SKETCHING UNIT III ESSENTIAL STANDARD: 3.00 APPLY SKETCHING SKILLS AND TECHNIQUES (ARCHITECTURE AND ENGINEERING) INDICATOR: 3.01 APPLY ROUGH SCKETCHING (LETTER FOR CLARITY,
UPPERCASE CAPS) INDICATOR 3.02 APPLY 2D SKETCHING SINGLE AND MULTI VIEW INDICATOR 3.03 APPLY 3D SKETCHING PICTORALS (ISOMETRIC, OBLIQUE) INTRODUCTION
This unit will cover the purpose of sketching, materials needed for sketching, techniques for sketching, importance of proportions, the types of sketches and differences between isometric, oblique and perspective sketches. PURPOSE OF A SKETCH
Quickly & easily get an idea on paper Design sketches Freehand technical sketches Technical illustrations DESIGN SKETCHES
Rough sketches that are used to quickly capture an idea. They tend to have less detail, structure, and restrictions than free hand or technical illustrations. FREEHAND TECHNICAL SKETCHES Freehand technical
sketches can be Multiview or pictorial sketches. This type of sketch usually includes more detail and structure than design sketches. They also typically
include dimensions. TECHNICAL ILLUSTRATIONS Technical illustrations include more detail, Structure, and Restrictions than other types of sketches. The objective here is to create a sketch that looks as close to the final object as possible.
WHAT TYPE OF SKETCH IS THIS? SKETCHING MATERIALS Paper Plain Grid
Pencil Soft lead REQUIRED CONSISTENCIES Clarity Proportion
TECHNIQUES STRAIGHT LINES VERTICLE HORIZONTAL CIRCLES START WITH A SQUARE FIND THE MIDPOINTS OF EACH SIDE,
AND CONNECT THE MIDPOINTS WITH ARCS. ANGLES 30, 45, 60 DEGREE ANGLES. LINES VERTICAL LINES
TOP TO BOTTOM HORIZONTAL LINES LEFT TO RIGHT SKETCHING CIRCLES AND ARCS BEGIN BY LIGHTLY CONSTRUCING A SQUARE THEN CONNECT IN CIRCULAR MOTION AT THE 90 DEGREE POINTS
SKETCHING ANGLES BEGIN WITH A 90 ANGLE SKETCHING CLASSES OF SKETCHES SINGLE-VIEW
MULTI-VIEW PICTORALS SINGLE-VIEW SKETCHING TECHNICAL PURPOSES FRONT VIEW HAS THE MOST DESCRIPTIVE
FEATURES ON IT. ORTHOGRAPHIC PROJECTION a means of representing a three-dimensional object in two dimensions. It is a form of parallel projection, where all the projection lines are orthogonal to the projection plane, resulting in every plane of
the scene appearing in affine transformation on the viewing surface. STEPS FOR SINGLE-VIEW SKETCHING MULTI-VIEW SKETCHING TECHNICAL SKETCH
FRONT VIEW TOP VIEW SIDE VIEW MITER LINE Miter Line45 degree line draw between the
top view and right side view. PICTORIAL SKETCHES QUICKLY COMMUNICATE AND IDEA THREE DIMENSIONS IN ONE VIEW
WIDTH HEIGHT DEPTH PICTORIAL SKETCHES THREE (3) TYPES ISOMETRIC
OBLIQUE PERSPECTIVE ISOMETRIC SKETCH ISOMETRIC SKETCHING THREE EQUALLY SPACED AXES OF 120
DEGREES ISOMETRIC SKETCHING RECEDING LINES TYPICALLY 30 OFF HORIZONTAL
ISOMETRIC SKETCHING ELLIPSE!! The Isometric Circle!!!! ELLIPSEOval shaped, elongated
along one axis ISOMETRIC ELLIPSES CORRECT ELLIPSE ORIENTATION
ISOMETRIC SKETCHING NONISOMETRIC LINES LOCATE END POINTS AND CONNECT. Draw what you know and then
Connect the dots!! D EP TH
HEIGHT OBLIQUE SKETCH WIDTH OBLIQUE SKETCHING
FRONT VIEW IS DRAWN TRUE SHAPE AND SIZE
OBLIQUE SKETCHING RECEDING EDGES ARE USUALLY DRAWN AT AN ANGLE OF 30, 45, or 60
OBLIQUE SKETCHING CIRCLES AND CURVES DRAWN ON FRONTAL PLANE WILL APPEAR TRUE
SHAPE AND SIZE OBLIQUE SKETCHING Cavalier Oblique Sketch an oblique sketch where the receding lines are drawn to true length. Cabinet Oblique sketch- an oblique sketch where the receding line are drawn
at of there true length. PERSPECTIVE SKETCHES 1-Point Perspective 2-Point Perspective
PERSPECTIVE SKETCHES OBJECTS APPEAR AS THE EYE WOULD SEE THEM MOST REALISTIC TYPE OF PICTORIAL SKETCH MOST DIFFICULT PICTORAL SKETCH TO DRAW
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