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Section Line

The section line is used to show a cutaway view of a floor plan. A section cutting all the way through a floor plan is referred to as a full section. The direction of the arrows shows the direction of the section view. The symbols on the end of the section line indicate the drawing number on top and the page number the section will be located on the bottom (Figure 3).

Figure 3. Section symbols and lines placed on a drawing

Dimension Line

The dimension line is used to show the measurement of an object. It can be used to indicate length, width, diameter, etc. The dimensions are listed in feet and inches on floor plans and elevations (Figure 4). Detail drawings of cabinetry or other custom pieces are dimensioned in inches.

Figure 4. Use of dimension line

MATERIAL SYMBOLS

Material symbols represent the construction materials cut in section. Below is a list of materials and their symbols used on architectural drawings (Figures 5 & 6).

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