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Section symbols are used to indicate where sections are cut. The section mark consists of a 1/2" diameter circle, an arrow that indicates the view direction of sight which is filled solid black, and two numbers (Figure 11). The upper number tells the section number on the sheet and the lower number indicates the sheet number where the section is drawn. Generally a section call-out is composed of two same section marks, one on each end of the cutting plane line, (Figure 12).

2 A-5

2

2

A-5

A-5

Figure 12. Simplified section symbol on one end

Figure11 Section symbol

2

Section number

A-5

Sheet reference

Figure 13. Section symbols used on the plan view

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