1 - Profiler Verification Presentation Tymli Frierson ... … · 17/05/2018 · May 12, 2015 11...
Transcript of 1 - Profiler Verification Presentation Tymli Frierson ... … · 17/05/2018 · May 12, 2015 11...
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PROFILER VERIFICATION
TRC Transportation Engineering Conference
May 15-17, 2018
Tymli Frierson Advanced Research Engineer
System Information and Research Division
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OUTLINE
BACKGROUND
INERTIAL PROFILERS
REQUIREMENTS
VERIFICATION REQUESTS
FUTURE SCOPE
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ROAD PROFILE A two-dimensional slice of a road’s
surface
Transverse (lateral)
Superelevation
Crown
Rutting and other distresses
Longitudinal
Design grade, roughness
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INERTIAL PROFILERS
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INERTIAL PROFILER COMPONENTS
Inertial Profiling Systems (IPS) are used to
establish the profile of the roadway surface.
To accomplish this, the equipment uses 3 instruments:
Accelerometer
Laser Height Sensor
Distance Measurement Device
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INERTIAL PROFILERS
Sensors record longitudinal and vertical distances,
accelerometer
Calculate smoothness indices
Lightweight or high-speed
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LASERS
Single Point Laser
Triple Laser
Line Laser
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ARDOT SPECIFICATIONS
The Contractor shall furnish a California-style profilograph complying with ASTM E 1274 or an automated lightweight profilometer complying with ASTM E 950, Class I and calibrated to the California-style profilograph scale.
The Engineer will verify the calibration of the profilograph equipment as frequently as necessary to assure proper operation.
Scheduling and testing will be coordinated with the Engineer.
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JOB REQUEST
Resident Engineer contacts Research.
[email protected] and/or [email protected]
Profiler Verification form sent to RE to complete.
Job scheduled upon receipt of completed form.
Profiler Calibrated before job is profiled.
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AT THE JOB SITE
Upon arrival, have everything setup.
Pavement swept
Clean of all debris and loose material
Stations marked and easily located
300 ft of pre-section and 300-500 ft of lead-out
Traffic Control
LWP inertial profilers operates at 12 mph
Traffic Signals
Driveways
The person meeting the operator should know the
following:
Section to be profiled
Any station changes
What the RE wants
Calibration
Performed by the profiler operator
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BLOCK TEST
BOUNCE TEST
COMPUTER SETUP
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DATA COLLECTION
BETWEEN THE WHEELPATH
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TEST RESULTS
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10% VERIFICATION
JOBS
6 jobs in 2013
13 jobs in 2014
7 jobs in 2016
20 jobs in 2017
4 jobs in 2018
WHAT ABOUT THE CERTIFICATION COURSE?
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CERTIFICATION COURSE
PILOT COURSE May 12, 2015
11 participants
Certification only
CERTIFICATION Operator
Equipment
EXAMS Written
60 Questions
Multiple choice, True/False, etc.
70% minimum passing score
Performance 5 Stations
Block Test
Bounce Test
Distance Verification
Measure Profile – Asphalt Section
Measure Profile – Concrete Section
Re-trial allowed for each test
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FUTURE SCOPE
Continue doing verification jobs
Certification Course
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THANK YOU! [email protected]