Engineering Graphics

1. A point A is 15 mm above HP and 10 mm in front of VP. Draw its projections Point A is situated 15 mm above HP and 10 mm above HP. It means that, it is situated in first quadrant. When the point is situated in first quadrant, its front view is above 10 mm x-y reference line and top view is 10 mm below x-y reference line. The projections of point A is shown in figure   2. A point B is situated in second quadrant. The distance of point from HP and VP is 20 mm and 10 mm respectively. Draw the projection of point B.   3. A point C is situated in third quadrant. It is 10 mm behind VP and 12 mm below HP. Draw its projections.   4. A point D is 15 mm in front of VP and 25 mm below HP. Draw its projections.    

Here, in projections of point, the object is point and it will be placed in different quadrants. The front view, top view and side view of point are denoted by various notations, which are given in the following table by considering point A. Actual Point A Front view a' or A F Top View a or A H Side View a'' or A P   Point Situated in I-Quadrant When the point (say A) is situated in first quadrant as shown in  (a). Its front view a’ is always above reference line x-y and top view a always below x-y. The distance between reference line x-y and front view a' is h which is equal to the distance between actual point A and HP . The distance between reference  line x-y and top view a is w which is equal to that of actual point A and VP . Figure b shows orthographic view of point A.   Point Situated in II-Quadrant When the point (say B ) is situated in second quadrant as shown in Figure a. It’s both front view b’ and top view

Draw the following orthographic views by first angle projection method; a) Front view from direction X b) Top view c) Left hand side view Solution:  

Draw the following orthographic views by first angle projection method; a) Front view from direction X b) Top view c) Right hand side view   Figure a Solution Figure a shows bottom side of the object.  

Draw following orthographic views by first angle projection method: a) Front view from direction X b) Top view c) Left Hand Side View Solution

Draw following orthographic views by first angle projection method. a) Front view from direction x b) Top view c) LHSV   Solution

Draw: a) Front view from direction X b) Top View c) Left Hand Side View   Solution

Draw the following orthographic views from the given pictorial view by first angle projection method a) Front view from direction x b) Top view c) Left hand side view Solution

Draw: a) Front view from the direction x b) Top view c) Right hand side view Solution