Interactive Bridge Toolkit
Step 4: Data Collection
Step 4: Data Collection
Data shall be collected in the form of mapping, field survey, standards, unit costs etc.
Table 2.3 Typical Data Requirements
| Main Data Groups |
Typical Data Requirements |
| Project affected area characteristics |
Base map – showing settlements, roads, buildings, irrigation, utilities, administrative boundaries Demographic data – population characteristics Economic data – agriculture, industries, employment Environmental map – natural resources, cultural heritage |
| Demand and capacity characteristics |
Historic demand related to the proposed project Forecast of demand Level of service policy and criteria |
| Economic indicators in project affected area |
Population forecast Economic activity measures and forecasts |
| Engineering data at the project site |
Topographical map Land survey as needed Geology and hydrology Soil conditions Sources of construction materials |
| Preliminary engineering design and cost estimates |
Design criteria and standards Unit prices of materials and labour Construction norms |
| Economic and financial analysis |
Taxes, duties, shadow prices of project inputs and economic production in project area Discount rate Income levels |