1. ________CIVL114 LAB 4

2. Outline Exercise 1 – solving an intersection problem  Point Style  Rotate  Modify Dimension Style Exercise 2 – stirrups  Fillet  Polyline  Stretch

3. Exercise 1 : Solving an intersection problem in surveying Determine the coordinates of C (983.5,1340) (950,1200)

4. Open with no template - Metric

5. Step 1 Draw points A and B Change the point style Draw a line from point A to point B

6. Drawing Points Or press this button

7. Setting point style

8. Zoom extents (show everything drawn) Type z  “enter”  e  “enter” (or use zoom buttons)

9. Turn on “node” & “intersection” object snap modes

10. Finish step 1 Press this button or type L

11. Step 2 Rotate AB by 49 o 27’ 18” to form AC Redraw line AB Rotate AB by 37 o 14’ 36” to form BC

12. Rotate Or press this button

13. Pick line AB (object to rotate) Pick point A (rotation center) Enter -49D27’36” (negative = clockwise angle in AutoCAD) oRotate AB once more, into BC (37 o 14’ 36” for anticlockwise angle)

14. Finish step 2

15. Step 3 Dimension the angle Modify the dimension style Use ID command to find coordinates of point C

16. Dimensioning

18. Modify the dimension style

21. ID (to obtain coordinates of a point)

22. Exercise 2 : Stirrups Main commands involved:  Fillet  Polyline  Stretch

23. Step 1 Draw two rectangles Round the corners of the inner rectangle using FILLET

24. Draw a 1400 x 1000 rectangle

25. Offset by 55 units

26. Fillet (R=35)

27. Step 2 Draw an arc and two lines at bottom left corner Widen the line width of the stirrups (lines inside the rectangle)

28. Circle Draw a circle with a radius of 35 units (type C or use “Circle” button)

29. Polar

30. Draw a line

31. Copy 2 lines

32. Trim

35. Delete Select the object and press “Delete” button. You can press “Esc” to unselect the object Or use ERASE (E) command

36. Polyline Or type PEDIT

37. W=10

38. Finish Step 2

39. Step 3 Dimensioning Modify the dimension style Stretch

40. Linear

41. Add tool bars

44. Modify the dimension style Or this button

48. STRETCH Mouse goes from right to left (“crossing window”)

49. Click to give (any) first point

51. Final (2800 x 800)