Arch C

18 x 24 in CMYK 3:4 portrait

An 18 by 24 in Arch C drawing sheet. The practical presentation size for architectural plans, sections, and full floor plans of small projects.

about the size of a small movie poster

About this size

Arch C is the size where architectural drawings become real presentation pieces. Large enough to show a full floor plan of a small residential project at readable scale, small enough to pin to a presentation board without dominating it, and the size most academic architecture portfolios use as their working unit.

The practical pipeline runs through plotters and pin-up presentations. Standard office printers cannot handle 18 by 24 stock, and Arch C sheets are usually presented mounted on board rather than handed around as documents.

Architecture plans
Presentation boards
Blueprints

Pro tips

1 A practical presentation size. Large enough for full floor plans of small projects at readable scale.
2 Common in academic architecture portfolios. The standard working unit for student presentation work.
3 Plotter output and pin-up presentation are the default workflow. The size assumes board mounting rather than handheld review.