Quiz 3

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University of New South Wales *

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1022

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Mechanical Engineering

Date

Apr 3, 2024

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docx

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3

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Quiz 3 1. ESSAY: This week’s reading material shows that in comparison to a small site with a single crane, a multi crane is more challenging to plan. Briefly explain 4 planning characteristics in multi-crane building construction sites. Multiple parties being involved. Multi-crane projects involve more functional parties in the equipment planning in comparison to a single crane project. The increase in the number of involved parties results in project complexity. Reputation and visibility: Companies with multicrane projects tend to care about the appearance of the site whilst the construction is progressing. Companies tend to colour coordinate cranes, whilst using different manufacturers on the same site. This process can be time consuming and often needs a lot of management to meet the companies expectations. Crane layouts When multiple cranes are involved in a project it poses various managerial risks in comparison to a single crane project. Multi-crane projects often involve multiple shared zones that can pose various managerial and safety challenges in the construction process of a multi-crane project. Multi crane projects must ensure that they employ experienced and trained operators and plan daily and weekly schedules of the cranes to avoid the collision of two cranes during the construction process. Logistics of planning. Multicrane projects need more coordination and communication between operators in comparison to a single project. Construction mangers need to ensure that the cranes can reach all areas of the site. They must also ensure that there is substantial space for the cranes dismantling on the site, as this can often create complications on a multicrane site. On average, remediation work in Project Remediate is estimated to take around ____ to complete. ANSWER: 6 months
A contractor was awarded a medium scale repair and restoration work for a 10-storey building project. The site is congested due to adjacent buildings resulting in a constrained access. Moreover, the awarded contractor needs to work within a short period of time, thus, a system which has the lowest down time is the preferred option. The work among others includes: 1m x 1m aluminimum architectural façade cladding Mechanical works Masonry works Based on the description what is the best equipment to carry out the work? ANSWER: Mast Climber What is accelerated aging test of a façade system? ANSWER e. Placing the façade in contact with specific acida and chemicals to create an aggressive atmosphere environment to test durability. Which of the earthmoving equipment suits best for the list of activities. Foundation backfilling Debris removal from site Rocks and aggregates removal to a dump truck. ANSWER: Loader and excavator What is spandrel panel in high-rise building façade? ANSWER: C. An opaque glass or non-vision According to Health and Safety Executive (HSE), what are the main hazards of using an excavator? ANSWER: A Moving slewing and working. In Andrews lecture, data collected from ____ years old class 2 buildings in NSW found that 39% of them had serious defects, costing $332,000 per building to rectify. ANSWER: 4 An electronic sensor part of the new mechanical system was installed on each panel of John Hancock Tower in Boston. How does the mechanical system work?
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