01518685

Component

https://doi.org/10.3141/2433-06

This study addressed the need for more detailed weather information in the context of pavement design with the Mechanistic–Empirical Pavement Design Guide from weather information available for Chile. An initial database was developed with the available hourly data in the country, and the sensitivity of distress predictions for Chilean weather was studied. Because of the limited availability of hourly climatic data, different methods were proposed for completing the missing data. As their inputs, the developed models used weather information that was more generally available. A sinusoidal–exponential model was used for the minimum and maximum daily temperature. An exponential model for hourly humidity based on maximum and minimum daily humidity was also used. Linear interpolation between the available hours with data for wind speed and cloud cover was sufficient to complete the hourly information for these variables. The precision of the distress predictions with these models proved to be accurate compared with the predictions with actual hourly weather data. The models are being successfully used to expand the number of available weather stations for pavement design in Chile. The models are also useful for validating the existing weather stations and detecting inaccuracies and errors in the recorded hourly data.

01552761

14-4926

English

pp 48–57

2014

Transportation Research Record: Journal of the Transportation Research Board

9780309295215

Print

Figures (4) ; Maps; References (38) ; Tables (2)

Information processing; Mechanistic-empirical pavement design; Pavement distress; Weather and climate; Weather conditions

Chile

Data and Information Technology; Design; Geotechnology; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways

TRIS, TRB, ATRI

Jan 27 2014 3:44PM

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