Reference no: EM133865868

Manage civil works design processes

Assessment - In this assessment, you will demonstrate a sound knowledge of the unit requirements through completing and submitting written questions.

You must correctly answer all questions to show that you understand the knowledge required of this unit.

Practical Tasks

Civil Design Project
You are required to undertake a civil construction design project as outlined below. Your Assessor will take the role of the client for the purposes of this assessment task.

The Problem
You are a civil designer working for the State Department of Transportation. You have been selected to be a team member in a new project to design of a two-lane bridge across the river valley shown below.

Design Objective
Satisfy all of the specifications listed below, while keeping the total cost of the project as low as possible.

Bridge Configuration
The bridge may cross the valley at any elevation from the high-water level to 24 meters above the high-water level.
If the elevation of the bridge is below 24 meters, an excavation of the riverbanks will be required to achieve the correct highway elevation.
To provide clearance for overhead power lines (shown above), the highest point on the bridge may not exceed an elevation of 32.5 meters above the high-water level (8.5 meters above the top of the riverbanks).

The bridge may consist of simple supports, arch supports, or intermediate support located in the valley. The bridge may also use cable, located 8 meters behind one or both abutments.

The bridge will have a concrete reinforced deck. The thickness and reinforcement of this deck will be determined in the detailed design stage.

The bridge deck will be 10 meters wide, such that it can accommodate two lanes of traffic.
The deck loads.

In this stage, the design team should consider the static vertical loads. But, in the detailed design stage the bridge should be capable of safely carrying the different static and dynamic loads including the moving vehicles, wind, and earthquake.
Self- weight of the concrete deck.
Self-weight of a 100-millimeter wearing coat (Asphalt)
Additional 1.0 Kpa Dead Load to take in account railings, parapet, and other utilities.
Live loads resulting from the vehicles and pedestrians 10 KPa.

Structural Safety
The bridge will comply with the structural provisions of the state-specified standards, including:

Cost
The cost of the design will be calculated using the following cost factors:

Make a detailed list of the constraints and requirements to the bridge design.
Prepare the civil specifications document for the project.
The project manager required each team member to suggest a design for the bridge. By considered the previous constrains and requirements, provide your own suggestion for the bridge. That should be include.
The project drawings: At least the bridge elevation and cross section to elaborate the different components.
In your words explain the path of loading in your suggested solution.
What the cons and bros in your suggested solution
Provide the required resources to complete your design.
After the design team discussed the different available solution for the design, they decided the followings.

The bridge will be supported by two simply supported truss at each of the end as following.
The bridge deck will be constructed by 200 millimetres, M40 concrete.
The deck will be supported by transverse beams spaced at 4 metre intervals.
The span of the bridge will be 36 m and that required 38100 of soil excavation and removal
Determine the design load on the bridge's deck.
Determine the design load on the transverse beam and draw their shear and bending diagram
Use the previous calculations to find the load on the truss joints.
Calculate the internal loads in the truss members by solving the joints A, B and C
By consider the results from the previous question, determine the internal load types (tension or compression) for all the members of the truss.
The design completed the design process for the truss members and the transverse beam. The final design results for these members are showing in the following schedule.

Calculate the bill of quantity (BOQ) for the project, by considering the prices that provided and apply any required research.
Discuss the environmental impacts of the project and advice strategies to control these impacts.

Discuss the different health and safety risks associated with the project in both design stage and construction stage. refer to the following risk matrix to complete this assessment.