inspecting paved surfaces · t-87-pvd . runways and taxiways . drive both sides of taxiway c. l. 58...

INSPECTING PAVED SURFACES

T-1-PVD

ICAO/FAA Airport Certification Inspectors Workshop

Caribbean Region St Maarten

June 11-15, 2012

PAVED SURFACES AND SAFETY AREAS

Paved surface

OBJECTIVES

To review the criteria for evaluating developing conditions and for inspecting

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PASER Pavement Surface Evaluation & Rating

System

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AC 150/5320-17 Appendix 2 It is a pavement rating system that is meant to be a source of information for rating pavement under the airport safety data program. The manuals will assist airport managers in understanding the surface condition of airfield pavements.

PASER PAVEMENT EVALUATION

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AC 150/5320-17 Appendix 2

Rate the condition that represents the majority of the pavement

Assess drainage conditions


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Inspectors can use PASER criteria to continuously evaluate pavement conditions Objective of PASER is to rate the condition that represents the majority of the pavement

Small or isolated conditions should not influence the rating.


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Rating criteria and inventory sheet contained in the PASER manual

NEW PAVEMENT CRITERIA

Adequate crown Skid resistant Structurally sound Grade variation less than 1/4 inch in 16 feet No foreign objects and debris (FOD) Pavement lips less than 1 1/2 inches

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CONCRETE PAVEMENT DEFECTS

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DEFECTS EXAMPLES Surface defects Polishing

Map cracking Pop-outs Scaling Spalling

Joints Cracks parallel to joints Joint deterioration


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DEFECTS EXAMPLES Cracks Slab cracks

D-cracks Corner cracks Meander cracks Manhole and inlet cracks

Distortion Settlement or heave Blowups Faulting Utility repairs, patches and potholes

SCALING


SURFACE DEFECTS

SPALLING

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SLAB CRACKS


CRACKS

D - CRACKS

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SLAB CRACKS

CONCRETE PAVEMENT DEFECTS CRACKS

D - CRACKS

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SETTLEMENT/ HEAVE

CONCRETE PAVEMENT DEFECTS DISTORTION

BLOWUP

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CORNER CRACKS

CONCRETE PAVEMENT DEFECTS CRACKS

MEANDER CRACKS

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ASPHALT PAVEMENT DEFECTS

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DEFECTS EXAMPLES Surface defects Raveling

Polishing Flushing

Surface deformation Rutting Distortion

ASPHALT PAVEMENT DEFECTS

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DEFECTS EXAMPLES Cracks Thermal cracks

Reflection cracks Slippage cracks Joint/edge cracks Block cracks Alligator cracks

Patches and potholes

RAVELING

ASPHALT PAVEMENT DEFECTS SURFACE DEFECTS

POLISHING

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FLUSHING

ASPHALT PAVEMENT DEFECTS SURFACE DEFECTS

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RUTTING

ASPHALT PAVEMENT DEFECTS SURFACE DEFORMATION

DISTORTION

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THERMAL CRACKS

ASPHALT PAVEMENT DEFECTS CRACKS

REFLECTION CRACKS

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SLIPPAGE CRACKS


JOINT/EDGE CRACKS

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BLOCK CRACKS


ALLIGATOR CRACKS

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Loss of directional control Reduced braking and/or hydroplaning

EFFECTS OF PAVEMENT FAILURE

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Damage from foreign objects and debris (FOD)

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Structural damage

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PAVED SURFACE INSPECTION CRITERIA

Certificate holder must maintain and promptly repair each runway, taxiway, loading ramp and parking area available for air carrier use

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Pavement edges must not exceed 3” between

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SECTION 139.305(a)(1)

Abutting pavement sections

Pavement and abutting areas


Holes over 5” across may not

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Exceed 3” depth

Slope 45° or more

EXAMPLE

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PAVEMENT NOT DESIGNED FOR THE WEIGHT OF THE AIRCRAFT


Pavement must be free of cracks and surface variations that could impair air carrier aircraft directional control

Any crack or surface deterioration that produces loose aggregate or other contaminants should be repaired immediately

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EXAMPLE 31


Remove promptly and as completely as possible all

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Mud

Dirt

Sand

Debris

Loose aggregate

Foreign objects

Rubber deposits

Other contaminants

Does not apply to snow, ice, deicing materials

FOD

RUBBER BUILDUP

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Contaminants and FOD can cause

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Aircraft fuselage and control surface damage from foreign objects

Lost of aircraft braking action due to surface slipperiness (poor skid resistance) (rubber build up)


Remove as soon as possible chemical solvents used to clean any movement area

Does not apply to snow, ice, deicing materials

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Chemical solvents that remain on the runway can cause

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Reduced braking action due to poor skid resistance

Potential aircraft corrosion


Pavement shall be sufficiently drained and free of depressions to prevent ponding that

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Obscures marking

Impairs safe aircraft operations


Ponding can result

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Reduced braking action

Aircraft gear damage

Hydroplanning

INSPECTION CRITERIA and TIPS

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RUNWAYS and Taxiways

The inspector must refer to all design and minimum standards when inspecting paved surfaces. An inspection is not just for failed conditions, it is also for potential hazards or conditions that could become potentially hazardous.

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RUNWAYS and TAXIWAYS

Drive runway CL and both edges 48 KM or less

LOOK FOR:

Surface condition and defects: PASER criteria FOD: Mud, dirt, foreign objects Rubber buildup Depressions ACM requirements Pavement design standards Standing water

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T-87-PVD

Runways and Taxiways

Drive both sides of taxiway CL

58 KM or less

LOOK FOR:

Pavement lips Shoulder and blast pad

Edge damming

Erosion

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T-87-PVD

TAXIWAYS AND APRONS

Drive both sides of taxiway CL

48 KM or less

LOOK FOR:

Surface conditions (PASER criteria) FOD: Mud, dirt and foreign objects

Pavement lips

Edge damming

Part 139 criteria

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T-87-PVD

Inspecting Paved Surfaces

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Questions?

inspecting paved surfaces · t-87-pvd . runways and taxiways . drive both sides of taxiway c. l. 58...

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