Each type of line has a very precise symbolic meaning. Aug 06, 2017 important lines used in engineering drawing and how they are used. In drawing lines are with dark it is representing the actual image of drawing. Dept of mechanical engineering and mechanics, drexel university guidelines for dimensioning 7.
Correct usage of this alphabet of lines is essential whether you use traditional drafting methods or cad. A drawing can be done using freehand, instruments or computer methods. Dimension lines are used to show the extent and the direction of dimensions. Freehand sketching engineering fundamentals program. Engineering drawing an overview sciencedirect topics. An orthographic projection drawing is an important part of the engineering process. An engineering drawing is a type of technical drawing that is used to convey information about an object. An introduction to civil engineering different types of lines. Types of lines engineering drawing engineering graphics. Proper dimensioning requires engineering judgment and thorough knowledge of the practices and requirement of the production department. Structural lines come in a variety of types with different characteristics and qualities. Basic types of lines used in engineering drawings by kelly curran glenn sokolowski.
Lesson 1 manual drafting tools for engineering drawing 4 lesson 2 types of scales 1417 lesson 3 line and lettering 1837 module 2 projections lesson 4 dimensioning technique 3849 lesson 5 orthographic projections 5082 module 3 sectional views lesson 6 sectional view 83105 lesson 7 types of projections 106123. There are various types of lines recommended by bureau of indian standards, s. More than merely the drawing of pictures, it is also a language a graphical language that communicates ideas and information from one mind to another. Object or visible lines thick dark line use to show outline of object, visible edges and surfaces. Assemblies with several parts should be lined with varying angle section lines. Drawing is used to record objects and actions of everyday life in an easily recognizable manner. Each engineering field has its own type of engineering drawings. It is a language of communication between architects and engineers, usually to convey information about the object. Architectural symbols and conventions sheet layout the drawing paper need to be framed with a border line. Contour lines contour lines describe the shape of an object, and include interior detail. Technical drawing lines are used for different purposes to provide specific information for designers, manufacturers, etc. Drawing just like photography is one of the basic forms of visual communication. Horizontal and vertical construction lines are lightly drawn to outline the basic shape of the main face of the part.
Instruments used in engineering drawing its uses and importance. The cut line is called a cutting plane, and can be done in several ways. Completion drawings as built drawings drawings showing the. Engineering drawing different types of lines and their uses in this video i present the most uses lines in eng drawing and where those are used. In solidworks, inserted dimensions in the drawing are. The use of a right type of line results in a correct drawing. The bureau of indian standards has prescribed the types of lines in its code is107141983 to be used for making a general engineering drawing. The graphics of engineering design and construction may very well be the most important course of all studies for an. Basic types of lines used in engineering drawings wisc. Types of drawingstypes of drawings civil engineering drawing civil engineering drawing civil engineering drawings include. For general engineering drawings, the types of lines recommended by the bureau of indian standards shown in table 2 must be used. Types of lines in engineering drawing types of line in engineering graphics by ashish sir the video is an introduction to the lines that are commonly used on engineering drawings.
I guess like any type of technical drawing you need to have an understanding of what device youre trying to illustrate, its functions, and the space creators need to understand while assembling. 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. Objectives at the end of this section you should be able to. What are the types of lines in engineering drawing. Orthographic projection drawing the following statements will help you understand orthographic projection drawings. It may be tempting to use straightedged triangles or rulers for drawing straight lines and a compass to draw circles. File type pdf engineering drawing design 5th edition engineering drawing design 5th edition. Engineering drawing practice for schools 81 colleges bureau ofindianstandards manak bhavan, 9 bahadur shah zafar marg new delhi 12. Drafting students or those reading the drawings have to learn what they mean, just as one learns a new language. Nov 03, 2014 engineering graphics projection of points and lines 1.
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. In the case where other types thickness of lines are used for special cases, for. The following slides will help show the several methods or types of section views. Engineering graphics is a set of rules and guidelines that help you create an engineering drawing. Mec076 engineering drawing interpretation 1 resource package. Longer dimensions are placed outside shorter ones so that witness lines do not cross dimension lines. Technical drawing is concerned mainly with using lines, circles, arcs etc. Here you can download engineering drawing book by n. If you see any drawing you may find different types of line. Engineering drawing pdf book free download agrimoon. If the outline of the object has 45 degree lines, 30 or 60 degree lines should be used.
This standard was prepared to define the accepted drawing types used to establish engineering requirements. A section is used to show the detail of a component, or an assembly, on a particular plane which is known as the cutting plane. Engineering drawing text book by nd bhatt pdf latest edition. A compressed handbook designed for the students of engineering disciplines for learning the basics of engineering drawing. Line types are also a language type to communicate between technical people. They can be delicate and thin like a spiders web, or thick and bold like a row of telephone poles. An orthographic projection drawing may consist of two or more views. However, it is very important that the drawing produced to be accurate and clear. Design drawing vs technical drawing drew paul bell. Engineering drawings can be produced to a good professional standard if the following points are observed.
D identifliilre types used on engineering drawings. It shows the correct shape and the exact dimensions necessary to manufacture the object. Composition of graphic language the language is known as drawing or drafting. Slide set 1 alphabet of lines and precedence of lines. In engineering drawing required lines are should be maintain maximum thickness.
The first is a drawing done without instruments, known as a sketch. 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. May 14, 20 now we are going discus one of the important part of c ivil engineering drawing. Sketch final drawing artistic drawings convey an idea, feeling, mood or situation. Usually, a number of drawings are necessary to completely specify even a simple component. Continuous thick lines are used to indicate visible outlines. 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. Mechanical engineering uses of different types of lines in a given drawing 19 19.
This contour drawing gives an indication of general physical features. Dimensioning a short series of lectures on engineering drawing as part of engg1960 by paul briozzo. Engineering drawing course and in minimizing discrepancies prevailing among the different teaching and training health institutions. If possible, dimension lines are aligned and grouped for uniform appearance. Pdf engineering drawing for beginners researchgate. Download engineering drawing text book by nd bhatt pdf latest edition for b. Jan 21, 2018 the types of lines and its apications which are the basics of the engineering graphics. The alphabet of lines in technical drawing lines in technical drawings are part of a specialized graphic language that is standardized throughout industry. May 02, 2018 there are various types of lines recommended by bureau of indian standards, s. Architectural plans structural working drawings foundation plan, reinforcement details, utility plans such as water supply and electrification plan etc.
In art, lines may be the path made by a pencil or the. Engineering drawing the activity produces engineering drawings the documents. 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 lines are commonly used in drawing with specified reason and lines are different types. Exact thickness may vary according to the size and type of drawing. Work on this standard considered the types of engineering drawings most frequently used by business, industry, and government com. Since technical drawings are made of lines, it is logical that the first step in learning to read a drawing is to learn the meaning of each kind of line. Orthographic projection of points, lines, planes and solids. Structural lines structural lines are the lines that hold a design together.
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. Graphic language use lines to represent the surfaces, edges and contours of objects. Projection of points there are basically nine type of projections of point is space. May 14, 2020 the lines are commonly used in drawing with specified reason and lines are different types. Tech 1styear subject engineering graphics or engineering. Whenever possible, dimensions are not given to hidden lines.
If you are using a pencil or felttip marker, press lightly when drawing the construc. The graphics of engineering design and construction may very well. Line types used in technical drawing are used for different purposes to provide specific information to the people looking at the drawing. Standards and conventions no effective communication without an. An engineering drawing is a drawing or a set of drawings that communicates an idea, design, schematic, or model. The second is a drawing done with instruments, known as a final drawing. Technical drawings represent the exact shape, dimensions and composition of an object. Dimensions are classified into the following types. Types of lines basics of engineering graphics engineering. A section view is a view used on a drawing to show an area or hidden part of an object by cutting away or removing some of that object. The person who will read drawings have to learn what they mean.
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