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About This Item

 

Full Description

The rod and level can be used to accurately measure the profile of a pavement. The profile data can be used to evaluate the roughness of the pavement by computing a roughness index such as the International Roughness Index (IRI) or to evaluate effects such as frost heave or swelling of soils. In computing roughness indices, only the relative elevations and not the absolute elevations are needed. The guidelines in this standard practice can be applied to conventional survey equipment such as an optical level and graduated staff, which require the readings to be manually recorded, as well as automated equipment that is capable of automatically storing the measured data.

 

Document History

  1. AASHTO R 40-10 (2022)

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    Standard Practice for Measuring Pavement Profile Using a Rod and Level

    • Most Recent
  2. AASHTO R 40-05


    Standard Practice for Measuring Pavement Profile Using a Rod and Level

    • Historical Version