The Geometric Design of Horizontal Curves Using The Autocad Civil 3D® Method: A Case Study of Trans Flores Roads

Abstract

In general, the geometric planning of roads is done manually using drawing tools and mathematical techniques. When done manually, geometric design is complicated, time-consuming, and prone to errors. Therefore, this study will use AutoCAD Civil 3D®. This study aims to redesign the Trans Flores road because of the frequent accidents found on curves and climbs and the current road drops on the Trans Flores road. This study will use research methods using secondary data and qualitative research methods. When designing geometric roads using AutoCAD Civil 3D®, data from Google Maps, Google Earth, and Global Mapping is also required. This research will focus on the 3.5 km of road traffic starting from Sta 0+000 to Sta 3+500. The result of this study is that corners P1-P4 are planned with the type of Bend S-C-S. By using AutoCAD Civil 3D®, this research can be completed quickly and accurately.

Planning of Geometric Road Bend Using Spiral Circle Spiral Types (Case Study at STA. 11.800 to STA. 12.200) Jarak Village Roads in Jombang Regency, Indonesia

“…Speed Design amount on certain road sections can be reduced, with the condition that the reduction cannot br more than 20 km/hour [13]. Spiral -Circle -Spiral is a bend consisting of one circular arc and two spiral arcs or intermediate arcs [14]. To plan a even line, the primary thing that must be done is to decide the work and course of the street, which is based on the nature and volume of activity that passes through the street and the landscape conditions [15]..…”