Sewerage - Nagar Nigam Raipur

11.0 Operation and Maintenance .......................................................................90
11.1 Necessity of Maintenance ..........................................................................90
11.2 O&M for the project ....................................................................................90
11.3 Road Restoration .......................................................................................91
12.0 Project Management ..................................................................................92
12.1 Construction ...............................................................................................92
12.1.1 Excavation ..............................................................................................................93
12.1.2 Installation of Sewer Pipes......................................................................................93
12.1.3 Bedding...................................................................................................................93
12.1.4 Handling of Pipes....................................................................................................93
12.1.5 Jointing and Cutting ................................................................................................94
12.1.6 Placing and Compaction of Fill and Backfill...........................................................94
12.1.7 Disposal of Surplus Material ...................................................................................94
12.2 Prefab Reinforced Concrete Manholes ......................................................95
12.3 Important Aspects During Construction......................................................95
12.4 Standards for Construction.......................................................................103
12.5 Testing .....................................................................................................104
12.5.1 Tests on Completion.............................................................................................104
12.6 Project Management: Construction Stage................................................104
12.6.1 Production of Pipes / Manholes at Site.................................................................105
12.6.2 Contractor to Produce Designs.............................................................................105
12.6.3 Software for Project Scheduling and Monitoring ..................................................105
12.7 Project Implementation.............................................................................105
12.7.1 Implementation Schedule .....................................................................................106
13.0 Cost Estimates .........................................................................................111
13.1 Basis of Cost Estimate .............................................................................111
13.2 Price Escalation........................................................................................112
13.3 Detailed Cost Estimate.............................................................................112
13.4 Summary of Costs....................................................................................115
13.5 Cash Flow Statement ...............................................................................115
14.0 Financial Analysis.....................................................................................117
14.1 Financial Management .............................................................................117
14.1.1 Tariff Charges .......................................................................................................117
14.1.2 Public-Private-Partnership ....................................................................................117
14.2 Conclusions..............................................................................................118
15.0 Conclusions and Recommendations........................................................119
15.1 Conclusions..............................................................................................119
15.2 Recommendations ...................................................................................120
ANNEXURES
1. Ward wise area of Raipur Municipal Corporation