DEVELOPMENT OF A CONSTRUCTION CONTROL PROFILOGRAPH

DUE TO AN INCREASING AWARENESS OF THE IMPORTANCE OF THE PAVEMENT ROUGHNESS AT THE TIME OF CONSTRUCTION, A PROFILOGRAPH FOR MEASURING CONSTRUCTION ROUGHNESS WAS DEVELOPED AND OBTAINED. THE PROFILOGRAPH UTILIZED WAS DESIGNED AND FABRICATED BY RAINHART COMPANY OF AUSTIN, TEXAS. THE PROFILOGRAPH FEATURED (1) TWELVE AVERAGING WHEELS ARRANGED IN A SYSTEMATIC METHOD, (2) EQUALLY SPACED AVERAGING WHEELS, BOTH LONGITUDINALLY AND TRANSVERSELY, (3) A RECORDER ESPECIALLY DESIGNED TO EMIT BOTH A GRAPHICAL PROFILE AND A DIGITAL ROUGHNESS INDEX NUMBER, AND (4) OUTRIGGER WHEELS ALLOWING THE PROFILOGRAPH TO BE TOWED TO VARIOUS TESTING LOCATIONS WITHOUT DISASSEMBLY. STUDIES OF THE INFLUENCE OF TEXTURE IN PAVEMENT ROUGHNESS WERE MADE LEADING TO A MODIFICATION IN THE PROFILOGRAPH RECORDING MECHANISM FOR A FILTER BAND. A 0.1-INCH FILTER BAND WAS UTILIZED TO REDUCE THE INFLUENCE OF TEXTURE IN PAVEMENT ROUGHNESS MEASUREMENTS. BASED ON FIELD STUDIES WITH THE 0.1-INCH FILTER BAND A PROFILE INDEX OF 26 INCHES PER MILE WAS DETERMINED AND A SUGGESTED SPECIFICATION WAS WRITTEN EMPLOYING A MAXIMUM "PROFILE INDEX" AND A MAXIMUM SINGLE PEAK DEVIATION. /AUTHOR/

  • Supplemental Notes:
    • Rept No 49-3F, 78 PP, 37 FIG, 7 TAB, 3 REF, 3 APP
  • Corporate Authors:

    Texas State Department of Highways & Public Transp

    11th and Brazos Streets
    Austin, TX  USA  78701
  • Authors:
    • Hankins, K D
    • Orellana, H
  • Publication Date: 1968-8

Subject/Index Terms

Filing Info

  • Accession Number: 00215215
  • Record Type: Publication
  • Files: TRIS, STATEDOT
  • Created Date: Jan 12 1970 12:00AM