The geological structure and the pshysical-mechanical characteristics of the underground play an important role in designing buildings. Using direct methods such as open digging, drilling, sampling for laboratory tests, etc. and indirect geophysical methods, these characteristics can be determined with high precision. This method helps in making resistance and econom

1. Engineering topography
For the development of an engineering project for construction or
construction rehabilitation a great importance and attention must be given to
the projected cotes and to the verification of the interest elements.
 Precision land surveys
 Situation detailed plans
 High precision contouring
 Slope vertically tracing
 Labeling the site topographical network
 The assignment of the axes and of the landmark contouring
 Protract the important elements
 Follow up the time schedule of the buildings construction
 Measurements for the calculation of the excavation capacities
Using specialized software and equipment, the responsible persons can offer
the required support in accomplishing the proposed objectives of the project.
Applications:

2. Bathymetrical investigations
The bathymetry can be taken for the aquatic equivalent of altimetry. Being a
branch of hydrometrics, the bathymetry is dealing with the measurements of the
sea depth, lakes and river depth, allowing us to draw maps of their aquatic relief.
Descending the depth measurements technique with the help of the sonar and
the exact position given by the GPS technology, we can draft for you depth
maps or base relief structure maps for lakes or rivers, and also bathymetric
profiles on the interest zones.
This type of measurements has a large applicability in various fields and can
contribute to a good acknowledgement of the geo-morphological conditions:
 Tracking down the cloging of rivers and lakes
 Tracking down the excavation from the ballast-holes
 Exploration of the mineral aggregates from the river
 Drawing the maps for flooding risks
 Bathymetric sections and maps
 Hydrological studies
Applications:

3. Geoelectrical investigations
The geoelectrical investigation is one of the main methods of geophysics with
the help of which we can determinate the geological, hydrological and
technological characteristics of the underground.
 Geological characteristics determinations
 Map drawing of the contamination spots
 Infiltrations in dams and dikes
 Identifying of the non-homogeneities
 Galleries and underground cavities
 Groundwater exploration
 Identifying the fissures and drifts
 Buried pipes
 Geological sections
By adapting a device, the method can be applied also on rivers or lakes, which
allows us to find out their base structure, where the regular methods are not
able or they are difficult to be applied.
The multi-electrode method allows us to scan the field both in 2D and in 3D
the last one being ideal for the investigation of extended surfaces.
Applications:
This method allows an investigation depth which varies from 10-30 m for the
engineering projects and it can go until 300 m for the geological and
hydrological researches.

4. Magnetical and electromagnetical investigations
More than often, the locations of the future buildings are full of underground
networks of pipes, sewages or electrical wires. In order to avoid future problems
in the execution of the works and very useful in the design phase of the project
we must take into consideration the possible existence of those networks.
With the help of magnetical measurements we are able to identify all kind of
metallic objects buried in the underground.
•Electrical buried networks
•Construction foundations
•Concrete pipes
•Unexploded bombs
•Metallic pipes
•Buried docks
This kind of investigations can be made both on soil and lakes or rivers. The
method is most applicable on the vacant lands, un-affected by the industrial
environment, having a high profitableness.
Applications:

5. Georadar investigations
GRP (Ground Penetrating Radar) is an electromagnetic method non-
destructive which has a large practicability in the industrial environments
where the surface is covered with concrete. The investigation depth depends
on the geological environment where the research is located, and for the
engineering projects this depth is of 6-8 m.
• The analysis and the identification of the tunnels
• Geological and hydrological explorations
• Identifying the buried pipes
• Map drawing of the contamination spots
• Identifying the electrical buried cables
• Identifying the underground cavities
• Archeological researches
In particular situations, depending on the working conditions, we can obtain
3D images with the interest zone allowing us to see in detail the
underground conditions.
Applications:

6. Seismic refraction and MASW
Seismic refraction is a useful method for investigating geological structure
and rock properties. The technique involves the observation of a seismic
signal that has been refracted between layers of contrasting seismic velocity.
• Stratigraphic mapping
• Estimation of depth to bedrock
• Estimation of depth to water table
• Predicting the rippability of specific rock ypes
• Locating sinkholes
• Landfill investigations
• Geotechnical investigations
Applications:
Multichannel analysis surface waves (MASW) tests determine the speed
profile of Vs shear waves, therefore:
•Seismic actions for designing and verifying Civil Engineering works
•The soil seismic type (A, B, C, D, E, S1, S2)
•The soil rigidity module
•Sinking and displacement of works that interact with the soil: buildings,
bridges, embankment rises, supporting works, etc..

7. Hydrotechnical projects
The geophysical surveys use non-destructive methods to allow extensive
investigations of various hydro technical projects:
- Land, rock or concrete dams
- Protection dykes
- Functional dykes
Geoelectrical – Using the Vertical Electrical Survey (SEV), Electrical Tomography or
Mise-a-la-masse, this method has proven most efficient for locating areas of water
infiltrations and for scanning the density of the built-in material from the dykes or
dams.
Georadar (GPR) – It has a very high resolution and accuracy for areas made of
concrete, locating holes and anomalies in the density of the material below.
Seismical – This profiling method can accurately show data about the
homogeneity of the built-in material from dams or dykes.
Methods used:

8. Das Verfahren
Die elektrischen Eigenschaften des Baugrundes werden über ein
künstlich an der Erd- oder Wasseroberfläche erzeugtes elektri-
sches Feld, das dem Untergrund über Stromelektroden zugeführt
wird, erfaßt. Mittels Meßelektroden wird die sich einstellende Po-
tentialdifferenz gemessen und hieraus der scheinbare spezifische
elektrische Widerstand berechnet. Zur Ermittlung der Tiefenlage
einzelner geologischer Schichten sind eine Reihe von Einzelmes-
sungen erforderlich. Hierzu wird der Stromelektroden-Potential-
elektroden-Abstand unter Beibehaltung des Auslagenmittelpunk-
tes schrittweise so weit vergrößert, bis die gewünschte Informa-
tionstiefe erreicht ist.
Auf diese Weise wird der scheinbare spezifische elektrische Wi-
derstand als Funktion der Elektroden-Abstände und somit als
Funktion der Tiefe für den jeweils auf dem Profil festgelegten
Meßpunkt ermittelt.
Die computerunterstützte Auswertung ergibt schließlich die An-
zahl der Schichten, ihre Mächtigkeiten bzw. Tiefenlagen sowie
die einzelnen spezifischen elektrischen Schichtwiderstände.
M u t t e r b o d e n ,
s t a r k s a n d i g
F e i n s a n d m i t T o n a n s c h l ä m m u n g M i t t e l s a n d ,
k i e s i g , s t e i n i g
K i e s - S a n d
K i e s - S a n d , s t e i n i g
A u f f ü l l u n g
F e i n s a n d
T o n u n d F e i n s a n d , t o n i g
a ) S c h o t t e r
b ) S c h o t t e r m i t S t e i n e n
F l u v i o g l a z i a l e S e d i m e n t e G l a z i a l e S e d i m e n t e
a) b)
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T o n , f e s t
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Die Idee
Für eine optimale Planung und Durchführung einer Dükerbau-
maßnahme ist es erforderlich, möglichst detaillierte Kenntnisse
über den Untergrundaufbau im Verlauf der Trasse zu besitzen.
Die üblichen Vorerkundungsmethoden unter Einsatz von Ramm-
kernsondierungen, Kernbohrungen etc. lassen eine „lückenlose“
Untergrundbewertung im Bereich von Gewässerquerungen, ins-
besondere unter Kostengesichtspunkten, nicht zu. Hier bieten
sich die klassischen geoelektrischen Verfahren, die bei der La-
gerstättenerkundung seit langem routinemäßig eingesetzt wer-
den, für die Untersuchung der geplanten Trasse an.
Das Ziel der geoelektrischen Verfahren (z.B. Widerstandstiefen-
sondierungen) ist die Ermittlung der Verteilung des spezifischen
elektrischen Widerstandes im Untergrund. Sie stellt die Grund-
lage für die Bestimmung der Mächtigkeit bzw. Tiefenlage einzel-
ner geologischer Schichten im Verlauf der geplanten Verlege-
trasse dar. Mit den entsprechenden lokalen geologischen Kennt-
nissen z.B. aus Bohrungen kann daraus ein geologischer Verti-
kalschnitt modelliert werden.
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Rivers and lakes under-crossing
We use specific geophysical and geotechnical methods to obtain results which
substantially improve the knowledge about the itinerary of rivers and lakes under-
crossings.
Geoelectrical – using Vertical Electrical Survey (SEV) or Electrical Tomography, this
method has proven most efficient over time due to its high precision rate.
Magnetic Gradient – it can be used when we need to locate the metallic items on
the itinerary of the under-crossing.
Georadar (GPR) – this method has a high resolution and can be used in case of
shallow waters 1-3 meters deep
Land measurements – it delivers maps and topographic profiles needed in drawing-
up the future works.
Batimetry – this investigates the water depth, complementing the information from
the surface land measurements.
Methods used:

9. Infrastructure projects
As a result of our extensive experience in Romania and abroad, we developed a
complex package of services dedicated to the infrastructure projects development:
all types of roads, water works, major pipes, river under-crossing.
Topographic measurements:
•Vectorization maps and plans
•3D modeling for large areas
•GPS measurements
•Situation plans
•Longitudinal and transverse sections
•Stakeout and verticalization
•Accuracy levelling
Geotechnical studies:
•Geotechnical drilling
•Dynamic penetration tests
•Plate test
•Sampling
•Laboratory tests
•Documentation
Geophysical investigations:
•Vertical Electrical Sounding (VES)
•Geoelectrical profiles
•Geoelectrical maps
•Magnetic measurements
•Electromagnetic measurements

10. Mapping buried utilities and other items
We use dedicated geophysical methods to scan extensive areas in order to locate
underground items:
•Water utilities– concrete, metal or PVC
•Electricity lines– medium and high voltage
•Buried pipes – water, gas, petroleum products, etc
•Unexploded buried bombs ( UXO)
The depth of investigation varies from 1 to 6 meters and it depends on the area under
survey and on the size of the utilities in question. The methods are non-destructive
and highly accurate.
Methods used for locating under ground utilities:
Georadar (GPR) – it is highly efficient for industrial areas covered in concrete
Magnetic Gradient – this method is efficient for locating utilities buried under large
agriculture fields
Electromagnetic – this is complementing the information for the industrial areas, for
metallic pipes and electricity lines.
We can make such investigations on land or on rivers and lakes.

11. Photovoltaic parks
We can help you put the basis of a photovoltaic park by acquiring all the needed
information about the characteristics of the project area. We perform
measurements and surveys which allow a safer and more efficient development of
such projects in any given location.
Topographical surveys:
•3D modeling for large areas
•GPS measurements
•Situation plans
•Stakeout and marking
•Finally drawing
Geotechnical studies:
•Geotechnical drilling
•Dynamic penetration tests
•Plate test
•Sampling
•Laboratory tests
•Documentation
Geophysical investigations:
•UXO investigations
•Mapping underground utilities
•Electrical Resistivity Imaging
•Seismic Refraction and MASW

12. Wind power parks
The different stages of a wind power park project require various studies and
surveys: land measurements, geotechnical studies, geophysical surveys.
We have extensive experience in performing all these services and we can offer you
the best prices on the market.
Topographic measurements:
•3D modeling large areas
•GPS measurements
•Longitudinal and transverse sections
•Situation plans
•Stakeout roads and ditches
•Stakeout and plumb poles
Geotechnical studies:
•Geotechnical drilling
•Dynamic penetration tests
•Plate test
•Sampling
•Laboratory tests
•Documentation
Geophysical investigations:
•Seismic Refraction
•Seismic Surface Wave
•Electrical Resistivity Imaging
•Vertical Electrical Sounding (VES)

13. Aerial photography
Aerial photography provides useful insights into the development of projects from
the design stage, going to execution, inspection and maintenance. Using drones
(UAV) to capture aerial imagery brings extra flexibility in works approach with much
lower costs compared to conventional aircraft.
Aerial photography application:
• Orthophotomap and photogrammetry
• 3D terrain model
• Oblique and panoramic images
• Electrical Network Monitoring
•Agricultural and forestry inspection
•Multispectral photos
• Infrared thermal photos
• Industrial and residential buildings
• Wind farms and photovoltaic
•Construction and infrastructure monitoring
•Monitoring excavation pits
•Volume calculation of excavated material deposits
•Archaeological photos
•Communication pathways mapping

14. Geotechnical studies
Represent the first stage of the construction or strengthening of a target. This kind
of investigation gives information about soil structure and consistence, groundwater
level and provide recommendations for the technical project.
Geotechnical services:
•Geotechnical drillings
•Dynamic penetration tests
•Foundation uncover
•Plate tests
•Sampling
•Laboratory tests
•Hidrogeological studies
•Elaboration of the documentation
The geological structure and the physical-mechanical characteristics of the ground
play an important role in designing buildings. Using direct methods (open digging,
drilling, sampling for laboratory tests etc.), and indirect methods (geophysical
methods), determination of these characteristics is done with high precision. This
method helps to perform resistance and economical calculation.