Engineering Appendix A Airfield Runway Friction Testing.docx

Engineering Appendix A

AIRFIELD RUNWAY FRICTION TESTING

DESCRIPTION

A-1.1 This item consists of furnishing all labor, materials, and equipment required for the complete testing of runway surfaces for friction characteristics. All testing and analysis shall be accomplished in accordance with FAA Advisory Circular 150/5320-12C MEASUREMENT, CONSTRUCTION, AND MAINTENANCE OF SKID-RESISTANT AIRPORT PAVEMENT SURFACES and Engineering Technical Letter (ETL) 04-10 (Change 1): Determining the Need for Runway Rubber Removal, except as modified below.

MATERIALS AND EQUIPMENT

A-2.1 The Contractor shall only use self-wetting Certified Friction Measuring Equipment (CFME) that appears on the FAA Qualified Product List in Appendix 4 of AC 150/5320-12C. The list below represents the FAA Qualified Product list from Change 8 of AC 150/5320-12C and does not necessarily represent the most current change to the Advisory Circular.

AIRPORT SURFACE FRICTION TESTER INDUSTRIES AB

AIRPORT SURFACE FRICTION TESTER

Metallgatan 7 +46 0 411 651 00 271 39 Ystad, Sweden FAX +46 0 411 190 12 SWEDEN email: sales@asft.se

AIRPORT TECHNOLOGY USA SAFEGATE FRICTION TESTER

NO LONGER AVAILABLE

DOUGLAS EQUIPMENT LTD MU METER

Douglas House, Village Road +44 1242 531219 Arle, Cheltenham FAX +44 1242 571667 Gloucestershire email: spd@douglas-equipment.com

GL51 0AB UK

DYNATEST CONSULTING, INC., RUNWAY FRICTION TESTER (6810, 6850 and 6875)

(FORMERLY K.J. LAW ENGINEERS, INC.) +(904) 964-3777

13952 US Highway 301 South FAX +(904) 964-3749 Starke, FL 32091

FINDLAY, IRVINE, LTD. GRIPTESTER FRICTION TESTER

42-44 Bog Road, Penicuik +44 1968 672111 Midlothian EH 26 9 BU FAX +44 1968 671237 SCOTLAND www.findlayirvine.com

INTERTECH ENGINEERING TATRA FRICTION TESTER

NO LONGER AVAILABLE

NEUBERT AERO CORP. NAC DYNAMIC FRICTION TESTER

4105 West De Leon Street +(727) 538-8744 Tampa, FL 33609 FAX +(727) 538-8765 email: info@airportnac.com www.airportnac.com

NORSEMETER RUNAR RUNWAY ANALYSER AND RECORDER

P. O. Box 125 +47 23 20 1270 Bogstadvien FAX +47 23 20 1271 0323 0310

NORWAY

PATRIA VAMMAS AEC BV-11 SKIDDOMETER

P.O. Box 18 Vammaksentie +358 20 4694041 FIN-38201 Vammala FAX +358 20 4694250 FINLAND www.patria.fi

SCANDINAVIAN AIRPORT AND ROAD SYSTEMS AB SARSYS FRICTION TESTER (SFT)

Box 31, Sjoviksvagen 4 SARSYS TRAILER FRICTION TESTER (STFT) 23121 Trelleborg SARSYS SUV FRICTION TESTER (SSUV)

SWEDEN +46 410 46 110

FAX +46 410 46 111

US/Canada Tradewind Scientific Ltd. www.tradewindscientific.com

EXECUTION

A-3.1 OPERATIONS ON THE AIRFIELD.

A-3.1.1 Airfield Access. Work will be performed in the controlled zones of the base or the airfield. All access to or through the base shall be coordinated with the CO. All access to or through the airfield shall be coordinated with CO and/or the Airfield Manager.

A-3.1.1.1 When within the radio-controlled areas of the airfield, the Contractor shall maintain continuous verbal and visual contact with the control tower. The Contractor shall verbally inform the control tower and the Airfield Manager when the work has been completed and all equipment, labor and materials have been removed from the airfield.

A-3.2 EQUIPMENT CALIBRATION.

A-3.2.1 All CFME should be checked for calibration within tolerances given by the manufacturer before conducting friction surveys. CFME furnished with self-wetting systems should be calibrated periodically to assure that the water flow rate is correct and that the amount of water produced for the required water depth is consistent and applied evenly in front of the friction measuring wheel(s) for all test speeds.

A-3.3 CONDUCTING FRICTION EVALUATIONS.

A-3.3.1 Contractor shall visually inspect the runway prior to testing to check for evidence of rubber accumulation, aggregate polishing or groove deterioration. All observations shall be included in the test report.

A-3.3.2 On runways with paved overruns and semi-flush approach light fixtures and where practical, the contractor shall use the overruns to accelerate and decelerate, allowing for testing at 40 mph or 60 mph for nearly the full length of the runway.

A-3.3.3 Conduct friction tests in the predominant aircraft wheel path, where rubber accumulation is heaviest at both 40 mph and 60 mph. Unless there is a noticeable difference between the left and right side of centerline, only one side of centerline needs to be tested.

A-3.3.4 For a comparison to uncontaminated/untrafficked pavement, conduct friction tests on the outer edge of the runway at both 40 mph and 60 mph.

A-3.4 REPORT.

A-3.4.1 The Contractor shall provide a clear, concise report of the test results. The report shall include graphical traces of the measured friction for all tests completed. Analysis shall calculate the average Mu value for all tests in 500-ft segments and highlight areas of the pavement that do not meet the minimum or maintenance planning levels as defined in AC 150/5320-12C. Contractor shall include recommendations for improving friction characteristics in any areas that are found to be deficient. Contractor shall provide the report within the contract performance period.

METHOD OF MEASUREMENT

A-4.1 The quantity of Runway Friction Testing to be paid for under this item shall be each runway tested in accordance with this specification, report prepared, completed and accepted.

END ITEM AIRFIELD RUNWAY FRICTION TESTING