Textbook of Engineering Drawing, Second Edition

_____ Orthographic Projections 5.33

4. Line parallel to H.P. and inclined to v.P.
   Problem: Draw the projections of a straight line CD 40 mm long, parallel to H.P. and inclined at
   35° to V.P. The end Cis 20 mm above H.P. and 15 mm in front ofY.P. Find its traces.
   . Solution: (Fig. 5.44)

c' d'

e N

--~-+----------+-~y

Fig. 5.44

1. Draw the front view cldl and top view cd.

'" .....

2. Produce dc to meet XY at v. From v draw a projector to intersect dlcl produced at V.T.


3. CD is parallel to H.P.


4. Therefore it has no H.T.


5. Line parallel to both H.P. and v.P.
   Problem: A line AB 40 mm long is parallel to both the planes. The line is 20 mm above H.P.

and 15 mm in front of v.P. Draw the projections and find its traces.

.. Solution: (Fig. 5.45)

40

at b'

e N

x y

'" .....

a b

No Traces

Fig. 5.45

1. Draw the front view albl and top view abo


2. The line AB is parallel to both the planes when the line is extended, it will not meet both H.P.
   and V.P., since it is parallel to both the planes. Therefore it has no H.T. and Y.T.