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Sketching

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Pictorial Sketch of Kitchen. Isometric Drawings. The most common pictorials ... Often used for drawing cabinets. Cabinet Oblique Drawing. Perspective Drawings ... – PowerPoint PPT presentation

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Title: Sketching


1
Sketching Dimensioning
2
Pictorial Drawings
  • Shows an object like you would see in a
    photograph
  • Give a three dimensional view of a room or
    structure
  • Three common types
  • Isometric
  • Oblique
  • Perspective

3
Pictorial Sketch of Kitchen
4
Isometric Drawings
  • The most common pictorials
  • Constructed with the two faces 30 degrees above
    the horizontal
  • The axes are 120 degrees between each axis
  • Lines that are horizontal are drawn at 30 degrees
  • Vertical lines remain vertical

5
Isometric of a Cube
6
Isometric Dimensioning
  • Dimension lines are parallel to the isometric
    axes
  • Extension lines are extended in line with these
    axes

7
Isometric Dimensioning
8
Oblique Drawings
  • The front view is draw like it would be using
    orthographic projection
  • The front view shows all features with true shape
    and size
  • The top and side view are then projected back
    from the front view
  • Views can be at any angle
  • 15, 30 or 45 degrees are common

9
Oblique Drawings Cont.
  • Useful when the front contains more details and
    features than the side view
  • A mental image can be created more quickly than
    with orthographic alone
  • Two types of oblique drawings
  • cavalier
  • cabinet

10
Oblique Drawing
11
Cavalier Oblique
  • The entire drawing uses the same scale
  • Sometimes creates a distorted appearance

12
Cavalier Oblique Drawing
13
Cabinet Oblique
  • Measurements on the receding axes are reduced by
    half
  • More visually realistic representation
  • Often used for drawing cabinets

14
Cabinet Oblique Drawing
15
Perspective Drawings
  • The most realistic of all pictorial drawings
  • Receding lines in the drawing meet at a
    vanishing point instead of being parallel
  • Eliminates distortion at the back part of
    pictorial drawings
  • Two types
  • parallel (one-point) perspective
  • angular (two point) perspective

16
Perspective Drawing
17
Parallel Perspective (One Point)
  • One face of the object is shown as the front view
  • Lines parallel to the front view remain parallel
  • Lines that are perpendicular to the front view
    converge at a SINGLE VANISHING POINT

18
Angular Perspective (Two-Point)
  • Similar to isometric drawings
  • One edge of the object is place in front
  • The two faces that meet at this edge recede to
    DIFFERENT VANISHING POINTS
  • All lines parallel to each face go to the
    different vanishing points

19
Angular Perspective Drawing
20
Horizon Below Object
21
Exploded Pictorial Drawings
  • Used to show relative position of parts or
    construction details
  • Used to clarify assembly sequence
  • Common in appliance and cabinetry service manuals

22
Exploded Pictorial Drawing
23
Dimensioning Standards
  • Standards are different in different career
    areas.
  • Civil, Electrical, Construction and other areas
    follow similar practices, but sometimes with less
    need for precision in measurements.
  • Dimensioned drawings are a part of a contractual
    document.

24
Dimension Lines
  • Various means to terminating ends
  • arrow head
  • dot
  • tick
  • Normally, dimensions are shown ABOVE dimension
    line
  • If dimension is needed for construction, it
    should be on drawing
  • Do not included unnecessary dimensions

25
Types of Dimension Lines
26
Dimensioning Floor Plans
  • Frame Construction
  • dimensions usually start at the exterior surface
    of the stud wall
  • interior walls usually dimensioned to the center
    of partitions

27
Window and Door Openings
  • Frame Construction
  • Located by their center lines

28
Window and Door Openings
  • Masonry Construction
  • Openings are dimensioned to the edges of the
    masonry surface openings
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