Drawing Section Lines

When sketching an object or part that requires a sectional view they are drawn by eye at an angle of approximately 45 degrees and are spaced about 1 8 apart.

Drawing section lines. The first step in creating a section is to draw a section line through the building model. Continue to specify points to define the section line if needed. Space section lines between 1 16 to 1 8 inch apart depending on the size of the drawing.

For average section linings space the section lines approximately 3 32 inch apart. By default the section line height as high as the model. To draw a section line and marks on the default tool palette set click the design tab and then click the vertical section tool.

A section drawing section or sectional drawing shows a view of a structure as though it had been sliced in half or cut along another imaginary plane. It is best to use the symbol for the material being shown as a section on a sketch. Specify the start point of the section line.

The section line defines the extents of the section to extract from the building model. Section lines are bidirectional and you can specify the length and depth of the section line either visually using the pointing device or by entering numeric values. If sectioned parts are adjacent to each other it is normal to cross hatch in different orientations and 45 or if the same orientation is used to use double lines or to stagger the lines.

Section lines within a sectioned area must be parallel. Uniformly space lines in section linings. Section lines are very light.

For buildings this can be useful as it gives a view through the spaces and surrounding structures typically across a vertical plane that can reveal the relationships between the different parts of the buildings that might not be apparent on plan drawings.