Three views are not always necessary we need only as many views as are required to describe the object fully.įor example, some objects need only two views, while others need four. Which views should one choose for a multiview drawing The views that reveal every detail about the object. Then draw the object on each of three faces as seen from that direction. Orthographic or Multiview Drawing Imagine that you have an object suspended by transparent threads inside a glass box, as in figure 3.

However, if the object in figure 2 had a hole on the back side, it would not be visible using a single isometric drawing. Technical Graphics Level 3 may lead to further studies at tertiary level, with courses such as Bachelor of Engineering, Environmental. The clutter-free layout, along with the artwork and photos which accompany the technical graphics, will immediately appeal to students. One can pack a great deal of information into an isometric drawing. Technical Graphics provides a strong basis for further vocational and/or tertiary study in areas such as: engineering architecture industrial design and related areas in design, manufacturing and construction. Refreshing in its use of colour, examples and approach to topics, Understanding Technical Graphics carefully balances text and graphics. If the isometric drawing can show all details and all dimensions on one drawing, it is ideal. Lines that are not parallel to these axes will not be of their true length.Īny engineering drawing should show everything: a complete understanding of the object should be possible from the drawing. When drawn under these guidelines, the lines parallel to these three axes are at their true (scale) lengths. In an isometric drawing, the objects vertical lines are drawn vertically, and the horizontal lines in the width and depth planes are shown at 30 degrees to the horizontal. This is one of a family of three-dimensional views called pictorial drawings. Isometric Drawing The representation of the object in figure 2 is called an isometric drawing. SCQF: level 7 (12 SCQF credit points) Unit code: H7W3 77. We hope you like the object in Figure 1, because youll be seeing a lot of it.īefore we get started on any technical drawings, lets get a good look at this strange block from several angles. Technical Graphics (Advanced Higher) Unit. Dont worry about understanding every detail right now - just get a general feel for the language of graphics.

Understanding technical graphics pdf