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1741dinesh

  • 3 years ago

hai, i am dinesh, will you please any body explain about why 2nd and 4th angle projection not used in mechanical engg. drawing

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  1. KaternRich
    • 3 years ago
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    BS8888 is the standard for engineering drawing, we work by those standards. only the people who wrote em will know. does it matter?

  2. arun_gaur
    • 3 years ago
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    bcz in 2nd and 4th projection we can't express the all views like isomatric view 3dview..............

  3. Nerd_Guy
    • 3 years ago
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    2nd and 4th are not used because , to get the side view we have to rotate the horizontal plane by 90degree in clockwise direction , but when it is rotated in 2nd and 4th quadrant , it overlaps on the vertical plane making it useless. that's why 2 and 4 are not used.

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