Comparative Study of Road Construction Cost: Ranchi Hilly Area vs Normal Plain Area.

Comparative Study of Road Construction Cost: Ranchi Hilly Area vs Normal Plain Area.

Harsh Raj

B.Tech (NIT Warangal, Telangana)

Abstract: Road construction cost is greatly affected by the type of terrain where the road is built. In Ranchi hilly areas of Jharkhand, the land surface is uneven with slopes, rocks, and lateritic soil, which makes road construction more difficult and expensive compared to normal plain areas where the land is mostly flat. This study presents a comparative analysis of road construction costs between Ranchis hilly terrain and nearby plain regions. The research considers important cost factors such as earthwork, hill cutting, retaining walls, drainage structures, pavement layers, labor, and transportation of materials. Data is collected from local road construction projects, PWD Schedule of Rates, and field observations. The study shows that road construction in Ranchis hilly area requires additional work like slope cutting, slope protection, and retaining structures, which increases the overall project cost. The analysis indicates that the cost of road construction in hilly terrain is generally 1.5 to 2 times higher than in plain areas due to increased excavation, structural support, and transportation difficulties. The study highlights the importance of proper planning, efficient design, and use of local materials to reduce construction costs in hilly regions. The findings of this research can help engineers and planners in better estimation and cost management of road projects in plateau and hilly terrains.

Keywords: Road construction cost, Ranchi hilly area, plain area roads, earthwork cost, terrain effect, infrastructure planning.

INTRODUCTION:

Road transportation is very important for the development of local areas, as it improves connectivity, trade, and daily movement of people. The cost of road construction mainly depends on the terrain condition, such as whether the area is hilly or plain. In Ranchi district of Jharkhand, many roads pass through hilly and plateau regions such as RanchiPatratu Road, KankeOrmanjhi Road, and Angara area roads, where the terrain is uneven and rocky. In these areas, road construction requires hill cutting, slope stabilization, retaining walls, and proper drainage, which increases the construction cost. In contrast, nearby plain areas such as Ramgarh, parts of Hazaribagh, and Khunti plains have relatively flat land. Roads constructed in these regions require less earthwork and fewer supporting structures, making construction easier and less expensive. Therefore, comparing the road construction costs between Ranchis hilly roads and nearby plain area roads helps in understanding how terrain conditions influence project cost and planning of infrastructure development.

AIM OF THE STUDY:

The aim of this study is to compare the road construction cost between hilly area roads of Ranchi (such as RanchiPatratu Road, KankeOrmanjhi Road, and Angara roads) and nearby plain area roads like Ramgarh and Khunti region roads.This study focuses on understanding how terrain conditions, earthwork, drainage structures, and supporting structures affect the total construction cost. The research also aims to identify the main factors responsible for higher road construction costs in hilly areas compared to plain areas, and to provide useful information for better planning and cost estimation of road infrastructure projects.

Comparative Characteristics of Road Construction in Hilly and Plain Areas:

Table 1: Comparative Characteristics of Road Construction in Hilly and Plain Areas.

INTERPRETATION OF DATA:

The comparative analysis presented in Table 1 shows clear differences between road construction conditions in hilly areas of Ranchi (RanchiPatratu Road and KankeOrmanjhi Road) and plain area roads of Ramgarh and Khunti region. From the analysis, it is observed that hilly area roads require higher earthwork due to hill cutting and excavation in rocky terrain. In addition, supporting structures such as retaining walls, breast walls, and slope protection measures are necessary to maintain road stability and safety. These factors increase the overall construction cost in hilly areas. In contrast, plain area roads have relatively flat terrain, which reduces the requirement of heavy earth cutting and additional structural support. As a result, construction activities such as grading, compaction, and pavement laying are easier and less expensive. Therefore, the analysis indicates that terrain conditions play a significant role in determining road construction cost, with hilly areas generally requiring higher investment compared to plain areas.

DISCUSSION:

The research analysis comparing hilly area roads of Ranchi (RanchiPatratu Road and KankeOrmanjhi Road) with plain area roads of Ramgarh and Khunti region shows clear differences in road construction conditions and costs. From the study, it is observed that hilly terrain requires more complex construction activities such as hill cutting, excavation in rocky surfaces, and slope stabilization. These activities increase the earthwork quantity, machinery use, and overall construction cost. In addition, hilly roads require retaining walls, breast walls, and slope protection structures to maintain road safety and durability. On the other hand, plain area roads in Ramgarh and Khunti have relatively flat land, which reduces the need for heavy excavation and supporting structures. Construction activities such as grading, compaction, and pavement laying are easier and faster, resulting in lower construction costs. The study also shows that transportation of materials and equipment is more difficult in hilly areas due to slopes and curved road alignments, while in plain areas transportation is comparatively easier and more economical. Therefore, the discussion clearly indicates that terrain conditions have a significant impact on road construction cost, and the research findings help in better understanding cost differences between hilly and plain area road construction projects. These results can support better planning, budgeting, and infrastructure development in regions like Ranchi and surrounding districts.

ONCLUSION:

This study highlights that terrain characteristics strongly influence road construction planning and budgeting. The analysis of selected roads from Ranchi hilly areas and nearby plain regions shows that engineering requirements vary significantly between these terrains. The findings indicate that project estimation must consider terrain-specific factors such as slope conditions, structural needs, and accessibility. Proper understanding of these factors can help engineers and planners optimize design and improve cost efficiency in future road development projects.

DURATION OF STUDY:

This research work was carried out from 12 September 2023 to 11 December 2024 to analyze and compare the road construction costs in Ranchi hilly area roads (RanchiPatratu and KankeOrmanjhi) and plain area roads of Ramgarh and Khunti region. During this period, data collection, comparative analysis, and interpretation of construction cost factors were completed,

ACKNOWLEDGEMENT:

This study was carried out with the support and cooperation of RTBT Infrastructure Developer Pvt. Ltd., Ranchi (www.rtbtltd.com). The company provided valuable technical guidance, field support, and practical insights related to road construction activities during the course of this research. The author gratefully acknowledges the assistance and cooperation extended by the team of RTBT Infrastructure Developer Pvt. Ltd. in completing this study.

REFERENCES

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