Architectural Graphics - WORD - 185 - 210.rtf

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10

Freehand Drawing

Despite rapid advances in digital imaging technology, drawing with a

free hand holding a pen or pencil remains the most intuitive means we

have for graphically recording observations, thoughts, and experiences.

The tactile, kinesthetic nature of freehand drawing in direct response to

sensory phenomena sharpens our awareness in the present and enables

us to collect visual memories of the past. Freehand drawing also enables

us to initiate and freely work through ideas of a possible future that we

imagine in the mindÕs eye. During the design process itself, the freehand

drawing of diagrams allows us to further explore these ideas and

develop them into workable concepts.

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DRAWING FROM OBSERVATION

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Drawing from observation sharpens your

awareness of environmental settings, enhances

your ability to retain visual memories, and helps

build up your design vocabulary.

¥ Drawing from observation is most meaningful

and rewarding when you draw what interests

you. If assigned a subject to draw, consider

what aspect or quality of the subject attracts

your attention.

¥ Possible subject matter includes the

relationship between interior and exterior or

public and private spaces, spatial sequences,

and urban patterns.

¥ Other worthwhile explorations include studies

of proportion, scale, light, and color, how

materials meet in construction assemblies,

details, and other sensible qualities that

contribute to the character of a place.

¥ Do not neglect to look at architecture in

relation to the landscape.

The process for drawing from observation is to

look, respond, and record.

¥ First pay careful attention to the subject.

¥ Respond by recording not simply the optical

image but also your thoughts and

impressions.

¥ The constant challenge is to select a point of

view, medium, and technique appropriate to

describing the selected aspect,

characteristic, or quality of the subject.

¥ Do not be overly concerned with technique;

each one of us inevitably develops a personal

style of drawing.

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DRAWING FROM OBSERVATION

FREEHAND DRAWING / 187

Drawing from observation requires simple

equipment: a pen or pencil and a pad of paper or

sketchbook suitable for both dry and wet media.

You may want to experiment with the feel and

capabilities of other media, such as charcoal

pencils and markers. Try to determine the limits

of expression of which each is capable and how its

characteristics affect the nature of a drawing.

For example, you should find that a fine-tipped

pen or pencil encourages you to focus on minute

details. Because it takes innumerable fine lines to

cover a given area, many line drawings end up

smaller than intended or, if large in size, weak in

intensity. On the other hand, sketching with a

broad-tipped pencil or marker fosters a broader

view and the omission of details.

Freehand sketches may consist purely of lines

or be a combination of lines and tones. The line,

however, remains the single most essential

drawing element, one that is capable of a

wide range of expression. It can define

shape and form and even imply a sense

of depth and space. A line can portray

hard as well as soft materials; it can be

light or heavy, limp or taut, bold or tentative.

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CONTOUR DRAWING

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Contour drawing is one approach to drawing from observation.

Its primary purpose is to develop visual acuity and sensitivity

to qualities of surface and form. The process of contour

drawing suppresses the symbolic abstraction we normally use

to represent things. Instead, it compels us to pay close

attention, look carefully, and experience a subject with both

our visual and tactile senses.

¥ Contour drawing is best done with either a soft, wellsharpened

pencil or a fine-tipped pen that is capable of

producing a single incisive line. This fosters a feeling of

precision that corresponds to the acuity of vision that

contour drawing requires.

¥ Imagine the pencil or pen is in actual contact with the

subject as you draw.

¥ As the eye carefully traces the contours of a subject, the

hand moves the drawing instrument at the same slow and

deliberate pace, and responds to every indentation and

undulation of form.

¥ Avoid the temptation to move the hand faster than the eye

can see; examine the shape of each contour you see in the

subject without considering or worrying about its identity.

¥ The most noticeable contours are those that circumscribe

an object and define the outer boundary between the figure

and its background.

¥ Some contours travel inward at folds or breaks in a plane.

¥ Others are formed by overlapping or projecting parts.

¥ Still other contours describe the shapes of spaces and

shadows within the form.

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CONTOUR DRAWING

FREEHAND DRAWING / 189

We are conditioned to see the shapes of things rather

than the shapes of the spaces between them. While we

normally perceive spatial voids as having no substance,

they share the same edges as the objects they

separate or envelop. The positive shapes of figures and

the shapeless spaces of backgrounds share the same

boundaries and combine to form an inseparable

wholeÑa unity of opposites.

In drawing, also, negative shapes share the contour

lines that define the edges of positive shapes. The

format and composition of a drawing consists of

positive and negative shapes that fit together like the

interlocking pieces of a jigsaw puzzle. In both seeing and

drawing, we should raise the shapes of negative spaces

to the same level of importance as the positive shapes

of figures and see them as equal partners in the

relationship. Since negative shapes do not always have

the easily recognizable qualities of positive shapes,

they can be seen only if we make the effort.

¥ We should carefully observe the interconnected

nature of positive and negative shapes.

¥ As we draw the edges of positive shapes, we should

also be aware of the negative shapes we are creating.

¥ Focusing on the shapes of these negative spaces

prevents us from thinking consciously about what

the positive shapes represent, and we are free to

draw them purely as two-dimensional figures.

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ANALYTICAL DRAWING

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In drawing analytically, we seek to merge two

approachesÑdescribing the outer configuration of

surfaces of an object and explaining its inner

structural nature and the way its parts are arranged

and joined in space. Unlike contour drawing, in which

we proceed from part to part, analytical drawing

proceeds from the whole to the subordinate parts and

finally the details. Subordinating parts and details to

the structure of the overall form prevents a piecemeal

approach that can result in faulty proportional

relationships and a lack of unity.

¥ Begin an analytical drawing with light, freely drawn

lines. Draw these lines in an exploratory manner to

block out and establish a transparent volumetric

framework for a form or composition.

¥ These exploratory lines are diagrammatic in nature,

serving to establish and explain the underlying

geometry and structure of the subject.

¥ These initial traces are also called regulating lines

because they can be used to locate points, measure

size and distance, find centers, express

perpendicular and tangential relationships, and

establish alignments and offsets.

¥ Regulating lines represent visual judgments to be

confirmed or adjusted. Do not erase any previously

drawn lines. If necessary, restate a lineÑ

correcting basic shapes and checking the relative

proportions between the parts.

¥ Always strive for incremental improvement over the

last line drawn.

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ANALYTICAL DRAWING

FREEHAND DRAWING / 191

¥ Because of their constructive nature, regulating

lines are not limited by the physical boundaries of

objects. They can cut through forms and extend

through space as they link, organize, and give

measure to the various parts of an object or

composition.

¥ Drawing both unseen and visible parts of the

subject makes it easier to gauge angles, control

proportions, and see the optical appearance of

shapes. The resulting transparency also conveys a

convincing sense of volume occupied by the form.

Working in this way prevents the appearance of

flatness that can result from concentrating too

much on surface rather than volume.

¥ Through a continual process of elimination and

intensification, gradually build up the density and

weight of the final object lines, especially at critical

points of intersection, connection, and transition.

¥ Having all lines remain visible in the final drawing

intensifies the depth of the image and reveals the

constructive process by which it was generated

and developed.

¥ The closest analogy to analytical drawing is the

wireframe model produced by 3D CAD and modeling

software.

¥ Before actually drawing a line, practice the eyemind-

hand movement by marking the beginning and

end of the intended line with dots. Avoid scratching

in lines with short, feeble strokes. Instead, draw

lines as smoothly and continuously as possible.

¥ For short strokes or when applying considerable

pressure, swing the hand at the wrist or let the

fingers perform the necessary motions.

¥ For longer strokes, swing the entire forearm and

hand freely from the elbow, with a minimum of wrist

and finger movement. Only as you approach the end

of the stroke should you bring the wrist and fingers

into motion to control where the line ends.

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ANALYTICAL DRAWING

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In the analytical process of drawing, we build on geometry.

If we are able to break down what we see into regular

geometric volumes or a geometric arrangement of parts,

we can more easily draw them. We can reorganize the forms

in an additive manner or transform them in a subtractive

manner. The resulting structure can then serve as a

framework for the development and refinement of the

forms and intervening spaces.

¥ The cube is a convenient three-dimensional unit with

which to begin.

¥ From the cube, we can use geometric principles to derive

other basic geometric volumes, such as the pyramid,

cylinder, and cone. Mastery of drawing these simple

forms is a prerequisite for drawing a variety of derivative

compositions.

¥ We can extend a cube horizontally, vertically, as well as

into the depth of a drawing. A number of cubic volumes

or derivative forms can link, extend, or grow into

centralized, linear, symmetrical, or clustered

compositions.

¥ Working from a cubic form, we can selectively remove

or carve out portions to generate a new form. In this

subtractive process, we use the solid-void relationship

between form and space to guide us as we draw the

proportion and development of the parts.

In drawing complex forms, keep the following points in mind:

¥ Use cross-sectional contours to develop the form of

complicated shapes. These imaginary slices strengthen

the dimensional effect of the drawn and show the volume

of the object.

¥ Pay close attention to overlapping forms and negative

spaces in the composition.

¥ Distinguish overlapping forms with linear accents.

¥ Use scattered lines to indicate the transitional surfaces

of curved forms.

¥ Subordinate details to the overall form.

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BUILDING A DRAWING

FREEHAND DRAWING / 193

Every drawing evolves over time. Knowing where to begin, how to

proceed, and when to stop are crucial to the process of drawing.

Building up a drawing in a systematic way is an important

concept. We should advance by progressive stages and

construct a drawing from the ground up. Each successive

iteration or cycle through the drawing process should first

resolve the relationships between the major parts, then resolve

the relationships within each part, and finally readjust the

relationships between the major parts once again.

Tediously finishing one part of a drawing before going on to the

next can easily result in distorting the relationships between

each part and the rest of the composition. Maintaining a

consistent level of completeness or incompleteness across the

entire surface of a drawing is important to preserving a unified,

balanced, and focused image.

The following procedure prescribes a way of seeing as well as

drawing. It involves building up a drawing in the following stages:

¥ Composing a view and establishing structure

¥ Layering tonal values and textures

¥ Adding significant details

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BUILDING A DRAWING

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Composing a View

We normally select out from what we see what is of interest

to us. Since our perception is discriminating, we should also

be selective in what we draw. How we frame and compose a

view, and what we emphasize with our drawing technique, will

tell others what attracted our attention and what visual

qualities we focused on. In this way, our drawings will naturally

communicate our perceptions with an economy of means.

Composing a perspective view of a scene involves positioning

ourselves at a particular point in space and deciding how to

frame what we see.

¥ To convey the sense that the viewer is within a space

rather than on the outside looking in, we must establish

three pictorial regions: a foreground, a middleground, and

a background. All three should not have equal emphasis;

one should dominate to heighten the pictorial space of

the drawing.

¥ When portraying a specific aspect of an object or scene, a

closer viewpoint may be necessary so that the size of the

drawing can accommodate the rendering of tonal value,

texture, and light.

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BUILDING A DRAWING

FREEHAND DRAWING / 195

Establishing Structure

Without a cohesive structure to hold it together, the

composition of a drawing collapses. Once the composition

for a view is established, we use the analytical process of

drawing to establish its structural framework.

In drawing an environmental settingÑan outdoor space or

an interior roomÑwe view the scene from a fixed position

in space. The structure must therefore be regulated by the

principles of linear perspective. We are concerned here

principally with the pictorial effects of linear

perspectiveÑthe convergence of parallel lines and the

diminishing size of objects with depth. Our mind interprets

what we see and presents an objective reality based on

what we know of an object. In drawing a perspective view, we

attempt to illustrate an optical reality. These two are often

at odds, and the mind usually wins out.

¥ We begin with regulating lines that

examine and verify the position, shape,

and proportions of major elements.

¥ As we establish these first few lines, a

tentative armature emerges that both

holds and guides further observations

and ideas.

¥ We draw further perceptions over this

framework, which in turn is adjusted in

response to our perceptions. Let this

structure remain visible, for it clarifies

pictorial relationships and serves as a

preparatory underdrawing for what

comes later.

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BUILDING A DRAWING

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¥ To help us frame and compose a view as well as gauge the

relative lengths and angles of lines, we can construct a

viewfinder out of dark gray or black cardboard.

¥ Another convenient sighting device is the shaft of the

pencil or pen with which we are drawing.

¥ We hold the pen or pencil out at armÕs length, in a plane

parallel with our eyes and perpendicular to our line of

sight.

¥ To make a linear measurement, we can align the tip of the

pen or pencil with one end of an observed line and use our

thumb to mark the other end. Then we shift the pencil to

another line and use the initial measurement to gauge the

length of the second line.

¥ To gauge the apparent slope of a line, we can align one end

of an inclined line with the shaft of the pen or pencil held

vertically or horizontally. We gauge the angle between the

two visually. Then we transfer this angular measurement

to the drawing, using as guides the edges of the drawing

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