Geotechnical Engineer (Rail)
15 hours ago
London
Role Purpose Lead the management and preparation of Geotechnical Field Reports-construction-stage documents that reliably capture ground-related realities versus design assumptions. The role ensures that actual ground conditions, excavation behaviour, groundwater observations, temporary works performance, unexpected hazards, methodology changes, instrumentation & monitoring data, and lessons learned are systematically recorded and analysed to inform future site investigation, design development, and risk management. Key Responsibilities 1. GFR Planning & Framework Define the GFR scope, structure, templates, and data standards per project phase and package. Establish a capture plan for observations and data (who/what/when/how), aligned with construction methods and programme milestones. Set traceability between design assumptions (e.g., GBR, interpretive reports, risk registers) and as-built evidence. 2. Data Capture & Validation Coordinate daily/weekly capture of site records: Excavation logs, face maps, probe/drill records, spoil logs. Groundwater levels/flows, inflow events, pumping rates. Temporary works behaviour: ground movements, strut loads, prop performance, shotcrete behaviour, lining convergence, etc. Instrumentation & monitoring (I&M): settlement/levelling, inclinometers, extensometers, piezometers, strain gauges, load cells, vibration, noise, dust (as applicable). Health, safety and environmental ground-related incidents/near misses. Method changes and non-conformance reports with root-cause notes. Validate data quality (completeness, timestamping, geo-referencing, calibration status). Maintain version control and metadata for all datasets and photos. 3. Technical Assessment & Reconciliation Compare observed ground behaviour against design assumptions and geotechnical categories. Interpret deviations (e.g., soil/rock type variability, fabric/structure, discontinuities, groundwater regime, gas, obstructions). Assess temporary works performance against design criteria and trigger/action levels. Identify emerging risks, opportunities, and required design/sequence mitigations. Propose targeted supplementary investigation or monitoring where uncertainty remains high. 4. GFR Production Prepare concise, evidence-led GFRs with: Executive summary & key findings. Sectioned narrative per activity (e.g., shafts, deep basements, tunnelling drives, piling, ground treatment). Tabulated datasets and annotated figures/photos. Cross-reference to design documents (GBR, geotechnical design reports, TW design) and I&M dashboards. Impacts on risk register and recommended actions (owner, priority, due date). Lessons learned and implications for future phases/sites. Manage review cycles (internal, contractor, designer, temporary works coordinator, client) and issue final controlled version