Download Measured Perspective presentation

Graphic Communication
 The given views
show the Front
Elevation and End
Elevation of a
house.
Eye Level
Ground Level
 Draw a measured
perspective of the
house from the
given spectator
point
Picture Plane
Spectator Point

Start by finding the two
vanishing points.

Extend the eye level,
ground and picture plane
lines across the drawing.
•
Draw a line from the
spectator point until it
reaches the picture plane
at each side of the
drawing. These lines
should be drawn parallel
to the sides of the house.
•
Draw a vertical line
through these points.
•
Indicate the points where
these lines cross the eye
level line – these are the
vanishing points required.
Vanishing Point 1
EL
Vanishing Point 2
GL
PP
SP
EL
Height Line 2
Using the edges of the
building, project lines
up to the picture
plane, and then
vertically to find a
height line at each
side of the drawing.
Height Line 1

VP2
VP1
GL
PP
SP
HL 2
HL1
EL
VP2
VP1
GL
PP
Add the heights of the
building onto each of the
height lines.
This is best done in stages
so that the drawing is
easier to read.
Start with the building
and later the heights for
the windows and doors
can be added.
SP
EL
HL 2
Taking one wall at a
time, project lines
from the spectator
point through the
corners of the wall to
the picture plane.
HL1
•
VP2
VP1
GL

Where the picture
plane and the
projected lines cross
draw vertical lines.

These lines will guide
you for the position of
the wall and for the
ground line and roof
height on the house.
PP
SP
•
EL
HL 2
To find the outline of
the wall, lines need to
be projected from the
vanishing point
through the correct
height points until
they cross the vertical
lines just drawn.
HL1

VP2
VP1
GL
PP
As these drawings can
become quite
complicated it is wise
to darken the edges
as you find them,
although take care
that all the edges
being darkened are
visible at the end.
SP
 Not all of the lines
for this wall will be
darkened at this
stage as the porch
in front of the
house still has to be
added and this will
hide some of the
lines.
EL
HL 2
HL1
 To draw the front
wall of the house
the same process is
carried out.
VP2
VP1
GL
PP
SP
EL
HL 2
HL1
 To draw the roof of
the house the same
process is carried
out.
VP2
VP1
GL
PP
SP
There are two different
ways to construct the
gable of the porch.
HL 2
HL1

(The projection lines used to
construct the house have been
deleted for clarity.)

Find the vertical lines for
the porch. This is done in
the same way as the lines
for the main house.
•
Find the height of the
roof where it meets the
house wall. This requires
the projection line from
VP1 to change direction
when it meets the front
corner of the house and
project towards VP2 .
•
Find the distance that the
porch projects forward
from the house
EL
VP2
VP1
GL
PP
SP

Project from VP1 through
the height point and draw
across the gable.

When any corner of the
building is reached the
projected line changes to
the other VP.

This means that the
projected line will change
direction at the house
front corner and the
corner where the porch
and house meet.
•
Darken the edges to
complete the gable of the
porch.
EL
HL 2
To draw the front of the
porch it is necessary for
the height of the roof at
the front to be found.
HL1

VP2
VP1
GL
PP
SP
•
•
In this version the height
of the gable points can
now be found by
projecting directly from
VP1 onto the vertical lines
for the corners.
EL
HL 2
HL3
The second method
requires a new height line
to be constructed, using
the gable edge on the
plan to find its position.
HL1
•
VP2
VP1
GL
PP
When the gable has been
constructed, darken in
the required edges.
SP
•
The remainder of
the porch roof can
now be completed.
Firstly draw the
vertical lines for
each of the corners
EL
HL 2
HL1
•
VP2
VP1
GL
PP
 Now project the
lines from the
gable to VP2 to
find the shape of
the roof structure.
SP
EL
HL 2
The porch can now
be completed by
adding the final
lines for the front
surface.
HL1
•
VP2
VP1
GL
•
The porch can be
darkened in and
the remaining
visible ground lines
of the main
building can be
added to complete
the main outline of
the building.
PP
SP
•
Firstly, you will need to mark
the positions of each window
and door on to the plan view
and the required heights onto
the height line if this has not
already been done.
•
Project lines through each of
the plan points up to the PP
and then project vertical lines
through each.
•
Project from VP1 through the
height points onto the gable of
the building.
•
Locate the position and shape
of each door or window and
darken the outlines.
EL
HL 2
The doors and windows are
positioned following the same
procedures. (The existing
construction lines have again
been removed for clarity)
HL1
•
VP2
VP1
GL
PP
SP
The windows and
doors on the front of
the building are found
in the same way.
EL
HL 2
HL1
•
VP2
VP1
GL
PP
SP
To complete the
drawing the window
and door on the porch
are added.
EL
HL 2
HL1
•
VP2
VP1
GL
PP
SP
This final slide shows
what the completed
house should look
like.
EL
HL 2
HL1
•
VP2
VP1
GL
PP
SP
Department Of Technical Education