Engineering Graphics: Unit III (b): Projections of Solids
Technical Terms used in Solids
Engineering Graphics (EG)
1. Face: The regular plane surface which form the surface of a solid.
TECHNICAL TERMS USED IN SOLIDS 1. Face: The regular plane surface which form the surface of a solid. 2. Edge: The line along which two plane faces (or) surfaces meet. 3. Top base: Upper plane surface of a solid. 4. Bottom base: Lower plane surface of a solid. 5. Axis of prism: An imaginary line joining the centres of top base and bottom base. 6. Axis of pyramid : An imaginary line joining the apex and centre of bottom base. 7. Regular solid: A solid in which axis is perpendicular to its base. 8. Oblique solid: A solid in which axis is inclined to its base. (Fig. 14.5) 9. Apex of a pyramid : The point at which all equal isosceles triangular faces meet. 10. Slant Edge: The line joining the apex and the corner of the base. 11. Generator: Straight line drawn from the apex to the circumference of the base circle of a cone. The length of generator is the slant height of the cone. 12. Frustum : When a solid is cut by a section plane parallel to its base and on removing the upper portion of the solid, the remaining portion is called the frustum of solid. (Fig. 14.6). 13. Truncated solid: When a solid is cut by a section plane inclined to its base, and on removing the upper portion of the solid, the remaining portion is called the truncated solid. (Fig. 14.7). Note: 1. Only the projections of Right Regular solids (ie., solid with axis perpendicular to the base and all bounding faces are similar shape and size) are presented in this chapter. Hence a solid in any problem is to be understood as right regular solid. 2. Also, only the projections of full solids (Not Frustum (or) truncated) are dealt in this chapter.
Engineering Graphics: Unit III (b): Projections of Solids : Tag: : Engineering Graphics (EG) - Technical Terms used in Solids
Engineering Graphics: Unit III (b): Projections of Solids
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Engineering Graphics
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