RIICWD601E Manage civil works design processes Assessment

  Knowledge Assessment (Written Tasks)

1. Outline 2 ways to reduce the environmental impact of civil projects.

2. What is the advantage of incorporating demand operated ventilation in civil designs?

3. In designing stair placement, what would you do to encourage use?

4. How would you develop a sustainable procurement strategy to be implemented during construction?

5. Where relevant to the proposed development, what engineering  information at should be provided?  

6. What does it mean to have uniquely identified requirements? Why should requirements be uniquely identified?

7. What is the term used for the processes required to ensure that the project include all the work required, and only the work required, to complete the work successfully.

8. Project Scope Management has following processes:

Arrange them in the correct sequence.

9.Outline specifications which includes written documents that describe the materials and workmanship required for a development. They do not include cost, quantity or drawn information but need to be read alongside other contract documentation such as quantities, schedules and drawings.

11. What should a completed detailed design include?

12. Outline a strategy to facilitate collaboration on an engineering project.

13. What is Computer Aided Design?

14. What should happen after the design review?

15. What does it mean to actively listen?

16. How is the client included in design concept development?

17. What is the purpose of design evaluation?

Skills Assessment (Practical Tasks)

ASSESSOR NOTE

These instructions must be followed when assessing the student in this unit.  The checklist on the following page is to be completed for each student.  Please refer to separate mapping document for specific details relating to alignment of this task to the unit requirements.

1. What happens if your result is ‘Not Yet Competent’ for one or more assessment tasks?
2. What if you disagree on the assessment outcome? 
3. What if I believe I am already competent before training?
4. Credit Transfer

Task 1 – Civil Works Design

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.

Design Specifications

• The Problem 

You are a civil designer working for the state department of transportation. You have been assigned responsibility for the design of a truss bridge to carry a two-lane highway 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, excavation of the river banks 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 32.5 meters above the high water level (8.5 meters above the top of the river banks).
  • The bridge may consist of either standard (simple supports) or (arch supports). If necessary, the bridge may also use one intermediate , located near the centre of the valley. If necessary, the bridge may also use cable , located 8 meters behind one or both abutments.
  • Each main truss can have no more than 100 and no more than 200 .
  • The bridge will have a flat, reinforced deck. Two types of concrete are available:
    • Medium-strength concrete requires a deck thickness of 23 centimetres (0.23 metres).
    • High-strength concrete requires a deck thickness of 15 centimetres (0.15 meter).
  • In either case, the deck will be supported by transverse spaced at 4 metre intervals. To accommodate these floor beams, your must have a row of joints spaced 4 meters apart at the level of the deck. These joints are created automatically when you begin a new design.
  • The bridge deck will be 10 meters wide, such that it can accommodate two lanes of traffic.
• Member Properties
  • Materials. Each member of the truss will be made of either carbon steel, high-strength low-alloy steel, or quenched and tempered steel.
  • The members of the truss can be either solid bars or hollow tubes. Both types of cross-sections are square.
  • Member Size. Both cross-sections are available in a variety of standard sizes.
• Loads 

The bridge must be capable of safely carrying the following loads:

• Weight of the deck.
  • Weight of a 5-cm thick , which might be applied at some time in the future.
  • Weight of the steel floor beams and supplemental bracing members (assumed to be 12.0 applied at each deck-level joint).
  • Weight of the main trusses.
  • Either of two possible truck loadings:
  • Weight of one standard H25 truck loading per lane, including appropriate allowance for the dynamic effects of the moving load. (Since the bridge carries two lanes of traffic, each main truss must safely carry one H25 vehicle, placed anywhere along the length of the deck.) 
• Weight of a single 480 kN Permit Loading, including appropriate allowance for the dynamic effects of the moving load. (Since the Permit Loading is assumed to be cantered laterally, each main truss must safely carry one-half of the total vehicle weight, placed anywhere along the length of the deck.)
• Safettructural Safety :The bridge will comply with the structural provisions of the state specified standards, to include:
  • Material densities
  • Load combinations
  • Tensile strength of members
  • Compressive strength of members
• Cost : The cost of the design will be calculated using the following cost factors:
  • Material Cost: 
    • Carbon steel bars - $4.50 per kilogram
    • Carbon steel tubes - $6.30 per kilogram
    • High-strength steel bars - $5.00 per kilogram
    • High-strength steel tubes - $7.00 per kilogram
    • Quenched and tempered steel bars - $5.55 per kilogram
    • Quenched and tempered steel tubes - $7.75 per kilogram
  • Connection Cost: $500.00 per joint
  • Product Cost: $1000.00 per product
  • Site Cost: 
    • Reinforced concrete deck (medium strength) - $5,150 per 4-meter panel
    • Reinforced concrete deck (high strength) - $5,300 per 4-meter panel
    • Excavation - $1.00 per cubic meter (See the Site Design Wizard for excavation volume)
    • Supports (abutments and pier) - Cost varies (See the Site Design Wizard for specific values)
      • $6,000 per anchorage

Required:

1. Make a detailed list of all constraints and requirements to the bridge design. 
2. Prepare functional specifications
3. Present at least 2 designs to meet the design specifications.  The designs are to include, as relevant:

• calculations, which may include:
  • loads
  • sheer forces
  • bending moments
  • stresses
  • construction materials and services quantities
  • construction cost estimates
  • recommended sizing of components
  • recommended materials
  • recommended reinforcement sizing and location
  • drawings
  • risk assessment of:
    • the existing conditions
    • the application of the design
    • maintainability of the works 
  • health, safety and environmental requirements
  • contribution to ancillary documentation, which may include:
    • design notes
    • construction notes
    • supplementary drawings
    • input to the specifications

Note: The designs, and their development, should comply with relevant requirements including:

• legislative, organisational and site requirements and procedures
• manufacturer's guidelines and specifications 
• Australian standards
• Code of practice
• Employment and workplace relations legislation
• Equal Employment Opportunity and Disability Discrimination legislation