________CIVL114 LAB 4

Outline

Exercise 1 – solving an intersection problem Point Style Rotate Modify Dimension Style

Exercise 2 – stirrups Fillet Polyline Stretch

Exercise 1 : Solving an intersection problem in surveying

Determine the coordinates of C

(983.5,1340)

(950,1200)

Open with no template - Metric

Step 1Draw points A and B Change the point styleDraw a line from point A to point B

Drawing Points

Or press this button

Setting point style

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

buttons)

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

Finish step 1

Press this button

or type L

Step 2

Rotate AB by 49o 27’ 18” to form AC Redraw line ABRotate AB by 37o 14’ 36” to form BC

Rotate

Or press this button

Pick line AB (object to rotate) Pick point A (rotation center) Enter -49D27’36” (negative = clockwise angle in AutoCAD)

o Rotate AB once more, into BC (37o 14’ 36” for anticlockwise angle)

Finish step 2

Step 3

Dimension the angle Modify the dimension style Use ID command to find coordinates of point C

Dimensioning

Modify the dimension style

ID (to obtain coordinates of a point)

Exercise 2 : Stirrups

Main commands involved: Fillet Polyline Stretch

Step 1Draw two rectanglesRound the corners of the inner rectangle

using FILLET

Draw a 1400 x 1000 rectangle

Offset by 55 units

Fillet (R=35)

Step 2

Draw an arc and two lines at bottom left corner

Widen the line width of the stirrups (lines inside the rectangle)

Circle

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

Polar

Draw a line

Copy 2 lines

Trim

Delete

Select the object and press “Delete” button. You can press “Esc” to unselect the object

Or use ERASE (E) command

Polyline

Or type PEDIT

W=10

Finish Step 2

Step 3

DimensioningModify the dimension styleStretch

Linear

Add tool bars

Modify the dimension style

Or this button

STRETCH

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

Click to give (any) first point

Final (2800 x 800)