Dept of mechanical engineering and mechanics, drexel university good sectional view drawing practices different parts at different angles or patterns hatch spacing of about 11618 cutting plane line. The arrows at the ends of cuttingplane line point in the direction of sight for front section. Engineering drawing, orthographic projection, sectional view. A sectional view must show which portions of the object are solid. May 14, 2020 cutting planes are indicated on the drawing by a long chain line 0. The contents of this book have been prepared by consulting the. Later, when you are familiar with drawing auxiliary views, omit hidden lines when they do not add needed information to. The sectional view or plan must then be stated to be aa, or other letters appropriate to the cutting plane. To be aware of the basic conventions for sections and representing areas on sections outlined in bs iso 12840 and bs iso 12850. Key points using a sectional view can be very useful for parts that have complex interior geometry. Cutting planes are indicated on the drawing by a long chain line 0. Fundamentals of computer aided design sectional orthographic.
Later, when you are familiar with drawing auxiliary views, omit hidden lines when they do not add needed information to the drawing. Tl of line, point view of line, edge view of the plane and true size of plane. Existing and proposed site conditions manmade and landscape features should be drawn to scale. For a very large section view drawing, the long dashes are made very long to save drawing time. If the thing we are drawing is too complicated for this method. These drawings are easier to make than isometric drawings. N infinite number of such successive auxiliary views may be drawn. Sections are used to show interior details clearly. Sections are used to clarify the interior construction of a part that can not be clearly. Sectional views feel free to share this slide with your friends 2. An engineering detail drawing contains the key points to enable the manufacture or. In this case, we will look toward the left half of the object in the section view. An engineering drawing is a drawing or a set of drawings that communicates an idea, design, schematic, or model.
Indicates the material that has been cut through in a sectional view. Aligned elements in full and sectional views in full views, as well as in sectional views, certain violations of the rules of true projection are accepted as a good practice because they add to the clearness of the drawing. Sectional views feel free to share this slide with your friends. A drawing that displays technical information to the reader through specific visuals, directions, notes, etc a good technical drawing should be informative, clear, neat, unambiguous and not cluttered. A good technical drawing should be informative, clear, neat, unambiguous and not cluttered. As figures shown, the cutting plane is a frontal plane and appears as a line in the top view.
Sectional orthographic engineering drawing 2014 dec paper q2 duration. Orthographic drawing with question and stepwise solution. The mechanical engineering branch, mechanical systems division, has. Usually, a number of drawings are necessary to completely specify even a. Section lines section lines are used to define areas that represent where solid material has been cut in a sectional view. Engineering drawing pdf book free download agrimoon. These views assume that a cutting plane has removed portions of the object represented by the drawing, displaying the appropriate section of the interior. Engineering drawing important questions pdf file ed imp qusts please find the attached pdf file of engineering drawing questions pdf ed imp qusts link ed question bank uniti construct an ellipse. The topics covered include the multiview system of drawing, selection, and arrangement of orthographic views, auxiliary.
If the thing we are drawing is quite simple, we can mark the hidden parts by a hidden outline. The length of the long dashes varies according to the size of the drawing, and is approximately 20 to 40 mm. The following texts are the property of their respective authors and we thank them for giving us the opportunity to share for free to students, teachers and users of the web their texts will used only for illustrative educational and scientific purposes only. This crosssectional view section aa, figure 18, one that is orthogonal to the viewing direction. Kscgp435, volume i revision g, change 1 approved for public release distribution is unlimited v foreword the kennedy space center ksc engineering drawing practices, volume i of ii, aerospace and ground support equipment, is the official source for the requirements and interpretations to be used in the development and presentation of engineering. The cutting plane is lettered and the arrows indicate the direction of viewing.
Sectional view types full sections half sections offset sections broken sections revolved sections conventional breaks. Engineering graphics, class 9 sectional views mechanical. When the distance of the focus from the directrix is equal to 60 mm and eccentricity 23. From a primary auxiliary view 1 a secondary auxiliary view 2 can be drawn. The sectional view is applicable to objects like engine blocks, where the interior details are intricate and would be very difficult to understand through the use of hidden lines hidden lines are, by convention, dotted on an orthographic or isometric drawing. A section drawing, section or sectional drawing shows a view of a structure as though it had been sliced in half or cut along another imaginary plane. Electrical drawing is an important engineering subject taught to electricalelectronics engineering students both at degree and diploma level institutions. Detail drawings a short lecture on detail drawings as per the australian standard as1100 by paul briozzo. The engineering drawing, on the other hand, is not subtle, or abstract. Practice problems for engineering drawing i book pdf. Sketching section views uses new features examples characteristics uses floor plan.
An engineering drawing is a means of clearly and concisely communicating all of the. Usually, a number of drawings are necessary to completely specify even a simple component. It is called a sectional view, a cross section, or simply a section. It also contains dimensions, notes and specifications. Mechanical engineering drawing symbols pdf free download. We will transform the copied front view into the sectional view. A common use is to specify the geometry necessary for the construction of a component and is called a detail drawing. Sectional views reveal hidden details in a mechanical drawing.
The open space between the lines is approximately 1. Engineering drawing tutorials orthographic drawing solution. The drawing shows its name, wall bracket within the title block. A full section is a sectional view that shows an object as if it were cut completely apart from one end or side to the other. For practice, show all hidden lines, especially if the auxiliary view of the entire object is shown. Draw the removed and rotated section at a a and bb.
Size and shape distortion right angle becomes obtuse angle. The sectional view is applicable to objects like engine blocks, where the interior details are intricate and would be very difficult to understand through the use of hidden lines hidden lines are, by convention, dotted on an orthographic or isometric. Select the appropriate type of sectional view to show the hidden feature. A section view is created by passing an imaginary cutting plane vertically through the center of the part. Shape and angle distortion object looks more like what our eyes perceive. The course content generally covers assembly and working drawings of electrical machines and machine parts, drawing of electrical circuits, instruments and components. Jan 22, 2019 sectional views reveal hidden details in a mechanical drawing. Fundamentals of drafting orthographic projection with. You can use this form to make your own production drawings for class.
The blank engineering drawing form this blank template can be printed off the 2. The imaginary cutting plane is projected on a standard view so that the sectional view with orthographic representation is obtained as shown in fig. Copy view to be cross sectioned start the process by copying the front view third angle projection of the object. This section view more clearly shows the interior features of the part. Page 1 should be a vicinity map, page 2 should provide a topdown plan view, page 3 should show a cross sectional view. An engineering drawing is a type of technical drawing that is used to convey information about an object. This figure is a 3d representation of the part after it is sectioned. Engineering drawing indian institute of technology. Sections and sectional views engineering drawing joshua.
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 cut line is called a cutting plane, and can be done in several ways. 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. An engineering drawing often needs to show features that we cant see because they are inside the object. To produce a sectional view, a cutting plane is imagined cutting through the part, as shown in fig. Once this view has been created, you can dimension the interior details in the sectional view to complete the drawing. Aa cutting plane line projection direction name a a. Feel free to explore, study and enjoy paintings with. Section lines are evenly spaced at any inclined angle that is not parallel to any existing edge line and should be visually distinct from the continuous lines that define the boundary of the sectional view. Complete the front sectional view including missing lines and. A cuttingplane line shows where object was cut to obtain the section view. 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. Civil engineering drawing symbols and their meanings.
Section drawing designing buildings wiki share your construction industry knowledge. Identification of sections from engineering drawings. This will get you used to the look and feel of an engineering. The mechanical engineering branch, mechanical systems division, has been delegated. This is to avoid drawing in a foreshortened position. Engineering drawing important questions pdf file ed imp. Engineering drawing tutorials orthographic drawing. The following slides will help show the several methods or types of section views. Contents of the lecture shape description shape generation sectional views auxiliary views. View comparison pictorial drawing perspective drawing multiview drawing difficult to create easy to visualize. Electrical engineering drawing dr s k bhattacharya.
Picture the two halves of the object pulled apart, exposing the interior construction, as shown in fig. Jan 15, 2019 section drawing designing buildings wiki share your construction industry knowledge. Drawing basics section view looking in direction of arrows. The corners of the section view are numbered so that they can be compared with the orthographic.
Sacramento city college engineering design technology. Sectional views are used in technical drawing to expose internal surfaces. Ce 100 civil engineering drawing sessional lab manual. Cross hatching in the section view shows the solid surface of the object which were cut through to produce the section. Orthographic projections indian institute of technology. Each engineering field has its own type of engineering drawings. Pdf engineering drawing ii tutorial free download pdf. The result is called a front section, or front view in section, since it replaces the front view in the drawing. Circular hole becomes ellipse distorted width accurately presents objects details, i.
A sectional view or section looks inside an object. In figure below, auxiliary view 1 is a primary auxiliary view projected from the top view. Crosssectional views page 1 of 6 sectional views a cross. Chapter 7 sectional views college of engineering and. Technical drawing tutorial faculty of engineering and. Sectional views are used in engineering and architectural drawings. Engineering graphics is a set of rules and guidelines that help you create an engineering drawing.
It does not require an understanding of its creator, only an understanding of engineering drawings. To extend the principle of orthographic projection for sectional views. Fundamentals of drafting orthographic projection with sectional views objectives. If the thing we are drawing is too complicated for this method, instead of drawing hidden outlines we can make sectional views.
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