ENS2260 Surveying and Site Measurement

Questions:

1. Mass data methods are used to obtain more survey points rapidly. 

  1. Describe and explain 5 engineering applications of LiDAR remote sensing.
  2. An area of 200 km by 100 km was surveyed using photogrammetry at an average scale of 1 cm = 100 m. The standard size of a single photograph was 150 mm × 150 mm. If 10000 photos were taken in total, find the required side overlap if the longitudinal overlap was 60%. Give your answer to the nearest ten.

2. You work for a surveying company. Main roads WA has contracted your company to set out the centre line of a new highway to be constructed. You have found the following video online about a robot that can do the work more effectively: https://www.youtube.com/watch?v=ZeTJBxgSjEs 

Write a one-page report to convince your line manager of the benefits of using the robot for line marking compared to traditional surveying methods. Use scholarly sources to support your argument. In your report address the following:

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3. Figure 1 shows the earthworks for a proposed two-lane two way divided road to be constructed with a total width of 6 m. The height measured at each cross section is given in Table 1. It can be assumed that the slide slope is 1 in 10 from Chn1490 to Chn1500, and 1 in 5 from Chn1520 to Chn 1530.

  1. Calculate the cross-sectional area at each chainage
  2. Estimate the total volume of:
  3. Cut
  4. Fill

Table 1: Height of the cross-section

Chainage

Height of cross-section

1490

o.6

1500

2.0

1510

0.0

1520

0.5

1530

1.8

Figure 1: Proposed roadway earthworks