Book - AutoCAD 2021 - Page samples 1 - Exterior Walls

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3.2.4 - Ground floor - Exterior Walls

After you have drawn the outline (e i j k m b c d e f g h a) of the Ground floor Plan, the next step will be the drawing of the exterior walls.
The wall consists of two lines, each defining one side of the wall.
As you can see in the Floor Plan (Fig.3.2.4.3), the thickness of the exterior wall is 0.30.

Create new Layers

Open the drawing h20221_gf_outline, and save it under the name h20221_gf_walls.
Now you have to create a new layer to use during the drawing of the walls.
• Create a new layer, with Name A-Wall, Color magenta, LineWeight 0.30, and make it current (Fig.3.2.4.1).

h20221 3241 layersPropManager exterWalls f24061151 p2Fig.3.2.4.1 - Layer - Properties manager

You will copy at the same position the “Ground floor Outline” (e i j k m b c d e f g h a) that you just have drawn to create the outside polyline of the exterior walls.
Then you will offset it inside this polyline and at a distance of 0.30 to create the second polyline of the walls.
To copy at the same position, the polyline (e i j k m b c d e f g h a), as shown in Fig.3.2.4.3:
• On Ribbon  ► Click Home tab ►Modify panel ►click the icon Copy  (Fig.2.4.4.1).
• Command Line prompt says > Select object: Select with your mouse the polyline (e i j k m b c d e f g h a), and press ENTER.

h20221 3242 ribbon modify offset ft1543984 p2 Fig.3.2.4.2 – Ribbon – Offset

  • Command Line prompt says > Specify based point: Using the mouse, select point a.
    • Command line prompt says > Specify second point or []: Using the mouse select the point a to specify the second point of the movement and press ENTER.
    Now you have two polylines (e i j k m b c d e f g h a) at the same position on layer A-GroundFloor-Outl.
    • Click the Home tab ►Modify panel ►click Offset (Fig 3.2.4.2).
    • Select polyline (e i j k m b c d e f g h a),
    Select one of them, set its layer to A-Wall, and turn off the layer A-GroundFloor-Outline.
    • OFFSET polyline (e i j k m b c d e f g h a) to the inside to create the inner polyline of the walls, as shown in Fig.3.2.4.3.
    • On the Command prompt: Offset Specify offset distance or: type 0.30, and press ENTER, where 0.30 is the offset distance.
    • On the Command prompt: Offset Select object for offset: select polyline (e i j k m b c d e f g h a), and press ENTER.
    • On the Command prompt: Offset Specify point on side to: > select any point inside the polyline (e i j k m b c d e f g h a), and press ENTER.
    The result is shown in Fig.3.2.4.3.(without dimensions).

h20221 3243 groundFloor extWalls ft26001960 p2 Fig.3.2.4.3 - Draw the Exterior Walls