Aug 06, 2017 for the love of physics walter lewin may 16, 2011 duration. 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. The following slides will help show the several methods or types of section views. Basic engineering drawing conventions and abbreviations.
It is the art of representation of geometrical objects on a drawing sheet. Pin, suspension, and strain insulators are used in medium to high voltage. In the case where other types thickness of lines are used for special cases, for. The meaning of a line with certain characteristics has been standardized and will be the same on any drawing. Basic types of lines used in engineering drawings by kelly curran glenn sokolowski.
Engineering drawing the activity produces engineering drawings the documents. Where there is a limited space for dimensioning, the. This video will help you to understand the difference between different types of lines used in technical drawing. Drawing is used to record objects and actions of everyday life in an easily recognizable manner. Slide set 1 alphabet of lines and precedence of lines. The use of a right type of line results in a correct drawing. These are used for drawing irregular curved lines, other than circles or arcs of circles.
Types of insulators in transmission lines electrical4u. Engineering drawing course and in minimizing discrepancies prevailing among the different teaching and training health institutions. While stay and shackle insulators are mainly used in low voltage applications. Dimensioning a short series of lectures on engineering drawing as part of engg1960 by paul briozzo. 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. These line conventions must be understood in order to read drawings. The diagonal lines on the section drawing are used to indicate the area that has been theoretically cut. An introduction to civil engineering different types of lines. It can also be used as a reference material for professional sanitarians. In engineering drawing required lines are should be maintain maximum thickness. Horizontal and vertical construction lines are lightly drawn to outline the basic shape of the main face of the part. Upper case letters should be used except for conventional refs.
Engineering drawing 10 different types of lines used in engineering drawing for general engineering drawings, the types of lines recommended by the bureau of indian standards shown in table 2 must. Technical drawings are drawn with different types of lines. In art, lines may be the path made by a pencil or the. The bureau of indian standards has prescribed the types of lines in its code is107141983 to be used for making a general engineering drawing. Exact thickness may vary according to the size and type of drawing. Engineering drawing an overview sciencedirect topics. Mechanical engineering engineering drawing manual drawing cadd 9 10. To equip students with basic skills required in engineering drawings. Different types of lines basic tips for civil engineering drawing. 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. Engineering drawing practice for schools 81 colleges bureau ofindianstandards manak bhavan, 9 bahadur shah zafar marg new delhi 12. Each type is defined by general description, application guide lines, and specific content requirements. It may be tempting to use straightedged triangles or rulers for drawing straight lines and a compass to draw circles. Engineering drawing is a two dimensional representation of three dimensional objects.
May 02, 2018 there are various types of lines recommended by bureau of indian standards, s. 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. And the following list shows the significance of each of these lines. Line types and their application there are technical drawings of different lines, whose application for underwriting certain elements is foreseen. Pdf engineering drawing for beginners researchgate. Engineering drawings lecture letters numerals and lines. The alphabet of lines in technical drawing lines in technical drawings are part of a specialized graphic language that is standardized throughout industry. Drawing methods and types parallel line development is used for the pattern development of pipe work, prisms, and any cylindrical shape. May 14, 20 type f lines are type ftypo lines, except they are used for drawings in electro technology. Line types used in technical drawing are used for different purposes to provide specific information to the people looking at the drawing. Usually, a number of drawings are necessary to completely specify even a. 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 standard was prepared to define the accepted drawing types used to establish engineering requirements.
If you are using a pencil or felttip marker, press lightly when drawing the construc. It was delivered by sir apurva soumitra at aligarh muslim. Engineering drawing example 3 types of drawings all drawings artistic technical sketches conceptual diagrams design technical. A tsquare is a technical drawing instrument primarily used for drawing horizontal lines on a drafting table, it is also used to guide the triangle that is used to draw vertical lines. In engineering drawing, we make use of different lines and line styles to convey. Mechanical engineering engineering drawing is completely different from artistic drawing, which are used to express aesthetic, philosophical, and abstract ideas.
A common use is to specify the geometry necessary for the construction of a component and is called a detail drawing. Pattern development can be marked directly onto flat metal plate. If you see any drawing you may find different types of line. Engineering drawing course and in minimizing discrepancies prevailing among. Engineering drawing 1 engineering drawing 2 what is engineering drawing an engineering drawing, a type of technical drawing, which is used to fully and clearly define requirements for engineered items with scales. It is a basic requirement and learned early in drafting instruction. Engineering drawing different types of lines and their uses. Course introduction types of drawings engineering also known as production or working drawings. Sketch final drawing artistic drawings convey an idea, feeling, mood or situation. Design and drafting on computer are cheap and less time consuming. Graphic language use lines to represent the surfaces, edges and contours of objects. Patterns are often turned into templates using paper or thin sheet steel. The line conventions most often encountered in construction prints are shown and described in.
Engineering drawing has a specific calculation base. The name tsquare comes from the general shape of the instrument where the horizontal member of the t blade slides on the side of the drafting table. Line types many types of lines are used to create art. For the love of physics walter lewin may 16, 2011 duration. Textbook of engineering drawing, second edition xfiles. Each type of line has a very precise symbolic meaning. Instruments used in engineering drawing its uses and importance. Technical drawings represent the exact shape, dimensions and composition of an object.
Types of lines engineering drawing engineering graphics. For example, 1 100 is a typical scale used for civil engineering drawings. Pin insulators are the earliest developed overhead insulator, but are still commonly used in power. The second is a drawing done with instruments, known as a final drawing. Dimension lines are used to show the extent and the direction of dimensions. Work on this standard considered the types of engineering drawings most frequently used by business, industry, and government com. An engineering drawing provides all information about size, shape, surface type, materials etc.
Ppt engineering drawing powerpoint presentation free to. Composition of graphic language the language is known as drawing or drafting. The graphics of engineering design and construction may very well be the most important course of all studies for an. The lines are commonly used in drawing with specified reason and lines are different types. In drawing lines are with dark it is representing the actual image of drawing. Types of linesengineering drawing and graphicslecture slides. Technical drawing lines are used for different purposes to provide specific information for designers, manufacturers, etc. The person who will read drawings have to learn what they mean. In engineering drawing required lines are should be. Proper dimensioning requires engineering judgment and thorough knowledge of the practices and requirement of the production department.
The cut line is called a cutting plane, and can be done in several ways. Objectives at the end of this section you should be able to. The first is a drawing done without instruments, known as a sketch. Continuous thick lines are used to indicate visible outlines. If possible, dimension lines are aligned and grouped for uniform appearance. An engineering drawing is used to fully and clearly define requirements for engineered items. Ppt engineering drawing powerpoint presentation free. A drawing can be done using freehand, instruments or computer methods. This lecture part of lecture series for course engineering drawing and graphics. Table 1 shows the types and thickness of lines used for various purposes. 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. You can also view this article in slides and download in pdf. Letters, numerals and lines upper case letters should be used except for conventional refs.
Drawing just like photography is one of the basic forms of visual communication. Object or visible lines thick dark line use to show outline of object, visible edges and surfaces. Technical drawing line types engineering desing technology. D identifliilre types used on engineering drawings.
These lines are called section lining or crosshatching. Engineering drawing is completely different from artistic drawing, which are used to express aesthetic, philosophical, and abstract ideas. One of the most widely used forms of graphic communication is the drawing. By the end of this chapter, you will be able to create a technically correct orthographic projection using proper projection techniques. What is the importance of different types of lines in. The following are the types of lines used in engineering graphics. Jan 07, 2019 there are 5 types of insulators used in transmission lines as overhead insulation. An engineering drawing is a type of technical drawing that is used to convey information about an object.
A short series of lectures on engineering drawing as part of engg1960. In this article, you will learn about the types of lines used in engineering drawing. Engineering drawing manual drawing cadd computer has a major impact on the methods used to design and create technical drawings. Lines of different thickness and features are used for specific use fig a and fig b. More over, other subsidiary topics like sectioning, projection of points and lines. Correct usage of this alphabet of lines is essential whether you use traditional drafting methods or cad. Freehand sketching engineering fundamentals program.
They are dotted lines, but a long line of 1020 mm, then a gap, then a small line of 2 mm. There are various types of lines recommended by bureau of indian standards, s. Basic types of lines used in engineering drawings wisc. The lines are thin and are usually drawn at a 45degree angle to the major outline of the object. Different line types are used to indicate visible, hidden and symmetry lines. Line types are also a language type to communicate between technical people. For general engineering drawings, the types of lines recommended by the bureau of indian standards shown in table 2 must be used. A line can be a straight or a curve, they must have a specific starting point and an endpoint, and may be with or without interruption through his. 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. Engineering drawings can be produced to a good professional standard if the following points are observed.
Drafting students or those reading the drawings have to learn what they mean, just as one learns a new language. Notice on the above drawing that the largest dimension is placed on the outside of the smaller dimensions. The graphics of engineering design and construction may very well. Engineering drawing different types of lines and their. In this highly interactive object, learners associate basic line types and terms with engineering drawing geometry. Line types and their application lines technical drawing.