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AUTOCAD IN

CIVIL ENGINEERING DRAWINGS

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1. Drawing Tools

a) Lines :

Draw menu: line

Command line: line

Specify first point: Specify a point or press ENTER to continue from the last drawn line

or arc

Specify next point or [Close/Undo]:

b) Circles :

Draw menu: Circle

Command line: circle

Specify center point for circle or [3P (Three Points)/2P (Two Points)/Ttr (tan tan radius)]:

Specify a point or enter an option

c) Arc :

Draw menu: arc

Command line: arc

Specify start point of arc or [CEnter]:Specify a point, enter ce, or press ENTER tostart

tangent to last line, arc, or polyline

d) Polyline:

Draw menu: polyline

Command line: pline

Specify start point: Specify a point (1)

Current line-width is

Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]: Specify a point (2) or

enter an option

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e) Multiline :

Draw menu: multiline

Command line: mline

Current settings: Justification = current, Scale = current, Style = current

Specify start point or [Justification/Scale/STyle]: Specify a point or enter an option

f) Polygon :

Draw menu: Polygon

Command line: polygon

Enter number of sides : Enter a value between 3 and 1024 or press ENTER

Specify center of polygon or [Edge]: Specify a point (1) or enter e

g) Rectangle:

Draw menu: Rectangle

Command line: rectang or rectangle

Specify first corner point or [Chamfer/Elevation/Fillet/Thickness/Width]: Specify a point

or enter an option

h) Spline :

Draw menu: Spline

Command line: spline

Specify first point or [Object]: Specify a point or enter o

i) Ellipse :

Draw menu: Ellipse

Command line: ellipse

Specify axis endpoint of ellipse or [Arc/Center/Isocircle]: Specify a point or enter an

option

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2. Modify Tools

a) Erase :

Modify menu: Erase

Command line: erase

Select objects: Use an object selection method and press ENTER when you finish selecting

objects

b) Copy :

Modify menu: Copy

Command line: copy

Select objects: Use an object selection method and press ENTER when you finish

Specify base point or [Displacement]: Specify a base point or enter d

c) Mirror :

Modify menu: Mirror

Command line: mirror

Select objects: Use an object selection method and press ENTER to finish

Specify first point of mirror line: Specify a point

Specify second point of mirror line: Specify a point

Erase source object? [Yes/No]:

d) Offset :

Modify menu: Offset

Command line: offset

Specify offset distance or [Through/Erase/Layer] :Specify a distance, enter an

option, or press ENTER

e) Array :

Modify menu: Array

Command line: array

Select objects: Use an object selection method

Enter the type of array [Rectangular/Polar] : Enter an option or press ENTER

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f) Move :

Modify menu: Move

Command line: move

Select objects: Use an object selection method and press ENTER when you finish

Specify base point or [Displacement]: Specify a base point or enter d

Specify second point or : Specify a point or press ENTER

g) Rotate :

Modify menu: Rotate

Command line: rotate

Current positive angle in UCS: ANGDIR=current ANGBASE=current

Select objects: Use an object selection method and press ENTER when you finish

Specify base point: Specify a point

Specify rotation angle or [Copy/Reference]: Enter an angle, specify a point, enter c, or enter r

h) Scale :

Modify menu: Scale

Command line: scale

Select objects: Use an object selection method and press ENTER when you finish

Specify base point: Specify a point

i). Stretch :

Modify menu: Stretch

Command line: stretch

Select objects to stretch by crossing-window or crossing-polygon...

Select objects: Use the crossing object selection method, and press ENTER. Individually

selected objects and objects that are completely enclosed by the crossing selection are moved

rather than stretched

j). Lengthen :

Modify menu: Lengthen

Command line: lengthen

Select an object or [DElta/Percent/Total/DYnamic]: Select one object, enter an option, or

press ENTERto end the command

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k). Trim :

Modify menu: Trim

Command line: trim

Current settings: Projection = current Edge = current

Select cutting edges...

Select objects or : Select one or more objects and press ENTER, or press ENTER

to select all displayed objects

l). Extend :

Modify menu: Extend

Command line: extend

Select boundary edges...

Select objects or : Select one or more objects and press ENTER, or press ENTER

to select all displayed objects

Select object to extend or shift-select to trim or [Fence/Crossing/Project/Edge/Undo]: Select

objects to extend, or hold down SHIFT and select an object to trim, or enter an option

m). Break :

Modify menu: Break

Command line: break

Select object: Use an object selection method, or specify the first break point (1) on an object

Specify second break point or [First point]: Specify the second break point (2) or enter f

n). Chamfer :

Modify menu: Chamfer

Command line: chamfer

(TRIM mode) Current chamfer Dist1 = current, Dist2 = current

Select first line or [Undo/Polyline/Distance/Angle/Trim/mEthod/Multiple]: Use an object

selection method or enter an option

p). Fillet :

Modify menu: Fillet

Command line: fillet

Current settings: Mode = current, Radius = current

Select first object or [Undo/Polyline/Radius/Trim/Multiple]: Use an object selection method

or enter an option

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3. Using Text

a). Single line text :

draw menu: Single line text

Command line: text

Current text style: current Current text height: current

Specify start point of text or [Justify/Style]: Specify a point or enter an option

b). Multiline text :

draw menu: multiline text

Command line: mtext

Current text style: current Text height: current

Specify first corner:

Specify opposite corner or [Height/Justify/Line spacing/Rotation/Style/Width]:

c). Spelling:

Tool menu : Spelling

Command line : spell

Select objects: Use an object selection method and press ENTER when you finish

d). Edit text :

Modify menu: Object Text Edit

Command line : ddedit

Select an annotation object or [Undo]:

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4. Special Features a) Dimension tools:

Dimensioning is the process of adding measurement annotation to a drawing.

You can create dimensions for a variety of object types in many orientations. The basic types of dimensioning are

Linear

Radial (radius and diameter)

Angular

Ordinate

Arc Length

Linear dimensions can be horizontal, vertical, aligned, rotated, baseline, or continued (chained).

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b) View tools:

Creates a view.

View Name

Specifies the view name. View names can have up to 255 characters and can include letters,

numbers, blank spaces, and any special character not used by Microsoft Windows and this

program for other purposes.

View Category

Specifies a category for the named view; for example, Elevations or Sections. Select a view

category from the list, enter a new category, or leave this option empty.

If the category of a named view is changed in the Sheet Set Manager, the change is displayed in

the View dialog box the next time the drawing file is opened.

Current Display

Uses the current display as the new view.

Define Window

Uses a window as the new view, defined in the drawing area by specifying two opposite corners.

Define View Window Button

Temporarily closes the dialog boxes so that you can use the pointing device to define the

opposite corners of the new view window.

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c) Layers concept:

Displays a list of the layers in the drawing and their properties. You can add, delete, and rename

layers, change their properties, or add descriptions. Layer filters control which layers are

displayed in the list and can also be used to make changes to more than one layer at a time.

New Property Filter

Displays the Layer Filter Properties dialog box, where you can create a layer filter based on one

or more properties of the layers.

New Group Filter

Creates a layer filter that contains layers that you select and add to the filter.

Layer States Manager

Displays the Layer States Manager, in which you can save the current property settings for layers

in a named layer state and then restore those settings later.

New Layer

Creates a new layer. The list displays a layer named LAYER1. The name is selected so that you

can enter a new layer name immediately. The new layer inherits the properties of the currently

selected layer in the layer list (color, on or off state, and so on).

Delete Layer

Marks selected layers for deletion. Layers are deleted when you click Apply or OK. You can

delete only unreferenced layers. Referenced layers include layers 0 and DEFPOINTS, layers

containing objects (including objects in block definitions), the current layer, and xref-dependent

layers.

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d) Hatching:

draw menu: Hatch

Command line: hatch

Defines the boundaries, pattern type, pattern properties, and other parameters for hatch and gradient fill objects.

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e). Customizing Toolbar:

Some of the simplest toolbar customizations can make your daily drawing tasks more

efficient. For example, you can consolidate frequently used buttons onto one toolbar, remove

or hide toolbar buttons that you never use, or change some simple toolbar properties.

You can also specify information to be displayed when the cursor passes over a button.

You can add buttons to toolbars, remove buttons you use infrequently, and rearrange buttons

and toolbars. You can also create your own toolbars and flyout toolbars, and create or change

the button image associated with a toolbar command.

f). Working with multiple drawings :

You can have multiple documents open at same time in Autocad. This can be easily helpful,

if you want to exchange the some parts of the drawings between the files or if you want

another file for reference.

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