Powerpoint first angle projection
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The document discusses first angle projection as a method of orthographic projection. First angle projection represents a 3D object with 2D drawings, including a front elevation, side elevations, and plan view. It aims to provide a precise detailed drawing of an object using these 2D orthographic views. Key rules for first angle projection include showing the front view with the most detail and placing the end view on the right or left side depending on the viewing perspective.
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The document discusses different types of technical drawings used in civil engineering. It describes third angle and first angle projections, which differ in how top, front and side views of an object are arranged relative to each other on a page. It also covers conventions for indicating hidden lines, center lines, and the order drawings should be made. Dimensioning techniques like transferring measurements between views are explained. The document concludes by briefly discussing freehand sketching and physical modeling.
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Download link: https://www.researchgate.net/publication/318852873_Engineering_Drawing_-_I
DOI: 10.13140/RG.2.2.22512.56328
An engineering drawing is a type of technical drawing, used to fully and clearly define requirements for engineered items, and is usually created in accordance with standardized conventions for layout, nomenclature, interpretation, appearance size, etc.
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Download the original presentation for animation and clear understanding. This Presentation describes the concepts of Engineering Drawing of VTU Syllabus. However same can also be used for learning drawing concepts. Please write to me for suggestions and criticisms here: hareeshang@gmail.com or visit this website for more details: www.hareeshang.wikifoundry.com.
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THIS SLIDE CONTAINS WHOLE SYLLABUS OF ENGINEERING DRAWING/GRAPHICS. IT IS THE MOST SIMPLE AND INTERACTIVE WAY TO LEARN ENGINEERING DRAWING.SYLLABUS IS RELATED TO rajiv gandhi proudyogiki vishwavidyalaya / rajiv gandhi TECHNICAL UNIVERSITY ,BHOPAL.
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The document discusses different types of pictorial drawings used in technical drafting. It begins by stating the objectives of the lesson which are to define pictorial drawing, identify the three main types, and appreciate their importance. The three main types are then described in detail: isometric drawings show three dimensions at full scale using 30 degree angles, oblique projections preserve sizes of parallel faces but distort others, and perspective drawings provide a view similar to human vision using one, two, or three vanishing points. Pictorial drawings are important for communication between designers and producers as well as providing accurate visualizations of projects.
Class 9 presentation
This document provides an overview and instructions for a 2D essentials class. It includes reminders about upcoming project deadlines, extra credit opportunities, and questions from prior chapters. It discusses concepts like runouts, plotting curves by hand, and isometric drawing. Students are instructed to break into groups to answer questions, sketch examples, and draw isometric shapes like cubes and boxes. The instructor emphasizes key pictorial drawing techniques including orthographic, oblique, perspective, and axonometric projections.
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In this presentation definition of engineering, common systems of projection, principal views and some multi-view drawing practices are discussed
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This document provides an overview of a 2D Essentials class being taught from January 18th to May 16th. It covers topics like isometric drawings, axonometric projections, drawing curves and holes in isometric views, and section views. Reminders are provided about upcoming project deadlines. Examples are given for techniques like drawing oblique surfaces, angles, cylinders, and screw threads in isometric. Students will complete group projects applying these techniques and visualizing exercises are linked to reinforce learning. The next class will finish the chapter on section views and address any remaining questions. Homework includes exercises from chapters 3 and 7.
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The document discusses engineering drawing skills like lettering, line types, orthographic views, and dimensioning. It covers topics such as visible versus hidden lines, center lines, construction lines, first angle and third angle orthographic projections, and techniques for dimensioning objects. Examples are provided of orthographic views showing front, top, and side views and the use of construction lines to develop views.
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it gives you the some usefull information of drawing of isometric projection and also about orthographic projection
Lecture 14
This document introduces different types of projections used in engineering, including orthographic, isometric, oblique, and perspective projections. It focuses on orthographic projection, discussing planes of reference, first and third angle projections, and how to create orthographic views. Key points covered include that orthographic projection involves projectors perpendicular to the plane of projection, and that first angle projection positions the object in front of the planes while third angle projection positions the planes between the observer and object.
Technical drawing I
This document discusses engineering drawings and orthographic projections. It explains that engineering drawings specify the precise size and shape of parts through dimensions and tolerances, rather than illustrating objects. Orthographic projections show objects from multiple views, like the front, side, and top, to accurately depict the object's geometry. These views are drawn looking straight on to each face of the object so dimensions are not distorted, unlike perspective projections. The document provides an example of an L-shape depicted through an orthographic first angle projection, with views from the front, side, and top.
theory of projection
This document discusses different types of projections used in engineering graphics to represent 3D objects in 2D. It describes projection as mapping a 3D space onto a 2D plane. There are two main types of projections: parallel projections and perspective projections. Parallel projections preserve relationships between features, while perspective projections provide a view similar to human vision but can distort sizes and shapes. Common parallel projections discussed are multi-view, oblique, and axonometric projections, while perspective projections are classified as one-point, two-point, or three-point based on the viewpoint.
Pp chapter 5
This document discusses technical sketching and multiview projections. It begins by explaining the basic principles behind projections, including the relationship between an object, observer, projection plane, and projectors. It then covers different types of projections like perspective, parallel, and orthographic. The document also discusses how to create multiview projections using a "glass box" method, which involves projecting views of an object onto planes that form a box. It explains how to unfold these planes onto a flat surface and align the views. Guidelines are provided for technical sketching techniques and conventions like hidden lines.
Orthographic-Projection.pdf
On this pdf we are able to solve any graphics subjects related questions and this is very important to a engineering student
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1. The dihedral system which uses orthogonal projections on perpendicular planes to represent an object from different views (front, overhead, side).
2. Perspective representations, including isometric perspective which draws the X, Y, Z axes at 120 degree angles, and one-point perspective.
3. Scales and dimensions, with scales showing the proportion between a real object and its drawing at different sizes (full scale, reduced scale, enlarged scale). Dimension rules specify how to annotate actual object measurements.
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This document provides an overview of engineering drawing concepts and introduces the AutoCAD software. It describes the objectives, equipment, and types of lines used in engineering drawings. It also explains different drawing scales, dimensioning techniques, projection methods including orthographic and isometric projections. The document introduces key AutoCAD interface elements and provides step-by-step instructions for common drawing, editing, and plotting commands in AutoCAD.
CAD Exp 1 (1).pdf
This document provides an overview of engineering drawing concepts and introduces the AutoCAD software. It describes the objectives, equipment, and types of lines used in engineering drawings. It also explains different drawing scales, dimensioning techniques, projection methods including orthographic and isometric projections. The document introduces key AutoCAD interface elements and demonstrates how to create basic shapes and perform common editing commands. It provides step-by-step instructions for printing or plotting completed drawings.
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Powerpoint first angle projection
- 1. By Mr. Curtis Marcelle and Mrs. Kya Morris ORTHOGRAPHIC PROJECTION – FIRST ANGLE
- 2. • Develop an overall understanding of First Angle Projection • Define the term “first angle projection” as it relates to orthographic projection • Identify the rules for drawing in first angle projection • Recognize any “first angle projection” in Technical Drawing • Draw orthographic projections of geometric solids and models using first angle projection • Convert 3D/pictorial drawings into 2D/orthographic projection drawings • Value the use of First Angle Projection OBJECTIVES
- 3. • The collection of two-dimensional drawings that gives an accurate overall representation of a particular object. • There are basically two types of orthographic projection • These are: First angle projection and Third angle projection WHAT IS AN ORTHOGRAPHIC PROJECTION
- 4. • A method of projection in which a three-dimensional object is represented by two-dimensional drawings. FIRST ANGLE PROJECTION
- 5. • The purpose of first angle projection is to give a more precise detailed drawing of the particular object or geometrical part using two-dimensional drawings. PURPOSE OF FIRST ANGLE PROJECTION
- 6. • We mainly represent three/four parts of an object in first angle projection. • These are the Front elevation, Side elevation (left/right) and Plan (top view). PARTS OF A FIRST ANGLE PROJECTION
- 7. When using first angle projection, we use the symbol:
- 8. Process…
- 10. •The ‘front elevation’ (or front view) is the view with the most information of the object. •The ‘plan’ is always below the front elevation (first angle projection). •The ‘end view’ is placed on the right if viewed from the left side of the object and on the left if viewed from the right side of the object. POINTS TO REMEMBER
- 11. •There are two types of orthographic projections: First and Third angle. •First angle projection is a method of projection in which a three-dimensional object is represented by two-dimensional drawings. •It gives a more precise detailed drawing of the particular object or geometrical part (purpose). •Front elevation, Side elevation (left/right), and Plan (top view). CONCLUSION
- 12. Lets give it a try…