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The trend of the flow of traffic will greatly support the economic growth of an area such as Humbang Hasundutan district especially in the Gonting Bulu road section - Simangaronsang, Doloksanggul district. The study aims to know the parameters for structural improvement on Gonting Bulu - Simangaronsang road in Doloksanggul Subdistrict, Humbang Hasundutan Regency from STA 0+000 - STA 1+984. The parameters in this case include the pavament layer thickness. The methods used are the Manual Method for Processing Road Design 2017 and the 1993 AASHTO Method for crackdown. Based on the calculations that have been carried out, the results are obtained in the 2017 Road Pavement Design Manual for Surface Layers with a thickness of 10 cm, Class A Foundation Layers with a thickness of 40 cm, and Selected Embankments with a thickness of 15 cm. Whereas in the 1993 AASHTO method, namely the Surface Layer with a thickness of 11 cm, Class A Foundation Layer with a thickness of 20 cm, Class B Foundation Layer with a thickness of 26 cm. And on the Detail Engineering Design (DED) planning data, namely Surface Layer with a thickness of 10 cm, Class A Foundation Layer with a thickness of 20 cm, Class B Foundation Layer with a thickness of 30 cm and Preferred Stockpiles with a thickness of 10 cm. The most effective and economical pavement thickness planning method that still meets the requirements and standards of road pavement planning is designing using the AASHTO 1993 method. This is due to the fact that the road strength is met, and the layer thickness is thinner, which minimizes the use of costs for both material and non-material.
Keywords: AASHTO, Bina Marga, New Road, Flexible Pavement
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