Sketching
Freehand
sketching
A sketch is
a quickly drawn freehand drawing that is not meant as a finished work. An
architect’s sketches mainly serves as a way to try out different ideas
beginning a final version of the work, especially when the finished work is
expensive and time consuming.
How to
sketch freehand
- Hold your pencil gently and
sketch straight lines using the movement of your arm, not with wrist
movement.
- Freehand lines are not meant to
be straight, as if drawn with a ruler. It is the direction that is
important.
- Mark the end of the line with a
dash, using mid-line dashes for longer lines.
- When drawing, keep your eye on
the end of the dash, not on the pencil point.
- It helps to hold your pencil
above the paper and draw several imaginary lines before drawing on the
sheet.
- Construction lines can be short
overlapping lines, but the final outline should be clear and dark.
- Freehand sketches are not drawn
to scale, but the size and the shape should be in proportion. Bear in mind
the GPO technique.
v Firstly, draw G= guidelines
v Secondly, draw P= proportion
v Lastly, draw O= the outline
Examples of
freehand sketching stages
Freehand
sketching of different shapes
Working
drawings
Working
drawings are the set of technical drawings used during the manufacturing stage of
a product. In architecture, these include architectural drawings, structural
drawings and mechanical drawings. A working drawing is the final ‘constructed’
drawing, drawn as part of the design process. It usually has a front side and
plan view of the solution. Dimensions are added so that any person using the
working drawing can manufacture the design. Usually there are at least 6
dimensions, that you can add as many as you think are needed in order for the
manufacturer to make the solution that you have designed.
The working
drawing should be precise and drawn to a scale. If a drawing is half the size
of the solution then the scale is 1:2. if the drawing is a 3rd the
size of the solution then the scale is 1:3. use a 2H pencil or a fine black pen
for the final outline.
v The arrows and the written
measurements should be dark and the rest of each dimension should be feint.
v Dimensions are normally drawn as
shown in the illustration below.
how to add dimension to a drawing
The
working drawing
A list of
parts should be included. This gives details such as the overall dimensions,
materials and finishes of each part. Usually a working drawing is drawn in
third angle projection. Add the symbol or brand to the drawing. Below is an
example of a box with a lid.
