Novelty Additional Layer Planning A. H. Nasution Road Norht Sumatera with Range with Hrodi Method

Condition of damaged road on A.H.Nasution road to Padang Bulan Which appears: subtle fractures, wavy bits, and descending road surface. All of these are caused by resistance factors from road users that can have an adverse impact on the development of the surrounding area. This paper describes the planning of road surface thickness. Process this plan uses Hot Rolled Overlay Design for Indonesia (HRODI), where the method and outline of planning activities consist of: Data collection and data analysis. The results show that the thickness of the surface layer (ply adjacent) of the path obtained varying results, ranging from 3 cm, 7 cm to 9 cm are mixed HRS (Hot Rolled Sheet) and ATBL (Asphalt Treated Base Leveling).

handle, improve, and maintain The state of the road. One such effort is the need for a thick design an overlay layer made of commonly used construction As a reference in determining the overlay thickness of the Hot Rolled Sheet (HRS) layer type to be used on the road. Based on these facts, it is necessary to do research Purpose: Designing the overlay of pavement construction on A.H.Nasution road which is made from Hot Rolled Sheet (HRS), using Hot Rolled Overlay Design For Indonesia (RODI).

Literature Review
The material used in the design of a new pavement with pavement HRODI method is an additional layer construction of road pavement, which is Equipped with design data as follows: 1). Design data required for the design of additional pavement layers These include: a). The condition of a road surface, b). Data on road surface conditions In the form of data from the assessment of surface coating conditions, comfort Vehicle and the weight of the damage. Accumulation of all conditions Road surface expressed in RCI (Road Condition Index) 2). Deflection data that occurs obtained from the examination of deflection conditions On the road surface using the Benkelman Beam (BB) tool.
3). Camber condition data from a cross-sectional road obtained through direct measurement in the field of the width of the road body and The transverse slope of the road body. 4). The traffic condition data on the design yng is the result of the survey Traffic volume, role of road, length and width of pavement, number of lanes, The age of the plan and the data on the growth rate of traffic on the road. All of the above design data are based on a survey result Along the A.H.Nasution road with a length of + 15 Km Types of pavement layers to be designed for additional layer thickness (overlay) With HRODI method is a mixture of hot rolled sheets asphalt type (HRS).
This type of HRS is a mixture of aggregates and asphalt, where aggregate Dominated by filler material (aggregate pass sieve No. 200). Some design parameters used in layered planning Additionally with the HRODI method is a reversed segment, surface condition Road (RCI), longitudinal cross-sectional chamber conditions, and cross-equivalent Cumulative traffic load over the life of the plan. Determination of point deflection (d), where the identification of the deflection value of Means of Benkelman does each point/station (d) measurement of deflection Beam (BB), and the calculation using Equation (1) follows:

D = ¯ d + 1,64 (s)
(2) Based on the value of additional layer thickness required, then it is done Planning of actual extra layer thickness in the field that is tailored to the type Layer pavement used. In this case, the primary type of overlay is used Is Hot Rolled Sheet (HRS) and if required greater than thickness 3 cm, then added layer Asphalt Treated Base Leveling (ATBL) below it Before the HRS layer.

Research Methods
The method used in this research is HRODI method that is A method of overlay planning correctly used for improvement projects International Journal of Civil Aviation ISSN 1943-3433 2018 The road in the Directorate General of Highways. This method is used for additional layers made Of the HRS type.
There are 2 (two) types of stages of activities undertaken in layered planning Additional in this writing are: 1). Collection of design data using secondary survey, i.e., retrieval Data already available to the relevant agencies, in this case, the Project Directors Road Improvement on moon cross roads starting from A.H.Nasution. The obtained data are subsequently reduced/processed for later use in the analysis The design of the new pavement roads in question.
2). Processing and analysis of design data which includes: determination of back deflection point (D), segment deflection (D), calculating the load equivalent amount The traffic axis, and the additional layer thickness.

Results and Discussion
The results of traffic planning data processing are shown in Table 1, andResults of data processing that expose the values of RCI, Camber, and deflection Segment (D) is presented in Fig.1. The RCI value along the road segment is 4, while the camber value is 2.0 except in the segment Km 57 + 000 -Km 58 + 000 and Km 60 + 000 -Km 62 + 000 which is worth 0 (zero). Segment deflection values vary from 0.799 cm to 2.966 cm.
The thickness of the additional layer of each road segment is shown on Fig. 2. The actual thickness design of the HRS and ATBL layers as indicated In FIG. 3, it is shown that the overlay thickness varies from a thickness of 3 cm, 7 cm Up to 9 cm. The thickness of 3 cm type of HRS layer dominates along the road. But on certain segments that is at Km. 57 + 000 -Km 58 + 000, and Km 60 + 000 -Km 62 + 000 thick overlay is 7 cm. While the thickness of 9 cm there On segments 61 + 000 -Km 62 + 000 and Km 67 + 500 -Km 68 + 100.  Figure 3. Additional layer design is required

Conclusion
From the result of planning of additional layer thickness (overlay) with HRODI Method Can be summarized as follows: 1). Thick layers for Jalan A.H.Nasution -Padang Bulan along + 15 Km varies from 3 cm, 7 cm to 9 cm. The extra layer thickness is dominated with a diameter of 3 cm.
2). Additional layer type of pavement with a diameter of 3 cm is the kind of HRS, while the thickness is greater than 3 cm to 9 cm used blend type HRS with ATBL.