Engineering College Civil Engineering Department Jenin – Tubas Highway Design Transportation Engineering Graduation Project Supervisor : Dr. Khaled Al-Sahili Prepared By : Emad Abu Hussein Mohammad Abu Al-Rob Imran Khader An-Najah National University
An-Najah National University. Engineering College Civil Engineering Department. Jenin – Tubas Highway Design Transportation Engineering Graduation Project . Supervisor : Dr. Khaled Al-Sahili Prepared By : Emad Abu Hussein Mohammad Abu Al-Rob Imran Khader. Introduction. - PowerPoint PPT Presentation
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Road Description Jenin-Tubas Highway is a major road that connects the northern districts of Jenin and Tubas, with a length about 16 km.
The highway starts from Jenin City at Jannat Park Intersection, Al-Kfair Village, Aqqaba Village
and ending at the north of Tubas City.
The following Google Earth picture describes the study case of the highway.
1
Introduction
Objectives
1. Geometric design using the AASHTO standards:
a. Horizontal alignment
b. Vertical alignment
c. Cross sections
2. Providing the design details.
3. Capacity analysis and determining the number of lanes.
4. Pavement design.
5. Traffic singing and marking using local standards.
6. Bill of quantities
3
Traffic Studies
SummaryPeak Hour 2:00 PM – 3:00
PMPeak Hour volume
686 Veh/hr
Peak Hour Factor
0.907
A traffic counting is conducted(At Al-Shuhadah Intersection Eastern Leg)
4
Design Hourly Volume (DHV)
1239 Veh/hr
Average Daily Traffic (ADT)
17700 Veh/day
Traffic Studies
5
Design control and criteria
Functional classificationA Rural principal Arterial Highway.
Design VehicleWB-15 is chosen to be the design vehicle.
Design SpeedDesign speed is between 65 to 110 km/hr
So, the design speed is chosen to be 80 Km/hr
6
Design control and criteria
Level of Service
The appropriate LOS is C
LOS check The result LOS
Decision
Two Lanes D Not Acceptable
Four Lanes
B AcceptableTherefore, the recommendation is four-lane highway, two lanes in each direction.
7
Pavement Design
Layer
CBR
Mr Ib/in2 a m
SB 40 17,000 0.12 0.9
BC 80 28,000 0.13 0.9
AS 450,000 0.44
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Pavement Design
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The resultsThe layer Asphal
tBase coarse
Sub base
SN 2.3 2.8 2.2The depth inch
5.5 4.5 -5.5Negative result then we don’t need to use sub base layer.The main structure number , SN = a1 D1+a2D2m2
=0.44*5.5+0.13*4.5*0.9 = 2.95Depth of the pavement(D1) is 3 inch (8 cm) Depth of the base course (D2) is 14 inch ( 35 cm); So use( 40 cm) After modification
The layer Asphalt
Base coarse
The depth Inch (cm)
3(8) 16(40)
Pavement Design
10
Highway Geometric
Design Criteria for Horizontal Curves Super elevation It is assumed to be 10 % Radius As design speed equal 80 km/hr the
superelevation equal 10% Rmin = 210 m. Design Criteria for Vertical Curves Terrain the terrain is mountainous. Grade
max. grade = 7 %.12
The cross section elements are designed based on AASHTO recommendations:
1.Lanes : 3.6 m for each2.Shoulder: 3 m for each3.Median: 2 m4.Cross slopes: 2% (for traveled lanes) and 4%