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 Week
Five: Oblique Drawings/Orthographic Projection
 Return
to Classroom
It is a necessity
that you read and follow all instructions throughout the Lecture.
Lectures are designed with interactivity, to aid in the learning
process. Often times the lectures will include tips for properly
completing assignments. Be sure to read all information, view all
Audio and Video files and complete all practicals associated with
each lecture.
Overview
Plan Oblique (A)
Plan Oblique (B)
Recap
 Overview
This week you
will use orthographic projection to solve a puzzle. You are going
to continue on with mastering oblique drawings. You'll do several
exercises that will hone those skills.
The following
activity will lead you through the construction of a plan
oblique drawing of floating planes. You will follow the
directions and in the end produce an amazing drawing that will impress
your friends and family or at least look good on the refrigerator.
Plan
Oblique (A)
Construction
of a plan oblique drawing of floating planes. The
cube will be sliced into 2" thick planes. To do this we will
use the 3' cube from Exercise 4 as a base drawing.
Assignment
5A Tips:
Use the plan oblique with the 1 foot grid on it. You'll need your
scale, 45 degree triangle, T-square and of course your lead holder.
Begin by getting your paper set up. Put a piece of vellum over
the cube drawing. All of the lines will be drawn as light guidelines.
Trace the
top of the cube at 1" scale. Begin to make your floating
planes by measuring down 2" in scale, draw the line for that
2 " side edge and then project the bottom edge of the plane
back.
Click
here to view a sample drawing
Now you've
got the first plane floating in space. There are two more to go.
Begin the second plane by measuring down 1'-0" from the top
of the cube. Project the top edge of the second plane back. Measure
down 2" in scale and draw the 2" side edge and then
project the bottom edge of this second plane back.
Click
here to view a sample drawing
You'll notice
that the second plane isn't quite done yet. It needs two more
lines to complete the plane. Before you click on the next illustration
try to visual what this plane is missing. Draw in the missing
lines and then see if you were right.
Click
here to view a sample drawing
There is one
plane left to go. I'm going to leave that in your capable hands.
Follow the steps for the second plane and you will do fine.
You should
now have a plan oblique drawing of the 3 floating planes. Now
that we have the floating planes drawing complete lets finish
this drawing up. The finished plan oblique drawing of the floating
planes should have a 1 foot grid on it and the correct line weights.
Try to complete the drawing on your own. If you need help return
to last weeks cube drawing and review the instructions for the
Grid and Line Weights.
(Insert
Line Weight Link)
Here is the
finished drawing. Be sure to put the title and border on the drawing.
Label the drawing Assignment 5A
(Insert
Assignment 5a)
Have
Questions?
If
you have questions regarding any of the material covered in this
section, visit the "Week Five: Plan Oblique A" Discussion
Forum. The forum can be accessed by clicking on the "Activate
Course WebCT Account" link located on the course "Classroom"
page. Once inside WebCT's discussion board, post questions and/or
comments under the appropriate forum.
Plan
Oblique (B)
The next oblique
drawing will be part of today's assignment. We are going to draw
a plan oblique drawing of the shed we drew for Assignment 3B. Review
Assignment 3B. Have the Assignment sheet ready so that you
can reference it for dimensions of the shed. You can also use the
plan/top view from that assignment as your base drawing for the
plan oblique drawing. This lecture will lead you through the construction
of the plan oblique drawing. The
second part of the assignment will require you to draw the elevation
oblique drawing of the shed on your own.
Asignment
5B Tips:
Use the plan/top view from Assignment 3B.
You'll need your scale, 45 degree triangle, T-square and of course
your lead holder. Begin by getting your paper set up. Remember
the plan we are using for the base drawing must be rotated at
45 degrees. Put a piece of vellum over the plan. All of the lines
will be drawn as light guidelines. We will be working at 1/8"
scale.
(Insert
shed1)
Now you've
got the plan rotated and ready to go. Since we've already done
the plan oblique drawing of the cube, drawing the walls of the
shed should be a piece of cake. Project a line up from each corner
of the shed.
(Insert
shed2)
The next step
is to find the top of the walls. This is just like the top of
the cube. Measure along one of the vertical lines 16'-0".
I found this information on the elevation from Assignment 3A.
Use your 45 degree angle to draw the top edge of the wall. Project
this line around the entire shed.
(Insert
shed3)
The next step
is to get the roof on our shed. The shed has a gable roof so we
need to find the peak of the roof. The peak is located in the
middle of the front wall so we need to first measure over 12'-0"
along the base of the shed. Looking again at the elevation from
Assignment 3A we can find that the top of the roof is 27'-0"
above the ground. We now need to project a line up 27' from the
center of the base of the front wall. Then project a line up from
the center of the back wall.
(Insert
shed4)
We still need
the roof ridge. This is the top edge of the roof. Use your 45
degree triangle to draw in the roof ridge between the roof peak
at the front and back walls.
(Insert
shed5)
Let's get
this shed finished. We now have a roof ridge but not an actual
roof. To draw the roof you will simply connect the dots using
your triangle.
(Insert
shed6)
The only thing
left to do is to trace the finished drawing. Place a sheet of
vellum on top of the shed drawing that you drew using construction
lines. You want to trace the lines you would see from the outside.
Use light guide lines.
(Insert
shed 7)
Now that we
have the plan oblique drawing of the shed complete lets finish
this drawing up. The finished plan oblique drawing should have
the correct line weights. If you need help, return to the instructions
for Line Weights.
Here is the
finished drawing without the correct line weights, I want to see
you figure those out yourself. Be sure to put the title and border
on the drawing. Label this drawing Assignment
5B.
(Insert
assignment5b)
Use a bit
of vision to figure out what this shed looks like. All of the
information you need is here. To finish your drawing use the correct
line weight and put your title block on the drawing. If you need
help, return to the instructions for Line Weights.
The final part of the assignment is to draw the plan oblique of
the fancy shed. Review the steps we used to draw the plan oblique
of the shed earlier in this lecture. The finished plan oblique
drawings should have the correct line weights. If you need help,
return to the instructions for Line Weights.
Have
Questions?
If
you have questions regarding any of the material covered in this
section, visit the "Week Five: Plan Oblique B" Discussion
Forum. The forum can be accessed by clicking on the "Activate
Course WebCT Account" link located on the course "Classroom"
page. Once inside WebCT's discussion board, post questions and/or
comments under the appropriate forum.
Now, try your hand at Assignments 5C, 5D,
and 5E. See Assignment information for details, Assignments
for Chapter 6 can be accessed via the course "Classroom."
Recap
This week was
a lot of work but hopefully we are now experts at Orthographic Projection
and Oblique Drawings. These are two drawing techniques that you
will use a lot in Architectural and Interior Design classes. I also
hope that everyone is noticing a vast improvement in their ability
to see things 3 dimensionally. By now we should be able to look
at a plan and begin to visualize what we are looking at. Usually,
we need some additional information from the elevations or sections
to complete the picture but we can still begin the process by just
looking at the plan.
Next week we
are going to move on to a classic drawing technique - Perspectives.
Next week we will learn one point perspective drawing and draw an
art gallery in perspective.
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