ASTM_E_1274_-_03_2012.pdf

Designation:E127403(Reapproved 2012)Standard Test Method forMeasuring Pavement Roughness Using a Profilograph1This standard is issued under the fixed designation E1274;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the measurement of pavementroughness using an articulated multi-wheeled profilograph atleast 23 ft(7 m)long(Fig.1 is typical).1.2 This test method utilizes a surface record made bymoving the profilograph longitudinally over the pavement atless than 3 mph(5 km/hr).The record is analyzed to determinethe rate of roughness and to identify bumps that exceed aspecified threshold.1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4This standard does not purport to address all of thesafety problems,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.See Section 6 forspecific hazard statement.2.Referenced Documents2.1 ASTM Adjuncts:Blueprint of California Profilograph Assembly(18 blue-prints)23.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 blanking banda band of uniform height with itslongitudinal center positioned optimally between the highs andlows of the surface record depicting at least 100 ft(30 m)ofpavement(see Fig.2).3.1.2 cutoff heighta specified distance of a high on thesurface record from a chord representing 25 ft(7.5 m)on thelongitudinal scale.The chord may represent less than 25 ft(7.5m)if it is from the lows on each side of the high(see Fig.2).3.1.3 rate of roughnesssum of the roughness divided bythe longitudinal distance covered by the blanking band.3.1.4 roughnessheight of each continuous scallop roundedto the nearest 0.05 in.(1 mm),except those less than 0.03 in.(0.8 mm)vertically and 2 ft(0.6 m)longitudinally.3.1.5 scallopsexcursions of the surface record above andbelow the blanking band(see Fig.2).4.Significance and Use4.1 This test method provides a means for measuring theroughness of new or rehabilitated pavements.Results maydiffer between profilographs of different designs and thereforewill not necessarily agree with roughness measurements byother profilographs or other roughness-measuring equipment.5.Apparatus5.1 Profilographs:5.1.1 With Uniformly Spaced Wheelsa reference platformcomprised of dollies articulated by rigid members or trusses sothat all the wheels are supporting the profilograph.There mustbe at least twelve reference platform wheels,and the axes ofthese wheels must be uniformly spaced throughout the effec-tive length of the profilograph.3The effective length must be atleast 23 ft(7 m)long.A surface sensing wheel and recordershall be located at the center of the reference platform.Thediameter of the surface sensing wheel shall be at least 6 in.(150 mm).If the recorder is graphic,its scales shall be 1:1vertically and 1:300 longitudinally(1 in.=25 ft).If therecorder is digital(optional analog display must have the samescales as the graphic recorder),it must sample 5 times/longitudinal inch of travel and record the relative height of thesurface to at least the nearest 0.01 in.(0.25 mm).5.1.2 With Non-Uniformly Spaced Wheels It shall be asdescribed in 5.1.1,except the axes of the reference-platformwheels are not uniformly spaced but are at least 1 ft(0.3 m)apart so no two wheels cross the same bump at the same time.The recorder can be located elsewhere,but surface sensingequipment must be located at the center of the reference1This test method is under the jurisdiction of ASTM Committee E17 on Vehicle-Pavement Systems and is the direct responsibility of Subcommittee E17.31 onMethods for Measuring Profile and Roughness.Current edition approved Dec.1,2012.Published December 2012.Originallyapproved in 1988.Last previous edition approved in 2008 as E1274 03(2008).DOI:10.1520/E1274-03R08.2Available from ASTM International Headquarters.Order Adjunct No.ADJE1274.3Hankins,Kenneth D.,“Construction Control Profilograph Principles,”Re-search Report 49-1,Texas Highway Department,June 1967.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 platform.A common apparatus with non-uniformly spacedwheels is the California profilograph(see 2.1).5.1.3 There are differences in frequency responses betweenprofilographs with uniformly spaced wheels and profilographswith non-uniformly spaced wheels(see Fig.3).5.2 Blanking Band Template(optional)Approximately2-in.(50-mm)wide clear plastic strip at least 4 in.(100 mm)long.A commo