Nnprojection of straight lines in engineering graphics pdf

Engineering graphicsintroduction and drawing instruments. Visible object lines, hidden lines, centerlines, cutting plane lines. For the railway network it contains two types of feature classes, lines and points. Different surfaces and planes form the configuration or shape of any object. Objectives to develop in students graphic skill for communication of concepts, ideas and design of engineering products and expose them to existing national standards related to technical drawings. Introduction to engineering drawing principles of engineering drawing graphics. As we know,when the point is placed in second quadrant,its plan and elevation should in one plane,in this question it will be above the reference line. Engineering graphics 1st yr projection of points and lines. The projections of a straight line are obtained by joining the top and front views of. Revolving or moving straight lines in different ways obtains these surfaces and planes. In this highly interactive object, learners associate basic line types and terms with engineering drawing geometry.

Projection of a point in space a point is behind the frontal plane by d units and below the horizontal plane by h units. A common use is to specify the geometry necessary for the construction of a component and is called a detail drawing. What is the importance of different types of lines in. Since the line is 70 mm in front of the right pp draw the x1y1 line at a distance of 70 mm on the right side of the front view. The above position resulting in straight line as a top view and front view. Assume the line to be located in each of the four quadrants by turns. An engineering drawing is a type of technical drawing that is used to convey information about an object. The end a is 12 mm in front of the vp and 15 mm above hp. A straight line 55 mm long makes an angle of 30 deg to the hp and 45 deg to the vp. There are two essential parts of a tsquare, namely the stock and the blade. Top views of two end points of a straight line, when joined, give the top view of the straight line. The lines or rays drawn from the object to the plane are called projectors. New content updates throughoutin particular sections on using the internet in graphics, electronic drawings, and design sections. The space between two parallel lines the space within a circle the space between two concentric circles the space within a cylinder the space between two coaxial cylinders.

Introduction to engineering drawing principles of engineering drawinggraphics. The concepts emphasized in class and studio will be the primary material covered, but all. A hologram is a recording in a two or threedimensional medium of the interference pattern formed when a point source of light the reference beam of fixed wavelength encounters light of the same fixed wavelength arriving from an object the object beam. Through 0 the point of intersection of xy and x1y1, lines draw a 45 line. Sep 10, 2012 how to make teaching come alive walter lewin june 24, 1997 duration. Engineering graphics tutorials online engineering free. It is a general principle of engineering drawings that they are projected using standardized, mathematically certain projection methods and rules standardsconventions. Depending on the feature to be toleranced and the way in which it is dimensioned, the tolerance zone will be one of. Technical drawing with engineering graphics 14th edition pdf. Projection of straight lines in engineering drawing pdf. For courses in engineering graphics technical drawing and draftingtechnical sketching. Bresenhams line algorithm is a line drawing algorithm that determines the points of an. Nov 03, 2014 engineering graphics projection of points, projection of lines slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.

Engineering graphicsintroduction and drawing instruments engineering drawing. Engineering graphics projection of straight lines youtube. How to draw and edit curves in illustrator adobe illustrator tutorials. Select nearest point to observer and draw all lines starting from it. This document is highly rated by students and has been viewed 85096 times. Engineering drawing fce 142 group members gichuru wainaina richard wageche merkle awuor joseph ngugi william wambulwa chris gichuki thomas mabelle samuel nyakundi sheldon muganda alex ndeke joseph mureithi samuel ngigi abdi adan geoffery mulosi standard engineering lettering and lines elements of engineering drawing engineering drawing are made up of graphics. And the following list shows the significance of each of these lines. As per iso convention the first angle of projection is used. Projection of points and straight lines located in the first quadrant determination of true lengths and true inclinations. Automatic generation of schematic diagrams of the dutch railway. Projection of lines in engineering graphics kprblog. Engineering graphicslines slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.

Line ab 75 mm long makes 45 o inclination with vp while its fv makes 55 o. Partial credit will be given on all problems in sections 2 5. Front views of the two end points of a straight line, when joined, give the front view of the straight line. New all drawings rechecked for accuracy and standards. If you continue browsing the site, you agree to the use of cookies on this website. Usually, a number of drawings are necessary to completely specify even a. New new 4 color signature of key drawing techniquesillustrations. Instruments are used to draw straight lines, circles, and. Sample midterm problems engineering graphics in design. Dec 29, 2015 may 17, 2020 engineering graphics complete notes, 1st semester edurev notes is made by best teachers of. Draw the horizontal projector through ab to cut the 45 degree line at m. Nm442 engineering drawing interpretation 2 learners resource package july 2004.

Engineering graphics projection of points and lines. On working drawings, capital letters are commonly made. All dimensions less than 1 should have a leading zero. Civil engineering drawing university of asia pacific. Objectives at the end of this section you should be able to. If line is in 1st quadrant draw its projections and find its inclination with hp. 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. Projection of lines free download as powerpoint presentation. Newman image processing editor use of the hough transformation to detect lines and curves in pictures richard o. Other parties may have an interest in design collaboration, procurement purchasing. As graphics are usually displayed on twodimensional media such as paper and computer monitors, these projections are widely used, especially in engineering drawing, drafting, and computer graphics. Pdf a textbook of engineering drawing a textbook of. A 3d projection or graphical projection maps points in threedimensions onto a twodimensional plane. In engineering drawing practice two principal planes are used to get the projection.

The midterm will be about 6575% graphics problems and 2535% short answer, multiple choice, truefalse, matching, andor definitions. 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. Basic types of lines used in engineering drawings by kelly curran glenn sokolowski. A straight line ab of 40 mm length has one of its ends a, at 10 mm from the hp and 15 mm from the vp. Engineering college alagarkovil, madurai 625301 i semester 04. Projection of straight lines in engineering graphics pdf in engineering drawing practice two principal planes are used to get the. Draw smooth, refined curves and straight lines in adobe illustrator. A straight line is the shortest distance between two points. Make visible lines dark and hidden dotted, as per the procedure. Projection lines do not touch the object and are drawn perpendicular to the element you are dimensioning. It is used as a boundary line of the drawing sheet and title block lines at the bo.

As graphics are usually displayed on twodimensional media such as paper and computer monitors, these projections are widely used, especially in engineering drawing, drafting, and computer graphics projections may be calculated mathematically or by various geometrical or optical techniques. Nov 05, 2010 engineering graphics lines slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. An engineering drawing is a technical not artistic drawing which. The concepts emphasized in class and studio will be the primary material covered, but all of the concepts from the text may also be tested.

Plain dividers are used to divide straight or curved lines into a prescribed number of equal parts, for transferring dimensions and for setting of distances from a scale to drawings. Engineering drawing distant production house university. Multiview projection notes edurev is made by best teachers of. The shortest distance between any two points is called a straight line. Hart stanford research institute, menlo park, california hough has proposed an interesting and computationally. An engineering drawing must ideally show the true shape of an object as well as all necessary sizes to allow it to be made and interpreted correctly. Projection of straight lines in engineering drawing pdf in engineering drawing practice two principal planes are used to get the. For courses in engineering graphicstechnical drawing and draftingtechnical sketching. Dimensions are always drawn using continuous thin lines. A tsquare is mainly used together with setsquares for drawing horizontal lines, angles and perpendicular lines. Projection of straight lines in engineering graphics pdf. Engineering drawing lettering and lines presentation 1.

The end a is 12 mm in front of the vp and 15 mm above. Support me pursue my passion of creating great quality videos on engineering. This placement of views is called thirdangle projection. Engineering graphics projections of a straight line. Basic types of lines used in engineering drawings wisc. This authoritative text dominates the market by offering the best coverage of basic graphics principles and an unmatched set of fully machineable working drawings. Unit 2 projection of lines engineering graphics lecture notes c. Projection of lines a straight line is the shortest distance between two points. Thus projection of a straight line is the foundation of engineering drawing. Engineering graphics projection of straight lines duration. The transparent plane on which the projections are drawn is known as plane of projection. This document is highly rated by students and has been viewed 225 times.

A straight line may have different orientations in space well be. Engineering graphics projection of points, projection of lines slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Draw a line 45 o inclined to xy from point a and cut tl 75 mm on it and name that point b 1 draw locus from point b 1 step 3. The straight line introduction straight line graphs arise in many engineering applications. The following are the types of lines used in engineering graphics.

E i i g hi engineering graphics ta c111 introduction y a line is the straight path bet een t o points a line is the straight path between two points th j ti f li i t th f t t d i ht id y the projection of a line into the front, top and right side planes is defined by the projection of its endpoints onto these planes these planes. The blade is fitted with ebony or a plastic piece to form the working edge of the tsquare. Engineering drawing fce 142 group members gichuru wainaina richard wageche merkle awuor joseph ngugi william wambulwa chris gichuki thomas mabelle samuel nyakundi sheldon muganda alex ndeke joseph mureithi samuel ngigi abdi adan geoffery mulosi standard engineering lettering and lines elements of engineering drawing engineering drawing are. The simplest position a straight line occupies in a space is, it is parallel to both v. Unit 0 not for examination importance of engineering graphics use of drawing instruments. May 17, 2020 engineering graphics complete notes, 1st semester edurev notes is made by best teachers of. Engineering graphics projections of a straight line projections of a straight line. Jan 01, 1975 for courses in engineering graphics technical drawing and draftingtechnical sketching.