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An architectural drawing or architect's drawing is a
technical drawing Technical drawing, drafting or drawing, is the act and Academic discipline, discipline of composing Plan (drawing), drawings that Visual communication, visually communicate how something functions or is constructed. Technical drawing is essent ...
of a building (or building project) that falls within the definition of
architecture Architecture is the art and technique of designing and building, as distinguished from the skills associated with construction. It is both the process and the product of sketching, conceiving, planning, designing, and constructing buildings ...
. Architectural drawings are used by
architect An architect is a person who plans, designs and oversees the construction of buildings. To practice architecture means to provide services in connection with the design of buildings and the space within the site surrounding the buildings that h ...
s and others for a number of purposes: to develop a design idea into a coherent proposal, to communicate ideas and concepts, to convince clients of the merits of a design, to assist a building contractor to construct it based on design intent, as a record of the design and planned development, or to make a record of a building that already exists. Architectural drawings are made according to a set of conventions, which include particular views (
floor plan In architecture and building engineering, a floor plan is a technical drawing to scale, showing a view from above, of the relationships between rooms, spaces, traffic patterns, and other physical features at one level of a structure. Dimensio ...
,
section Section, Sectioning or Sectioned may refer to: Arts, entertainment and media * Section (music), a complete, but not independent, musical idea * Section (typography), a subdivision, especially of a chapter, in books and documents ** Section sign ...
etc.), sheet sizes, units of measurement and scales, annotation and cross referencing. Historically, drawings were made in ink on paper or similar material, and any copies required had to be laboriously made by hand. The twentieth century saw a shift to drawing on tracing paper so that mechanical copies could be run off efficiently. The development of the computer had a major impact on the methods used to design and create technical drawings,Gary R. Bertoline et al. (2002) ''Technical Graphics Communication''. p.12. making manual drawing almost obsolete, and opening up new possibilities of form using organic shapes and complex geometry. Today the vast majority of drawings are created using CAD software.


Size and scale

The size of drawings reflects the materials available and the size that is convenient to transport – rolled up or folded, laid out on a table, or pinned up on a wall. The drafting process may impose limitations on the size that is realistically workable. Sizes are determined by a consistent
paper size Paper size standards govern the size of sheets of paper used as writing paper, stationery, cards, and for some printed documents. The ISO 216 standard, which includes the commonly used A4 size, is the international standard for paper size. I ...
system, according to local usage. Normally the largest paper size used in modern architectural practice is ISO A0 () or in the USA Arch E () or Large E size ().David Byrnes, AutoCAD 2008 For Dummies. Publisher: John Wiley & Sons; illustrated edition (4 May 2007). Architectural drawings are drawn to scale so that relative sizes are correctly represented. The scale is chosen both to ensure the whole building will fit on the chosen sheet size and to show the required amount of detail. On the scale of one-eighth of an inch to one foot (1:96) or the metric equivalent of 1 to 100, walls are typically shown as simple outlines corresponding to the overall thickness. At a larger scale, half an inch to one foot (1:24) or the nearest common metric equivalent 1 to 20, the layers of different materials that make up the wall construction are shown. Construction details are drawn to a larger scale, in some cases full size (1 to 1 scale). Scale drawings enable dimensions to be "read" off the drawing, i.e. measured directly.
Imperial Imperial is that which relates to an empire, emperor, or imperialism. Imperial or The Imperial may also refer to: Places United States * Imperial, California * Imperial, Missouri * Imperial, Nebraska * Imperial, Pennsylvania * Imperial, Texas ...
scales (feet and inches) are equally readable using an ordinary ruler. On a one-eighth inch to one-foot scale drawing, the one-eighth divisions on the ruler can be read off as feet. Architects normally use a
scale ruler Scale or scales may refer to: Mathematics * Scale (descriptive set theory), an object defined on a set of points * Scale (ratio), the ratio of a linear dimension of a model to the corresponding dimension of the original * Scale factor, a number ...
with different scales marked on each edge. A third method, used by builders in estimating, is to measure directly off the drawing and multiply by the scale factor. Dimensions can be measured off drawings made on a stable medium such as vellum. All processes of reproduction introduce small errors, especially now that different copying methods mean that the same drawing may be re-copied, or copies made in several different ways. Consequently, dimensions need to be written ("figured") on the drawing. The disclaimer "Do not scale off dimensions" is commonly inscribed on architects' drawings, to guard against errors arising in the copying process.


Standard views used in architectural drawing

''This section deals with the conventional views used to represent a building or structure. See the Types of architectural drawing section below for drawings classified according to their purpose.''


Floor plan

A
floor plan In architecture and building engineering, a floor plan is a technical drawing to scale, showing a view from above, of the relationships between rooms, spaces, traffic patterns, and other physical features at one level of a structure. Dimensio ...
is the most fundamental architectural
diagram A diagram is a symbolic representation of information using visualization techniques. Diagrams have been used since prehistoric times on walls of caves, but became more prevalent during the Enlightenment. Sometimes, the technique uses a three ...
, a view from above showing the arrangement of spaces in a building in the same way as a map, but showing the arrangement at a particular level of a building. Technically it is a horizontal section cut through a building (conventionally at four feet / one metre and twenty centimetres above floor level), showing walls, windows and door openings, and other features at that level. The plan view includes anything that could be seen below that level: the floor, stairs (but only up to the plan level), fittings, and sometimes furniture. Objects above the plan level (e.g. beams overhead) can be indicated as dashed lines. Geometrically, plan view is defined as a vertical
orthographic projection Orthographic projection (also orthogonal projection and analemma) is a means of representing three-dimensional objects in two dimensions. Orthographic projection is a form of parallel projection in which all the projection lines are orthogonal ...
of an object onto a horizontal plane, with the horizontal plane cutting through the building.


Site plan

A site plan is a specific type of plan, showing the whole context of a building or group of buildings. A site plan shows property boundaries and means of access to the site, and nearby structures if they are relevant to the design. For a development on an urban site, the site plan may need to show adjoining streets to demonstrate how the design fits into the urban fabric. Within the site boundary, the site plan gives an overview of the entire scope of work. It shows the buildings (if any) already existing and those that are proposed, usually as a building footprint; roads, parking lots, footpaths, hard landscaping, trees, and planting. For a construction project, the site plan also needs to show all the services connections: drainage and sewer lines, water supply, electrical and communications cables, exterior lighting etc. Site plans are commonly used to
represent Represent may refer to: * ''Represent'' (Compton's Most Wanted album) or the title song, 2000 * ''Represent'' (Fat Joe album), 1993 * ''Represent'', an album by DJ Magic Mike, 1994 * "Represent" (song), by Nas, 1994 * "Represent", a song by the ...
a building proposal prior to detailed design: drawing up a site plan is a tool for deciding both the site layout and the size and orientation of proposed new buildings. A site plan is used to verify that a proposal complies with local development codes, including restrictions on historical sites. In this context the site plan forms part of a legal agreement, and there may be a requirement for it to be drawn up by a licensed professional: architect, engineer, landscape architect or land surveyor.


Elevation

An elevation is a view of a building seen from one side, a flat representation of one
façade A façade () (also written facade) is generally the front part or exterior of a building. It is a loan word from the French (), which means 'frontage' or ' face'. In architecture, the façade of a building is often the most important aspect ...
. This is the most common view used to describe the external appearance of a building. Each elevation is labelled in relation to the compass direction it faces, e.g. looking toward the north you would be seeing the southern elevation of the building. Buildings are rarely a simple rectangular shape in plan, so a typical elevation may show all the parts of the building that are seen from a particular direction. Geometrically, an elevation is a horizontal orthographic projection of a building onto a vertical plane, the vertical plane normally being parallel to one side of the building. Architects also use the word elevation as a
synonym A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are al ...
for façade, so the "north elevation" is the north-facing wall of the building.


Cross section

A cross section, also simply called a section, represents a vertical plane cut through the object, in the same way as a
floor plan In architecture and building engineering, a floor plan is a technical drawing to scale, showing a view from above, of the relationships between rooms, spaces, traffic patterns, and other physical features at one level of a structure. Dimensio ...
is a horizontal section viewed from the top. In the section view, everything cut by the section plane is shown as a bold line, often with a solid fill to show objects that are cut through, and anything seen beyond generally shown in a thinner line. Sections are used to describe the relationship between different levels of a building. In the Observatorium drawing illustrated here, the section shows the dome which can be seen from the outside, a second dome that can only be seen inside the building, and the way the space between the two accommodates a large astronomical telescope: relationships that would be difficult to understand from plans alone. A sectional elevation is a combination of a cross section, with elevations of other parts of the building seen beyond the section plane. Geometrically, a cross section is a horizontal orthographic projection of a building on to a vertical plane, with the vertical plane cutting through the building.


Isometric and axonometric projections

Isometric and axonometric projections are a simple way of representing a three dimensional object, keeping the elements to scale and showing the relationship between several sides of the same object, so that the complexities of a shape can be clearly understood. There is some confusion over the distinction between the terms isometric and axonometric. "Axonometric is a word that has been used by architects for hundreds of years. Engineers use the word axonometric as a generic term to include isometric, diametric and trimetric drawings."Alan Piper, ''Drawing for Designers''. Laurence King Publishing 2007. Page 57, definition of axonometric drawing This article uses the terms in the architecture-specific sense. Despite fairly complex geometrical explanations, for the purposes of practical drafting the difference between isometric and axonometric is simple (see diagram above). In both, the plan is drawn on a skewed or rotated grid, and the verticals are projected vertically on the page. All lines are drawn to scale so that relationships between elements are accurate. In many cases a different scale is required for different
axes Axes, plural of '' axe'' and of '' axis'', may refer to * ''Axes'' (album), a 2005 rock album by the British band Electrelane * a possibly still empty plot (graphics) A plot is a graphical technique for representing a data set, usually as a g ...
, and again this can be calculated but in practice was often simply estimated by eye. * An isometric uses a plan grid at 30 degrees from the horizontal in both directions, which distorts the plan shape. Isometric graph paper can be used to construct this kind of drawing. This view is useful to explain construction details (e.g. three dimensional joints in joinery). The isometric was the standard view until the mid twentieth century, remaining popular until the 1970s, especially for textbook diagrams and illustrations.W. B. McKay: McKay's Building Construction. Donhead Publishing 2005. A new reprint of the combined three volumes that McKay published between 1938 and 1944. Heavily illustrated textbook of architectural detailing. *
Cabinet projection Oblique projection is a simple type of technical drawing of graphical projection used for producing two-dimensional (2D) images of three-dimensional (3D) objects. The objects are not in perspective and so do not correspond to any view of an ...
is similar, but only one axis is skewed, the others being horizontal and vertical. Originally used in cabinet making, the advantage is that a principal side (e.g. a cabinet front) is displayed without distortion, so only the less important sides are skewed. The lines leading away from the eye are drawn at a reduced scale to lessen the degree of distortion. The cabinet projection is seen in Victorian engraved advertisements and architectural textbooks, but has virtually disappeared from general use. * An axonometric uses a 45-degree plan grid, which keeps the original orthogonal geometry of the plan. The great advantage of this view for architecture is that the draftsman can work directly from a plan, without having to reconstruct it on a skewed grid. In theory the plan should be set at 45 degrees, but this introduces confusing coincidences where opposite corners align. Unwanted effects can be avoided by rotating the plan while still projecting vertically. This is sometimes called a planometric or plan oblique view, and allows freedom to choose any suitable angle to present the most useful view of an object. Traditional drafting techniques used 30–60 and 45 degree set squares, and that determined the angles used in these views. Once the adjustable square became common those limitations were lifted. The axonometric gained in popularity in the twentieth century, not just as a convenient diagram but as a formal presentation technique, adopted in particular by the
Modern Movement Modernism is both a philosophical and arts movement that arose from broad transformations in Western society during the late 19th and early 20th centuries. The movement reflected a desire for the creation of new forms of art, philosophy, a ...
. Axonometric drawings feature prominently in the influential 1970's drawings of
Michael Graves Michael Graves (July 9, 1934 – March 12, 2015) was an American architect, designer, and educator, as well as principal of Michael Graves and Associates and Michael Graves Design Group. He was a member of The New York Five and the Memphis Gr ...
, James Stirling and others, using not only straightforward views but worms-eye view, unusually and exaggerated rotations of the plan, and exploded elements. The axonometric view is not readily generated by CAD programmes which create views from a three dimensional model. Consequently, it is now rarely used.


Detail drawings

Detail drawings show a small part of the construction at a larger scale, to show how the component parts fit together. They are also used to show small surface details, for example decorative elements. Section drawings at large scale are a standard way of showing building construction details, typically showing complex junctions (such as floor to wall junction, window openings, eaves and roof apex) that cannot be clearly shown on a drawing that includes the full height of the building. A full set of construction details needs to show plan details as well as vertical section details. One detail is seldom produced in isolation: a set of details shows the information needed to understand the construction in three dimensions. Typical scales for details are 1/10, 1/5 and full size. In traditional construction, many details were so fully standardized, that few detail drawings were required to construct a building. For example, the construction of a
sash window A sash window or hung sash window is made of one or more movable panels, or "sashes". The individual sashes are traditionally paned windows, but can now contain an individual sheet (or sheets, in the case of double glazing) of glass. History ...
would be left to the carpenter, who would fully understand what was required, but unique decorative details of the façade would be drawn up in detail. In contrast, modern buildings need to be fully detailed because of the proliferation of different products, methods and possible solutions.


Architectural perspective

Perspective in drawing is an approximate representation on a flat surface of an image as it is perceived by the eye. The key concepts here are: * Perspective is the view from a particular fixed viewpoint. * Horizontal and vertical edges in the object are represented by horizontals and verticals in the drawing. * Lines leading away into the distance appear to converge at a
vanishing point A vanishing point is a point on the image plane of a perspective drawing where the two-dimensional perspective projections of mutually parallel lines in three-dimensional space appear to converge. When the set of parallel lines is perpen ...
. * All horizontals converge to a point on the
horizon The horizon is the apparent line that separates the surface of a celestial body from its sky when viewed from the perspective of an observer on or near the surface of the relevant body. This line divides all viewing directions based on whether ...
, which is a horizontal line at eye level. * Verticals converge to a point either above or below the horizon. The basic categorization of artificial perspective is by the number of vanishing points: * One-point perspective where objects facing the viewer are orthogonal, and receding lines converge to a single vanishing point. *
Two-point perspective Linear or point-projection perspective (from la, perspicere 'to see through') is one of two types of graphical projection perspective in the graphic arts; the other is parallel projection. Linear perspective is an approximate representation ...
reduces distortion by viewing objects at an angle, with all the horizontal lines receding to one of two vanishing points, both located on the horizon. * Three-point perspective introduces additional realism by making the verticals recede to a third vanishing point, which is above or below depending upon whether the view is seen from above or below. The normal convention in architectural perspective is to use two-point perspective, with all the verticals drawn as verticals on the page. Three-point perspective gives a casual, photographic snapshot effect. In professional
architectural photography Architectural photography is the sub genre of the photography discipline where the primary emphasis is made to capturing photographs of buildings and similar architectural structures that are both aesthetically pleasing and accurate in terms of re ...
, conversely, a
view camera A view camera is a large-format camera in which the lens forms an inverted image on a ground-glass screen directly at the film plane. The image is viewed and then the glass screen is replaced with the film, and thus the film is exposed to exa ...
or a
perspective control lens Perspective may refer to: Vision and mathematics * Perspectivity, the formation of an image in a picture plane of a scene viewed from a fixed point, and its modeling in geometry ** Perspective (graphical), representing the effects of visual persp ...
is used to eliminate the third vanishing point, so that all the verticals are vertical on the photograph, as with the perspective convention. This can also be done by digital manipulation of a photograph taken with a standard lens. Aerial perspective is a technique in painting, for indicating distance by approximating the effect of the atmosphere on distant objects. In daylight, as an ordinary object gets further from the eye, its contrast with the background is reduced, its color saturation is reduced, and its color becomes more blue. Not to be confused with aerial view or bird's eye view, which is the view as seen (or imagined) from a high vantage point. In J M Gandy's perspective of the Bank of England (see illustration at the beginning of this article), Gandy portrayed the building as a picturesque ruin in order to show the internal plan arrangement, a precursor of the cutaway view.The Great Perspectivists, by Gavin Stamp. RIBA Drawings Series, published by Trefoil Books London 1982. A montage image is produced by superimposing a perspective image of a building on to a photographic background. Care is needed to record the position from which the photograph was taken, and to generate the perspective using the same viewpoint. This technique is popular in computer visualization, where the building can be photorealistically rendered, and the final image is intended to be almost indistinguishable from a photograph.


Sketches and diagrams

A sketch is a rapidly executed freehand drawing, a quick way to record and develop an idea, not intended as a finished work. A
diagram A diagram is a symbolic representation of information using visualization techniques. Diagrams have been used since prehistoric times on walls of caves, but became more prevalent during the Enlightenment. Sometimes, the technique uses a three ...
could also be drawn freehand but deals with symbols, to develop the logic of a design. Both can be worked up into a more presentable form and used to communicate the principles of a design. In architecture, the finished work is expensive and time consuming, so it is important to resolve the design as fully as possible before construction work begins. Complex modern buildings involve a large team of different specialist disciplines, and communication at the early design stages is essential to keep the design moving towards a coordinated outcome.Richard Boland and Fred Collopy (2004). ''Managing as designing''. p.69. Architects (and other designers) start investigating a new design with sketches and diagrams, to develop a rough design that provides an adequate response to the particular design problems. There are two basic elements to a building design, the aesthetic and the practical. The aesthetic element includes the layout and visual appearance, the anticipated feel of the materials, and cultural references that will influence the way people perceive the building. Practical concerns include space allocated for different activities, how people enter and move around the building, daylight and artificial lighting, acoustics, traffic noise, legal matters and building codes, and many other issues. While both aspects are partly a matter of customary practice, every site is different. Many architects actively seek innovation, thereby increasing the number of problems to be resolved. Architectural
legend A legend is a genre of folklore that consists of a narrative featuring human actions, believed or perceived, both by teller and listeners, to have taken place in human history. Narratives in this genre may demonstrate human values, and possess ...
often refers to designs made on the back of an envelope or on a napkin. Initial thoughts are important, even if they have to be discarded along the way, because they provide the central idea around which the design can develop.Rendow Yee (2002). ''Architectural Drawing: A Visual Compendium of Types and Methods''. 2nd Edition. Wiley, 2002. Although a sketch is inaccurate, it is disposable and allows for freedom of thought, for trying different ideas quickly. Choice becomes sharply reduced once the design is committed to a scale drawing, and the sketch stage is almost always essential. Diagrams are mainly used to resolve practical matters. In the early phases of the design architects use diagrams to develop, explore, and communicate ideas and solutions. They are essential tools for thinking, problem solving, and communication in the design disciplines. Diagrams can be used to resolve spatial relationships, but they can also represent forces and flows, e.g. the forces of sun and wind, or the flows of people and materials through a building.Ellen Yi-Luen Do†& Mark D. Gross (2001)
"Thinking with diagrams in architectural design"
In: ''Artificial Intelligence Review'' 15: 135–149, 2001.
An
exploded view An exploded-view drawing is a diagram, picture, schematic or technical drawing of an object, that shows the relationship or order of assembly of various parts. It shows the components of an object slightly separated by distance, or suspended in ...
diagram shows component parts dis-assembled in some way, so that each can be seen on its own. These views are common in technical manuals, but are also used in architecture, either in conceptual diagrams or to illustrate technical details. In a cutaway view parts of the exterior are omitted to show the interior, or details of internal construction. Although common in technical illustration, including many building products and systems, the cutaway is in fact little-used in architectural drawing.


Types

Architectural drawings are produced for a specific purpose, and can be classified accordingly. Several elements are often included on the same sheet, for example a sheet showing a plan together with the principal façade.


Presentation drawings

Drawings intended to explain a scheme and to promote its merits. Working drawings may include tones or hatches to emphasize different materials, but they are diagrams, not intended to appear realistic. Basic presentation drawings typically include people, vehicles and trees, taken from a library of such images, and are otherwise very similar in style to working drawings. Rendering is the art of adding surface textures and shadows to show the visual qualities of a building more realistically. An architectural illustrator or
graphic designer A graphic designer is a professional within the graphic design and graphic arts industry who assembles together images, typography, or motion graphics to create a piece of design. A graphic designer creates the graphics primarily for publishe ...
may be employed to prepare specialist presentation images, usually perspectives or highly finished site plans, floor plans and elevations etc.


Survey drawings

Measured drawings of existing land, structures and buildings. Architects need an accurate set of survey drawings as a basis for their working drawings, to establish exact dimensions for the construction work. Surveys are usually measured and drawn up by specialist
land surveyors Land, also known as dry land, ground, or earth, is the solid terrestrial surface of the planet Earth that is not submerged by the ocean or other bodies of water. It makes up 29% of Earth's surface and includes the continents and various i ...
.


Record drawings

Historically, architects have made record drawings in order to understand and emulate the great architecture known to them. In the Renaissance, architects from all over Europe studied and recorded the remains of the Roman and Greek civilizations, and used these influences to develop the architecture of the period. Records are made both individually, for local purposes, and on a large scale for publication. Historic surveys worth referring to include: *
Colen Campbell Colen Campbell (15 June 1676 – 13 September 1729) was a pioneering Scottish architect and architectural writer, credited as a founder of the Georgian style. For most of his career, he resided in Italy and England. As well as his architectura ...
's ''Vitruvius Brittanicus'', illustrations of English buildings by
Inigo Jones Inigo Jones (; 15 July 1573 – 21 June 1652) was the first significant Architecture of England, architect in England and Wales in the Early modern Europe, early modern period, and the first to employ Vitruvius, Vitruvian rules of proportion an ...
and
Sir Christopher Wren Sir Christopher Wren PRS FRS (; – ) was one of the most highly acclaimed English architects in history, as well as an anatomist, astronomer, geometer, and mathematician-physicist. He was accorded responsibility for rebuilding 52 church ...
, as well as Campbell himself and other prominent architects of the era. * The
Survey of London The Survey of London is a research project to produce a comprehensive architectural survey of central London and its suburbs, or the area formerly administered by the London County Council. It was founded in 1894 by Charles Robert Ashbee, an A ...
, founded in 1894 by
Charles Robert Ashbee Charles Robert Ashbee (17 May 1863 – 23 May 1942) was an English architect and designer who was a prime mover of the Arts and Crafts movement, which took its craft ethic from the works of John Ruskin and its co-operative structure from the soc ...
and now available through
English Heritage English Heritage (officially the English Heritage Trust) is a charity that manages over 400 historic monuments, buildings and places. These include prehistoric sites, medieval castles, Roman forts and country houses. The charity states that i ...
. A record of notable streets and individual buildings in the former County of London. *
Historic American Buildings Survey Heritage Documentation Programs (HDP) is a division of the U.S. National Park Service (NPS) responsible for administering the Historic American Buildings Survey (HABS), Historic American Engineering Record (HAER), and Historic American Landscapes ...
, records of notable buildings drawn up during the 1930s Depression, this collection is held by the Library of Congress and is available copyright-free on the internet. Record drawings are also used in construction projects, where "as-built" conditions of the completed building are documented to take account of all the variations made during the course of construction.


Working drawings

A comprehensive set of drawings used in a building construction project: these will include not only architect's drawings, but structural and other engineering drawings as well. Working drawings logically subdivide into location, assembly and component drawings.Arthur Thompson, Architectural Design Procedures, Second Edition. Architectural Press: Elsevier 2007. * Location drawings, also called general arrangement drawings, include floor plans, sections and elevations: they show where the construction elements are located. * Assembly drawings show how the different parts are put together. For example, a wall detail will show the layers that make up the construction, how they are fixed to structural elements, how to finish the edges of openings, and how prefabricated components are to be fitted. * Component drawings enable self-contained elements e.g. windows and doorsets, to be fabricated in a workshop, and delivered to site complete and ready for installation. Larger components may include roof trusses, cladding panels, cupboards and kitchens. Complete rooms, especially hotel bedrooms and bathrooms, may be made as prefabricated pods complete with internal decorations and fittings. Formerly, working drawings would typically combine plans, sections, elevations and some details to provide a complete explanation of a building on one sheet. That was possible because little detail was included, the building techniques involved being common knowledge amongst building professionals. Modern working drawings are much more detailed and it is standard practice to isolate select areas of the project on separate sheets. Notes included on drawings are brief, referring to standardized specification documents for more information. Understanding the layout and construction of a modern building involves studying an often-sizeable set of drawings and documents.


Drafting

Until the latter part of the 20th century, all architectural drawings were manually produced, if not by the architects, then by trained (but less skilled)
draftsmen A drafter (also draughtsman / draughtswoman in British and Commonwealth English, draftsman / draftswoman or drafting technician in American and Canadian English) is an engineering technician who makes detailed technical drawings or plans ...
(or
drafter A drafter (also draughtsman / draughtswoman in British and Commonwealth English, draftsman / draftswoman or drafting technician in American and Canadian English) is an engineering technician who makes detailed technical drawings or plans f ...
s), who did not generate the design, but did make many of the less important decisions. This system has continued with CAD drafting: many design architects have little or no knowledge of CAD software programmes, relying upon others to take their designs beyond the sketch stage. Draftsmen often specialize in a type of structure, such as residential or commercial, or in a type of construction: timber frame, reinforced concrete, prefabrication, etc.
Bureau of Labor Statistics The Bureau of Labor Statistics (BLS) is a unit of the United States Department of Labor. It is the principal fact-finding agency for the U.S. government in the broad field of labor economics and statistics and serves as a principal agency of t ...

''Occupational Outlook Handbook, 2008–09 Edition: Drafters''
dated: 18 December 2007. accessed: 24 September 2008.
The traditional tools of the architect were the
drawing board A drawing board (also drawing table, drafting table or architect's table) is, in its antique form, a kind of multipurpose desk which can be used for any kind of drawing, writing or impromptu sketching on a large sheet of paper or for reading a l ...
or drafting table,
T-square A T-square is a technical drawing instrument used by draftsmen primarily as a guide for drawing horizontal lines on a drafting table. The instrument is named after its resemblance to the letter T, with a long shaft called the "blade" and a sh ...
and set squares,
protractor A protractor is a measuring instrument, typically made of transparent plastic or glass, for measuring angles. Some protractors are simple half-discs or full circles. More advanced protractors, such as the bevel protractor, have one or two sw ...
, compasses,
pencil A pencil () is a writing or drawing implement with a solid pigment core in a protective casing that reduces the risk of core breakage, and keeps it from marking the user's hand. Pencils create marks by physical abrasion (mechanical), abra ...
, and drawing pens of different types. Drawings were made on
vellum Vellum is prepared animal skin or membrane, typically used as writing material. Parchment is another term for this material, from which vellum is sometimes distinguished, when it is made from calfskin, as opposed to that made from other ani ...
, coated
linen Linen () is a textile made from the fibers of the flax plant. Linen is very strong, absorbent, and dries faster than cotton. Because of these properties, linen is comfortable to wear in hot weather and is valued for use in garments. It also ...
, and
tracing paper Tracing paper is paper made to have low opacity, allowing light to pass through. It was originally developed for architects and design engineers to create drawings that could be copied precisely using the diazo copy process; it then found many ...
.
Lettering Lettering is an umbrella term that covers the art of drawing letters, instead of simply writing them. Lettering is considered an art form, where each letter in a phrase or quote acts as an illustration. Each letter is created with attention to d ...
would either be done by hand, mechanically using a
stencil Stencilling produces an image or pattern on a surface, by applying pigment to a surface through an intermediate object, with designed holes in the intermediate object, to create a pattern or image on a surface, by allowing the pigment to reach ...
, or a combination of the two. Ink lines were drawn with a ruling pen, a relatively sophisticated device similar to a dip-in pen, but with adjustable line width, capable of producing a very fine controlled line width. Ink pens had to be dipped into ink frequently. Draftsmen worked standing up, keeping the ink on a separate table to avoid spilling ink on the drawing. Developments in the 20th century included the
parallel motion In kinematics, the parallel motion linkage is a six-bar mechanical linkage invented by the Scottish engineer James Watt in 1784 for the double-acting Watt steam engine. It allows a rod moving practically straight up and down to transmit m ...
drawing board, as well as more complex improvements on the basic T-square. The development of reliable technical drawing pens allowed for faster drafting and stenciled lettering.
Letraset Letraset was a company known mainly for manufacturing sheets of typefaces and other artwork elements using the dry transfer method. Letraset has been acquired by the Colart group and become part of its subsidiary Winsor & Newton. Corporate his ...
dry transfer lettering and half-tone sheets were popular from the 1970s until computers made those processes obsolete.


CGI and computer-aided design

Computer-aided design (generally referred to by the
acronym An acronym is a word or name formed from the initial components of a longer name or phrase. Acronyms are usually formed from the initial letters of words, as in '' NATO'' (''North Atlantic Treaty Organization''), but sometimes use syllables, a ...
CAD) is the use of computer software to create drawings. Today the vast majority of technical drawings of all kinds are made using CAD. Instead of drawing lines on paper, the computer records equivalent information electronically. There are many advantages to this system: repetition is reduced because complex elements can be copied, duplicated and stored for re-use. Errors can be deleted, and the speed of drafting allows many permutations to be tried before the design is finalized. On the other hand, CAD drawing encourages a proliferation of detail and increased expectations of accuracy, aspects which reduce the efficiency originally expected from the move to computerization. Professional CAD software such as
AutoCAD AutoCAD is a commercial computer-aided design (CAD) and drafting software application. Developed and marketed by Autodesk, AutoCAD was first released in December 1982 as a desktop app running on microcomputers with internal graphics controllers. ...
is complex and requires both training and experience before the operator becomes fully productive. Consequently, skilled CAD operators are often divorced from the design process. Simpler software such as
SketchUp SketchUp is a suite of subscription products that include SketchUp Pro Desktop, a 3D modeling Computer-Aided Design (CAD) program for a broad range of drawing and design applications — including architectural, interior design, industrial an ...
and
Vectorworks Vectorworks, Inc. is a U.S.-based software development company that focuses on CAD and BIM software for the architecture, engineering, and construction (AEC), landscape, and entertainment industries. Vectorworks is owned by the Nemetschek Group ...
allows for more intuitive drawing and is intended as a design tool. CAD is used to create all kinds of drawings, from working drawings to
photorealistic Photorealism is a genre of art that encompasses painting, drawing and other graphic media, in which an artist studies a photograph and then attempts to reproduce the image as realistically as possible in another Medium (arts), medium. Although ...
perspective views.
Architectural rendering Architectural rendering, architectural illustration, or architectural visualization is the art of creating three-dimensional images or animations showing the attributes of a proposed architectural design. Computer generated renderings Images tha ...
s (also called visualizations) are made by creating a three-dimensional model using CAD. The model can be viewed from any direction to find the most useful viewpoints. Different software (for example
Autodesk 3ds Max Autodesk 3ds Max, formerly 3D Studio and 3D Studio Max, is a professional 3D computer graphics program for making 3D animations, models, games and images. It is developed and produced by Autodesk Media and Entertainment. It has modeling capab ...
) is then used to apply color and texture to surfaces, and to represent shadows and reflections. The result can be accurately combined with photographic elements: people, cars, background landscape.


Building Information Modeling

Building information modeling Building information modeling (BIM) is a process supported by various tools, technologies and contracts involving the generation and management of digital representations of physical and functional characteristics of places. Building informatio ...
(BIM) is the logical development of CAD drawing, a relatively new technology but fast becoming mainstream. The design team collaborates to create a three-dimensional computer model, and all plans and other two-dimensional views are generated directly from the model, ensuring spatial consistency. The key innovation here is to share the model via the internet, so that all the design functions (site survey, architecture, structure and services) can be integrated into a single model, or as a series of models associated with each specialism that are shared throughout the design development process. Some form of management, not necessarily by the architect, needs to be in place to resolve conflicting priorities. The starting point of BIM is spatial design, but it also enables components to be quantified and scheduled directly from the information embedded in the model.. Building information modelling can be characterized into 3 different levels ranging from 0-3. These levels represent BIM maturity and distinguishes the amount of cooperation in projects. They gauge information being shared throughout the whole process. Level 0 is individualized with no collaboration. Individuals are working on their own CAD files separately and working using their own standards. These are known to be more traditional ways which are being phased out therefore no longer being used today. Level 1 is a mixture of 3D and 2D work. Project teams are required to manage and share data amongst the team. Aspects such as “naming conventions” should be adopted. Level 2 involves all team members using 3D models. Although they might not being using the same information, the built environment is shared through a similar file formats. This level also introduces construction sequencing and cost. Level 3 involves working on a shared project model. The model exists in a central environment and can be modified  by everyone. Conflicting information is reduced due to real time update on models. Later levels include sequencing components, cost estimation and accounting for upfront costs.


Parametric Design

Parametric design is an example of computer intelligence rising in the field of architecture. It is the creation of complex relationships between models. Measurements in parametric design connect by scripts. Users can adjust and adapt their models based on measurements. Changing one measurement will affect other measurements based on the set parameters. The parametric design uses scalability and adjustments which involve complex organic shapes. It allows for the creation of forms that would not be possible with regular 3d modeling or would take copious amounts of time. Models can decrease production time, therefore, allowing for the time allotted to other times of the design process. An argument with parametric design is the question of practicality. At times, it is unsure whether or not these styles properly comply with users wants and needs. Real-life examples of parametric designs would be The Metropol Parasol in Seville or the Canton in Guangzhou China. These forms have a commonality with complex repetitive patterns which twist, bend and curve in dramatic ways. These lattices are unique and there is a complexity tied with how they look. This is coined as “parametricism” by Zaha Hadid which is a style based on digital animation techniques.


Architectural animation

An architectural animation is a short film showing how a proposed building will look: the moving image makes three-dimensional forms much easier to understand. An animation is generated from a series of hundreds or even thousands of still images, each made in the same way as an architectural visualization. A computer-generated building is created using a CAD programs, and that is used to create more or less realistic views from a sequence of viewpoints. The simplest animations use a moving viewpoint, while more complex animations can include moving objects: people, vehicles, and so on.


Digital era in architecture

Schools are producing well versed architecture students who perform in computer assisted collaboration, construction automation and intelligent buildings which promise to have as much impact before the adaptation of technologies. It’s important to understand that architects are problem solvers and critical thinking which has been used since the dawn of man is still being carried on. The idea of innovation, responsiveness and critical thinking will never be “phased out” and always relevant today. Although pure drafting, which involves manually drawing plans for construction, are not being used as often because of CAD, they are training architects to exercise human centered designer and to dive deeper into the culture to ultimately understand clientele. Human centered design involves the human perspective in all steps of the design process.The unpredictability and complexity of humans are unmatched with any pre-programmed systems.


Virtual Reality

Virtual reality in architectural projects helps designers understand spaces from a cognitive perspective. VR stands for virtual reality and explains an experience in a world that doesn't exist. Virtual reality creates an experience generated by a computer program. The use of motion tracking allows for quick manipulation. It creates an individual secluded experience. Architecture firms are using this as a tool to allow employees to learn and create a more engaging experience for both clients and employees. Benefits of VR for architecture include low start-up costs, gaining a competitive edge, avoiding revision, and the duplication of real-world scenarios. By placing a client into the virtual world, the feedback is often more straight forward as the client can walk through based on their needs and aesthetic choices.


Online Practices

Due to COVID-19. architecture firms have increasingly shifted to a digital environment for collaboration. Video conferencing is proving to be a popular way of meeting with clients and simulating the studio environment. Collaboration and communication using programs like Zoom are common consistently being used. Since the beginning of the epidemic, people are expected to be increasingly well versed with technology. Although coordination is often difficult, programs like BIM help improve workflow between both architects clients. However, relationships with clients are harder to facilitate because clients are not able to touch or feel the work. Adaptation is critical as more and more programs are being implemented among the studio to support staff.


Architectural reprographics

Reprographics or reprography covers a variety of technologies, media, and support services used to make multiple copies of original drawings. Prints of architectural drawings are still sometimes called
blueprint A blueprint is a reproduction of a technical drawing or engineering drawing using a contact print process on light-sensitive sheets. Introduced by Sir John Herschel in 1842, the process allowed rapid and accurate production of an unlimited numbe ...
s, after one of the early processes which produced a white line on blue paper. The process was superseded by the dye-line print system which prints black on white coated paper ( Whiteprint). The standard modern processes are the ink-jet printer,
laser printer Laser printing is an electrostatic digital printing process. It produces high-quality text and graphics (and moderate-quality photographs) by repeatedly passing a laser beam back and forth over a negatively-charged cylinder called a "drum" t ...
and
photocopier A photocopier (also called copier or copy machine, and formerly Xerox machine, the generic trademark) is a machine that makes copies of documents and other visual images onto paper or plastic film quickly and cheaply. Most modern photocopiers u ...
, of which the ink-jet and laser printers are commonly used for large-format printing. Although colour printing is now commonplace, it remains expensive above A3 size, and architect's working drawings still tend to adhere to the black and white / greyscale aesthetic.


See also

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Architectural model An architectural model is a type of scale model made to study aspects of an architectural design or to communicate design intent. They can be made from a variety of materials such as paper, plaster, plastic, resin, wood, glass and metal. They ...
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Copyright in architecture in the United States Copyright in architecture is an important, but little understood subject in the architectural discipline. Copyright A copyright is a type of intellectual property that gives its owner the exclusive right to copy, distribute, adapt, display, ...
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Drawing Drawing is a visual art that uses an instrument to mark paper or another two-dimensional surface. The instruments used to make a drawing are pencils, crayons, pens with inks, brushes with paints, or combinations of these, and in more mod ...
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Engineering drawing An engineering drawing is a type of technical drawing that is used to convey information about an object. A common use is to specify the geometry necessary for the construction of a component and is called a detail drawing. Usually, a number o ...
* Layers in a standard architectural drawing *
Linear scale A linear scale, also called a bar scale, scale bar, graphic scale, or graphical scale, is a means of visually showing the scale of a map, nautical chart, engineering drawing, or architectural drawing. A scale bar is common element of map layo ...
*
List of museums with major collections of European prints and drawings This is a list of museums or print rooms with major collections of European old master prints and drawings. This list is incomplete, and should not be regarded as a correct ranking of the major collections. # British Museum, London, England #: ...
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Museum for Architectural Drawing The Museum for Architectural Drawing (german: Museum für Architekturzeichnung) is a private museum in Berlin, Germany run by the Tchoban Foundation. It was opened in June 2013. Three to four exhibitions are shown each year, made up of drawings ...
, Berlin, Germany *
Multiview orthographic projection In technical drawing and computer graphics, a multiview projection is a technique of illustration by which a standardized series of orthographic projection, orthographic two-dimensional pictures are constructed to represent the form of a three-di ...
* Preservation: Library and Archival Science * Structural drawing *
Technical drawing Technical drawing, drafting or drawing, is the act and Academic discipline, discipline of composing Plan (drawing), drawings that Visual communication, visually communicate how something functions or is constructed. Technical drawing is essent ...


References

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Drawing Drawing is a visual art that uses an instrument to mark paper or another two-dimensional surface. The instruments used to make a drawing are pencils, crayons, pens with inks, brushes with paints, or combinations of these, and in more mod ...
Technical drawing