Page 287 - CITS - ED - Mechanical

ENGINEERING DRAWING - CITS

Arc command (Fig 4)
1 Choose Draw, arc.

(or)
2 Click The Arc icon.
(or)

3 Type Arc at the command prompt
command: ARC
4 Draw One of the arcs.

Fig 4

TIPS Fig 5
- Except for 3 point arcs, arcs are drawn in a counter
clock wise direction.
- While in the arc command, press the right mouse
button to select the following options for arcs:
(Fig 5)

Arc examples (Fig 6)
3 point arc
Start, centre, chord length

Start, centre, end
Start, end, radius
Start, centre, included angle
Start, end direction

Drawing ellipses and elliptical arcs
Ellipses are much easier to draw with CADD than on a drawing board. On a drawing board, you need to find the
right size template or draw a series of arcs individually to draw an ellipse. With CADD, all you need to do is specify
the size of the ellipse.

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CITS : Engineering Drawing (Mechanical) - Exercise 12