GEOM2131 Site Investigation Geology and Surveying
Task:
Questions 1 to 6
1. What is the height difference between point D and point F?
2. If you walked from the railway station to Mt Erin, how many metres would you have climbed?
3. At what area reference does the unsealed road and railway line intersect?
4. What map points are located at the following AR4251?
5. In which direction (as a bearing) would you travel to reach point D from point H?
Note: Use a protractor and round your answer to the nearest 10°.
6. What kind of topographic landform is represented by “G” in Figure 1?
Question 7
It contours at vertical intervals of 0.5 m over a building site, drawn at scale 1:500. The horizontal distance from E to D on the ground is 8.0 m.
Calculate the gradient from E to D. Quote your answer in the form of a ratio, i.e., 1 in _(?)_? Do not forget the plus (+) or negative (-) symbol to indicate a rise (positive) or fall (negative).
Question 8
Map scale refers to the relationship or ratio between distance on a map and the corresponding distance on the ground.
What does 1 cm on the map equals to, if the scale of a topographic map is 1:100000. Write your answer in kilometres (km).
Question 9
The dimensions of a room on a 1:50 scale plan are 60 mm x 85 mm. What is the area of the room in m² ?
Question 10
With a compass, you measured a bearing from A to B. The reading on the compass is 45°50’.
The magnetic declination on the day you measured the bearing was +130’ and the grid convergence was +020’.
What is the grid bearing of Line AB?
