PLANNING OF FLEXIBLE PAVEMENT THICKNESS FOR NEW RUNWAY IN SUPADIO INTERNATIONAL AIRPORT WITH FEDERAL AVIATION ADMINISTRATION METHOD

Abstract

The runway is one component in the airport system, its performance greatly affects
all airport operational activities. Anticipating the increase in services from the
capacity of the number of passengers, it is necessary to build a new runway. In this
study, analyze the forecast of the number of movements with the trend analysis
method and the percent forecast method from PT. Angkasa Pura II, field subgrade
CBR, new runway capacity and planning year, and new runway pavement using the
Federal Aviation Administration (FAA) method and FAARFIELD 1.42 software.
Based on the analysis results, the field subgrade CBR was 0.38% < 3%, then it was
stabilized using selected soil (CBR 20.523%) with a thickness of 60 cm. The forecast
results with both methods show that the trend analysis method is used because the
time is earlier than other methods, namely in 2027 with the existing runway capacity
at Supadio International Airport of 54 operations/hour with a maximum capacity of
51 operations/hour. The results of the runway flexible pavement thickness using the
FAA method manually obtained a total pavement thickness of 42” (107 cm), which
consists of 4”(10 cm) Surface Course, 12”(31 cm) Base Course, and 26”(66 cm)
Subbase Course, while the FAARFIELD 1.42 software has a total pavement
thickness of 30.43”(77 cm), which consists of 4”(10 cm) Surface Course, 5” (13 cm)
Base Course, and 21.43”(54 cm) Subbase Courses.