Ordnance surveys by sector and project type

Roads, sewers, bridges, retaining walls and urban civil engineering combine changing intervention depths with traffic, utilities and constrained construction sequences. Investigation areas are divided by excavation, alignment, junction and construction section.

Depending on survey conditions, historical preliminary assessment, area surveys, downhole surveys or excavation supervision may be used. Documentation must identify the area actually investigated or treated afterwards.

Traffic management, retaining works, dewatering and phased handovers are considered in tendering and construction-phase planning. This keeps the area investigated before the next earthworks stage identifiable.

Track areas, railway embankments, cable routes, platforms, bridges and station areas need planning by chainage and section. Track possessions, operating installations, track superstructure and restricted access affect technical feasibility.

Survey and clearance services are coordinated with construction stage, working window and railway operations. Results remain assigned to the relevant line, chainage and intervention depth.

Cable crossings, points and switches, retaining structures and work near operational installations need particular attention. Interference and confined working areas may require additional investigation measures there.

Cables, pipelines, wind and solar parks, substations, grid connections and mast locations create linear and point interventions at the same time. Route sections, crossings, joints, boreholes and assembly areas are assessed separately.

Historical and technical assessment must match installation depth, working width and construction method. Consistent chainage references in the documentation are essential for long corridors.

Access routes, crane standing areas, cable-pulling chambers and temporary site facilities are also considered where relevant ground interventions or load transfers are planned.

Existing foundations, utility networks, steel structures, fill, production operations and previous uses can considerably affect measurement and access. Extensions, halls, tank areas and logistics areas therefore need a phased approach.

Permissions to work, shutdowns, working areas and documentation interfaces are coordinated with the operator, designers and construction team.

During refurbishment or demolition, the current construction stage is continually considered. Newly accessible areas may need different investigations from areas previously built over or affected by installations.

Schools, nurseries, administrative buildings, sports facilities, road space and urban-development sites require transparent tender documents and clear responsibilities.

Ordnance assessment is described so that the authority, design consultancy, site management and contractors use the same basis for area, depth and evidence.

Early clarification supports budgeting, scheduling and formal tendering. Later changes to the construction area are checked against the documented investigation scope.

New developments, neighbourhoods and infill projects combine land development, roads and utility infrastructure, ground investigation and subsequent individual construction projects. Investigation status must remain understandable across several phases.

Phasing and consistent data handover help developers, local authorities, utility providers and later project owners access the same status of work.

For individual plots, it must remain clear which conclusions from the wider infrastructure development can be used and which structure-specific additions are still needed before foundations or excavation.

Energy, water, transport and communications facilities combine high availability requirements with restricted access and sensitive operating processes. Protective areas, system isolation and reporting routes must be established early.

The service is coordinated with the installation area, deep intervention, operating state and required evidence without unnecessarily disrupting ongoing operations.

Shutdown risks and safety zones are considered when choosing methods and scheduling. Deviations from the planned working window trigger renewed coordination with operational managers.

Percussion core sampling, groundwater monitoring wells, sampling, remediation and geotechnical investigations target specific ground volumes. Ordnance, contaminated-land and geotechnical questions remain technically separate but are coordinated in the work sequence.

Borehole positions, sampling areas and protective arrangements are planned so that every discipline receives reliable results that can be assigned unambiguously.

The investigation sequence and release points are agreed so that preliminary ordnance checks are complete before the respective drilling, sampling or remediation step.

Project insurers, financing partners and risk managers need traceable information on suspected ordnance, work scope, limitations and outstanding measures. General safety assurances do not replace spatially defined documentation.

The project file is structured so that investigation status, residual uncertainty, plan changes and follow-up decisions can be communicated transparently.

For risk assessment, the sources available, investigated areas and methodological limits are shown separately. Technical measures and remaining project assumptions can thereby be distinguished objectively.