The mechanical engineering branch, mechanical systems division, has been delegated. Known as hidden details are shown on the drawing as dotted lines. By the end of this chapter, you will be able to create a technically correct orthographic. Engineering drawing notes and legends drawings are comprised of symbols and linesthat represent components or systems. I have amalgamated the definitions from the engineering drawing supplement and the construction drawing supplement together. Correct usage of this alphabet of lines is essential whether you use traditional drafting methods or cad. Drafting is a technical drawing used by designers to. Fundamentals handbook engineering symbology, prints, and. Line types used in technical drawing are used for different purposes to provide specific information to the people looking at the drawing. Line types and thicknesses engineering drawing joshua.
The mechanical engineering branch, mechanical systems division, has. Basic types of lines used in engineering drawings wisc. Longdashed doubledotted line kinds thickness ratio. Engineering drawing text book by nd bhatt pdf latest. The text of the book covers the complete syllabus of the subject engineering drawing graphics of various technical universities all over the country and is also linked with a website, an. Information extraction from scanned engineering drawings. The thickness of the lines must be chosen according to the type and size of the drawing from any of the six groups given in table 1. Engineering drawing different types of lines and their.
Voisinet computeraided engineering drawing using autocad. Engineering drawing practices types and application of engineering drawings. Engineering drawing an overview sciencedirect topics. D identifliilre types used on engineering drawings. Although a majority of the symbols and lines are selfexplanatory or standard as described in later modules, a few unique symbols andconventions must be explained for each drawing. The iso type k lines are thin, discontinuous and chain dotted with a double dot, as shown in.
Can also be used to show extension of a surface to a theoretical intersection as shown in b. Engineering drawing list of high impact articles ppts. Engineering drawing lettering and lines presentation. Engineering drawing and sketching introduction one of the best ways to communicate ones ideas is through some form of picture or drawing. Engineering drawing manual drawing cadd computer has a major impact on the methods used to design and create technical drawings. Composition of graphic language the language is known as drawing or drafting. By varying the thickness and construction of lines on a drawing, we can express meaning which is otherwise difficult to express. For example, 1 100 is a typical scale used for civil engineering drawings. Ce 100 civil engineering drawing sessional lab manual. Technical drawing lines are used for different purposes to provide specific information for designers, manufacturers, etc. Leader lines thin lines used to connect a specific note to a feature.
Different line types are used to indicate visible, hidden and symmetry lines. Putting the line types, line weights and line type scales together, we get the following line type definitions to use in our drawings. An engineering detail drawing contains the key points to enable the manufacture or description of a single component that defines and communicates part of a complete design to other interested parties. Contour lines contour lines describe the shape of an object, and include interior detail. Lines, which are tangent and at 900 are considered perpendicular. Each type is defined by general description, application guide lines, and specific content requirements. Orthographic projection of points, lines, planes and solids. Graphic language use lines to represent the surfaces, edges and contours of objects. Objectives at the end of this section you should be able to.
What is the importance of different types of lines in. Dimensioning a drawing also identifies the tolerance or. Basic types of lines used in engineering drawings wisconline. Design and drafting on computer are cheap and less time consuming. Pdf a textbook of engineering drawing a textbook of. A drawing can be done using freehand, instruments or computer methods. Drafting students or those reading the drawings have to learn what they mean, just as one learns a new language.
Line types identification purpose in this section you will be able to recognise and interpret different line types, and the need for variation in thickness used on engineering drawings. This line type is used for visible outlines, general details, existing buildings and landscaping in site plans. Feb 02, 2015 engineering drawing system committee edsc will have the responsibility for making revisions or adding supplements to this procedural requirement. Ioe engineering drawing solution i and ii ioe notes. Mec076 engineering drawing interpretation 1 resource package. Shoaf space task group engineering division of the proposed. Although a majority of the symbols and lines are selfexplanatory or standard as described in later modules, a few unique symbols andconventions must be. For general engineering drawings, the types of lines recommended by the bureau of indian standards shown in table 2 must be used. Technical drawings lines,geometric dimensioning and. Its also used for hatching and outlines of revolved sections. Engineering drawing notes engineering tolerance screw. P3 interpret the main features of a given engineering drawing which complies with drawing standards ie4 p4 produce detail drawings of three given singlepiece components ct1 p5 produce an assembly drawing of a product containing three parts ct1.
Engineering symbology, prints and drawings a pdh online. Engineering technology simulation learning videos 79,976 views 5. A centerline is a light broken line used to indicate the centerline of a. Engineering drawing text book by nd bhatt pdf latest edition. Basic types of lines used in engineering drawings by kelly curran glenn sokolowski. Extension lines thin lines used to establish the extent of a dimension. This standard was prepared to define the accepted drawing types used to establish engineering requirements. An engineering drawing is a type of technical drawing that is used to convey information about an object. Show full abstract graphics and engineering design laboratory i. However other metric or imperial units may be used. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext.
Each type of line has a very precise symbolic meaning. Mech2400 5400 engineering drawings lecture introduction. Engineering drawing different types of lines and their uses. Continuous thin lines are used for the dimensions line, leader lines, fictitious line, hatching lines hatching lines when drafting of model drawing to show as a sectioning and also for the imaginary intersection of surfaces, revolved sections, adjacent parts, tangent bend lines and fold, when representing the circular section then thin lines are in center of the part. An engineering drawing, a type of technical drawing, is used to fully and clearly define requirements for engineered items. Here you can download engineering drawing book by n. In this highly interactive object, learners associate basic line types and terms with engineering drawing geometry. The gsfc engineering drawing standards manual is the official source for the requirements and interpretations to be used in the development and presentation of engineering drawings and related documentation for the gsfc. A leader line is a thin solid line that is used to associate a note, symbol or dimension with a feature. Engineering drawings are usually created in accordance with standardized conventions for layout, nomenclature, interpretation, appearance, line. This is the line type you would use for dimension lines, projection lines, intersection lines, and headers. Graphic language in engineering application use l ines to represent the surfaces, edges and contours of objects.
Engineering drawings the blank engineering drawing form this blank template can be printed off the 2. You can use this form to make your own production drawings for class. Line types are also a language type to communicate between technical people. The following are the types of lines used in engineering graphics. On a drawing used in american industry, all dimensions. Drawing just like photography is one of the basic forms of visual communication.
Sep 15, 2015 engineering drawings specify requirements of a component or assembly which can be complicated. It is a basic requirement and learned early in drafting instruction. Usually, a number of drawings are necessary to completely specify even a. Tech 1styear subject engineering graphics or engineering. Integration of the engineering design and engineering graphics courses was in 4 respects. In engineering drawing, engineering related objects like buildings, walls, electrical fittings, pipes, machines etc. Key to successful drafting is to have a good technical knowledge of these various line characteristics to understand where and when to apply them in technical drawing. Engineering drawing system committee edsc will have the responsibility for making revisions or adding supplements to this procedural requirement. Engineering drawings can be produced to a good professional standard if the following points are observed.
Download engineering drawing text book by nd bhatt pdf latest edition for b. Engineering drawing is completely different from artistic drawing, which are used to express aesthetic, philosophical, and abstract ideas. There are various types of lines recommended by bureau of indian standards, s. Leader lines are typically used to call out radii and diameters. Feb 10, 2014 engineering drawing is completely different from artistic drawing, which are used to express aesthetic, philosophical, and abstract ideas. This will get you used to the look and feel of an engineering drawing. Several engineering drawing software with more accuracy are available. Object or visible lines thick dark line use to show outline of object, visible edges and surfaces. Click on the link below to download the book click here download free. The drawings of the engineer are an obvious case of making visible the practical expression of the profession, the interpretation of which has a direct impact on the final product. Drawing is used to record objects and actions of everyday life in an easily recognizable manner. Engineering drawing is a formal and precise way of communicating information about the shape, size, features and precision of physical objects.
But, drawing on paper is still being used in some areas and for small constructions. Work on this standard considered the types of engineering drawings most frequently used by business, industry, and government com. The person who will read drawings have to learn what they mean. To make sure everyone interprets drawings the same way, the use of each type and thickness of lines is defined in australian standard 1100 drawing practice. Engineering drawing is compulsory course for all faculties of engineering and the objective of this course is to help student develop basic projection concepts with reference to points, lines, planes and geometrical solids. Instruments used in engineering drawing its uses and.
Discipline area number of representatives flight design engineer 4 facility design engineer, 2 model design engineer 1 engineering drawing files 1. This video will help you to understand the difference between different types of lines used in technical drawing. Examples of this type of line can be seen in the movable jaw detailed drawing. Engineering drawing notes and legends engineers edge. A common use is to specify the geometry necessary for the construction of a component and is called a detail drawing. In art, lines may be the path made by a pencil or the. The alphabet of lines in technical drawing lines in technical drawings are part of a specialized graphic language that is standardized throughout industry. It primarily consists of sketching the actual component, for example, a machine, with its exact dimensions.
For example, a contour drawing of a persons face would include a line defining the shape of the head and additional lines that describe the surfaces and planes of the facial features. The noun or noun phrase shall be used in singular form, except for items such as tongs, gloves, fuses. Engineering drawing fce 142 group members gichuru wainaina samuel nyakundi. And the following list shows the significance of each of these lines.
This contour drawing gives an indication of general physical features. Jan 22, 2018 engineering technology simulation learning videos 79,976 views 5. Engineering drawing, also called technical drawing and engineering graphics, is the. Usually the word scale is used for an instrument used for drawing straight lines. Fundamentals of engineering drawing for technical students and professional. It is used as a boundary line of the drawing sheet and title block lines at the bo. Exact thickness may vary according to the size and type of drawing. Remove the final construction lines to see the finished drawing section views section views are used to clarify internal detail and to avoid a a dimensioning to hidden lines the are established by referencing a cutting plane cutting planes depict the exact location on the part from which the section view will. Engineering drawing, most commonly referred to as engineering graphics, is the art of manipulation of designs of a variety of components, especially those related to engineering.1595 233 1179 66 433 104 21 542 62 75 778 711 788 375 1095 1178 1494 1616 1346 379 264 914 551 183 45 1510 844 184 1122 630 1222 535 409 1132 1408 1130 577 658 20