Architectural Drawings - Carpenter's and Builder's Math, Plans, and Specifications - page 256

GLASS

V VERTICAL PLANE

H

OBJECT

E

HORIZONTAL
PLANE

A

F
G

B

FRONT

D

C

a

b GLASS

c

d

FRONT ELEVATION

Figure 9-1 Rectangular object resting on a horizontal plane
and facing a vertical plane.

The rays of light from points ABCD of the building pass through
the glass at points a , b , c , and d .Ifthese points ( a , b , c , and d )
are connected by lines, a view of the object as seen from the front is
obtained, which is called front elevation .
The front elevation is identical in shape and size with the front
side ABCD of the object (that is, ab

= AB ; bc = BC , and so on;

angle dab = angle DAB ; angle abc = angle ABC , and so on).

To p View or Plan
For this view, place a pane of glass in a horizontal position above
the building that is resting on the horizontal plane (see Figure 9-2).
Now, look at the object directly from above. Note that the rays of
light from corners AEFB of the top pass through the glass at points
aefb .Ifthese points aefb are connected by lines, a view of the object
as seen from the top is obtained, which is called the top view ,or
preferably plan .
Right-End View (Elevation)
A pane of glass is placed to the right of the building in a vertical po-
sition and parallel to the right side BFGC of the building (see Figure
9-3). Here, the pane of glass is marked P , which means profile plane ,
or plane from a side projection. Looking at the building directly from