Here we discuss the important types of projections, including their advantages and disadvantages. Compass and Divider Fig. • Isometric drawing is important to engineering designers as the drawing shows clearly what that has been designed • It is also useful for equipment designers as they can easily interpret the method of construction of an object or equipment. A3: Theory of projection is the base for the background information necessary to shape representation in graphics. Checked:- before manufacture, drawings are usually checked. Version:- many drawings are amended, each revision must be noted. Locate the corners of the inclined surface and then draw lines to connect the corners • Notice that edges that are parallel in the orthographic views will also be parallel in the isometric drawing . Lesson 1 Manual drafting tools for Engineering Drawing 4-13 Lesson 2 Types of scales 14-17 Lesson 3 Line and lettering 18-37 Module 2 Projections Lesson 4 Dimensioning technique 38-49 Lesson 5 Orthographic projections 50-82 Module 3 Sectional views Lesson 6 Sectional view 83-105 Lesson 7 Types of projections … Read also: Dimensions and Types of Dimensioning Systems Graphical projection has an important role in machine drawing and design. But the projection of these edges, i.e., a’b’, a’d’ & a’a1′ are at an angle of 120º to each other and also they are foreshortened to the same length. Various types of projection can be used to understand a 3-D structure. Draw cavalier and cabinet oblique drawings. The front view of the cube, therefore, represents its isometric projection. Step 2 Projection:- the projection … A compressed handbook designed for the students of engineering disciplines for learning the basics of engineering drawing. Muhammad Umair Akram 9/1/2015 MUHAMMAD UMAIR AKRAM 1 Types of Projections Engineering Drawings “It is actually the language of lines that is used to convey the concept of design of anything from designer’s mind to the manufacturer or the reader”. Q3: What are the two fundamental methods of shape representation used in engineering drawing? List the advantage of oblique projection. Isometric drawing – step 2 • Step 2 – The angle of the inclined surface cannot be transferred directly. engineering drawing practice for schools 81 colleges bureau ofindianstandards manak bhavan, 9 bahadur shah zafar marg new delhi 110002 . 1.10 French Curves .2 Drawing Standards drawings from given orthographic projections of an object. Company name:- name of the company. Scale:- the scale of the drawing. Notes:- any note relevant to the drawing. In technical Engineering drawings, each line has a definite meaning and is drawn in accordance to the line conventions as illustrated in the figure below. Know how to place circle when creating an oblique drawing. Selection of machine components … Visible Line Hidden Line Cutting-Plane Lines … Types of projections 1. Two widths of lines are typically used on drawings; the thick line width should be 0.6 mm and the thin line width should be 0.3 mm. Date:- the date the drawing was produced or last amended. Various Types of Pictorial Drawings Oblique Projection After reviewing this material, students will know how to do the following: Describe how an oblique projection is created. 11 2 Projections Used in Engineering Graphics Sections •2.1Projections •2.23-D Projections •2.3Multiview Projections •2.4Working Drawings • Key Terms Objectives • Understand the spatial relation between 3-D projections and multiview projections • Be able to differentiate isometric, trimetric, perspective, and oblique 3-D projections • Understand how multiview projections … Contents: reprographics, engineering drawing, sketching, pictorial projections, paper sizes, scales, conventions in layout, lettering and representation of components, tolerances, assembly drawings, K-parts list, exercises in machine drawings, structural drawings and design. : - any note relevant to the drawing was produced or last amended shah zafar marg new delhi 110002:! 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