WorldIndex database update 2018
Barna, Lynette A.; Daly, Steven F.; Jones, Kathleen F.; Gagnon, J. J. (John J.)
The primary software program for designing and evaluating pavements on military installations is the Pavement-Transportation Computer Assisted Structural Engineering (PCASE) program. PCASE, which is undergoing an update to version PCASE7, is an engineering tool for the design and evaluation of airfields and roadways using Department of Defense criteria. The WorldIndex database is a necessary component of PCASE and is integrated into it. The WorldIndex database internally supplies PCASE with the climate parameters required to determine the maximum depth of frost penetration. The database contains other temperature-based parameters used in structural evaluations. This report documents a recent update to the WorldIndex database that uses historical surface air-temperature observations from 1980 to 2017 at over 10,000 locations around the globe. The database contains 80 air-temperature-based parameters determined for each station, including the three parameters that PCASE requires to compute the maximum depth of frost penetration for pavement design in cold regions: the average annual air temperature, the average freezing degree-days, and the mean length of the freezing season. The report concludes with recommendations for future updates.
Cold Regions Research and Engineering Laboratory (U.S.)Engineer Research and Development Center (U.S.)
Atmospheric temperature; Climate; Degree days; Military bases; Pavements; Pavements--Effect of temperature on; Pavements--Frost damage; Pavement-Transportation Computer Assisted Structural Engineering (PCASE); Thawing; WorldIndex database
Technical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/CRREL TR-19-13
Approved for Public Release; Distribution is Unlimited