Coursework Title: Highway Construction
Module Name: Construction Practice
Module Code: 4105BEUG
Level: 4
Credit Rating: 24
Weighting: 25%
Maximum mark available: 100%
Lecturer: Raj Shah
Contact: If you have any issues with this coursework you may contact your lecturer. Contact details are:
Email: r.shah@ljmu.ac.uk
Room: Cherie Booth 307
Hand-out Date: 28th September 2015
Hand-in Date: 5pm on 14th December 2015
Hand-in Method: Hard copy to the Administration Centre (Avril Robarts)
Feedback Date: 13th January 2016
Feedback Method: Marked work will be handed back to each group
Programmes: MEng / BEng Civil Engineering, MEng Civil and Structural Engineering, MEng Civil and Offshore Engineering, MEng Civil and Environmental Engineering, MEng Civil Engineering and Architecture, MEng Civil Engineering and Construction Management, MEng Civil and Transportation Engineering
Introduction
Assume you are a new graduate and you have recently been employed as a graduate civil engineer, working for a major road Contractor Company “A&C”. The company has assigned you to work on a £4.5 million highway construction project (1.5 km by-pass around a small rural village) aiming to reduce the traffic congestion which has existed for many years through its narrow main street.
Learning Outcome to be assessed
Describe and examine the principal features of project planning including the methods available for programming construction works, cash flow analysis, and monitoring of progress, and sequencing using industry standard software.
Detail of the task
Assignment Brief: Assume you are a new graduate and you have recently been employed as a graduate civil engineer, working for a major road Contractor Company “A&C”. The company has assigned you to work on a £4.5 million highway construction project (1.5 km by-pass around a small rural village) aiming to reduce the traffic congestion which has existed for many years through its narrow main street. Your first task is to determine the alignment of the new by pass road using information provided by the Consulting Engineering Company called “R&D”. To do this, you will need to establish the position of the centre-line of the by–pass road and locate marker pegs at intervals of 25m in the open fields around the village where the road will eventually be built. For this assignment, submit a design and cost report that includes a total of four tasks as indicated below. The following images (Figures 1 and 2) provide you with the background information for the problem of setting out a by-pass road alignment in the highway construction project.
Figure 1: Typical road alignment with a horizontal curve of a by-pass-road as seen on a map
Figure 2: Typical road alignment of a road section as seen from air
Coursework 1 needs to be submitted as one report from each group. The report should include a total of four tasks having equal marks (max 25). A total of 20% of the marks for each task are allocated for the presentation and originality (demonstrating the additional effort, creativity and understanding made for the completion of the tasks) in the report. You must include the Group no in the report and also include a brief introduction to the project, a contents page, conclusions and necessary references.
Task 1: Calculate the setting out data (T1, Length of curve, T2, chord and arc length at 25m intervals) for a circular horizontal curve of radius (900 +Group no) m connecting two straight road sections between station A and B with a deflection angle (Ɵ) of 18o as shown in Figure 3 below. The chainage of the intersection point is 9500.00m from station A and centre-line pegs are to be located at 25m intervals. Find the chainage of stations T1, T2 and Station B if the distance between T2 and B is equal to 4500m. Discuss the importance of the horizontal curve in highway design when selecting a road alignment between two places (max 100 words). (Max 25 marks)
Station (B)
Station (A)
Figure 3: Components of a horizontal curve in a road section.
Task 2: Find the earthwork quantities (for both cutting and backfilling operations) of the 1.0 km road section between chainage 94+000 and 95+000 m. The reduced levels and design levels of the road section are shown in Table 1. The longitudinal profile and cross-section of the road section are shown in Figure 4 below. Assume a trapezoidal section for both cutting or excavation and backfilling or filling sections with a side slope (1.3:1) [H: V]. Road width (B) is equal to (18+Group no/4) m. Assume any necessary data to perform task 2 and include justification in the report for any assumptions made. (Max 25 marks)
Table 1: Ground and design level of a 1 km road section at 25 m interval.
SN Chainage/Station (m) Chainage Interval (m) Existing Ground Level (m) Road Design Level (m)
0 94+000.00 25 461.94 463.50
1 94+025.00 25 462.07 463.40
2 94+050.00 25 462.57 463.43
3 94+075.00 25 462.83 463.58
4 94+100.00 25 462.35 463.86
5 94+125.00 25 462.11 464.26
6 94+150.00 25 462.40 464.79
7 94+175.00 25 462.99 465.44
8 94+200.00 25 463.78 466.22
9 94+225.00 25 465.39 467.04
10 94+250.00 25 467.59 467.87
11 94+275.00 25 469.41 468.69
12 94+300.00 25 470.85 469.52
13 94+325.00 25 472.19 470.35
14 94+350.00 25 473.38 471.17
15 94+375.00 25 474.35 472.00
16 94+400.00 25 475.01 472.83
17 94+425.00 25 475.62 473.65
18 94+450.00 25 476.27 474.47
19 94+475.00 25 476.92 475.21
20 94+500.00 25 477.78 475.84
21 94+525.00 25 478.59 476.36
22 94+550.00 25 478.88 476.79
23 94+575.00 25 478.60 477.11
24 94+600.00 25 477.90 477.32
25 94+625.00 25 476.94 477.43
26 94+650.00 25 476.25 477.44
27 94+675.00 25 475.94 477.34
28 94+700.00 25 475.85 477.14
29 94+725.00 25 475.62 476.87
30 94+750.00 25 474.79 476.61
31 94+775.00 25 474.06 476.41
32 94+800.00 25 473.88 476.32
33 94+825.00 25 474.02 476.33
34 94+850.00 25 473.97 476.44
35 94+875.00 25 473.14 476.66
36 94+900.00 25 471.91 476.99
37 94+925.00 25 471.38 477.41
38 94+950.00 25 473.35 477.95
39 94+975.00 25 475.09 478.58
40 95+000.00 0.00 477.09 479.32
Typical road cross-section
⦁ Excavation/cutting section b) Backfilling section
Road width (B)
Ground level
Road width (B)
Depth (m)
Figure 4: Typical longitudinal profile and cross-section of a 1 km road section.
Task 3: Find the project cost of the road section (1.0 km) as shown in task 2, which includes the cost of earthwork and pavement work. Assume the quantities of the earthwork (cutting and filling tasks) are the same as the quantities calculated in task 2 and calculate the quantities of different pavement layers using information in Figure 5 below. The unit cost of each item is to be selected from the price book of civil engineering and highway works (uploaded in blackboard under workshop/tutorial sub-folder). Assume any necessary data to perform task 3 and include your justification in the report. (Max 25 marks).
Road width = (18m+Group no/4)
(Offsets = 0.25 m in both sides
Compacted earthen road surface
Figure 5: Typical cross-section of a road pavement
Task 4: Estimate the quantities and costing of a concrete retaining wall having a total length (950+Group no) m as shown in Figure 6 below. Consider only four activities in the retaining wall: concrete work, formwork, steel rebar and earthworks. Use the unit cost rate of concrete work, steel bars and earthwork from the unit price book of civil engineering works (uploaded in Blackboard). In this task, you can assume concrete C20 (according to BS code) or (C20/25 according to Euro Code 2) in order to find the unit price from the Civil engineering price book for the construction of the retaining wall. You should also assume the rebar quantity used in the retaining wall (2.5% of total concrete volume). Assume any necessary data and describe the functions of retaining walls particularly in terms of the civil engineering aspects (max 100 words).
(Max 25 marks).
2.3m
Figure 6: Typical cross-section of a concrete retaining wall (all dimensions in m)
0.3 m
5.0 m
1.0 m
2.7 m
.0.70.0 m
6.0 m
1.0 m
3.7
1.0 m
What you should hand in
A report from each group should be submitted as a hard copy at the transaction desk in the Avril Robarts LRC.
The report must include a ‘contents’ page which clearly states which students in the group have been involved in the writing of each section. If several students in the group have been involved in the writing of any section, then it will assumed that each have had an equal contribution to the section, unless it is clearly stated that this was not the case.
Your report must include all tasks and should be submitted in a form of a hard copy (printed report). One report is to be submitted by each group of Students.
Marking Scheme/Assessment Criteria
Mark allocation is shown within the Detail of the Tasks.
Note that marks may be reduced for any student who does not contribute fairly to their group.
Recommended reading
Lecture notes
Extenuating Circumstances
If something serious happens that means that you will not be able to complete this assignment, you need to contact the module leader as soon as possible. There are a number of things that can be done to help, such as extensions, waivers and alternative assessments, but we can only arrange this if you tell us. To ensure that the system is not abused, you will need to provide some evidence of the problem.
More guidance is available at https://www2.ljmu.ac.uk/student-administration/126427.htm
Any coursework submitted late without the prior agreement of the module leader will receive 0 marks.
Academic Misconduct
The University defines Academic Misconduct as ‘any case of deliberate, premeditated cheating, collusion, plagiarism or falsification of information, in an attempt to deceive and gain an unfair advantage in assessment’. This includes attempting to gain marks as part of a team without making a contribution. The Faculty takes Academic Misconduct very seriously and any suspected cases will be investigated through the University’s standard policy (Academic Misconduct). If you are found guilty, you may be expelled from the University with no award.
It is your responsibility to ensure that you understand what constitutes Academic Misconduct and to ensure that you do not break the rules. If you are unclear about what is required, please ask.
For more information you are directed to following the University web pages:
⦁ Information regarding academic misconduct:
http://www2.ljmu.ac.uk/corporate/SPR/89510.htm
⦁ Information on study skills: http://www2.ljmu.ac.uk/studysupport/
⦁ Information regarding referencing:
https://www2.ljmu.ac.uk/studysupport/69049.htm
