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Views And Techniques

This section explores drawing classifications, orthographic projections - orthographic, planometric, oblique, isometric, and perspective drawings. Understand the symbols, views, and techniques of different drawing types like pictorial, planometric, oblique, isometric, exploded isometric, and perspective drawings. Learn the essentials of interpreting assembly drawings for exams.

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Views And Techniques

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  1. Views And Techniques Interpreting Drawings is one section of theory which will be tested in your final exams. The slides contain the following information. Drawing classifications Identifying marks/properties of drawings Orthographic Planometric Oblique Isometric Perspective Assembly Instructions

  2. Views And Techniques Orthographic Drawings Orthographic Drawings only show one face. Most common orthographic projection system is third angle projection. Third angle projection symbol The third angle projection symbol shows the layout of the views in relationship to one another Object is drawn in 4, 2D views: Elevation Plan End Elevation (x2)

  3. Views And Techniques Pictorial Drawings Any Drawing which shows three dimensions is classified as a Pictorial Drawing, the following drawings are all pictorial drawings. Planometric Oblique Isometric 1pt Perspective 2pt Perspective

  4. Views And Techniques Planometric Base is a true plan rotated at an angle of 300, 450 or 600. All vertical edges remain vertical. All measurements on base are true. Heights are full size. Tips: Always start by drawing the full Plan

  5. Views And Techniques Oblique Front of the object is shown as its TRUE FACE. Breadths are projected back at 450 All breadths are cut to HALF SIZE. Obliques are used quite often when there are circles on the front face because they can be drawn using a compass.

  6. Views And Techniques Isometric Heights are projected vertically upwards. Lengths and breadths are projected at 300 All measurements along the height, length and breadth are full size.

  7. Views And Techniques Exploded Isometric Designers use ‘exploded’ views, often drawn in isometric projection, to show parts of products that are hidden from sight. For example, all the parts of the object, drawn above, can be seen because it has been taken apart using the drawing technique called 'Exploded Isometric Projection'.

  8. Views And Techniques 1pt Perspective There is one vanishing point. Perspective drawings are sketched, although a straight edge is used. There is no accurate measuring in perspective drawing. The drawing starts from a face rather than an edge.

  9. Views And Techniques 2pt Perspective There are two vanishing points Perspective drawings are sketched, although a straight edge is used. There is no accurate measuring in perspective drawing A leading edge is used to start the drawing. Tips: Build up the drawing using rectangles Use a cross to find the centre

  10. Views And Techniques Assembly Drawing In an exam you will be asked to identify certain parts, part numbers or names. All of the information required will be in front of you. You must be able to read the drawing in order to answer the questions.

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