Civil Engineering Department
Design of Nablus Tulkarm Highway
Prepared by
Ahmed Mohammed MustafaAnas Zeyad Belbeasi
Under the Supervision of
Dr. Khaled Al Sahili
Nablus- PalestineDec. 2010
Apr 20, 20231Design of Nablus Tulkarm Highway
Introduction
Apr 20, 2023Design of Nablus Tulkarm Highway
2
Road Description Nablus Tulkarm Highway is a major road that
connects two of the major Palestinian cities; Nablus and Tulkarm, with a length about 27 km.
The study case of the road is located between two Israeli checkpoints; Enab and Shefi Shomron checkpoints. with length is about 5.5 km.
The following Google Earth picture describe the study case of the road.
Apr 20, 20233Design of Nablus Tulkarm Highway
objectives
Apr 20, 2023Design of Nablus Tulkarm Highway
4
1) Evaluation of the exiting design2) Redesign and improve the highway3) Prepare Bill Of Quantities4) Design all details related to the highway
Traffic studies
Apr 20, 2023Design of Nablus Tulkarm Highway
5
Three counts are conducted1. Wed 2/6/2009 between 6:00 AM - 6:00 PM (Beit
lead Intersection)
2. Wed 9/6/2009 between 6:00 AM - 6:00 PM (Tanib Factory)
3. Tue. 23/2/2010 between 3:00 - 5:00 PM (Tanib Factory)
Results of traffic counts
Apr 20, 2023Design of Nablus Tulkarm Highway
6
The count
PHPHV
(Veh/hr)PHF
AMPMAMPMAMPM
Tanib Brick Factory count
7:45 - 8:452:15 - 3:155756370.8870.862
Beit lead intersection count
7:30 – 8:303:15 – 4:153703620.8400.856
DHV
Apr 20, 2023Design of Nablus Tulkarm Highway
7
DHV = 0.1 * ADT
Design control and criteria
Apr 20, 2023Design of Nablus Tulkarm Highway
8
Functional classification Based on AASHTO, the highway can be classified as Rural Minor
Arterial HighwayDesign Vehicle based on vehicle classifications and AASHTO recommendations, WB-
62 is chosen to be the design vehicle Design Speed
The highway is divided into three zones depending on the design speed:
o From station 0+000 to station 2+700 v = 110 km/hr
o From station 2+700 to station 3+200 v = 100 km/hr
o From station 3+200 to station 5+421 v = 90 km/hr
Design control and criteria
Apr 20, 2023Design of Nablus Tulkarm Highway
9
LOS by analyzing the LOS for the two lane (which is the
existing ) for a 20 years period, the LOS is founded to be E, which is not accepted for such highway.
So, the analysis is done based on four lane and founded to be B, which is suitable for such a
highway.
Pavement Design
Apr 20, 2023Design of Nablus Tulkarm Highway
10
part one (from station {0+000 to 1+250}, {1750 to 2+150}, {3+000 to 3+400}, and {4+300 to 4+700} ) will be designed based on CBR value of 3, part two (from station {1+250 to 1+750}, {2+150 to 3+000}, {3+400 to 4+300}, and {4+750 to 5+420}) will be designed based on CBR value of 20.
Design Considerations
Apr 20, 2023Design of Nablus Tulkarm Highway
11
Pavement performance ∆PSI = Pi – Pt = 2. Traffic Roadbed soil ( subgrade material ) and Material of construction and
Environmental
Reliability ( R = 95 %, S. =0.45 )
LayerCBRMram
BC8028,000 Ib/in2
0.133
0.9
SB4017,500 Ib/in2
0.120.9
AS450,000 Ib/in2
0.44
SBPart 13
4500 Ib/in2
Part 22012,900 Ib/in2
2.23* 10^6
PAVEMENT DESIGN USING AASHTO METHOD
R% = 95%S0 =0.45ESAL 2.23 *10^6Mr = 4500 SN=4.7
Results
Apr 20, 2023Design of Nablus Tulkarm Highway
13
Surface layer thickness D1
(cm )
Base layer thickness D2
(cm )
Subbase layer thickness
D3 (cm )
Part one104040
Part two101515
After Modification
Surface layer thickness
D1 (cm )
Base layer
thickness D2 (cm )
Subbase layer thickness
D3 (cm )
Rockfill layer
(cm)
Part one10202050
Part two1015150
Design Criteria for Horizontal Curves
Apr 20, 2023Design of Nablus Tulkarm Highway
14
Radius As design speed equal 110 km/hr the superelevation equal 6% Rmin = 560 m.
As design speed equal 100 km/hr the superelevation (Table 3.14 Equal 6% Rmin = 435 m. AASHTO
2001)As design speed equal 90 km/hr the superelevation Equal 6% Rmin = 335 m.
Super elevation It is assumed to be 6 %
Min. Length L min= 3*110 = 330 m (for v = 110 km/hr)
L min= 3*100 = 300 m (for v = 190 km/hr)
L min= 3*90 = 270 m (for v = 90 km/hr)
Results of Horizontal Curves
Apr 20, 2023Design of Nablus Tulkarm Highway
15
Design Criteria for Vertical Curves
Apr 20, 2023Design of Nablus Tulkarm Highway
16
Terrain For Nablus Tulkarm Highway, the terrain where the road
passes is level so, highway sight distance are generally long or can be satisfied.
Grade Since the terrain is level, in the project design the grade
doesn't reach the max. grade which is 4 %, and also the min. grade is satisfied.
Results of Vertical Curves
Apr 20, 2023Design of Nablus Tulkarm Highway
17
No.TypeLength (m)St. of PVIG 1%G 2%
1Sag1500+375.64-1.76-0.69
2Crest1500+545.35-0.69-1.43
3Sag1500+901.49-1.43-1.34
4Crest1501+625.00-1.34-1.84
5Sag1501+847.94-1.84-1.13
6Sag1502+382.85-1.13-1.07
7Crest1502+705.00-1.07-1.95
8Sag1502+934.04-1.06-1.95
9Crest1503+530.00-1.38-1.06
10Sag1503+980.28-1.26-1.38
Cross Section Element Design
Apr 20, 2023Design of Nablus Tulkarm Highway
18
The cross section elements are designed based on AASHTO recommendation to be as follow:
1. Lanes : 3.6 m for each2. Shoulder: 2.5 m for each3. Median: 3 m4. Cross slopes: 2% (for traveled lanes) and 4% for shoulders.5. Side slopes: 1:3 6. Sloped curb stones are used for median
Cross Section Details1. Guard rail2. Ditches3. Culverts
Typical cross sections for part one
Apr 20, 2023Design of Nablus Tulkarm Highway
19
Typical cross section for part two
Intersection design
Apr 20, 2023Design of Nablus Tulkarm Highway
20
All intersections in this project are “T” intersections.
The project contains 4 main intersections, which are :
1. Ramallah intersection 2. Beit lead intersection 3. Ramin intersection 4. Enab intersectionThe angle of all intersections is 90˚ Rmin= 37 m ,
with offset=1.3 m, and taper 30:1 Sample of intersection deign shown below.
Ramallah intersection
Apr 20, 2023Design of Nablus Tulkarm Highway
21
Ramin intersection
Apr 20, 2023Design of Nablus Tulkarm Highway 22
Apr 20, 2023Design of Nablus Tulkarm Highway 23
BOQ
No.DescriptionUnitQuantity
1ExcavationC.M63,881
2EmbankmentC.M26,507
3Rock FillC.M29,746
4Sub BaseSq. m123,873
5Base CourseSq. m118,426
6Prime Coat (MC 70)Sq. m113,000
7AsphaltSq. m112,369
8Pipe Culverts 1m ФL.m198
9Guard RailL.m1480
10Precast concrete Curb
StoneL.m9500
11Ready mixed concreteC.M1600
Apr 20, 2023Design of Nablus Tulkarm Highway
24
Recommendations
Adoption of suggested new design
The Drainage system should be improved .Not to cot the trees that are located within
the boundary of our road design, and replant these trees outside the road.
Give the accurate priority of the road. make a maintenance program for the road
Apr 20, 2023Design of Nablus Tulkarm Highway
25
Apr 20, 2023Design of Nablus Tulkarm Highway 26