INSTRUMENT & KNOW HOWThe use of efficient and accurate instruments has allowed GRS to succeed in an increasingly competitive market. The topographic measurements were combined over time to geotechnical surveys and geophysical prospection, in order to return models more and more representative of reality. The profound knowledge of with the actual state of the civil works allows the optimization of their available resources and the proper management over time.
Total station is an electronic theodolite integrated with an electronic distance meter and it is used to measure distances and angles. .
I. Topcon PS 101° (Robotic and servomotorized total station)
II. Topcon 9001 (Robotic and servomotorized total station)
III. Topcon 8001 (Robotic and servomotorized total station)
IV. Topcon 803 (Robotic total station)
Digital level is required to high precision height measurements for any job site as roads, railway tracks, airport runways and pavements and in order to fix a benchmarks network.
I. Leica NA 3003
II. Leica DNA 03
Services: high precision monitoring
The 3D laser scanner technology allows the generation of geo-referenced point clouds for creation of 3D models.
Depending on the type of survey it is possible to increase the detail of the acquisition up to evaluate material consistency of the object.
I. Riegl VZ400
The drilling machine of trailer is used to perform drilling and coring on pavement. The depth of coring that is possible to reach is 60cm with a diameter of 10cm or 15cm.
BEARING CAPACITY MEASUREMENT
Deflectometer testing allows to evaluate the physical properties of pavements layers both bound and granular material.
I. Dynatest - Heavy Falling Weight Deflectometer (HFWD)
II. Dynatest - Lignt Falling Weight Deflectometer (LFWD)
III. Dynatest - Dinamic Cone Penetrometrer (DPC)
GEORADAR-GROUND PRENETRATING RADAR
Ground Pentrating Radar allows to make non-destructive investigation of structures pavements and subsoil
It uses transmitting and receiving antennas that radiate short pulses of the radio waves into the ground and record return signals.
I.IDS - Ris MF-MOD
II.IDS - Hi Pave
III.IDS - TR-AL system
IV.IDS - Aladdin
RETROREFLECTOMETER & LUXMETER
The reflectometer is a tool that can simulate the conditions in which the horizontal marking is perceived when driving at night (RL) and day (QD).
In particular for night time conditions the instrument simulate headlights, for the daytime it simulates visibility during the light of day, solar or induced by the lighting road through diffuse illumination.
The luxmeter is an instrument which measures the lighting. These measurements allow to evaluate the environemental conditions, in compliance with the ENAC and ICAO requirements.
I. Zehntner ZRM 6013
II. CHAUVIN ARNOUX-PHYSICS LINE CA811
Services: measures retro-reflectivity
OPEN COVER MACHINE
Open cover machine is an instrument that allows the opening and safe inspection of almost all the manhole covers present both in the airport and metropolitan area.
I.FEDA UNIVERSAL 120
II.FEDA MAGNETIC RANGE
Servizi in cui sono utilizzati: reconstruction of underground network pipes
GPS-GLOBAL POSITIONING SYSTEMS E GNSS
Global Navigation Satellite System (GNSS) receiver allows to determinate a precise location over the earth surface using GPS and GLONASS satellite signals.
The use of GNSS systems in base-rover mode allows the differential corresction of the position, consenting to reach centimetric accurancy.
I. Topcon Legacy E-FC200 -PGA1
II. Topcon GR3 -FC200
III. GRS1 -PGA1