Post on 11-Feb-2016
description
Engineering CollegeCivil Engineering Department
Jenin – Tubas Highway DesignTransportation Engineering Graduation Project
Supervisor : Dr. Khaled Al-Sahili
Prepared By :Emad Abu Hussein
Mohammad Abu Al-RobImran Khader
An-Najah National University
Introduction
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.
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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
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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)
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Design Hourly Volume (DHV)
1239 Veh/hr
Average Daily Traffic (ADT)
17700 Veh/day
Traffic Studies
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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
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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.
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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
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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%
for shoulders.5.Side slopes: 1:2 Cross Section Details1.Guard rails & Retaining walls2.Ditches3.Culverts
Highway Geometric
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Highway Geometric
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Intersection design
There are several intersections in this highway. The three main intersections are:
1. Jannat Park intersection 2. Al-Zababda intersection 3. North Tubas intersectionThe intersections is designed according to AASHTO
(2004) Standards.
A Sample of intersection deign is shown:
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Intersection design
Item Unit
Quantity
Unit price ($)
Total price($)
cut m3 1,254,000
4 5,016,000
fill m3 682,300 10 6,823,000earth works cost 11,839,000
base-course m2 133,600 28 3,740,800base course cost 3,740,800
prime coat m2 230,400 0.9 207,3608 cm thickness
asphaltm2 226,350 10 2,263,500
bituminous construction cost 2,470,860traffic signs No
.132 100 13,200
curbstones m 32,000 25 800,000White Traffic
Markingm 8,000 2.7 21,600
Yellow Traffic Marking
m 64,000 2.7 172,800
Guard Rail m 6,500 120 780,000Ditch m 20,150 19 382,900
Retaining Wall m 6,350 300 1,905,000miscellaneous works cost 4,075,500
Total Cost 22,126,160 ($)
BOQ and Cost
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Recommendations
The full 30m right of way should be used to upgrade the number of lanes.
Four travel lanes are suggested (two in each direction).
The road needs continuous maintenance.
Drainage system should be improved .
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