Design of Rigid pavement for new construction - USING AASHTO
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Civil Engineering
Design of Rigid pavement for new construction - USING AASHTOMETHOD
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Design procedureThe design procedure for rigid pavement by AASHTO involvessolving an empirical equation of similar behavior with that of theone used for flexible pavement Here the thickness of the concreteslab is the only value that is obtained at the end of theiteration The empirical equation has the following formWhere the variables are as followsW18 predicted number of 18 kip traffic loadapplication ESALSo combined standard error of trafficpredictionPSI serviceability change during the designperiodpt final serviceability of pavementSc modulus of rupture of PCCCd drainage coefficientJ load transfer coefficientEc elastic modulus of PCCK modulus of sub grade reactionD slab thicknessFinal Serviceability Index pt It refers tothe final serviceability index when the pavement is thought to havefinished its service period Typical values range from 15 to 3depending on the use of the roadModulus of Rupture of PCC Sc Modulus ofRupture of concrete is a measure of the flexural strength of theconcrete as determined by breaking concrete beam
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