PriceDr Long Truong 1 School of Engineering and Mathematical Sciences Department of Engineering...

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PriceDr Long Truong  1 School of Engineering and Mathematical Sciences  Department of Engineering CIV4ID Infrastructure Design  Assessment 3:   Road and Pavement Design This is an Individual assessment and is worth 50% of the final grade for the subject.  The assessment must be submitted online in a single PDF file. Due Date: Wednesday 7th November 2018 by 10:00 am 1 PROJECT OBJECTIVES  This road design exercise will assist your learning by providing you with an opportunity to  apply what you have learnt to a real design situation.  This exercise will assist you to:  • Reinforce and integrate the material covered in the syllabus, especially in road  planning, geometric design, and pavement design,  • Apply the road design and decision-making processes in selection of a road  alignment,  • Develop an approach to solving a road design problem,   • Develop an approach to solving a flexible pavement design problem, and  • Develop and practice skills to work and communicate in a professional design  environment.  2 INTRODUCTION  The State Highway, known as Boulder Highway currently passes through the township of  Parksville, an expanding rural centre with a population of 40,000. As a result of the district's  economic growth, the traffic using the road has increased to a stage where there are moderate  to severe delays.  The increased traffic has had negative environmental and social impacts for  the residents of Parksville and recently there have been several accidents involving vehicles  and pedestrians.  3 WHAT YOU NEED TO DO  In response to these problems, VicRoads commissioned a study that concluded the solution  was to construct a new road to bypass Parksville.  You have been retained as a consultant by  VicRoads to design a route for this new Parksville bypass.  VicRoads has stipulated that the  route must provide for the safe and efficient movement of vehicles around Parksville while  keeping construction costs, land acquisition and environmental encroachments to a minimum.  Dr Long Truong  2  Your task in this preliminary design phase is to propose, design and evaluate ONE alternative  alignment for the new bypass. Note that in practice, several alternative alignments are  developed and compared to select a preferred alignment for final design ultimately. As part of  the preliminary design, you also need to cover road pavement design for the bypass.  All designs must comply with Austroads standards, e.g. Austroads Guide to Road Design and  Austroads Guide to Pavement Technology.  More information about the design project can be found in the Frequently Asked Questions  file on LMS.  4 PRELIMINARY DESIGN METHODOLOGY  4.1 Stakeholder identification  You are initially asked to identify stakeholders who are likely to be affected or influence the  road project.  4.2 Initial route identification   Your first key design task is to identify ONE route for preliminary design evaluation. If the  last your digits of your student ID ≥ 5000, your proposed route MUST pass North of  Parkville; otherwise, your proposed route MUST pass South of Parkville.  You must discuss restraints imposed by the topography of the site, the township itself, the  environmentally sensitive areas and the costs of construction to support your proposed route.  4.3 Alignment design  a) Develop the alignment for the bypass road having regard to the co-ordination of  horizontal and vertical alignments and the technical, environmental and social design  constraints. This will involve the selection and computation of horizontal alignment  geometry and vertical curve design making proper provision for sight distance and  requires consideration of curve radius, super-elevation, transition length, vertical curve  length and geometry, grades etc.  • You should use Civil 3D for designing the alignment and generating drawings. Note  that Project Map 2018.dwg is available on LMS, where the existing ground surface  was already coded.   • However, you MUST also provide manual calculations for horizontal and vertical  curves. Other design checks, e.g. curve radius, super-elevation, transition length,  vertical curve length, maximum grades, design form etc, MUST also be discussed.  b) Set chainage points at 20m intervals commencing at the take-off point.  Note that for this  exercise, the design line shall be the centreline.  c) Calculate earthwork quantities using the 20m-interval cross-sections over the length of  the road using Civil3D. Draw the mass-haul diagram (in scale) and discuss its properties.  You can either draw the mass-haul diagram using Excel or Civil3D.  d) Prepare scale drawings of:  • The plan, showing horizontal curve details and cut-and-fill extremities.  • The longitudinal profile along the design line showing vertical grading details and  cut-and-fill requirements.  • 4 ‘typical’ cross-sections (e.g., a tangent, curves, through the rock, etc.).   Drawing requirements are presented in APPENDIX A.  Dr Long Truong  3  4.4 Pavement design  You will need to design an unbound pavement with thin bituminous surfacing for the bypass.  Note that you can design using either the empirical design approach or mechanistic approach.  If you prefer the mechanistic approach, please follow the guideline for converting material  CBR to elastic parameters on LMS.  The pavement structure is to be designed for a design life of 20 years. Current AADT and  estimated traffic load distribution (TLD) are provided in Project Data Excel file on LMS.  Depending on your student ID, the following parameters must be used:  • If the last four digits of your student ID

Dr Long Truong 1 School of Engineering and Mathematical Sciences Department of Engineering CIV4ID Infrastructure Design Assessment 3: Road and Pavement Design This is an Individual assessment and is...

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