Re-Design Of Nablus-Deir Sharaf Road
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Date
2013
Authors
Enas Saleh
Haneen Hetti
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Abstract
Transportation engineering is the application of technology and scientific principles to the planning, functional design, operation and management of facilities for any mode of transportation in order to provide for the safe, rapid, comfortable, convenient, economical, and environmentally compatible movement of people and goods. Transportation engineering, as practiced by civil engineers, primarily involves planning, design, construction, maintenance, and operation of transportation facilities. The major facilities in Palestine are related to highway transportation. The design aspect of transport engineering include the sizing of transportation facilities (how many lanes or how much capacity the facility has), determining the materials and thickness used in pavement designing the geometry (vertical and horizontal alignment) of the roadway. Every country has some organization providing the guidelines and specifications for design and operation of transport systems. Before making any sort of planning a design, the Engineer must take an account of the available information database of the area.Nablus city is a major city in Palestine. It lies in the north of the West Bank. Nablus connects the north governorates of Jenin, Tulkarm, Qalqilya with governorates in the south includes Ramallah, Jerusalem and Hebron. So we can say that the city of Nablus is a forum for other cities, making it a center for gathering people and this leads to increased population density, this leads to increased demand for transport and thus leads to increased congestion in the city.This project deals with the geometric design of Nablus-Deir Sharf road. This road connects the city with nearby towns and villages surrounding Nablus from the north and the west. Geometric design is interested in geometry aspects of the road, such as ROW, width of the lane, and horizontal and vertical curves design. Study AreaNablus-Deir Sharf road is a major road that connects Nablus city and Deir Sharf village and then branches to Tulkrem and Jenin. The ROW is 30m and length of the road is 7 km starting from Wadi At-Tuffah intersection and ending at Deir Sharf intersection. The road includes four major intersections; Deir Sharf, Quseen, Sheikh Mohammed bin Rashed Al-Maktoom and Tunis intersections. It has two lanes without median. Except for the most eastern segment, the road which was construct long time ago contains many pavement defects including pot holes and cracks that may cause major accidents. It lacks parking lane at commercial and residential sections. The region suffers from drainage.Nablus-Deir Sharf Road is a major road that connects Nablus city and Deir Sharf village and then branches to Tulkrem and Jenin. The ROW is 30m and length of the road is 7 km starting from Wadi At-Tuffah intersection and ending at Deir Sharf intersection. The road includes four major intersections; Deir Sharf, Quseen, Sheikh Mohammed bin Rashed Al-Maktoom and Tunis intersections. It has two lanes without median. Except for the most eastern segment, the road which was constructed long time ago has many pavement defects including pot holes and cracks that may cause major accidents. It lacks parking lane at commercial and residential sections. The region suffers from drainage.Nablus-Deir Sharf Road is a very important road as the national and regional levels.This project aims to achieve the following objectives:- Evaluate the existing geometric and show the pavement condition.- Analyze the traffic volumes and to check adequate number of lane.- Redesign the geometry and traffic aspects of the road design.ConclusionsAfter collecting data and finding all information about the existing road sections and intersections, and then analyzing them, the results to be taken into consideration in this project include:--The existing design of the road 2 lanes does not satisfy the design requirements for traffic. After making calculations for the design life of 20 years; we design the road to have 4 lanes, two lanes in each direction.-The existing intersections design, these are found not to be suitable, since the design contributes to safety hazards. In general, there are no proper islands, channelization, signs, insufficient lane widths and restricted sight distances at a certain regions. It is found that a traffic signal is warranted at Tunis intersection. -The pavement is badly deteriorated; the existing pavement conditions are not suitable for at most all segments in the roadway. However, the hole road way will be reconstructed to have a four lane road.RecommendationsWe recommend the following:-To perform detailed geometric design of the road.-To implement the design of the road, the design already developed on this study-To study extension of the road Tulkrem and Anabta As a four lane highway.