18 necessary views necessary views necessary views are

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Unformatted text preview: y used – Negative Coordinate system (Left Handed) • Classifications – Cartesian Three mutually perpendicular axes – Spherical – Cylindrical 14 2008/10/16 Orthographic views •  Any object can be viewed from six direc;ons. These six views may be drawn if necessary 15 Orthographic views •  These views are always arranged as shown which is the American National Standard Arrangement. The Top, front, and bottom views align vertically, while the rear, left- side, front and right-side views align horizontally. •  This is also known as third angle orthographic projections. 16 Guidelines for Construction of Views •  •  •  Width of Model appears in Top and Front Views. Height appears in Front and Side Views. Depth appears in Side and Top Views. 17 Guidelines for Selection a Front view •  •  •  •  •  Represents the...
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This document was uploaded on 01/21/2014.

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