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Task 1 – Civil Works Design Instructions to Learners: • This summative assessment can be completed in class or at any other convenient location. • Students are required to complete this task using digital tools and ensure to submit in an acceptable format, e.g. .docx, .pdf, .pptx, or as advised by your assessor. • Please use the following formatting guidelines to complete this assessment task: ▪ Font Size: 12; Line Spacing: Double; Font Style: Times New Roman • Assessment activities can be completed either in real workplace environment or in a simulated environment such as your classroom. In both cases, appropriate evidence of the assessment activities must be provided. Instruction to Assessors: • You must assess student’s assessment according to the provided Marking Criteria. • You must complete and record any evidence related to assessment activities including role-plays and presentations using appropriate forms which must be attached with student assessment submission. • You must provide students with detailed feedback within 10 working days from submission. 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 1. 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. 1 | P a g e 2. Design Objective Satisfy all of the specifications listed below, while keeping the total cost of the project as low as possible. 3. Bridge Configuration 1. The bridge may cross the valley at any elevation from the high water level to 24 meters above the high water level. 2. If the elevation of the bridge is below 24 meters, excavation of the river banks will be required to achieve the correct highway elevation. 3. 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). 4. 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. 5. Each main truss can have no more than 100 and no more than 200 . 6. The bridge will have a flat, reinforced deck. Two types of concrete are available: 1. Medium-strength concrete requires a deck thickness of 23 centimetres (0.23 metres). 2. High-strength concrete requires a deck thickness of 15 centimetres (0.15 meter). 7. 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. https://canvas.instructure.com/courses/838884/files/26720098/download?verifier=srGq0rVxu2PZEz17EsCUszLPZx5DXcGxVVyYtJzG https://canvas.instructure.com/courses/838884/files/26720098/download?verifier=srGq0rVxu2PZEz17EsCUszLPZx5DXcGxVVyYtJzG 2 | P a g e 8. The bridge deck will be 10 meters wide, such that it can accommodate two lanes of traffic. 4. 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. 5. 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.) 6. Structural 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 3 | P a g e 7. 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) o $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 4 | P a g e • 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 5 | P a g e TA S K 1 – MA RKIN G C RI TERIA RIICWD601D - Manage the civil works design process S NYS Learner’s name: Assessor’s name: Observation Criteria S NS Accessed, interpreted and applied Civil works design documentation and ensure the work activity is compliant Obtained, read, interpreted, clarified and confirmed work requirements Communicated clearly and concisely with others to receive and clarify work instructions Located and applied relevant legislation, documentation, policies and procedures Advised the client on the implications for sustainability and options for an improved environmental outcome in the project Analysed the client requirements for the design criteria to ensure all appropriate specifications were included Confirmed that all development and implementation factors are accounted for Adhered to risk assessment and management requirement and procedures Adhered to statutory compliance requirements and procedures Adhered to work health and safety requirements and procedures Adhered to environmental management requirements and procedures Adhered to cultural and heritage requirements and procedures Adhered to quality management requirements and procedures Prepared functional specifications applying engineering standards and the design specifications Documented and obtained the client’s agreement on the criteria Identified innovative approaches to the development of the design concept 6 | P a g e Investigated and analysed the possible design concepts capable of achieving the design requirements Sought advice from appropriate personnel and sources where the concept proposal has nonstandard engineering requirements or where new technology may apply Collaborated with the client to adapt the design concept to improve the outcomes and overcome problems Used a range of communication techniques and equipment to convey information to others Provided team leadership and coordination where relevant Advised the client of the likely impacts on the community Analysed and selected resources, processes and systems to develop the design Arranged design tasks to meet the agreed outcomes and cost structure Developed and checked the design solution using the engineering specification Created (when appropriate) a demonstration model of the design Established the documentation management process Ensured that the supporting documentation required to implement the design is accurate, concise, complete and clear Ensured that the designed item is identified by agreed design documentation and records Applied the agreed documentation control process when making changes to design Used computer aided design (CAD) technology and engineering graphical presentation techniques Ensured that the documentation for the design remains accurate and current during the design development Took civil works construction plant and equipment capabilities into account Took operational techniques required for the execution of civil works construction tasks into account Reviewed the design to ensure that the client’s requirements are