Textbook of Engineering Drawing, Second Edition

• ____ Orthographic Projections 5.25.

Problem: A line AB 50 mm long is parallel to v.P. and inclined at an angle of30^0 to H.~The end -
A is 15 mm above H.P. and 20 mm in front ofV.P. Draw the projections of the line.

Solution: (Fig.5.32)

~f-I-----+-Y

(a)

Fig. 5.32

o

""

a

1. A is 15 mm above H.P. Hence mark aIlS nun above xy.

(b)

2. A is 20 mm in front ofV.P. Hence mark a 20 mm below xy.
   To obtain the front view albl, look from the front (Fv):

b

3. As AB is parallel to V.P. and inclined at an angle of30^0 to H.P., albl will be equal to its true
   length and inclined at an angle of30^0 to xy.