instructor: dr.ashok kaushal e-mail: ashok kaushal...
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![Page 1: Instructor: Dr.Ashok Kaushal E-mail: ashok kaushal ...users.encs.concordia.ca/~kaushal/CONTED/CI-811-acad...Dr. Ashok Kaushal 1 AutoCAD Level I Instructor: Dr.Ashok Kaushal E-mail:](https://reader031.vdocument.in/reader031/viewer/2022021819/5ac6e0367f8b9acb7c8b767a/html5/thumbnails/1.jpg)
Dr. Ashok Kaushal1
AutoCAD
Level I
Instructor: Dr.Ashok KaushalE-mail: [email protected]
Topics Pline, Pedit, Dimensioning, Model & Paper
Space
Continuing Education Department
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Dr. Ashok Kaushal2
AutoCAD
Level IPline1. Command: Pline Arc/Close/Halfwidth/Length/Undo/Width/
<Endpoint of line>:• Arc = a change from line entry to arc entry• Close = a closed pline, in which the first point will be
joined to the last entered point in the pline to make a closed object; more than two points are needed to have a closed pline
• Halfwidth = a specified halfwidth on either side of the pline vector
• Length = the length of the pline• Undo = an undo of the last point entered• Width = a specified width of the line or arc segments on
either side of the pline vector
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Dr. Ashok Kaushal3
AutoCAD
Level IPline
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Dr. Ashok Kaushal4
AutoCAD
Level IPline - Results
![Page 5: Instructor: Dr.Ashok Kaushal E-mail: ashok kaushal ...users.encs.concordia.ca/~kaushal/CONTED/CI-811-acad...Dr. Ashok Kaushal 1 AutoCAD Level I Instructor: Dr.Ashok Kaushal E-mail:](https://reader031.vdocument.in/reader031/viewer/2022021819/5ac6e0367f8b9acb7c8b767a/html5/thumbnails/5.jpg)
Dr. Ashok Kaushal5
AutoCAD
Level IPedit1. Command: Pedit
Close/Join/Width/Edit vertex/Fit/ Spline/Decurve/ Ltype gen/Undo/Exit<x>• Close = close an open polyline• Join = join lines, arcs or other polylines to the polyline one is editing• Width = changes the width of a polyline• Edit vertex = move,add or remove vertices• Fit = fits a polyline• Spline = create a splined curve• Decurve = remove a curve• Ltype gen = generate a linetype• Undo = undoes the last pedit one step at a time• Exit = exit the pedit command
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Dr. Ashok Kaushal6
AutoCAD
Level IPedit with Join, Fit & Spline
![Page 7: Instructor: Dr.Ashok Kaushal E-mail: ashok kaushal ...users.encs.concordia.ca/~kaushal/CONTED/CI-811-acad...Dr. Ashok Kaushal 1 AutoCAD Level I Instructor: Dr.Ashok Kaushal E-mail:](https://reader031.vdocument.in/reader031/viewer/2022021819/5ac6e0367f8b9acb7c8b767a/html5/thumbnails/7.jpg)
Dr. Ashok Kaushal7
AutoCAD
Level IPedit with Join, Fit & Spline - Results
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Dr. Ashok Kaushal8
AutoCAD
Level IDimensioningBasic principals1.Each dimension required for the accurate
definition of a feature should appear only once in the drawing.
2.The reader of the drawing should not be required to do a calculation in order to obtain the dimension of a feature.
3.Place dimensions in the front, side, top or section views and not in the isometric view.
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Dr. Ashok Kaushal9
AutoCAD
Level IDimensioning - Main Options
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Dr. Ashok Kaushal10
AutoCAD
Level IDimensioning - DIM - Horizontal, Vertical & Aligned
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Dr. Ashok Kaushal11
AutoCAD
Level IDimensioning - DIM - Horizontal, Vertical & Aligned - Results
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Dr. Ashok Kaushal12
AutoCAD
Level IDimensioning - DIMlinear- Horizontal & Vertical
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Dr. Ashok Kaushal13
AutoCAD
Level IDimensioning - DIMlinear- Horizontal & Vertical
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Dr. Ashok Kaushal14
AutoCAD
Level IDIMlinear & DIMaligned
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Dr. Ashok Kaushal15
AutoCAD
Level IDIMlinear & DIMaligned Results
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Dr. Ashok Kaushal16
AutoCAD
Level IDimangular
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Dr. Ashok Kaushal17
AutoCAD
Level IDimangular - Results
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Dr. Ashok Kaushal18
AutoCAD
Level IDimradius & Dimdiameter
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Dr. Ashok Kaushal19
AutoCAD
Level IDimradius & Dimdiameter - Results
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Dr. Ashok Kaushal20
AutoCAD
Level IDimcontinue
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Dr. Ashok Kaushal21
AutoCAD
Level IDimcontinue - Results
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Dr. Ashok Kaushal22
AutoCAD
Level IDimbaseline
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Dr. Ashok Kaushal23
AutoCAD
Level IDimbaseline - Results
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Dr. Ashok Kaushal24
AutoCAD
Level IDimcenter & Leader
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Dr. Ashok Kaushal25
AutoCAD
Level IDimcenter & Leader - Results
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Dr. Ashok Kaushal26
AutoCAD
Level IFigure 5.1
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Dr. Ashok Kaushal27
AutoCAD
Level IModel SpaceThe two spaces that AutoCAD provides are model space and paper
space. • When you start AutoCAD and begin a drawing, model space is
active by default. • Objects that represent the subject of the drawing (model
geometry) are normally drawn in real world units in model space.
• Dimensioning is also performed in model space because it is directly associated to the model geometry.
• This usually means that some items such as text, title blocks and borders that are drawn or inserted (blocks or Xrefs) must be oversized or undersized to fit correctly on the sheet of paper.
• Since model space represents the actual real world model size, plotting from model space requires selecting an appropriate scale in the plot menu to fit the paper actually used (or using the scale to fit option).
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Dr. Ashok Kaushal28
AutoCAD
Level IPaper Space• Paper space represents the paper that you plot or print on. • When you enter paper space for the first time, you see a blank "sheet." • In order to see any model geometry, viewports in paper space must be
created with the Mview command (like cutting rectangular holes) so you can "see" into model space.
• Any number or size of rectangular-shaped viewports can be created in paper space.
• Since there is only one model space in a drawing, you see the same model space geometry in each viewport.
• You can, however, control which layers are Frozen and Thawed andthe scale of the geometry displayed in each viewport.
• Since paper space represents the actual paper used for plotting, plot from paper space at a scale of 1=1.
• With paper space enabled, the Mspace (Model Space) and Pspace(Paper Space) commands allow you to switch between paper space and model space so you can draw or edit in either space.
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Dr. Ashok Kaushal29
AutoCAD
Level IReasons for Paper SpacePaper space should be used if you want to prepare plots with multiple views or multiple drawings as listed here:
• Use paper space to plot several views of the same drawing on one sheet, possibly in different scales, such as a main view and a detail.
• Use paper space to plot several drawings on one sheet. This action is accomplished by using Xref to bring several drawings into model space and by using layer visibility control to display individual drawings in separate viewports.
• Use paper space to plot different views (e.g., top, front, side) of a 3D model on one sheet.
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Dr. Ashok Kaushal30
AutoCAD
Level IMview
Command: mviewON/OFF/Hideplot/Fit/2/3/4/Restore/<First Point>:
First Point - This action creates one rectangular viewport between the diagonal corners specified.
ON - Turns on the display of model space geometry in the selected viewport. Select the desired viewport to turn on.
OFF -Turns off the display of model space geometry in the selected viewport with this option. Select the desired viewport to turn off.
Hideplot - Hideplot causes hidden line removal in the selected viewport during a plot. This is used for 3D surface or solid models. Select the desired viewport.
Fit - Fit creates a new viewport and fits it to the size of the current display. If you are Zoomed in paper space, the resulting viewport is the size of the Zoomed area. The new viewport becomes the current viewport.
Restore - Use this option to create new viewports in the same relative pattern as a named tiled viewport
2/3/4 -These options create a number of viewports within a rectangular area that you specify. – The 2 option allows you to arrange 2 viewports either Vertically or Horizontally.– The 4 option automatically divides the specified area into 4 equal viewports.– Using the 3 option yields the following prompt: Horizontal /Vertical /Above
/Below /Left/<Right>
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Dr. Ashok Kaushal31
AutoCAD
Level IZoomCommand: ZOOMAll/Center/Dynamic/Extents/Left/Previous/Vmax/Window/<Scale(X/XP)>
3 Scaling optionsZOOM # - Typing a number at the Zoom prompt changes your view
magnification relative to the limits of the drawing. ZOOM #X - The second scale option is to specify an X after the scale factor
which will zoom relative to your current view. ZOOM #XP - The third scale option scales model space graphics relative to
paper space. Typing 2XP scales the model space drawing units to twice the paper space units. This would be like plotting at 2=1 or 2:1. One unit in model space would plot with a length of two units in paper space.
Note: It is the viewport zoom magnification that is scaled relative to paper space, not the plot or the model. It is recommended that the drawing be plotted one to one: 1= 1 at the plot command.
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Dr. Ashok Kaushal32
AutoCAD
Level IDisplay Scaling of Paper Space Viewports
4=1 Zoom 4/1xp2=1 Zoom 2/lxp1=2 Zoom 1/2xp1=4 Zoom 1/4xp1"=2.54mm Zoom .3937xp2.54mm = 1" Zoom 2.54xp
3"= 1' Zoom 1/4xp3/4"= 1' Zoom 1/16xp1/2"= 1' Zoom l/24xp3/8"= 1' Zoom 1/32xp1/4"= 1' Zoom 1/48xp1/8"= 1' Zoom 1/96xp