Project pathway
The quickest route to the right decision.
Explosive ordnance surveys in Pulheim for alterations and extensions
An extension, new foundation or additional service connection may affect volumes of ground for which older construction plans contain no ordnance findings. FONTANA-EOD helps with specialist clarification for alterations and extensions in Pulheim. Today's ground interventions are related to investigation results actually available and their limitations.
Compile existing plans and reports.
Show the extension, foundations and connections in the design.
Clarify missing information before groundworks.
Assess the construction project
Link existing construction documents to today's project
For alterations or extensions in Pulheim, older plans help assess the existing building. What matters remains where today's ground interventions will take place and what findings exist for them. We compare existing conditions, new plans and evidence, and identify further specialist needs.
Project site
Connect the site with the specific construction task
Involve Pulheim's construction archive and public order department specifically
For a construction project in Pulheim, existing knowledge and new ground intervention plans are brought together. The town identifies the Pulheim public order office as the contact for aerial photograph analysis applications and refers to the explosive ordnance disposal service at the Düsseldorf District Government. The permissible private specialist service is agreed with its specific task and results needed.
The overview of the Cologne administrative district provides further local information for the regional context of your construction project.
Local context
Bring Pulheim construction files and historical findings together
The Pulheim town archive describes artillery fire and the entry of American troops in early March 1945 using the Sinthern school chronicle. Such local accounts may supplement historical assessment of a development area. For a specific property, they are linked spatially using suitable aerial photographs, maps and other findings. Construction files serve the separate purpose of identifying the construction planning status at the time. For today's alteration, these different documents are brought together with the volume of ground actually planned to be affected; a single chronicle does not describe a technical investigation of the property.
Use Pulheim construction files to plan around existing buildings
Owners or their authorised representatives can inspect existing building documents in Pulheim's construction files archive. The town lists floor plans, sections and structural calculations, among other documents. For alteration plans, this can first establish which construction documents are available at all. Entitlement to inspect must be demonstrated.
Assess archive documents and ordnance clarification separately
A construction plan documents a construction planning status. Ordnance clarification additionally needs earlier analyses, result reports and their maps. The town of Pulheim recommends considering aerial photograph analysis before larger construction projects even where ordnance has not previously been found in the area. The application is addressed to the public order office.
Investigation task
Which specialist task comes next?
Describe the specific gap in existing knowledge
As-built documents may explain location and construction but do not automatically answer every subsurface question. Compare existing findings with today's planned ground interventions. Further needs follow from this. Investigation methods are then assessed according to the question, site conditions and legally permissible scope.
Assess historical documentsSeparate responsibilities before commissioning
Archive access, official ordnance clarification and supplementary private specialist services concern different tasks. Prerequisites and authorisations required for the specific North Rhine-Westphalia commission are checked. The agreed scope identifies the finding needed and its limits. An older permit does not replace outstanding coordination for today's ground intervention.
Compare investigation methodsProject types
Develop traceable ground intervention plans from existing documents
Record existing plans with their origins
Record which process and version a plan comes from. A drawing may show earlier plans without depicting every later change. Known differences are recorded additionally. For today's assessment, documents and available information on actual existing conditions are therefore considered together. A drawing register can support this assignment. It identifies available drawings and their versions without inferring completeness of the existing-condition record from the number of documents. Outstanding questions are passed to the responsible designers.
Document findings and their limitations
Define new structures spatially
Show which parts are retained and where new work is planned. This may include connections and ground interventions outside the existing building. Depth and reference elevation are stated traceably. Specific boundaries help compare existing findings with new tasks.
Specialist services and investigation tasksIdentify contradictions before further planning
If drawings, information or known existing conditions differ, this uncertainty is explicitly recorded. Arbitrarily choosing the most convenient version does not create a reliable basis. Clarify what information is needed for the next specialist task. Additional findings then receive a traceable reference to current plans.
Coordinate the sequence and tasksRequirements
Clarify technical requirements and responsibilities within the project
Relate requirements to the specialist task
For commissioned activities, clarify applicable specialist requirements and matters of permits, qualifications and responsibility. The service scope actually planned is decisive. Qualifications and responsibilities are assigned to specific tasks and interfaces.
Link occupational safety to the construction sequence
Risk assessment, work areas and communication must suit the proposed activities. Ordnance specialist works are coordinated with the other construction activities. Operational organisation, traffic safety and other specialist technical inspections retain their own responsible parties. Joint coordination brings the information together without equating the different tasks.
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 Pulheim, the public order office is the municipal interface for ordnance hazard response. The state explosive ordnance disposal service at the Düsseldorf District Government provides specialist support to the local public order authority and covers the Düsseldorf and Cologne administrative districts.
Procedure at the site: Town of Pulheim: construction files archive · Town of Pulheim: ordnance.
Planning and documentation: BFR KMR: principles of clearance planning · BFR KMR: geophysics · BFR KMR: documentation · North Rhine-Westphalia Ministry of the Interior: explosive legacy
The BFR Kampfmittelräumung apply directly to the federal properties specified there. For other projects, they provide specialist guidance for planning and documentation alongside applicable local requirements and responsibilities.
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. Technical suitability alone does not establish that a private commission is permissible. The information held by the authorities and the authorisations required for the activity are checked before an agreement is made.
Working together
Distinguish the tasks of client, designers and specialist contractor
Client and operator
The developer describes the project and provides existing project documents. The operator adds requirements concerning use, access and scheduling. A coordinating contact facilitates cooperation but does not thereby automatically assume all other participants' tasks. Before commissioning, clearly record what information is missing, who obtains it and which decision the result is intended to support. Also identify who currently uses the building and who coordinates entry to the property. During ongoing operations, investigation areas, deliveries and routes to keep clear must fit actual use conditions.
Planning and construction management
Specialist planners describe areas, depths, construction methods and changes. Site management coordinates the planned sequence with contractors and agreed specialist work. Results are assigned to each ground intervention. A technical plan change is communicated early enough for its effect on the investigation task to be assessed before construction. Organisational section boundaries remain distinct from specialist investigation boundaries. The scope also includes temporary works wherever groundworks are planned for them. An additional abutment or temporary site access route may affect a different area from the permitted building. Such changes are passed to specialist planners with their location and construction depth.
Specialist company and competent bodies
The private ordnance specialist contractor undertakes the agreed investigation and documentation scope. Official requirements and decisions are clarified with the respective responsible authorities. Documents needed for a specific procedure depend on the site and project. The technical report assigns the specialist service performed and its findings to the planned ground intervention. Other specialist assessments and official decisions are handled within their respective remits.
Preparation
Prepare the scope and commission together
Whether an investigation task may be commissioned privately depends on the specific North Rhine-Westphalia procedure and applicable legal conditions. The permissible activity is clarified before an agreement.
Establish what needs to be known before commissioning the work
For the Pulheim commission, compile existing building documents and actual ordnance results separately. Floor plans, sections and structural calculations help assess the construction planning status at the time. They do not show an ordnance investigation performed. Today's extension, new foundations or connections are described by location, depth and construction method. This determines whether documents first need assessment, additional volumes of ground need investigation or already assessed findings need further work. Specialist work and result documents needed have a clear reference to these ground interventions.
Define the specialist taskCoordinate preparatory work with the investigation
Before the investigation date, clarify actual survey access and existing utility information. Details from older construction files are compared with today's conditions; later installations or changes remain identifiable. Necessary preparatory work depends on the method and site. Additional breaking out or other ground interventions to create investigation access are prepared with specialist input and the responsible parties, rather than undertaken independently. Entitlement to inspect files and actual fieldwork prerequisites serve different purposes.
Clarify preparatory work in the programmeAgree a clear scope and schedule
The commission describes today's construction task and the results already available for it. Partially accessible areas and missing prerequisites are considered in its scope. Effort and dates depend on actual access, documents and coordination; interpretation and handover form part of the sequence. Outstanding differences between older plans and current conditions are identified. Plan changes are compared with the agreed commission before additional specialist work. An unchanged building footprint alone does not determine investigation needs for a new ground intervention.
Discuss the scope and scheduleTasks at the site
Information needed for planning on an existing site
01
New and existing structures
Mark in the design which foundations remain and where new ones are to be built. If part of a building is removed, include the intended demolition scope. Specialist review must identify which work affects the ground and which is solely above it. Underpinning may affect the ground immediately beside an existing foundation. Show specialist planners the intended working area and planned depth accordingly. Structural design and ordnance investigation are coordinated within their respective tasks.
02
Elevations and depths
Mark planned depths with their elevation reference. A figure below ground level remains unclear if ground conditions have changed since the older plan. Identify such differences and have the responsible designers add missing elevation information. For a deeper basement or changed foundation, earlier investigation depths must be compared using the same elevation reference. A figure in an older report can be assessed meaningfully only with its reference elevation and actual investigated location.
03
Connections outside the extension
A new utility trench may extend beyond the building extension itself. Mark its planned route, shafts and other new installations. Whether an existing report covers these areas is checked using its maps and investigation depths rather than the property address alone. Also mark a laterally relocated connection or additional shaft. Show the full route to the intended connection point. Sections already investigated and additional volumes of ground needing clarification can then be distinguished spatially.
04
Conflicts in older documents
Different plan versions should remain identifiable. Record where today's conditions differ from a drawing or an earlier report cannot be assigned clearly. Missing information is passed on as an outstanding question, rather than replaced by an apparently fitting assumption. An identifiable difference is recorded with its origin: does it come from an older permit, later survey or current construction plans? The responsible designers clarify which version applies to the next work.
05
An older floor plan and a new extension
The existing plan shows the earlier building, while the new design adds a structure. Provide both with clear revision status. Specialist planners define the volumes of ground affected and compare them with existing ordnance documents. Only this comparison identifies findings usable for the new work and questions still needing clarification.
06
Deeper foundations or an altered basement
A changed foundation may extend beyond an earlier investigation depth. State the location, planned depth and reference elevation. The next decision considers actual investigation depth, existing limitations and the new construction task together. Additional needs are determined by specialists and coordinated with other planning tasks.
07
A connection outside the building area
A new utility trench or shaft may affect areas barely described in older building documents. Mark the entire planned route. Existing reports are assigned spatially; remaining gaps and access conditions are recorded. The investigation is coordinated with the volume of ground actually required and intended construction section.
Project documents
Documents that establish the next step
Distinguish existing conditions and new work in the result
Documentation records the areas considered and activities actually performed. An existing building is not described as fully investigated merely because of its age. Findings are assigned to the current task. Unclear parts or those not addressed remain identifiable for later participants. If legally permissible area clearance forms part of the agreed scope, it is also documented with its actual boundaries. A clearance record describes the task performed and findings identified. Further work steps are assigned to those responsible.
Keep documents usable for further construction sections
Keep the as-built plans used, current plans and results together with their respective revisions. A later change can then be compared specifically. For additional ground interventions, check which findings already exist. Documentation does not replace a new assessment where the later scope extends beyond the previous area.
Construction sequence
Coordinate investigation and construction sections
Compile existing conditions and the new design
Bring existing plans and known changes together with current ground intervention plans. Identify contradictions and documents still missing. The next specialist questions can then be defined specifically. An early overview helps coordination without inferring an established overall condition from incomplete archive documents. Distinguish approved drawings, later as-built surveys and sketches with dimensions still outstanding. The origin of each detail remains clear. A current survey and assessment of older documents answer different questions and may complement each other in assignment.
Compare changes before the next work step
Compare the planned construction with the scope previously addressed. Record relocated connections, new foundations and additional depths. Results receive the appropriate reference to the construction section. Site management receives a current status clearly identifying remaining limitations and decisions still needed. Handover also identifies areas where investigation is possible only after another section. The next decision can then relate to actual processing status rather than assuming the entire property complete.
Method selection
Select methods according to the task and survey conditions
Historical records and aerial photographs
Historical aerial photograph analysis and other older documents help locate the basis for suspected ordnance. Earlier construction drawings are linked with suitable images and other findings; their different purposes and periods remain clear. Availability, interpretability and area boundaries determine historical knowledge. The absence of a visible indication is not a present-day subsurface measurement. For the alteration, findings are assigned to the actual volumes of ground affected by new work. A plan of the earlier building does not generally confirm all today's foundations, connections or other additional interventions.
Understand aerial photograph assessmentMagnetometric survey
Magnetic methods detect magnetic anomalies. Suitability is assessed for expected objects, ground conditions, interference and the volume requiring investigation. Fences, utilities and existing structures may affect interpretation. Older drawings are therefore related to installations actually present. Signal strength alone does not identify explosive ordnance. Measurement, assessment and necessary further clarification are planned as a coherent specialist task. Results apply to the areas and conditions addressed, rather than merely an earlier drawn building outline.
Understand the scope of magnetometryElectromagnetic methods
Electromagnetic investigations may suit certain metallic targets and site conditions. Selection considers the finding required, accessible survey areas and interfering installations; instrument availability alone is insufficient. Distinguish current conditions from older plan information. Results have a spatial reference and details of actual investigation conditions. Whether an additional method is needed follows from specialist assessment and the outstanding question for the extension or new connections.
Understand electromagnetic surveyingGround-penetrating radar
Under suitable conditions, ground-penetrating radar can provide information about subsurface structures and reflections. Ground conditions, moisture and installations affect interpretability. A reflection is not automatically ordnance; an area without notable signals does not confirm any arbitrary depth. Specialist interpretation and limits are documented with the commission. A radar report on existing structures or utilities is checked for purpose and scope before use as ordnance evidence. For today's construction work, what matters is whether the volume actually covered fits the new plans.
GPR and limitationsDeep-ground and downhole surveys
For deeper ground interventions, it may be necessary to assess whether a surface investigation can establish what is needed or whether another approach is required. New foundation positions are prepared with location, depth, reference elevation, borehole layout and existing utilities. Suitable investigation access is also planned by specialists. A standard grid or general depth figure does not replace this task. An older structural calculation does not, by itself, document an ordnance investigation at today's positions. Results remain tied to the volumes of ground actually addressed and the method used.
Prepare deep interventionsSurvey during construction
If a necessary advance investigation cannot be completed in full, specialists assess whether a planned approach accompanying construction is suitable. Investigation, interpretation and communication of findings are linked to the actual alteration work. Visual observation of excavated material alone does not replace a necessary survey. Site management receives the allocation of specialist work, new findings and unresolved areas within the programme. If comparison of construction files and existing conditions identifies additional ground interventions, include them in specialist coordination before the affected activity.
Agree the approach during constructionTechnical assessment
What still needs investigation for the new work
Include preliminary research
A historical aerial photograph analysis is read alongside other findings for the planned area. Its spatial coverage and remaining uncertainties must be considered. Even for a building used for many years, the question of new groundworks cannot be answered from previous use alone. An older statement includes its cited annexes and actual area coverage. If only the covering letter is available, obtain the missing map specifically. The place name or same postal address alone does not replace spatial comparison.
Survey conditions beside the building
Foundations, utilities and other installations may affect the conditions for a survey. Which method suits the specific question is assessed by specialists. Proximity to a building does not automatically determine a particular instrument or the need for an additional investigation. Available information on existing utilities, ground structure and known interfering objects is considered during preparation. These details describe investigation constraints. They do not, by themselves, establish either a specific ordnance finding or an unrestricted statement about the ground.
Define the construction sequence
In the clearance plan the necessary investigation and construction steps are coordinated. Any design options still open must be identified. An unresolved area must not be excavated in advance merely because an extension is to be built there later. If part of the building remains in use during the extension, coordinate its necessary access with the planned specialist work. A changed construction sequence may affect the investigation volume available and is therefore communicated before the affected work.
Next steps
Prepare and interpret the investigation for alterations
The specialist work required depends on the project and existing findings. Those involved agree the steps needed and their sequence for the respective construction phase.
Check the enquiry and documents
File as-built drawings, permit documents and ordnance reports separately. Keep the associated maps with every report. Specialist planners can then identify which finding concerns the existing structure and which actually rests on investigation of the ground. State which original documents are available and which have only been mentioned. For initial coordination, specialist planners need identifiable existing conditions, the new plans and the specific question to answer.
Obtain documents and agree the plan version
Compare planned work with existing conditions. This also includes changes added only during further planning. A traceable comparison enables targeted review but does not replace specialist assessment of existing results. Missing documents are obtained from the respective owners or responsible authorities. The current plan version receives a clear label. Spatial and temporal boundaries of the investigation task are agreed with those involved before execution is prepared.
Assess specialist needs
Existing findings are compared with the planned groundworks. This includes spatial coverage, investigation depths and identifiable limitations of earlier results. Specialist planners define the outstanding question and suitable approach. Official requirements and prerequisites for permissible private commissioning are clarified with those responsible. Existing historical analyses and aerial photographs are related to today's ground interventions. Where information is missing, the necessary official aerial photograph analysis is initiated through the public order office; documents needed are researched and suitable images assessed by specialists. Necessary additions and a method suitable for the ground, interference, target objects and intervention depth are agreed.
Prepare the investigation
The agreed scope is prepared with access, utility information and conditions at the existing building. Identify building parts still in use, routes to keep clear and areas still occupied. Those involved agree a suitable specialist work sequence. The affected investigation is performed only once the necessary prerequisites are clarified.
Carry out the investigation
The investigation task clarified with the public order office and specialist planners is coordinated with the intended construction programme. Outstanding area or depth information is added before affected work. Specialist work takes place in the agreed areas actually accessible. Different local conditions or new findings are recorded and discussed with those responsible.
Assess findings with specialist input
Data and findings actually recorded are assessed in relation to the method used. Differences from the planned work and limited findings remain clear. An anomaly is assessed according to its specialist significance. Necessary further clarification or official measures are handled through the agreed responsibilities.
Hand over the report and spatial reference
The investigation performed is documented with location, scope, results and limitations. Site management receives the report with applicable maps and the associated plan version. For partial work, unresolved areas are expressly identified. Further construction can then be coordinated with the specialist finding actually available.
Coordinate the result and next construction phase
The applicable version must reach those carrying out the work. Hand over results with the associated plan version and recorded limitations. If a foundation is later relocated or deepened, check again before that work whether the documented finding is sufficient.
Documentation
A report applies to its documented investigation scope
Findings and their scope
Final documentation should clearly identify investigated and uninvestigated areas. This particularly matters where only part of a property changes. A finding for the extension must not be transferred unchecked to a utility connection further away. Even a complete construction file does not replace this spatial assignment.
Project responsibilities
FONTANA-EOD undertakes the agreed specialist task. Official decisions remain with the responsible authorities. The BFR Kampfmittelräumung contain principles for planning and documentation and apply directly to federal properties. For other projects, they provide specialist guidance alongside applicable local requirements.
Working approach
How FONTANA-EOD works
Document the agreed specialist service clearly
FONTANA-EOD undertakes the agreed specialist task for the current Pulheim alteration and ground interventions described. Existing building documents and ordnance results are assessed according to their respective purposes. Accessible areas and results needed are agreed before work begins. Changes to plans or local conditions are reviewed before the affected work. The report documents the work actually undertaken and its limits. Site management can trace which finding covers the new ground intervention and what additional clarification is still needed.
Discuss the investigation taskThe task before the equipment
Method selection starts with the information missing for today's foundation, extension or connection. Specialist planning considers existing results and actual conditions. An available instrument or similarly altered neighbouring building is not sufficient as the sole basis. Older construction plans support assignment of existing conditions but do not replace specialist justification for the method. The finding needed is assigned to the specific volume of ground in current plans.
Keep limitations visible
Inaccessible areas and areas with restricted interpretability are identified with their actual boundaries. Site management can assign outstanding alteration work and necessary additions to them. A general building or property area figure does not replace these limits. Planning and construction teams agree when a suitable investigation can be undertaken. Investigated areas and additional foundation or connection volumes remain distinguishable even if within the same older building drawing.
Clarify changes before intervening in the ground
If a foundation moves, an extension grows or a different depth or construction method is planned, compare the change with existing results before the affected work. Specialist planners receive a clear account of the difference from the area previously considered. Their response and necessary additions are assigned to the new volume of ground. An unchanged house address or continued use of an older plan does not replace this specialist comparison.
Hand over the report and plan together
Construction documents and actual result reports are provided in full at handover with their respective associated plans. An overview can point to earlier building conditions, today's plans and outstanding specialist questions. It does not replace the documented investigation scope. When site management or contractors change, the documents' purposes and spatial limits remain clear. Further construction can use applicable results and specifically identify additional volumes of ground as tasks still needing clarification.
Understand the results
Use technical statements for the next decision
An older plan needs comparison with existing conditions
A date and plan title help assessment but do not prove complete present-day construction conditions. Later alterations or added connections may be missing. Record known changes and uncertainties. Further planning can identify which details are already traceable and which still need adding. Mark identifiable extensions, changed external basement walls and utilities added later on the existing plan. If dimensions or elevations remain missing, the gap explicitly remains. Subsequent specialist planners then receive a clear starting status for their task.
Understand investigation reports and their limitationsConnection works may extend beyond the building area
Show the full route of planned groundworks insofar as already settled. The new ground intervention may affect different areas from existing construction files or previous investigations. Compare these areas separately. A shared construction project therefore does not automatically mean a uniform existing evidence status. This also concerns work supporting future use, such as additional drainage, new shafts or foundations outside the building footprint. The ground intervention actually planned is decisive. Organisational project boundaries alone do not fully describe this volume.
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
Assign the specialist service required to your specific question: historical evidence is analysed, defined areas are technically investigated, and assessed findings are addressed further through the agreed procedure.
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 work on existing buildings in Pulheim
Can I inspect the construction file as a commissioned designer?
Pulheim's construction files archive also permits inspection by authorised representatives. Entitlement must be demonstrated. Clarify with the building control office which documents exist for your building and how inspection works. Agree document and investigation needs before the planned ground interventions. For specialist review, compile as-built drawings, current ground intervention plans and complete ordnance reports with maps.
Does an older building permit prove the new extension has been investigated?
No. Check the ordnance documents actually available and their spatial and specialist findings. A permit drawing alone does not evidence an investigation performed. Compare the planned extension with documented results.
Does an earlier result cover a new service connection?
This depends on the location, depth and investigation scope of the earlier report. Overlay the new utility route and check limitations. If areas or depths remain unresolved, specialists must identify further clarification needed. The method used, local interference and depths investigated limit what the report establishes for the new utility route.
Does every alteration need a new survey?
Not every plan change automatically leads to another survey. First compare the actual ground intervention with existing findings. The need for additional investigations follows from this comparison and applicable requirements. The sequence runs from document review and any supplementary historical analysis through method selection and investigation to specialist assessment and documentation. Agree specialist investigation needs with the contractor and official requirements with the responsible local authority.
What should be done if a suspicious object is found?
Stop work in the affected area. Do not touch or move the object; keep your distance and other people away. Notify the police immediately on 110 from a safe distance and follow the authorities' instructions.
What determines the survey workload and costs?
The method, area, depth, interference and access determine investigation effort. Missing documents, parts of the building still in use and necessary preparation must also be considered. For commissioning, agree the specialist service and intended result documents with their specific scope. The responsible parties clarify cost allocation under the particular procedure.
What belongs in ground intervention plans for an extension?
New structures and foundations, connections and other groundworks with location and depth. Known reference elevations and changes from existing conditions help assignment.
How do earlier results remain usable for later construction sections?
By comparing their actual scope with the new plans. Additional areas or depths are expressly identified and assessed again by specialists where needed. Where as-built plans conflict, identify the differences and compare them with available information on actual conditions. Unclear details needed for the next task are clarified specifically.
Project enquiry
Prepare the first technical discussion
Include as-built documents
Send existing construction plans and indications of later changes. Include complete ordnance reports with associated maps. Identify documents still missing and details not yet clarified. State what specialist support is needed for the alteration or extension in Pulheim.
Mark new ground disturbance
Show structures, connections and known depths for the current work. State which earthworks are due first and which areas are not yet accessible. Necessary preparation and handover of results can then be aligned with the actual sequence.
Project sequence and handovers
Project sequence and handoversTechnology and measurement conditions
Technology and measurement conditions
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.
