Responsibilities
1. Establish and Maintain Survey Control Network
- Create and verify horizontal and vertical control points across the entire project area.
- Establish permanent benchmarks for all critical structures (dam, tunnels, pressure shaft, caverns, powerhouse).
- Maintain accuracy and stability of control stations throughout the project duration.

2. Setting-Out for All Civil, Hydro-Mechanical & EM Works
- Provide accurate setting-out for:
- Dam and spillway structures
- Intake, HRT, TRT, adits
- Surge shaft, pressure shaft/tunnel
- Powerhouse and transformer cavern
- Penstock alignment
- Ensure construction matches the design coordinates, alignments, levels and profiles.

3. Underground Works Alignment & Monitoring
- Conduct:
- Tunnel alignment checks
- Deformation monitoring (convergence measurements)
- Overbreak–underbreak evaluation
- Crown, wall, and invert position verification
- Ensure breakthrough of tunnels from multiple headings occurs within tolerance.

4. Support for Hydro-Mechanical & EM Equipment Installation
- Provide accurate alignment for:
- Penstocks,



steel liners, bifurcations
- Turbine runner, draft tube, spiral case
- Generator stator, rotor centreline
- EOT cranes and monorails
- Maintain high precision as required by OEMs.

5. Topographic & As-Built Surveys
- Conduct detailed surveys for:
- Excavation quantities
- Valley, river, and hill terrains
- Underground cavity mapping
- Penstock and pipeline routing
- Prepare as-built drawings for all completed works.

6. Quantity & Progress Verification
- Measure:
- Earthwork volumes
- Rock excavation
- Backfilling
- Concrete quantities
- Support billing verification for contractors and subcontractors.

7. Geodetic and Structural Monitoring
- Monitor movement/settlement of:
- Dam body
- Powerhouse
- Pressure shaft
- Underground tunnels
- Detect and flag any unusual displacement to engineering or safety teams.

8. Calibration & Instrument Management
- Ensure all survey instruments are:
- Calibr

📌 Surveyor (Gandikota)
🏢 Adani
📍 Gandikota