missing and isometric views ppt
DESCRIPTION
edTRANSCRIPT
MISSING AND ISOMETRIC VIEWS PRESENTATION BY
Mr.KIRAN LALSANGI
Discussion on Orthographic and isometric projection.
Principal of projection. If straight lines are drawn from various points
on the counter of an object to meet a plane, the object is said to be projected on that plane. The figure formed by joining ,in correct sequence ,the points at which these lines meet the plane ,is called the projection of the object .The lines from the object to the plane are called projectors.
METHODS OF PROJECTION In engg. drawing following four methods
of projections are commonly used they are
1)Orthographic projection.
2)Isometric projections.
3)Obique projection.
4)Prespective projection.
In the above methods 2,3,4 represents the objects by a pictorial view as eyes see it .In these methods of projection a three dimensional object is represented on a projection plane by one view only. While in the orthographic projection an object is represented by two or three views on the mutual perpendicular projection planes. Each projection view represents two dimensions of object at least two or three views are required.
Draw the first angle projection and third angle projection symbol?
Why first angle and third angle method is used and why second and fourth angle method is not used?
Assumptions.1)Vertical plane is assumed fix.
2)Horizantal plane is rotated in 90 degree.
3)Horizontal plane is rotated in clockwise direction only.
4)Observer is always at the right side of vertical plane.
Why third angle method is mostly used?
First angle projection
Third angle method.
What is mean by isometric projection?
Isometric projection is a type of pictorial projection in which the three dimensions of a solid are not only shown in one view, but their actual sizes can be measured directly from it.
Isometric graph
Answer
1.
Solution-1
2.
Solution-2
3.
Solution-3
4.
Solution-4
5.
SOLUTION-5
6.
SOLUTION-6
7.
SOLUTION-7
8.
SOLUTION-8
9.
SOLUTION-9
10.
SOLUTION-10.
11.
SOLUTION-11
12.Draw isometric view?.
SOLUTION-12
13.
SOLUTION-13
SOLUTION-13
14.
SOLUTION-14
15
SOLUTION-15
16.
SOLUTION-16
17.
SOLUTION-17
18.
SOLUTION-18
Also for- 18
19.
SOLUTION-19
20.
SOLUTION-20
21.
SOLUTION-21
22.
SOLUTION-22
23.
SOLUTION-23
24.
SOLUTION-24
25.
SOLUTION-25
26.
SOLUTION-26
27.
SOLUTION-27
28.
SOLUTION-28
29.Draw top view & isometric view
29. Solution
30. Draw top view and isometric view.
30.Solution
31.Draw L.H.S.V. and Isometric view
31.Solution.
32.Draw isometric view?
32.Solution
33.Draw isometric view?
33-Solution
34.Draw isometric view?
35.Draw isometric view?
Evaluate yourself . No of correct answers –
60 or more – Excellent Between 40 –60 – Good Between 30 – 40 – Average Less than 30 – Take efforts