MULTI- VIEWS (ISOMETRIC)

http://www.engineeringessentials.com/ege/pic/pic_page1.htm

If an object is placed inside of a glass box and projected onto each side, when the glass box is unfolded, six views are shown in an orthographic arrangement.

NICE TO SEE: http://www.engineeringessentials.com/ege/ortho/ortho_page3.htm

Each side of an unfolded cardboard box is oriented similar to orthographic projection views.

Three basic projection planes are used to explain multi view drawings.

The views of a multi view drawing are systematically arranged so anyone can imagine the object.

Looking at a three-dimensional object, you must be able to see the orthographic views of the object.

Multi view projection drawings

Architecture Orthographical Drawings

LINES TYPE

LINE TYPES • Visible lines

Visible lines represent visible edges and boundaries.

Continuous and thick (0.5 - 0.6 mm).

• Hidden lines Hidden lines represent hidden edges and boundaries.

Dashed and medium thick (0.35 - 0.45 mm).

• Center lines Center lines Represent axes of symmetry.

Long dash – short dash and thin (0.3 mm).

• Dimension and Extension lines

Dimension and extension lines are used to show the size of an object. In general, a dimension line is placed between two extension lines and is terminated by arrowheads, which indicates the direction and extent of the dimension.

The line type is continuous and the line weight is thin (0.3 mm).

TEST: http://www.engineeringessentials.com/ege/ortho/ortho_page5_ex1.htm

LINE TYPES

SURFACES PROJECTION

A flat surface is oriented perpendicular, parallel, or inclined to a plane of projection.

Cylindrical surfaces. A flat surface is often tangent to a curved surface, as shown in B and D.

• A—This object has normal surfaces.

• B—This object has normal and inclined surfaces.

ORTHOGRAPHIC PROJECTION Drawing Steps

Isometric drawing quiz

1

2

3

4

5

6

7

8

V

9

10

11

12

11 13

14

15 What is the correct view from the red point?

16

17

18

19

20

Answers

• 1-> A • 2-> B • 3-> C • 4-> A • 5-> C • 6-> B • 7-> A • 8-> C • 9-> C • 10-> C

• 11-> B • 12-> A • 13-> D • 14-> B • 15-> C • 16-> C • 17-> B • 18-> A • 19-> D • 20-> B