Overlay thickness evaluation based on Indonesian manual road design and shell pavement design method

Abstract

Brebes Regency is one of the areas crossed by the north coast road (Pantura). This road is very important and forms the basis of land transportation traffic on the island of Java. We often encounter traffic jams on this road because it is part of a national road along the northern side of the island of Java. There are several treatments that are usually carried out to repair roads that have been damaged, one of which is the addition of a thick layer or overlay. Therefore, researchers conducted an analysis study of the added layer thickness (overlay) on the road to find out and analyze the results of the 2017 Road Pavement Design Manual overlay method and the Shell Pavment Design Method (SPDM) program method. In this study, the data collected were primary data and secondary data, namely road profiles obtained directly from field observations, average daily traffic data (LHR) and Falling Weight Deflectometer (FWD). The results of the overlay calculation using MDP 2017 obtained an overlay value of 50 mm and the SPDM program was 46 mm. An effective method in terms of data requirements, calculations and time is the SPDM program because when it is used it can be easily and calculated automatically in the program, whereas if you use MDP 2017 the calculations are still manual and the determination of the overlay thickness uses a graphic that accurately adjusts the user's foresight and will affect the results of the overlay calculation.