Dulles Airport - Geo Instruments 122908

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GEO-Instruments800-477-2506

-. .

Selected Project OverviewOptimum Instruments

February 2006



Company History

Geo-Instruments was founded in 2003 to provide sales andservice to Geotechnical and Structural monitoring projects,focusing on remote data collection.

2

We make custom instruments, and represent SoilInstruments, UK in North America. We work with Syscom,Instantel, Optimum Instruments, Campbell Scientific andLieca Geosystems to provide a full range of solutions to

measure tilt, vibration, pressure, strain, displacement andtemperature – in the earth, or on structures



What we do:

Geo-Instruments provide solutions to:

Owners, Contractors, and Engineers to answerquestions about:

Effects of new construction on existing abutting

s ruc ures

Verification of design assumptions, during retainingstructure construction - in order to ensure safety,and reduce overbuilding costs. (Observational

method)

Monitoring existing natural geologic conditions(landslips) in order to provide design and earlywarning



Project Cases

• Memorial Sloan Kettering Cancer Center, Manhattan,NY, April, 2003.

• Pier 79 Ferry Terminal, (Monitoring Lincoln Tunnel) NY,

NY May 2003

• US Supreme Court, Washington, DCAugust, 2003.

• Marmet Lock and Dam Rehabilitation, Marmet, WV2003-current

• Dulles International Airport- Taxiway Tunnel Monitoring

with Wireless Extensometers Feb, 2005- current



Memorial Sloan Kettering CancerCenter Research Laboratory

• Remote, Optical Displacement Monitoringof abutting properties

• Urban environment is idea for remote

monitorin with: – Robotic total station reading 65 prisms

targets, in “real-time” with graphical site layout

– Monitoring for 100+ foot deep excavation inRock on the Upper East Side of Manhattan

– Provides movement data not otherwiseobtainable due to lack of access to site



MSKCC View fromTotal Station



Robotic Total StationMounting

• Rooftop mount overlooks subject site, andother structures to be monitored



Prism Installation, Looking AtTotal Station (On Lower Roof)



Pier 79 Ferry Terminal

• Monitoring Pile Driving affects on Lincoln Tunnelin NYC.

• 30 VW Piezometers

• 12 VW Crackmeters

• 6 Remote wireless IP SYSCOM Seismographs

• Real time data processed in CM site trailer, andpublished on project web Site

• Real time email alerts



Pier 79 Ferry Terminal

• Challenges:

– Active Tunnel, needed remote real time monitoring

– Limited Access – off revenue hours 1:00am to

4:00am

• Solutions:

– Remote access to three standard CR10X dataloggersfor all VW sensors

– Developed a wireless IP interface to SYSCOM

vibration Monitors to allow real-time unattendedmonitoring, via internet



Pier 79 Ferry Terminalaerial view



SYSCOM Vibration MonitoringSystem Setup



Plan View, web site



Section View Real Time



US Supreme Court

• Monitoring historic marble structure duringadjacent excavation for undergroundexpansion.

• 24 IPI sensors• 1 VW Crackmeters

• 7 Tiltmeters

• Real time data processed in CM site trailer

with, and published on project web Site,via IP connection



Tiltmeter Installation



Real Time

Software Display



IPI Real Timeand Profile View



Marmet Lock &Dam Rehab USCOE

• Monitoring existing lock structure during construction ofnew, adjacent lock.

• 180 Inplace Inclinometers (IPI sensors)

• 40 VW Piezometers

• 24 Tiltmeters• 40+Traversing Probe Inclinometers

• Manual measurements with digital micrometer

• 30, solar powered Geomation MCU’s with radio link

• Real time data processed in CM site trailer with, and

published on project web site• Real time email alerts



Lock Wall & Cofferdam



Lock Excavation



Typical DataloggerInstallation



Dulles Airport – Wireless MPBX’s



Dulles Improvements



Dulles Overview



New Tunnel ConstructionMonitoring

• Challenges:

– Active airport taxiways,

– 24/7 tunnel operation over large area,

– Limited Access to instruments (active taxiway)

• Solutions:

– Automated, Wireless MPBX System for easy

field installation , and unattended datacollection. This the first of it’s kind “state of

the art” system



What is an MPBX?

– Multiple Position Borehole eXtensometer

– Installed in a borehole, in rock or soil.

– Consists of tensioned or un-tensioned fiber

glass, or stainless steel rods, anchored at

specific depths in borehole

– Anchor movements are measured at the top,

either manually, or electronically.

– Used with Tunneling, Mining, Landslides,

retaining structures….



Why use an MPBX?

– Safety of Airport Operations – early warning of

tunneling induced, unexpected ground loss

under airplane taxiways.

– Allows unobstructed access to Airport

operations on Taxiway.

– Allows real time access to current data.

– Battery powered for months of operation

minimizing disturbance to day to day airport

operations



Dulles Airport WirelessMPBX’s details

• Monitoring existing active airport taxiways during peoplemover NATM and TBM tunnels.

• 2 Contracts 3E and 3W total of 69 wireless MPBX’s

• Self contained battery pack – provides up to 6 month life

• Uses DD400 with internal xtend radio transceiver – provides data excitation, logging, and data transmission.

• Use system repeaters and base stations/IP tunnels tosend data to off site servers.

• Allows unobtrusive access to settlement/heave datawithout closing active taxiways airport

• MPBX System allows easy installation and all accessfrom the top of hole



3E MPBX Layout



Taxiway Cross SectionInstallation



Dulles 3W APMNetwork Layout



MPBX InstrumentCross Section



Plan View of MPBXreference head

SIGNALCONDITIONING/LOGGER



MPBX Reference headAssembly



MPBX Assembly – Power Pack



Leak TestingMPBX



Antenna/Instrument CoverComposite



Installation in Borehole – Hole Prep (flushing)



Installation in Borehole – Insertion in Borehole



Installation in Borehole – Final Grouting



Installation in Borehole – Setting



Programming on Runway

• Set up and troubleshooting with Wireless IP

EVDO connection

• Verification of system comms at borehole

• Easy set up in one step• DDServer allows remote programming, if

needed



Installation in Borehole – Antenna Fixing



Typical Web BasedSection View



Typical Trend Graph – Battery Voltage



Thank You!

Dulles Airport - Geo Instruments 122908

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