Determination of k for rigid pavement with cakar ayam system using heavy weight deflectometer (case study : Soekarno-Hatta Airport)

ABSTRAK One of the important parameter in determining the Aircraft Classification Number/Paement Classification Number (ACN/PCN) of rigid payement is the modulus of subgrade reaction (k). The current popular way to find the site modulus of subgrade reaction under the rigid pavement is by using the non destructive test with HWD (Heavy Weight Deflectometer). However the program nused to analyzedanalyze the collected data from the site is 0111y applicable for cOllventiol1al rigid pcn\u27emellt. This paper disclI.ue.f the necessary step-by-step procedure to apply the HWD using its accompanied program called ELMOD4 to calculate k ill the study of Soekamo-Hatta Airport, where the rigid pavement uses Cakar Ayam system. From thl\u27 .fwdy it i.\u27 .mggested that the k value of the .mbgrade i.f /5 MNlmJ. Therefore the suhgrade category of the Soekamo. Hattll Airport is D according to the ACNIPCN method Keywords: Pavement, sistem cakar aya