Which lines on floor plans indicate where a section cut is taken?

• A. Match lines
• B. Leader lines
• C. Dimension lines
• D. Section lines

Answer: (D)

Section lines indicate the exact path where a plan is cut to create a sectional view. On floor plans, this line marks where the interior is sliced, so engineers and builders can see construction details, heights, and relationships that aren’t visible in the flat plan. It’s usually drawn with arrowheads at the ends and labeled (for example, Section A-A) to identify the cut. The other lines have different roles: match lines show where sheets connect or continue, leader lines point to notes, and dimension lines show measurements.