Section Callout

A Section Callout is the symbol that marks where a section is taken on one drawing and refers to where the section view is shown on another drawing — the conventional A / A pair, B / B, etc. Place it on a plan or elevation drawing at the location of the cut, with text identifying the section and the sheet where it's drawn.

Content

Text Top: The text shown in the upper half of the callout circle. Conventionally the section letter (A, B, C, ...).

Text Bottom: The text shown in the lower half. Conventionally the sheet number where the section is drawn (S-3, 12, etc.).

Text Size: Font size in real units.

Geometry

Diameter: Diameter of the callout circle in real units. Default 0.625" (a typical bridge-sheet section bubble size at 1"=10' scale).

Tail Type: Whether the callout's tail points one direction (Single) or two (Double — typical when a section line crosses a complex feature with cuts taken on both sides).

Opposite Direction: When true, the callout's arrow points opposite to its tail — useful when the cut direction is opposite to the natural reading direction of the bubble's text.

Style

Color / Thickness / Level: Standard styling.

Notes

A complete section callout pair consists of two bubbles connected by a line (the cut line, with arrows at each end indicating the view direction), or two separate bubbles at each end of a section line. Most projects standardize on one convention.

For sections taken at fixed alignment stations, place the callout on the plan at the station, label as <letter> over <sheet>, and add a Station Offset annotation nearby if the station number itself needs to be on the plan.