AutoCAD: Secrets Every User Should Know Chapter 4 – Applying Graphics Standards

Dimensions Anonymous Blocks –Defined by AutoCAD –Names begin with *D –Not listed as blocks Don't Explode –Can't redefine –Won't update with edits 2

Dimensions Associativity DIMASO Is the Old Variable DIMASSOC Is the New 0All dimension exploded (DON’T) 1 Dimensions are blocks but associated only with defpoints 2 Dimensions associated with geometry, even when in Paper Space 3

Dimensions Default Dimension Style –Imperial: STANDARD –Metric: ISO-25 Neither One Meets Standards Use a Different Name for Your Dimension Styles 4

Dimensions Custom Arrow Head –Draw one unit long, pointing right –Create a block with point as insertion –Select "User Arrow" in style 5

Dimension Styles Decimal Inch –Dimension Style Manager 6

Dimension Styles Decimal Inch –Lines tab 7

Dimension Styles Decimal Inch –Symbols and Arrows tab 8

Dimension Styles Decimal Inch –Text tab 9

Dimension Styles Decimal Inch –Fit tab 10

Dimension Styles Decimal Inch –Primary Units tab 11

Dimension Styles Decimal Inch –Alternative Units tab Seldom used Not allowed on military spec drawings When used, generally scale 25.4 –Tolerances tab Use when tolerance applied Classes of fit 12

Dimension Styles Decimal Inch –Child variations Radius Diameter 13

Dimension Styles Decimal Inch –Child variations 14

Dimension Styles ASME Metric and ISO –Start with decimal inch –Soft conversions 0.04 is approximately 1mm (1/16") approximately 1.5mm (1/8") approximately 3mm 0.25 (1/4') approximately 6mm (3/8") approximately 9mm 0.5 (1/2") approximately 12mm 15

Dimension Styles Architectural –Lines tab 16

Dimension Styles Architectural –Symbols and Arrows tab 17

Dimension Styles Architectural –Text tab (city blueprint, country blueprint, hand1, or romans 18

Dimension Styles Architectural –Fit tab 19

Dimension Styles Architectural –Primary Units tab 20

Dimension Styles Architectural –Alternate Units tab Seldom used –Tolerances tab Not Used 21

Dimension Styles Architectural –Child variations Radius, Diameter, and Linear 22

Dimension Styles Architectural –Linear Text tab 23

Dimension Styles Architectural –Linear Fit tab 24

Dimension Styles Civil Surveying –Lines tab 25

Dimension Styles Civil Surveying –Text tab 26

Dimension Styles Civil Surveying –Using on drawing 27

Dimension Styles Civil Surveying –Using on drawing 28

Dimension Rules Common Errors 29

Dimension Rules Acceptable Application 30

Text Two types of fonts –Shape fonts SHX Vector-based AutoCAD –TrueType fonts (TTF) Raster-based Windows Letter Height –General: 0.12", 3mm –Titles: 0.24", 6mm 31

Text Don't Use Name “Standard” Acceptable Fonts - Mechanical –NOT txt.shx –Romans.shx Acceptable Fonts - Architectural –Romans.shx –Blueprint font 32

Linetypes and Weights Hidden Line Conventions 33

Linetypes and Weights Center Lines and Marks –Often incorrect in AutoCAD 34

Linetypes and Weights Center Lines and Marks –Use DCE for proper marks and editing without exploding 35

Linetypes and Weights Circular Center Mark –ARRAY them yourself 36

Linetypes and Weights Lineweights –Object lines Thick (0.4mm - 0.5mm) –Other lines Thin (0.2mm mm) –Architectural May have four to seven lineweights 37

AutoCAD Defaults 38

Applying Standards 39

Template Drawing Location 40

Use QNEW 41

Contents of Template File Layers –Colors, linetypes, lineweights –Layer filters, saved states Dimension Style Limits and Units Text Styles ( not STANDARD) General Block Definitions 42

Contents of Template File Views and Viewports Layouts for Each Sheet Size Default Plot Styles/Pen Styles System Variables (Not Registry) –AUPREC and LUPREC –LTSCALE, PSLTSCALE –MEASUREMENT –And so on 43

Layer Naming - Commercial Architecture AIA –Discipline –Major group –Minor group –Status –User defined Example A-WALL-DIMS-NEWW 44

Layer Naming - Residential Architecture Can use AIA Might Have Simpler Standard For Example FL1-DIM FL2-DIM FND-DIM 45

Layer Naming General Reserve Layer 0 for Defining Blocks Use Part-Based Layer Names for Assemblies Use Logical Field Names –Easier to manage with wildcards 46

Click to edit Master title style Click to edit Master text styles –Second level Third level –Fourth level »Fifth level 47