pavement maintenanceharry lorton, pe txdot aviation division why? 2000 2018 2000 2018 pavement by...
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Texas Aviation Conference 2019
PAVEMENTMAINTENANCE
Harry Lorton, PETxDOT Aviation Division
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WHY?
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2000
2018
2000
2018
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PAVEMENT BY THE NUMBERS32,700,000 SY – Total Airport Pavement
• Asphalt - 25,100,000 SY• Concrete - 7,600,000 SY• Acres - 6,756• Miles of Runway – 380• Roadway Equivalent Lane Miles – 4,645
• NY to Anchorage Alaska, 4,501 miles
• Football Fields - 5,118
To Build Today - $4.6 BillionTo Maintain per Year - $42 Million
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• Most airport pavements:– Do not fail because of load-induced damage.– Are eventually destroyed by the elements:
• Most destructive element is excess moisture.• Sun UV, Rain, and Wind Erosion damage.• If protected from weather induced damage,
service life of pavement can be much longer.
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Cracks allow moisture infiltrationCure = Crack Seal
TREATED
Weathering allows surface disintegrationCure = Sealcoat
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PAVEMENT MAINTENANCE
• Maintenance is the most cost-effective way to extend pavement life.– Retards Deterioration = Crack Sealing and Surface Sealcoating
• Proper Maintenance Management reduces total cost of pavementpreservation.
• Pavement Maintenance Management Plan required for any Airport!!!!!!!!
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If you have accepted money for a pavement project; known as FAA Grant Assurance 11.
Required by the FAA/TxDOT
“11. Pavement Preventive Maintenance.
With respect to a project approved after January 1, 1995, for the replacement or reconstruction of pavement at the airport, it assures or certifies that it has implemented an effective airport pavement maintenance-management program and it assures that it will use such program for the useful life of any pavement constructed, reconstructed or repaired with Federal financial assistance at the airport. It will provide such reports on pavement condition and pavement management programs as the Secretary determines may be useful.”
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What is Pavement Management Plan (PMP)?A set of procedures to observe, record, and maintain airport
pavement; FAA AC 150/5380-7B.
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What are some of the basic elements of the Pavement Management Plan?
Airport Plan showing your pavement areas and history.
Inspection schedule.o Detailed – Yearlyo Observational – At least once a month, the more the better.
Record Keepingo Inspection Date, Location, Problem type, and maintenance needed to be
done.
Maintain It!!o Fix it while it’s a small problem!
Crack Seal. Grass growth; especially at pavement edges. Erosion.
DO YOU DO THIS?
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Texas A&M Transportation Institute – Texas (A&M) = TOM FREEMANo Assists TxDOT Aviation in performing pavement evaluations.
o Conducts Pavement Condition Indexing (PCI)
PCI is a visual numerical indicator that reflects the structural integrity and surface operational condition of a pavement.
Primarily for developing the scope of a new project.
o Future Goals Disseminate condition reports to Sponsors. Broaden work to include all system wide airports; routinely
PAVEMENT CONDITION
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PCI REPORT
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http://ftp.dot.state.tx.us/pub/txdot-info/avn/pmp-2000.pdfOr Google TxDOT Aviation PMP 2000
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https://www.faa.gov/airports/central/airport_compliance/pavement_maintenance/media/sample-maintenance-program.pdf
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WHERE? WHAT? HOW & WHEN?
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TxDOT AVIATION ASSISTANCE Routine Airport Maintenance Program (RAMP) can assist 50% of the cost.
Statewide Airport Pavement Preservation Program 90% of the cost.• Limited to Surface Treatment, Crack Sealing, and Marking.
Planner’s will review your Pavement Management Plan and RAMP participation when considering funding for capital projects.o Are you taking care of the airport?o Are you going to take care of the airport?o Are the airport’s airside needs met?
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Texas Aviation Conference 2019
DRAINAGEISSUES
Harry Lorton, PETxDOT Aviation Division
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DRAINAGE ISSUES ARE IMPORTANT
Drainage issues can lead to pavement deterioration undermining pavement and pipe systems.
Drainage issues can lead to soil erosion impacting the entire airport drainage system.
Drainage erosion issues can have soil & water impacts to your downstream neighbors.
Drainage issues can lead to standing water and wildlife issues.
Drainage issues if not maintained early can lead to costly repairs in the future.
• New ditches average about $60 per foot to build, small airport that cost is upwards of $500,000 for the drainage.
• Ditch repair nears $100 per foot. Funding better spent on new construction.
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EROSION PROGRESSION
Protect the surface from water damage = Vegetation
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SEAGRANT DITCHGUIDE
http://www.lakesuperiorstreams.org/stormwater/toolkit/contractor/resources/DitchGuide_SeaGrant.pdf
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FIND IT! FIX IT!
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REMINDER TO ENGINEERING DESIGNERS
Drainage is as important as any other element of the project!
Review Flow & Slope Velocities to prevent erosion!
What type of soil do you have = ERODABILITY!
Use erosion protection!
EROSION BLANKETS
ROCK ARMOR
VEGITATION PROTECTION
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Where can I get more information?
TxDOT Planner 800 687-4568
RAMP, Amy Slaughter 512 416-4519, [email protected]
Harry Lorton, 512 416-4535, [email protected]
PMP Guide; http://ftp.dot.state.tx.us/pub/txdot-info/avn/pmp-2000.pdf
FAA; https://www.faa.gov/regulations_policies/advisory_circulars/
o 150/5380-7B – Airport Pavement Management Programo 150/5380-6C – Maintenance of Airport Pavements
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QUESTIONS YOU HAVE?