree of protection needed vs. permitted flooding, based on type of area – residential, commercial, business districts etc.), the run-off coefficients, proposed method of computation, proposed channel shapes etc.,
Utilizing proven and readily available computer dynamic modeling software i.e. sewer cad and water cad, for storm water excel based software (that allows for visually depicting the design changes and their impact), carry out analysis of existing situation of storm water drains to identify deficiencies and develop alternative strategies and options for expansion / augmentation of the existing system to address system deficiencies
Where there is interface between sewerage system and storm water drainage, proposing appropriate plans to remove / reduce the interface; and/or reduce the impact.
Based on this analysis, identify the most appropriate alternatives that may include drain improvements, augmentation/extension, flood detention measures, improvements in flood handling equipment/structures, strengthening of existing structures etc. The proposed alternative (which consists various sub-alternatives on major drains / decisions on flood water retention / pumping etc.) shall be the economic one amongst the selected alternatives, looking from capital / O&M costs angle; in addition to meeting the planning and design requirements mentioned above.
Suggesting suitable materials for construction with cost benefit analysis discussing the feasibility of using pre cast structures and providing structural designs and other design and details as appropriate