Project pathway
The quickest route to the right decision.
Explosive ordnance assessment in Velbert: prepare foundations and excavation support
For explosive ordnance assessment of foundations or excavation support, the excavation outline alone is not always sufficient. The individual intervention points, support lines, depths and proposed construction method are also needed. FONTANA-EOD supports commissioned investigation planning in Velbert and checks how existing findings and necessary investigations relate to these works.
Identify planned positions clearly on the site plan.
State the type of groundworks proposed.
Relate the investigation to the respective structural elements.
Assess the construction project
The actual intervention points determine the specialist task
Foundations and excavation support may extend beyond the outline of the eventual excavation. For your project in Velbert, we compare positions, lines, depths and construction methods with existing explosive ordnance documents. Outstanding or changed interventions remain identifiable so that further investigation matches the current design.
Project site
Connect the site with the specific construction task
Distinguish responsibility in Velbert from the specific planning case
The City of Velbert places explosive ordnance case management within the Ordnungsamt. Development plan 605.02 on Posener Straße contains statements about groundworks involving mechanical loading for that project. Your project requires its own documents and local requirements. The older planning case does not establish a blanket assessment of all properties in Velbert.
Provide the address, cadastral parcel and current site plan to identify the property. Give the individual structural elements and their intervention points unambiguous labels. For multiple construction phases, it remains clear which report covers which positions. The planning case on Posener Straße is treated as a separate, locally limited matter; the requirements of the new project are coordinated using its documents. For a property in another municipality, its procedure is determined separately. Further project locations are shown in the regional overview.
The overview of the Düsseldorf administrative district provides further local information for the regional context of your construction project.
Local context
Compare local guidance with the specific construction method
A specific Velbert planning case concerning construction methods
The project-specific development plan 605.02 on Posener Straße from 2017 contains guidance on groundworks involving considerable mechanical loading, including piling and pile foundations. It mentions safety detection surveys and utility records. The guidance concerns that planning procedure. It does not establish ordnance contamination on other properties in Velbert.
In the planning case mentioned, note 3 also requires access permissions and a declaration with plans of existing utilities before the measures described. Your own project is prepared using its actual applicable requirements. Available utility records are brought together with the planned intervention points. Missing information and unclear positions are clarified with those responsible before the affected works are carried out.
The historical study of Langenberg published by the City of Velbert describes crashes of Allied bombers in 1943 and 1944. These location details are compared with contemporary street names and present-day site boundaries. Suitable historical aerial photographs, building records and other documents are researched and assessed for a specific technical question. The historical information is related to the actual intended construction area. The investigation needed today follows from that relationship, the existing findings and planned groundworks.
Coordinate your own project with the local authority
Check your project’s own requirements and existing findings. The city places explosive ordnance case management within the Ordnungsamt. Compile the specific plans and previous responses for coordination. It must be clear whether the planned foundations or excavation support are covered by the existing investigation scope.
For foundations and excavation support, historical indications are considered together with the current plan appendices and intervention depths. Earlier development, documented reconstruction, demolition, fill or other terrain changes may describe different points in time. These are distinguished clearly for the affected area. A neighbouring investigation area does not automatically cover a new borehole point or additional lateral support elements. Changes to construction areas are passed to the responsible participants before execution. The outstanding question remains linked to the structural element actually affected.
Requirements
Clarify technical requirements and responsibilities within the project
Relate requirements to the specialist task
For the commissioned work, the applicable technical requirements, permits, competence and responsibilities are clarified. The actual scope of work is what matters. Tasks and interfaces are described for the project and checked against the required authorisations.
Link occupational safety to the construction sequence
The risk assessment, work areas and communication arrangements must suit the planned activities. Specialist explosive ordnance work is coordinated with the other construction activities. Site organisation, traffic safety and other technical assessments retain their own responsible parties. Joint coordination assigns the relevant specialist work and responsibilities to the affected construction sections.
Use technical findings correctly
A measurement anomaly first requires specialist assessment; its appearance alone does not identify it as explosive ordnance. If an object is genuinely suspected to be ordnance, the prescribed reporting procedures and the measures set by the responsible authorities apply. Investigation reports specify the work completed and its limitations, so that results are not extended to unexamined areas or later design changes.
In Velbert, the Ordnungsamt is the local interface for hazard prevention concerning explosive ordnance. Technical support is provided by the state explosive ordnance disposal service (KBD) at the Düsseldorf district government, whose area of responsibility covers the Düsseldorf and Cologne administrative districts.
The City of Velbert places explosive ordnance case management within the Ordnungsamt. The development plan 605.02 Posener Straße from 2017 contains the guidance on groundworks involving mechanical loading, limited to that planning procedure. The KampfmittelVO NRW governs state tasks and the prerequisites for certain private activities.
The principles of clearance planning connect the investigation with its subsequent treatment. The geophysics guidance in the BFR KMR supports technical method selection. The documentation requirements relate results to the areas addressed. The North Rhine-Westphalia Ministry of the Interior explains state explosive ordnance disposal.
The BFR KMR describe specialist work on federal properties. The locally applicable requirements and responsibilities are determined separately for the project in Velbert.
The permit, qualifications and responsibilities for the specific activity are assessed under the Explosives Act and the First Ordinance to the Explosives Act. The risk assessment under Section 5 of the Occupational Safety and Health Act relates to the planned activities. The DGUV Information 201-027 addresses preventive investigation and clearance of conventional explosive ordnance and defines its scope. The references it explains to DGUV Regel 113-003 concern specific activities involving explosives; they are not applied indiscriminately to every construction investigation.
For private activities in North Rhine-Westphalia, the specific requirements of the exceptions under the KampfmittelVO and the official guidance must be observed. The private contract connects technical suitability with the scope provided for in law. The authority's state of knowledge and the permissions required for the activity are checked before an agreement.
Working together
Distinguish the tasks of client, designers and specialist contractor
Client and operator
The client describes the project and provides the available project records. The operator adds requirements for use, access and timing. A coordinating contact brings the parties together; individual tasks remain assigned to the named parties. Before commissioning, it is clearly recorded what information is missing, who will obtain it and what decision the result is intended to prepare.
Planning and construction management
The specialist designers describe areas, depths, construction methods and changes. Site management coordinates the planned sequence with the construction contractors and agreed specialist works. Results are assigned to the respective intervention. A technical plan change is communicated early enough for its effect on the survey task to be assessed before construction. Organisational construction stage boundaries remain distinguishable from technical survey boundaries.
Specialist company and competent bodies
The private explosive ordnance specialist carries out the agreed investigation and documentation work. Requirements and decisions of public authorities are addressed with the responsible bodies. The documents needed for a particular procedure depend on the location and project. The technical report describes the work carried out, including its documented area, depth and scope. Decisions reserved for public authorities are made by those authorities.
Velbert’s Ordnungsamt is the local interface for hazard prevention concerning explosive ordnance and involvement of the state KBD of the Düsseldorf district government. Permissible private specialist work is agreed with its specific investigation and documentation scope. The respective tasks are identified together with the findings needed for foundations, excavation support and other groundworks. The design team provides the current design and known changes. For project locations outside Velbert, the responsible municipality is determined from the actual address. Any need for ordnance recovery is coordinated with the permissible task and the competent authorities.
Investigation task
Which specialist task comes next?
Relate existing findings to the new task
Read earlier assessments and reports with their maps and limitations. Compare the planned interventions with the actual scope of findings. A general indication covering a broad area and a result for a single point have different meanings. The evidence still needed is determined from the specific position, depth and construction method.
Assess historical documentsAssess technical suitability before commissioning
Access, utilities, structures and other installations may influence execution and the ability to assess results. The method is therefore selected for the specific task. A foundation type does not imply a particular instrument or blanket result. Official determinations and NRW’s conditions for private work are also checked before an agreement.
Compare investigation methodsProject types
Link structural elements and the investigation task clearly
Keep point labels consistent across the documents
Use the same unambiguous label for a structural element in the construction plan, commission and results report. This keeps the relationship traceable after a project handover. If positions change or numbers are reassigned, identify this. A similar label alone does not confirm that the same location was investigated.
Document findings and their limitations
Show lines and additional interventions in full
Excavation support may affect areas different from the building edge or excavation outline. Show the lines actually proposed and any additional interventions. This includes temporary works where relevant to the task. The investigation scope is established using this information, not inferred from the general project name.
Understand downhole surveys
State the construction method and elevation reference together
The position of a structural element alone does not fully describe the intervention. Add its depth, reference elevation and proposed construction method. Resolve differing information in the specialist plans before further assessment. This allows the specific task to be assessed without relating a depth to an incorrect starting elevation.
Specialist services and investigation tasksPreparation
Prepare the scope and commission together
Before commissioning, foundation positions, excavation support lines and other ground interventions are compared with the existing explosive ordnance documents. For the project in Velbert, the findings still needed, the status of the official procedure and the permissible specialist task are established.
Establish what needs to be known before commissioning the work
For the specialist commission in Velbert, the proposed foundation positions and excavation support lines are described as individual interventions. The eventual building footprint alone is insufficient. State the positions, depths and construction methods of the structural elements concerned and relate existing findings to them. This determines whether documents must first be reviewed, additional ground volumes investigated or previously assessed findings addressed further. Provisional positions remain marked. The agreed specialist works and results documents relate to an identified plan version and the execution decision they are intended to prepare.
Define the specialist taskCoordinate preparatory work with the investigation
For investigation of the planned points and lines, identify the accessible starting positions and measurement areas to be kept clear. Existing utility information and necessary coordination with other trades belong in preparation. The suitable method determines which measurement conditions and preparatory works are needed. If access for investigation first requires breaking up a surface or other groundworks, those works and their prerequisites belong in the technical preparation. They are agreed beforehand with the responsible participants. Changes to the surface and additional interventions are not made on personal initiative merely to enable a measurement.
Clarify preparatory work in the programmeAgree a clear scope and schedule
Agree the scope using a valid list of structural elements and positions. If only some proposed interventions are already established or accessible, consider this before commissioning. Construction scheduling depends on when the assessed results are needed for the respective positions; assessment and handover are additional to fieldwork. Dates and effort are coordinated with access, documents and outstanding requirements. A position subsequently moved or a changed construction method is compared with the agreed plan version before investigation or execution is based on it.
Discuss the scope and scheduleTasks at the site
Information needed from structural design and construction planning
01
Clearly labelled intervention points
Mark and label the individual positions of planned point interventions. Use the same labels in the drawing, investigation commission and results report. Positions not yet established must remain identifiable as open.
02
Excavation support lines and other working areas
Draw the planned excavation support and other associated interventions. Its course may differ from the eventual building edge. Groundworks needed temporarily during construction also belong in the description of the area to be investigated.
03
Planned depth with an elevation reference
Add the intervention depths and state their reference point. Resolve differing elevation information in the structural and site plans before investigation planning. The same depth describes different areas when measured from different starting elevations.
04
Construction method and current plan version
State the proposed construction method and valid plan version. If positions are moved or a different method chosen, pass on the change for technical review. A report relating to the earlier plan does not automatically confirm the new execution.
Project documents
Documents that establish the next step
Identify the relevant set of construction plans
Have the site plan, structural element list and depth information ready at their corresponding revision status. Outstanding or provisional positions remain identifiable. A later change is linked to the previous version. Specialist planning must be able to trace the specific execution on which the agreed commission is based.
For consistent identification, the site plan, structural element list and depth information are handed over as one corresponding set. Information from structural design, excavation support design and construction sequencing is checked for contradictions. Missing or provisional information remains identifiable. Where elevation references differ, clarify which investigation level or ground surface the depth is measured from. If the working level changes through planned excavation or fill, show this explicitly. The subsequent report makes clear which specific version was actually addressed.
Relate each result to the area investigated
The report shows which positions, lines or areas were actually investigated. Locations not investigated and limitations are explicitly identified. A result concerning one structural element is not extended to the remaining foundations. Site management can therefore identify the basis available for each activity.
The results handover distinguishes completed and outstanding positions. Relevant method limitations and areas that cannot be assessed are shown in the report and corresponding plan. Site management receives the complete documents with the relevant construction version. Before the next step, check which structural elements the results cover and which additions are still needed. Additional interventions or those at different depths are related separately. A brief overview refers to the complete evidence and already makes essential open issues apparent. Following clearance work, the clearance record with its scope, results and remaining limitations is related to the positions, lines or areas actually treated on the relevant site plan.
Construction sequence
Coordinate investigation and construction sections
Before establishing investigation points
Provide the current foundation and excavation support plans with unambiguous labels. State positions not yet finalised and known obstacles. Specialist planning relates the findings needed to the actual construction task. A provisional drawing is not silently treated as the final construction version.
After a position or depth changes
Mark the change on the current plan and communicate it before execution. Compare the existing result with the new position and intervention. Whether further work is necessary follows from this technical comparison. An earlier finding retains its documented scope.
Method selection
Select methods according to the task and survey conditions
Historical records and aerial photographs
Historical aerial photographs and earlier records are related to the construction area where the individual foundation or excavation support interventions are planned. Their availability, information value and spatial limits determine which historical indications can be assessed. The absence of a visible indication is not evidence of a technical investigation of the planned positions. Method planning considers the assessment, other findings and the current design together. Historical assessment examines earlier images; present-day subsurface measurement and findings for a particular intervention depth remain distinct. If the plan changes, the affected area is related again.
Understand aerial photograph assessmentMagnetometric survey
Magnetic methods detect magnetic anomalies. Their suitability for a planned foundation point or excavation support line is assessed using the expected objects, ground conditions and required investigation area. Utilities, fences and metal components can affect measurement and assessment. The conditions are therefore related to the specific position. Signal strength alone does not identify an object as explosive ordnance. The specialist commission combines measurement, assessment and necessary further clarification so that subsequent site management can identify which findings actually apply to which intervention.
Understand the scope of magnetometryElectromagnetic methods
For electromagnetic methods, suitability for metallic target objects and the existing site conditions is justified on technical grounds. The plan describes which ground volume is to be investigated for each structural element and where measurement areas are accessible. Interfering installations and the required findings are considered in selection; an available instrument is not sufficient justification. Results are provided with a location reference and information on investigation conditions. Whether another method is needed follows from the assessment and the question still open for the identified foundation or excavation support intervention.
Understand electromagnetic surveyingGround-penetrating radar
Under suitable conditions, ground-penetrating radar can show subsurface structures and reflections. If an earlier radar report is submitted for foundation planning, its purpose and the areas actually covered are checked. A report on built structures or utilities is not automatically evidence concerning explosive ordnance. Ground conditions, moisture and installations influence the ability to assess results. Anomalous reflections require specialist interpretation; an unremarkable display does not confirm any arbitrary depth. The findings and their limitations are compared with the proposed structural element and related traceably in the commission and results documents.
GPR and limitationsDeep-ground and downhole surveys
For deep foundations or excavation support interventions, check which ground volume a surface investigation can actually cover and whether a deep-ground or downhole method is needed. Planning combines position, starting elevation, depth and borehole arrangement with the existing utility records. Provision of investigation access is also prepared on technical grounds. A general grid or blanket depth figure does not replace task-specific design. The result remains clear about which method was carried out at which location and the area to which its findings apply. An investigated individual point is not presented as complete evidence for an adjacent excavation support line.
Prepare deep interventionsSurvey during construction
If the ground volume needed for foundations or excavation support is only partly accessible or assessable beforehand, specialist planning examines a suitable approach during construction. It describes the investigations needed together with assessment and communication of findings for the proposed construction works. Merely watching excavation does not replace a necessary survey. Site management receives coordination specific to the position or section concerning specialist works, communication of new findings and areas still unresolved. Further work follows the specific question that still needs answering for execution.
Agree the approach during constructionTechnical assessment
Select the investigation for the planned interventions
Relate aerial photograph indications to intervention planning
A historical aerial photograph analysis is read with its maps and explanations. Relate the information to the planned intervention points. Indications for a larger area require technical assessment for the specific position; a single map extract may contain too little information.
A position list connects the structural element label, location, proposed depth and corresponding plan version. Existing explosive ordnance reports are related to these positions using their maps. If a result exists only for a subarea or a single point, that scope remains visible. Positions not established are marked as provisional. Technical assessment also requires the complete explanations and appendices of the earlier assessment. Unclear location references are clarified with the participants before a decision is based on them.
Check local measurement conditions
A survey is matched to the investigation objective and local conditions. Structures, utilities and metal installations can influence measurement. A foundation type alone therefore does not determine a particular instrument. Areas that cannot be assessed must also be identified in the report.
The suitability of a method is checked using ground conditions, target objects, interference and accessibility. Existing utilities, reinforcement or other metal installations may affect execution and assessment. The investigation is described together with specialist assessment of the findings. For locations with limited assessability, record which findings are still missing. A necessary supplementary investigation step is directed at that specific question. Technical possibilities are compared with official determinations and the conditions for permissible private work.
Establish points, lines and depths in the commission
The clearance plan or the investigation plan describes the points, lines and depths to be addressed. Agree this scope in the commission. A result for individual structural elements does not then automatically apply to the remaining site area.
When a change occurs, record the original and new position, the reason and the different depth or construction method on the current plan. The review also considers elements outside the excavation outline and groundworks needed temporarily. Inclined support elements may have a different spatial relationship from vertical excavation. Depths are therefore stated with their respective starting levels. The earlier result remains usable within its documented scope; the new execution is compared separately before the affected works.
Next steps
Keep the investigation status and construction plans together
Initial contact and assessment of the evidence
At first contact, describe the proposed foundations, excavation support and decision needed. Site plans, structural element labels, depth information and existing explosive ordnance documents are compiled in full. If historical information is missing, the necessary aerial photograph analysis is initiated through the responsible local authority. Where use or terrain information remains unresolved, supplementary records and images are researched and assessed on technical grounds. Available indications are related to the interventions actually proposed.
Agree methods and prerequisites
Official requirements, access and utility information are compared with the investigation areas. The suitable method is determined by ground conditions, target objects, interference, depths and accessibility. The findings needed remain related to the identified points and lines. State measures and permissible private tasks are assigned to their respective responsibilities. Necessary preparatory works and missing information are clarified before execution. Participants use the same plan version for enquiries.
Investigate and assess findings
The agreed survey or technically suitable supplementary supervision is carried out under the established conditions. Data and observations are assessed on technical grounds and related to the positions addressed. The assessment distinguishes usable results, anomalies and locations with limited assessability. Deviations from the initial plan and agreed scope remain traceably documented. Further investigations or coordination still needed are derived from the specific outstanding technical question.
Document and compare with execution
Results are handed to the contractors with maps, conditions and limitations. Points and lines still open remain explicitly identified. Before the next intervention, compare the planned position, depth and construction method with the documented investigation scope. Changes receive an unambiguous plan reference and are coordinated before execution. Suitable existing findings remain usable for the area actually covered. Further planning relates outstanding specialist work and official decisions to the respective structural elements.
Documentation
The investigated structural element must be identifiable in the report
Document the structural element reference and actual investigation scope
The report and appendices must contain the plan version used, investigated areas, relevant depths and method limitations. If only part of the intervention list was addressed, it must be clearly identified. Identification must not depend on the memory of individual participants; the shared project name alone is insufficient.
Project responsibilities
The BFR Kampfmittelräumung describe specialist work on federal properties and provide technical guidance for planning and documentation outside their direct scope of application. In Velbert, local requirements and North Rhine-Westphalia’s responsibilities remain decisive. A private report documents the specialist work performed and its spatial and technical scope. Official decisions are made by the competent authorities.
Working approach
How FONTANA-EOD works
Document the agreed specialist service clearly
FONTANA-EOD addresses the agreed explosive ordnance question for the identified foundation and excavation support interventions. The current construction version and usable earlier documents form the basis. The task, accessible investigation areas and results needed are agreed before execution. A new structural element position, different construction method or changed site conditions are compared with this commission before the affected works. This includes changed access and starting elevations. The report documents the points, lines or areas actually addressed with their technical limitations. Site management can therefore trace which findings match the proposed execution and which additions are still needed.
Discuss the investigation taskThe task before the equipment
First identify which findings are missing for execution at a position or excavation support line. The method selected is justified using that technical question and the actual conditions. An instrument name or the approach at a neighbouring construction site alone is insufficient. The commission keeps the connection clear between the planned structural element, its intervention in the ground and the investigation needed.
Keep limitations visible
Inaccessible positions or areas with limited assessability are marked on the plan using their respective labels. Site management can then distinguish completed locations from investigation tasks still open. It coordinates when a suitable supplementary investigation will be possible for the next activity. An overall area figure is supplemented by these limitations. Even for neighbouring structural elements, it remains clear which point or area actually investigated a result relates to.
Clarify changes before intervening in the ground
If a foundation is moved, an excavation support line changed or a different construction method proposed, the responsible specialist planners receive the new version before the affected ground intervention. They compare position, depth and method with the previous results. The response and any supplementary work needed are related to the changed position. An unchanged project name or merely a newly assigned structural element number does not in itself confirm an unchanged investigation task.
Hand over the report and plan together
For the results handover, the report, position list and corresponding plans are provided as one consistent version. A brief overview may refer to the relevant findings and interventions still open. Its technical scope continues to follow from the investigation actually performed, with its spatial references and limitations. If site management or contractors change, these underlying documents are passed on in full. The next participant can then identify the suitable evidence and outstanding clarifications for each proposed activity.
Understand the results
Use technical statements for the next decision
The excavation outline does not describe every structural element
Foundations, excavation support and other interventions may have their own spatial boundaries. These are made visible in planning and related to existing results. Investigation of the interior does not automatically establish that additional lateral or deeper locations have been addressed. The documented scope of the specific task is decisive.
Understand investigation reports and their limitationsAn updated list must make changes identifiable
New positions or different depths must not continue unnoticed under an old label. Record the connection between the previous and new versions. The relationship to the investigation result is checked before the affected work. An unchanged file name or project title does not replace this comparison.
Understand the service scopeDesign and findings
Documents for the next construction decision
Historical evidence and the current design
Aerial photograph interpretation is related to the actual groundworks. Its purpose and geographical scope remain distinct from a technical investigation of the ground as it is today.
Understand aerial photograph assessmentSpecialist reports for site management
The findings, their locations and limitations are handed over together. This makes clear to those carrying out the work which area has been investigated and which task remains outstanding.
Assess investigation reports
Further technical topics
Further technical information for your project
Determine the specialist service from the planned groundworks
Historical assessment, technical investigation and subsequent work answer different questions. In your enquiry, identify the planned groundworks and the information needed to prepare them.
Compare servicesCoordinate the project sequence with everyone involved
Preparation connects the commission, site work and handover of findings. Changes to the project can then be incorporated into technical coordination in good time.
Process and documentationQuestions from planning
Questions about foundations and excavation support in Velbert
Is the excavation outline sufficient for an enquiry?
Not always. Add the individual positions and lines for foundations and excavation support, together with depths and construction methods. The investigation must match the works actually planned. Also state execution details not yet established. Clarify the assessment needed well before the proposed groundworks so that applications, preparation and investigation can be incorporated into the construction sequence.
Does the planning guidance on Posener Straße apply to every property?
The guidance belongs to the project-specific development plan 605.02 from 2017. Other properties are governed by their own documents, construction plans and official requirements. The plan does not permit conclusions about the whole of Velbert.
What happens if a foundation position is moved?
Enter the new position on the current plan and have it checked before execution to determine whether the previous investigation result covers it. Whether further steps are needed depends on position, depth and existing findings. Method suitability depends on ground conditions, target objects, depth and interference. Areas with limited assessability remain documented with their limitations.
Who decides on official measures?
In North Rhine-Westphalia, the local regulatory authorities are responsible for hazard prevention concerning explosive ordnance. Private specialist planning and investigation take place within the agreed commission. These services do not replace the official decision. The process combines document review and necessary historical assessment with method selection, investigation or suitable supervision, assessment and documentation. Before the next intervention, the results are compared with the construction plans.
What should you do if a suspicious object is found?
Stop work in the affected area, do not touch or move the object, and keep your distance. Keep other people away and notify the police immediately on 110. Follow the instructions of the responsible emergency services.
Why should structural element labels match in the plan and report?
So that the actual investigation can be related unambiguously to the proposed interventions. Changes to numbering or position must remain traceable. The site plan, structural element list, depth information and complete reports are handed over together with their appendices.
Which factors determine effort and costs?
The method, scope, depth, interference and accessibility determine the effort required. Positions still unresolved, supplementary investigations and necessary preparatory works influence the steps needed. The service agreement describes the permissible specialist task and results documentation. Preparatory, accompanying and follow-up works, and the respective allocation of costs, are agreed with the participants for the specific case. A foundation type alone establishes neither the investigation instrument nor the overall effort.
What should be done if a new depth is proposed under the same position number?
The change is documented with its elevation reference and technically reviewed before execution. The same label does not automatically confirm coverage of the changed intervention. Provisional positions remain marked; the final execution is compared with the agreed investigation scope.
Project enquiry
Coordinate foundations or excavation support in Velbert
Identify structural elements clearly
Send the foundation and excavation support plans with positions, lines, depths and construction methods at a consistent plan version. Add the project address, cadastral parcel, construction phase, timescale and decision sought. Depths receive an unambiguous elevation reference. The sector overview explains typical interventions and the documents they require.
Identify changes
Identify provisional positions and differences from the version covered by existing reports. Add the groundworks due first and the contacts responsible for providing further information.
Methods and technical limits
Methods and technical limitsProject sequence and coordination
Project sequence and coordination
Have your project assessed
Whether historical aerial photograph analysis, explosive ordnance surveying, surface surveying using GPR, magnetometry or TDEM, deep-ground surveys, downhole surveys, excavation supervision, area clearance or ordnance recovery is needed depends on the location, ground disturbance, depth, ground and existing documents. An early ordnance assessment provides clarity for tendering, programming, occupational safety and construction.
FONTANA-EOD combines its Section 7 SprengG licence, specialists holding Section 20 SprengG certificates of competence, suitable survey and clearance methods, and traceable documentation. Send the site plan, depth of ground disturbance, construction phase and existing documents for an initial technical assessment.
