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Engineering Drawing, 2nd Edition by B. C. Rana, M. B. Shah

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13

Sectional Views

OBJECTIVES

After reading this chapter, you will be able to

  • Draw sectional views—the views that are projected by imagining a machine part to have been cut and a part of it removed

  • Draw the half-sectional views—obtained when the cutting plane cuts halfway through the object so that half of the object appears in section whereas the other half is the external view—for symmetrical objects

  • Draw revolved sections, removed sections, partial sections and offset sections

13.1 INTRODUCTION

Machine parts have external as well as internal details. The internal features are not visible in an exterior view and if they are to be shown in the drawing they are required to be drawn by short dashed hidden lines. If there are many such ...

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