ONE

1
ONE TWO-POINT PERSPECTIVES

• Objectives
• The student will be able to illustrate examples
  of one-point perspectives using the principles of
  Architectural Drafting.
• The student will be able to diagram interior
  spaces using perspective drawings to scale.
• The student will be able to design interior areas
  of buildings using the process of a one-point
  perspective to communicate ideas to building
  contractors and Engineers.

2
WARM UP ACTIVITY

• Computer-Aided Drafting - Students will log on to
  a computer station every day and open all
  appropriate programs. Then, set up Image page
  using Paint Application (Microsoft)
• Architectural Drafting - Students are expected to
  have 0.5 mm mechanical pencils and a technology
  education section notebook for this class.
  Students will copy all vocabulary terms from the
  board along with the definitions. Students will
  gather all drafting materials (t-square,
  triangle, ruler, masking tape, drafting boards,
  and 8 ½ x 11 sheets of paper. Students must
  set-up drawing sheets on their boards using their
  t-squares horizontally.

3
VOCABULARY

• One-Point Perspective A drawing in which the
  front view is drawn to its true scale and all
  receding sides are projected to a single
  vanishing point located on the horizon.
• Vanishing Point A point on a perspective
  drawing that all lines are projected towards. It
  is known as the point at which projection lines
  intersect on a perspective drawing.
• Pictorial Drawing A picture-like drawing that
  shows several sides of an object in one drawing.
  The two types of pictorial drawings are known as
  isometric and perspective.
• Isometric Drawing Drawings that are used
  extensively in mechanical engineering work. A
  realistic representation of a drawing in
  three-dimensions.

4
VOCABULARY

• Two-Point Perspective A drawing in which the
  receding sides are projected to two vanishing
  points, one on each end of the horizon line.
• Shading an area of relatively dark tone or close
  lines, dots, or hatching that produces darkness
  or shadow in a drawing or picture.
• Fade to lose or make something lose brightness,
  color, or loudness gradually
• Shadow a darkened shape on a surface that falls
  behind somebody or something blocking the light

5
VOCABULARY

• Rendering an architects representation of the
  inside and outside of a finished building, drawn
  in perspective
• Blending to shade from one color to another
  without obvious transitions and boundaries to
  mix different substances together so that they do
  not readily separate
• Stipple to give something, for example, wet
  paint or plaster, a rough grainy texture with
  dabbing strokes
• Texture the feel and appearance of a surface,
  especially how rough or smooth it is
• Sketch a drawing or painting that is done
  quickly without concern for detail.

6
Vertical Placement

• The distance an object is placed above or below
  the horizon line affects the amount of distortion
  in the line drawing. Moving an object a greater
  distance vertically from the horizon line has the
  same effect as moving the vanishing points closer
  together.
• Students will be expected to create
  three-dimensional objects changing the
  horizontal-line and vertical placement of each
  drawing.

7
Examples of Perspective Drawings using different
horizon lines
8
THE EFFECTS OF HORIZONTAL LINE PLACEMENT

• Horizon line above the vertical line

9
THE EFFECTS OF HORIZONTAL LINE PLACEMENT

• Horizon line below the vertical line

10
THE EFFECTS OF HORIZONTAL LINE PLACEMENT

• Horizon line along the vertical line

11
ASSIGNMENTS

• Students must complete a one and two point
  perspective from the list below
• One-Point Perspectives
• Living Room
• Sitting Room
• School Hallway
• Urban Alley
• Two-Point Perspective
• Commercial Office Building

12
INDEPENDENT PRACTICE

• Students will log on to a computer station every
  day and open all appropriate programs
• Set up Image page using Paint Application
  (Microsoft)
• Draw the front view of the object (building).
  Draw the horizon line above, below, or through
  the building.
• Mark the position of the vanishing point on the
  horizon line to the left if you want to see the
  left side of the building to the right if you
  want to see the right side of the building to
  the rear if you want to see only the front.
• Project all corners of the front view to the
  vanishing point.
• Save all work on a flash drive daily (provided by
  the teacher)

13
INDEPENDENT PRACTICE

• Estimate the depths of the receding sides, and
  draw a vertical line parallel with the vertical
  lines of the front view to indicate the back
  corner of the building.
• Make all object lines heavy, and eradicate the
  horizon line and projection lines leading to the
  vanishing point.
• Each student will continue the series of drawings
  until completion. Students are expected to clean
  up their areas (desk) and return all materials
  before leaving the classroom.
• Employability skills are included within the
  grades of each project and listed in the course
  syllabus. These skills account for 10 of
  students grade.

14
GRADING RUBRICS

• 40 - Quality of lines Precision Accuracy
• 20 - Level of use for computers Functional
  use Precise of the scale rule
• 20 - Level of neatness Drawings must be neat
  (without erasures, partials, etc.)
• 20 - Effective use of time Arrive to class on
  time, log in to a computer station, etc.