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The 3D graphic on the right shows a fuel pump which rests on a concrete plinth in a garage forecourt - Leaving Cert DCG - Question B-3 - 2017
Question B-3
The 3D graphic on the right shows a fuel pump which rests on a concrete plinth in a garage forecourt. Fig. B-3 below shows an isometric view of the pump and plinth.... show full transcript
Worked Solution & Example Answer:The 3D graphic on the right shows a fuel pump which rests on a concrete plinth in a garage forecourt - Leaving Cert DCG - Question B-3 - 2017
Step 1
(a) Draw an elevation of the complete structure looking in the direction of the arrow.
Answer
To create the elevation of the structure, begin by outlining the plinth based on the given dimensions. The plinth has a rectangular base of 30 mm by 20 mm and a height of 40 mm. The elevation view should depict this as a rectangle along with the fuel pump structure on top of it. The fuel pump consists of a front face that is more complex: it has a height of 70 mm and features an upper part that projects forward, creating an angular surface. Ensure that you show the angles and proportions as indicated in the isometric view.
Step 2
(b) Project a plan from the elevation.
Answer
To project the plan from the elevation, represent the top view of the fuel pump and the plinth. The plinth will maintain its rectangular shape while the pump will project forward. Include the detailed outline of the pump as seen from above, showcasing the various parts like the display panel and the nozzle positioning. Make sure to accurately project the dimensions and proportions as seen in the elevation, ensuring all angles and edges are clearly represented.
Step 3
(c) Draw an auxiliary elevation of the structure, projected from the plan, which will include the true shape of surface A.
Answer
For the auxiliary elevation, start by projecting lines from the plan view to establish points along the edges of the structure. Surface A is on the side of the pump that needs to be represented clearly. First, draw lines from the necessary points on the plan, ensuring you maintain the correct angles from the elevation. Then, transfer the heights to present the real shape of surface A. This will create a side view that includes the true dimensions of surface A, ensuring clarity in the elevation. Finally, make certain the auxiliary elevation is complete with all parts labeled and dimensions indicated for precision.