es 1 proj 2

SECTION: THRU2 / THWX2 NAME: JUAN FIDEL B. CALAYWAN GRADE: 10.0

PLATE NO. Edge View and True Shape of PlanesES1

1NAME: MIKHAEL ANTHONY A. FELIPE SECTION: THQR GRADE: 17.1

Isometric Drawing

ISOMETRIC DRAWING An isometric drawing or isometric sketch is a drawing using the full length measurement of the actual object. However, in our case, the length of the multiview projection of the object.




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF NORMAL SURFACES Given the multiview projection, draw its corresponding isometric view.




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF NORMAL SURFACESBefore starting to create your construction lines, imagine first the figure or the object. In this case, the object should look like this (cubes and colors are used for better understanding).

1st Level

2nd Level

3rd Level1st Level

2nd Level3rd Level




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF NORMAL SURFACES Rectangular objects are easy to draw using glass box construction, which consists of imagining the object enclosed in a rectangular box whose sides coincide with the main faces of the object. Lightly draw the overall dimensions of the glass box. The edges of the box should all measure equal angles with each other. In other words, the base edge of the box should make 30° from the normal.

30° 30°




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF NORMAL SURFACES Draw the irregular features relative to the sides of the box.




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF NORMAL SURFACES Darken the final lines.




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF NORMAL SURFACES WITH HIDDEN SURFACES. Given the multiview projection, draw its corresponding isometric view. Note: hidden lines only exist in the multiview projection and not in an isometric view.




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF NORMAL SURFACES WITH HIDDEN SURFACES. Your imagined object should look something like this…

Hidden line

Hidden line

Removed block produces hidden line PRP/HRP

Removed block produces hidden line FRP/HRP




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF NORMAL SURFACES WITH HIDDEN SURFACES. Lightly draw the overall dimensions of the glass box.




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF NORMAL SURFACES WITH HIDDEN SURFACES. Locate main areas to be removed from the overall block lightly sketch along the main edges of the box to define portion to be removed.




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF NORMAL SURFACES WITH HIDDEN SURFACES. Lightly block in any remaining major portions to be removed through the whole block. Lightly block in features to be removed from the remaining shape along the main edges of the box.




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF NORMAL SURFACES WITH HIDDEN SURFACES. Darken final lines.




Isometric Drawing

ISOMETRIC DRAWING OF NORMAL SURFACES: EXAMPLE ^_^ Given the multiview projection, draw its corresponding isometric drawing.




Isometric Drawing

ISOMETRIC DRAWING OF NORMAL SURFACES: EXAMPLE ^_^ Start with a glass box.




Isometric Drawing

ISOMETRIC DRAWING OF NORMAL SURFACES: EXAMPLE ^_^ Locate the main areas to be removed from the overall block.




Isometric Drawing

ISOMETRIC DRAWING OF NORMAL SURFACES: EXAMPLE ^_^ Lightly sketch along the edges of the box to define portion to be removed.




Isometric Drawing

ISOMETRIC DRAWING OF NORMAL SURFACES: EXAMPLE ^_^ Darken final lines.




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF INCLINED SURFACES WITH HIDDEN SURFACES. Inclined surfaces appear twice in a multiview projection. Given the multiview projection, draw its corresponding isometric view.




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF INCLINED SURFACES WITH HIDDEN SURFACES. First step, try to imagine the object. Second step, label each plane as whether it is normal (N) or inclined (I). This will aid you in imagining the object.

(I)

(N)

(I)

(N)

(N)(I)

(N)

(N)




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF INCLINED SURFACES WITH HIDDEN SURFACES. After imagining the shape of the object, start your construction with a glass box with the dimensions given by the multiview projection. (NOTE: ALWAYS START WITH A GLASS BOX).




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF INCLINED SURFACES WITH HIDDEN SURFACES. Lightly sketch the irregular features relative to the sides of the box. Take note of the type of surface (inclined or normal). Also remember that nonisometric lines will not be true length in the isometric drawing (DO NOT DIRECTLY TRANSFER THE DISTANCE OF THE NONISOMETRIC LINE FROM THE MULTIVIEW TO THE ISOMETRIC).

nonisometric




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF INCLINED SURFACES WITH HIDDEN SURFACES. Darken final lines.




Isometric Drawing

ISOMETRIC DRAWING OF INCLINED SURFACES: EXAMPLE ^_^ Given the multiview projection, draw its corresponding isometric projection.




Isometric Drawing

ISOMETRIC DRAWING OF INCLINED SURFACES: EXAMPLE ^_^ Start with a glass box. Try to imagine the shape of the object.




Isometric Drawing

ISOMETRIC DRAWING OF INCLINED SURFACES: EXAMPLE ^_^ Try to chop the object for better understanding. Let’s first analyze the back part of the object.

Edge view of the inclined surface

Normal surface

Inclined surface




Isometric Drawing

ISOMETRIC DRAWING OF INCLINED SURFACES: EXAMPLE ^_^ Locate areas to be removed. Lightly sketch the back part of the object analyzed.

Inclined surface

Normal surface





Isometric Drawing

ISOMETRIC DRAWING OF INCLINED SURFACES: EXAMPLE ^_^ The back part of the object should somehow look like this…




Isometric Drawing

ISOMETRIC DRAWING OF INCLINED SURFACES: EXAMPLE ^_^ Next, analyze the middle part of the object.

Normal

Inclined

Normal Normal -blocked by the inclined surface Edge view of the

inclined surface

Normal




Isometric Drawing

ISOMETRIC DRAWING OF INCLINED SURFACES: EXAMPLE ^_^ Locate areas to be removed. Lightly sketch the middle part of the object analyzed (blue lines).

Normal Inclined

Normal


Normal

Inclined




Isometric Drawing

ISOMETRIC DRAWING OF INCLINED SURFACES: EXAMPLE ^_^ After finishing the middle part, the object should somehow look like this…




Isometric Drawing

ISOMETRIC DRAWING OF INCLINED SURFACES: EXAMPLE ^_^ Afterwards, analyze the front part of the object.

Inclined

Normal




Isometric Drawing

ISOMETRIC DRAWING OF INCLINED SURFACES: EXAMPLE ^_^ Locate areas to be removed. Lightly sketch the front part of the object analyzed (blue lines).Inclined

Normal

NormalRemoved block

Removed block




Isometric Drawing

ISOMETRIC DRAWING OF INCLINED SURFACES: EXAMPLE ^_^ After finishing the front part, the object should somehow look like this…




Isometric Drawing

ISOMETRIC DRAWING OF INCLINED SURFACES: EXAMPLE ^_^ Prefinalizing the shape of the object….




Isometric Drawing

ISOMETRIC DRAWING OF INCLINED SURFACES: EXAMPLE ^_^ Clear all main areas to be removed. Darken final lines.




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF OBLIQUE SURFACES Oblique surfaces are the third type of plane surface. They slant at an angle to the front, top, and side projections. Oblique surfaces appear as foreshortened surfaces in all regular views (meaning NOT IN TRUE LENGTH). Given the multiview projection, draw its corresponding isometric drawing.




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF OBLIQUE SURFACES Draw a glass box with dimensions following that of the multiview projection.




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF OBLIQUE SURFACES Surface “A” in the front view is a horizontal edge-of-surface in the top view. Locate “A” on the glass box. Label the corners of the other surface 1 – 8 as shown. From the shape, number of corners etc., surface 1 – 8 is also a surface in the top view. Label the common point 7 and 8 on the glass box.

21

A

8

7

6

5

43

A

Edge view of A

7

8




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF OBLIQUE SURFACES Locate corners 1 to 8 in the top view. Placing point 1 or 8, or 6 or 7 in the top view is a problem. Since these points all project vertically, there are multiple locations possible. THE KEY TO LOCATING SOME CORNERS OF OBLIQUE SURFACES IS TO FIND ONE CORNER THAT IS KNOWN FOR SURE. Here, corners 2 to 5 can be located. Knowing these points will find 1. ie. 1 must connect to 2, 8 must connect to 1, 6 must connect to 5, etc.

21

86

5

43

7

12

34

5 6

78

1

7

8

2




Isometric Drawing

21

86

5

43

7

12

34

5 6

78

STEPS IN MAKING AN ISOMETRIC DRAWING OF OBLIQUE SURFACES Locate corners 1 to 8 in the side view. Sketch the right side surface on the glass box. Locate points 6 and 5 as shown.

1

7

8

2

7

6

5

8

1 2

3 4

5

6




Isometric Drawing

STEPS IN MAKING AN ISOMETRIC DRAWING OF OBLIQUE SURFACES Sketch 1, 2, 3, 4, 5, 6, 7, 8 to 1 on the glass box. The surface should have the same shape, number of corners, and parallel edges.

21

86

5

43

7

12

34

5 6

78

7

6

5

8

1 2

3 4

1

8

2

5

6

7

34




Isometric Drawing

21

86

5

43

7

12

34

5 6

78

7

6

5

8

1 2

3 4

STEPS IN MAKING AN ISOMETRIC DRAWING OF OBLIQUE SURFACES Complete all surfaces. Darken final lines.




Isometric Drawing

Final Note: All solutions given are just guidelines or aid to help you in understanding the concept of isometric drawing or, how to attack a certain involving isometric drawings. In short, there are many other

ways in solving a problem involving isometric drawings. CORRECT ISOMETRIC DRAWING DEPENDS ON A CORRECT IMAGINATION OF

THE OBJECT.

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