Enayam Port

Tamil Research Institute
RAPID TECHNO-ECONOMIC FEASIBILITY REPORT FOR
DEVELOPMENT OF COLACHEL PORT AT TAMILNADU
FINAL REPORT
12. ESTIMATION OF PROJECT CAPITAL COST
12.1. PRINCIPLES FOR COST ESTIMATION
This cost estimates are calculated in order to have an input on the CAPEX of the project and to be able to calculate its
financial feasibility.
The following assumptions have been used:
• All costs are presented Rupees.
• Mobilization and demobilization costs are included in respective entities.
• Land costs have been obtained by requesting information from authorities and private companies. A deeper
analysis must be developed to confirm these costs.
• Engineering and project management is added as 7.5 % of the project costs.
• Besides, 15% of the project costs have been included for contingencies.
Costs and rates are based on similar projects developed by TYPSA and BCG, and marine projects of south India,
like Colachel fishing harbour, currently in progress. Some of the rates are “macro-rates”, which means a rough
estimate of a major unity.
Cost estimates have been broken down in the following sections:
Preliminaries
This section includes all the preliminary studies and surveys (e.g. bathymetric or topographic surveys previous to the
beginning of the construction), and some other works required before the main works begin. One important
preliminary work is the temporary berthing facility which will allow the construction of the breakwater by maritime
means.
Breakwaters
As explained earlier, both rubble mound and vertical breakwaters have been proposed following a cost saving
criteria. The following considerations have been assumed for rubble mound breakwaters:
• Rock layers porosity: 0.370
• Concrete cubes layer porosity: 0.470
• Accropods layers porosity: 0.491
Regarding vertical breakwaters, the following assumptions have been taken for caisson construction and installation:
• 20% of total volume of caisson is reinforced concrete and 80% is sand fill.
• Reinforcement steel rate is 100 kg/m 3 of concrete.
Berths
The cost estimates have been made considering the basic design of an open pile berthing structure, assuming a 9 m
x 9 m grid and mean length of 35 m for piles, with stone pitching as slope protection underneath the berth. Also, a
mean thickness of 1.0 m for reinforced concrete superstructure has been considered, with a reinforcement steel rate of
120 kg/m 3 .
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