Mec076 engineering drawing interpretation 1 resource package. 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. Technical drawing lines are used for different purposes to provide specific information for designers, manufacturers, etc. Illinois nrcs engineering drawings noticethe following standard drawings have been developed to assist in the design of typical nrcs engineering practices in illinois. This lines are to showing break in a long continuous series of lines on structural drawing and also indicating the break on an adjacent member to which a component is attached. At latest count, the department has 43 active faculty, 56 staff members, 311 graduate students, 50 postdoctoral associates, research associates and visitors. Continuous thin freehand lines are used in engineering drawing for showing sectional boundary lines on part and for short break lines. In engineering drawing required lines are should be maintain maximum thickness. Type a lines show the outline of the feature of an object. Visible lines represent features that can be seen in the current view meaning of lines hidden lines represent features that can not be seen in the current view center line represents symmetry, path of motion, centers of circles, axis of axisymmetrical parts dimension and extension lines indicate the sizes and location of features on a drawing. Mechanical engineering drawing concordia university.
Correct usage of this alphabet of lines is essential whether you use traditional drafting methods or cad. Drawings for specialized engineering disciplines e. Engineering drawings lecture letters numerals and lines. Mech2400 5400 engineering drawings lecture introduction. Bhuiyan shameem mahmood a drawing can be done using freehand, instruments or computer methods. Horizontal and vertical construction lines are lightly drawn to outline the basic shape of the main face of the part. The following information is presented to provide a basic. Dimensions and types of dimensioning systems complete guide. In the case of weldments, the parts shall not be individually detailed on separate drawings. This video is called standard line types, or standard drawing line types. D identif liilre types used on engineering drawings. Each type of line has a very precise symbolic meaning. If you are using a pencil or felttip marker, press lightly when drawing the construc.
Used for projection, dimensioning, leader lines, hatching and short centre lines. Hello friends, in this video we are going to discuss about the types of lines and its apications which are the basics of the engineering graphics. Proper dimensioning requires engineering judgment and thorough knowledge of the practices and requirement of the production department. A common use is to specify the geometry necessary for the construction of a component and is called a detail drawing. Engineering drawing types of lines,lettering and dimensioning easy methods. Chandrasekharan, director mech engg, bis director general, bis exofficio izfer7lhcr secretary shri s. Basic types of lines used in engineering drawings wisc. Drawing just like photography is one of the basic forms of visual communication. Nag joint director mech engg, bis panel for preparation of educational material, edc 7o.
It descnoes typical applications and minimum content requirements. An engineering drawing, a type of technical drawing, which is used to fully and clearly define requirements for engineered items with scales. Objectives at the end of this section you should be able to. Each engineering field has its own type of engineering drawings. This type of representation is not used for technical. This standard defines more on types of engineering drawing. Dimensioning engineering drawings an engineering drawing must be properly dimensioned in order to convey the designers intent to the end user. Fundamentals handbook engineering symbology, prints, and. Slide set 1 alphabet of lines and precedence of lines. Continuous thin straight with zigzags dashed thin line. Before using any of the standard drawings or details, the designer should verify that the standard applies to the site and that the design limitations are not exceeded.
Graphic language in engineering application use l ines to represent the surfaces, edges and contours of objects. P4 convener shri prakash sinch members representing. The person who will read drawings have to learn what they mean. In drawing lines are with dark it is representing the actual image of drawing. The alphabet of lines in technical drawing lines in technical drawings are part of a specialized graphic language that is standardized throughout industry. Other parties may have an interest in design collaboration, procurement purchasing. However, it is very important that the drawing produced to be accurate and clear. Dimensions are classified into the following types. Welcome to the department of mechanical engineering, part of the college of science and engineering, serving the state and nation as a leading center of education, research, and innovation.
Engineering drawing course and in minimizing discrepancies prevailing among the different teaching and training health institutions. It is a language of communication between architects and engineers, usually to convey information about the object. Lines that are not parallel to these axes will not be of their true length. The graphics of engineering design and construction may very well be the most important course of all studies for an. For general engineering drawings, the types of lines recommended by the bureau of indian standards shown in table 2 must be used.
Hidden lined thick hidden lined thick type lines consist of thick short dashes, closely and evenly spaced. Conversion of pictorial view into orthographic views. Multiview projection drawing how to generate complete the representation separate the top from the profile view along the edge. Continuous thick lines are used to indicate visible outlines. By varying the thickness and construction of lines on a drawing, we can express meaning which is otherwise difficult to express. Engineering graphics is a set of rules and guidelines that help you create an engineering drawing. Engineering drawing manual drawing cadd computer has a major impact on the methods used to design and create technical drawings. It can also be used as a reference material for professional sanitarians. Letters, numerals and lines upper case letters should be used except for conventional refs. Technical drawings represent the exact shape, dimensions and composition of an object. 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. Home mechanical engineering college of science and. 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. Design and drafting on computer are cheap and less time consuming.
Sketch final drawing artistic drawings convey an idea, feeling, mood or situation. An engineering drawing is a drawing or a set of drawings that communicates an idea, design, schematic, or model. Now we are going discus one of the important part of c ivil engineering drawing. Pieces of the inseparable assembly may be detailed either on separate detail drawings or on the inseparable assembly drawing itself. The first is a drawing done without instruments, known as a sketch. These sheets are available through the national design, construction, and soil mechanics center. An engineering drawing is a type of technical drawing that is used to convey information about an object.
Dimensions are inserts by breaking the dimension lines at the middle. There are various types of lines recommended by bureau of indian standards, s. In solidworks, inserted dimensions in the drawing are. In art, lines may be the path made by a pencil or the stroke of a paintbrush. The lines are commonly used in drawing with specified reason and lines are different types. If possible, dimension lines are aligned and grouped for uniform appearance. Hidden lines thin hidden lines thin type lines consist of thin short dashes, closely and evenly spaced. Dimension lines are used to show the extent and the direction of dimensions. National engineering handbook 3 size drawing text size for each type of text should be consistent throughout the drawing set. If you see any drawing you may find different types of line.
Basic types of lines used in engineering drawings by kelly curran glenn sokolowski. What are the types of lines in engineering drawing. It is the 23rd video in the engineering design, modeling and graphics series, and. Use only one placing of dimension system in one entire drawing. Continuous thin used for limits of partial or interrupted views and sections if the limit is not an axis. 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 text book by nd bhatt pdf latest.
Dimensions provide the information needed to specify the size and location of every feature on the object. If a client of yours is having difficulty visualizing a design, what type of drawing would be the easiest to understand. Engineering drawing pdf notes ed pdf notes smartzworld. Sketch lines provide more detail than outlines, contour lines. If the isometric drawing can show all details and all dimensions on one drawing, it is ideal. Types of line engineering drawing this topic related to the various types of line which are in engineering. The mechanical engineering branch, mechanical systems division, has been delegated. In this highly interactive object, learners associate basic line types and terms with engineering drawing geometry. Engineering drawing is completely different from artistic drawing, which are used to express aesthetic, philosophical, and abstract ideas. Drawing is used to record objects and actions of everyday life in an easily recognizable manner. Break lines type lines are ruled, short, zigzag thin lines drawn to represent the breaks. In this type of dimensioning system, dimensions are placed in such a way that they can be read from the bottom edge of the drawing sheet.
This module introduces each type of drawing and its various formats. Line types are also a language type to communicate between technical people. A short series of lectures on engineering drawing as part of engg1960 by paul briozzo. This standard was prepared to define the accepted drawing types used to establish engineering requirements. An engineering drawing is a technical not artistic drawing which clearly defines and communicates a design to other interested parties. Different types of lines basic tips for civil engineering drawing. In this engineering drawing 1st year notes contents. This drawing type generally permits selection to be performed by any competent inspection or test facility including those of the original manufacturer, the selecting design activity, or third party. The second is a drawing done with instruments, known as a final drawing. A compressed handbook designed for the students of engineering disciplines for learning the basics of engineering drawing.
These lines are drawn to represent hidden or invisible edges of the objects. Exact thickness may vary according to the size and type of drawing. 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. In art, lines may be the path made by a pencil or the. Ppt engineering drawing powerpoint presentation free. Usually, a number of drawings are necessary to completely specify even a simple component. Pdf a textbook of engineering drawing a textbook of. Technical drawing is concerned mainly with using lines, circles, arcs etc. Pdf this book has been designed to cater the needs of the firstyear engineering students of all branches. Mcq on engineering drawinggraphics royal mechanical. Types of lines engineering drawing engineering graphics.