Chapter 5 Architectural Lines and Lettering. 2 Links for Chapter 5 Types of Lines Line Techniques...

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Transcript of Chapter 5 Architectural Lines and Lettering. 2 Links for Chapter 5 Types of Lines Line Techniques...

  • Chapter 5Architectural Lines and Lettering

  • Links for Chapter 5Types of LinesLine TechniquesLines with CADDLettering

  • Line CharacteristicsEach line conveys a particular meaningThicker lines are more dominant and intended to be seenThinner lines are subordinate but just as importantLighter lines are used as guides for drawing other features or for lettering properly

  • Types of LinesConstruction lines - Used for drawing layout and drawn lightlyGuidelines - Used to properly align lettersObject lines - Drawn to define outline and characteristic featuresHidden lines - Represents features that are not visible

  • Types of LinesExtension lines - Shows the extent of the dimensionDimension lines - Shows the length of the dimensionLeader lines - Used to connect notes to related featuresBreak lines - Drawn freehand to show the termination of a feature

  • Examples of Lines

  • Line TechniquesPrepare sketches before beginning drawingDo layout with construction linesMake all horizontal lines on drawing firstDraw all vertical linesPlace symbols on accordinglyAdd lettering and keep drawing clean

  • Pencil Line Methods on VellumAll lines should be consistently dark and crispUse a lead of proper hardnessRotate mechanical pencil and hold at 45Maintain a constant pressure on the pencilDraw all lines only once or double lines may occur

  • Polyester Lead Methods on FilmPolyester lead is faster than ink and is better qualityAlways draw on the mat sideDraw lines in one directionUse a light touch to reduce smearing and embossingUse a vinyl eraser to remove lines

  • Inking on Film or VellumInk on the matted sideInk is wet until it turns from shiny to dullUse spacers on drafting equipment

  • Hints for InkingHold the pen perpendicularMove pen at a constant speedAllow the pen to flow easilyUse spacer under the drafting toolsPeriodically check the pen for leaksKeep reservoir 1/4 to 3/4 fullShake pen lightly to get the ink flowing

  • Lines with CADDLines are drawn using the LINE command between two Cartesian coordinate pointsThe Cartesian Coordinate SystemGrid with one unit blocksThe Y axis is verticalThe X axis is horizontalX=0 and Y=0 is the origin

  • Coordinate SystemsAbsolute Coordinate SystemAll points are measured from the origin (0,0)Relative Coordinate SystemPoints are located from the previous pointsUse the @ symbol to add these [email protected],1 - draw line to the left three units and down one unit

  • Coordinate SystemsPolar Coordinate SystemPoints are located from the previous points as a distance and an angleUse the @ symbol to indicate the distanceUse the < symbol to indicate the [email protected]
  • Picking Points with CursorGRID show the grid layout on the screenSNAP forces the cursor to snap to a designated distanceCoordinates are displayed for quick reference in the coordinate display window

  • Lettering TermsComposition - Spacing, layout, and appearance of the textJustify - Text alignmentFont - An assortment of one size and style of lettering or textStyle - A set of text characters

  • Metric Lettering RulesGive unit names in lower case (mm, m, kg)Give proper names in upper case (K, Pa, N)Leave space between symbol and number (21 mm)Do not use plural metric symbols (m not ms)Do not mix names and symbols

  • General Lettering TipsBe conservative with letters and do not add to much flair to the lettersKeep letters consistentUse guidelinesMinimum size is 1/8 Titles are 3/16 or 1/4

  • More Lettering TipsUse 0.5mm automatic pencil with H, F, or HB leadRest hand on clean protective sheetKeep vertical lines farther apart than angles or curved linesRelax and be comfortableSlanted letters should be at about 68

  • Lettering EquipmentUse an Ames Lettering Guide for guidelinesLettering machines can be used to produce drawing titles, labels, or special headingsTransfer letters and symbols are individually burnished onto the drawing Sticky back letters are produced on a computer and adhered to the drawing

  • CADD LetteringText is consistently placed in shape and sizeText is easily modifiedTEXT command is used to specify the text characteristicsScale factor establishes the scale between the drawing and the textInsertion point indicates where the text starts