Constructing LINES and CIRCLES

In this Task

• Drawing the main center lines on the Profile layer.

Associated Tasks

• Inserting single and concentric circles.

Before you Start

• Start a new drawing using the Student_2D template, or use the sample drawing for this Session.

Take Note

• Initial lengths of center lines may vary from those is the illustrations.
• Menu options for the Default menu and workspace, the Ribbon and Palettes are provided directly under the Command Name heading.

 

Single Lines

Ribbon : Draw | Draw 2D | Line

Default Menu : Draw | Single

Palette : Sketch | Line | Line

This tool draws a single line with a start, middle and end point.The start and end points of the line are referred to a vertices. A single point is referred to as a vertex.Additional lines are started automatically after the completion of the current line.All geometric and spatial properties of a drawn line can be adjusting using the Selection Info palette.

Draw 2 straight intersecting lines to represent the center lines, making the length of the vertical line approximately 220 and the horizontal approximately 300.

Draw the lines in a similar configuration to that shown below.

Concentric Circles

Ribbon : Draw | Draw 2D | Circle/Ellipse | Concentric

Default Menu : Draw | Circle | Concentric

Palette : Sketch | Circle/Ellipse | Concentric Circles

The Concentric Circle tool draws a series of circles at different radii from the same center point.The radii or diameters are input into the data fields of the Inspector Bar.

Insert 4 concentric circles on the newly created intersection to diameters 38, 73, 95 and 117, shown below. Use the Intersection snap mode to correctly target the intersection of the center lines.

 

Circle – Center & point

Ribbon : Draw | Draw 2D | Circle/Ellipse | Center & Point

Default Menu : Draw | Circle | Center & Point

Palette : Sketch | Circle/Ellipse | Circle Center & Point

All 2D circle tools provide options to generate these objects according to specific criteria such as radius, diameter, tangential connections etc. For example, a circle can either be drawn from a center to a radial point, from 2 points on the diameter or by connecting 2 tangential points to other circles or lines.The geometrical and spatial information, as well as the properties (layer, color, line style etc) for any drawn object can be found using the Selection Info Palette. For example, the radius of a circle can be changed by selecting the circle and viewing the information in the Selection Info Palette.Similarly, geometric information, for example, changing the radius or a circle be done using the Metrics pane of the Selection Info Palette.

Onto the intersection shown below, insert a circle with a diameter of 12. Make sure the Intersection snap mode is activated.

Circle drawn on intersection of center line and circle