Presentation drawings are those we typically think of when the term “design drawing” is used or mentioned. These drawings describe a design proposal in a graphic manner intended to persuade an audience of its value. The audience may be a client, a committee, or merely someone browsing for an idea. Whether produced to assist the client's imagination or to obtain a commission, either privately or through a competition, presentation drawings should communicate as clearly and accurately as possible the three-dimensional qualities of a design. Although the drawings that comprise a presentation may be excellent two-dimensional graphics worthy of an exhibition, they are merely tools for communicating a design idea, never ends in themselves.
Unless presentation drawings are comprehensible and persuasive—their conventions understood and their substance meaningful—a presentation will be weak and ineffective. An effective presentation, however, also possesses important collective characteristics.
Be clear about design intent. A presentation should communicate the central idea or concept of a design scheme. Graphic diagrams and text are effective means of articulating and clarifying the essential aspects of a design scheme, especially when they are visually related to the more common types of design drawing.
Be economical. An effective presentation employs economy of means, utilizing only what is necessary to communicate an idea. Any graphic elements of a presentation that are distracting and ends in themselves can obscure the intent and purpose of the presentation.
Be articulate. At a minimum, presentation drawings should explain a design clearly and in enough detail so that viewers unfamiliar with it will be able to understand the design proposal. Eliminate unintended distractions, such as those caused by ambiguous figure-ground relationships or inappropriate groupings of drawings. Too often, we can be blind to these glitches, because we know what we want to communicate and therefore cannot read our own work in an objective manner.
Avoid presenting distorted or incorrect information. Presentation drawings should accurately simulate a possible reality and the consequences of future actions so that any decisions made based on the information presented are sound and reasonable.
Be organized. In an effective presentation, no one segment is inconsistent with or detracts from the whole. Unity, not to be confused with uniformity, depends on:
Each segment of a presentation should relate to what precedes it and what follows, reinforcing all the other segments of the presentation.
The principles of unity and continuity are mutually self-supporting; one cannot be achieved without the other. The factors that produce one invariably reinforce the other. At the same time, however, we can bring into focus the central idea of a design through the placement and pacing of the major and supporting elements of the presentation.
A single drawing cannot fully explain a design. Only through a coordinated presentation of related drawings can the three-dimensional form and character of a design be communicated. To explain and clarify aspects that are beyond the capability of the drawings, we resort to diagrams, graphic symbols, titles, and text. In any design presentation, therefore, we should carefully plan the sequence and arrangement of all of the following elements:
All of the above elements have properties that must be considered in composing a visually balanced presentation:
We generally read design presentations from left to right and from top to bottom. Slide and computerized presentations involve a sequence in time. In either case, the subject matter presented should progress in sequence from small-scale to large-scale graphic information, and from the general or contextual view to the specific.
The sequence and alignment of the drawings should reinforce their projected relationships.
Design drawings are usually presented as a related set or group of figures. Typical examples include a series of floor plans for a multistory building or a sequence of building elevations. The spacing and alignment of these individual drawings, as well as similarity of shape and treatment, are the key factors in determining whether we read these drawings as a set of related information or as individual figures.
Graphic symbols help the viewer identify the various aspects and features of a drawing or presentation.
Graphic symbols rely on conventions to convey information. To be easily recognizable and readable, keep them simple and clean—free of extraneous detail and stylistic flourishes. In enhancing the clarity and readability of a presentation, these devices also become important elements in the overall composition of a drawing or presentation. The impact of graphic symbols and lettering depends on their size, visual weight, and placement.
The size of a graphic symbol should be in proportion to the scale of the drawing and readable from the anticipated viewing distance.
The size and tonal value of a graphic symbol determines its visual weight. If a large symbol or typeface is required for readability but a low value is mandatory for a balanced composition, then use an outline symbol or letter style.
Place graphic symbols as close as possible to the drawing to which they refer. Whenever possible, use spacing and alignment instead of boxes or frames to form visual sets of information.
A wealth of well-designed and legible typefaces is available in digital typography. You should therefore spend time on the appropriate selection and use of fonts rather than attempt to design new ones.
Lettering in a design presentation should be carefully integrated into the composition of drawings on each sheet or board.
Organize text into visual sets of information and relate these sets directly to the portion of the drawing to which they refer. The line spacing of text should be more than one-half of the letter height used, but no more than the letter height itself. The space between blocks of text should be equal to or greater than the height of two lines of text.
A set of related drawings may be laid out in a vertical, horizontal, or grid format. In planning the layout for a presentation, first identify the essential relationships you want to achieve. Then use a storyboard or small-scale mockup of the presentation to explore alternative drawing arrangements, alignments, and spacing prior to beginning the final presentation drawings.
Drawing and page layout programs give us the ability to try out different ways to arrange the elements of a presentation. However, because what we see on a monitor may not necessarily match the output from a printer or plotter, a trial layout should always be printed or plotted to ensure that the results are satisfactory.
Digital technology has introduced the elements of time and motion into architectural presentations. Presentation software enables us to plan and present slide shows of static graphic images as well as animations. Whereas we can roam and ponder a series of drawings displayed on a wall of a room, our viewing of a computer-based presentation is sequential and controlled by the presenter.