Side-by-Side Comparison
North American (ANSI & Arch)
ANSI D vs. Arch D
Comparing 2 standards across 9 specifications. 9 key differences identified.
Comparing:
ANSI D
Arch D
ANSI D is an engineering drawing paper standard defined by ANSI/ASME Y14.1, measuring 22.0 × 34.0 inches (558.8 × 863.6 mm). Formed by doubling ANSI C, it is the classic North American engineering blueprint format for civil engineering site plans, automotive chassis designs, and aerospace sub-assemblies.
Arch D (Architectural D) is the dominant commercial architectural drawing paper format in the United States, measuring exactly 24.0 × 36.0 inches (609.6 × 914.4 mm). Operating on a clean 2:3 aspect ratio, it is the mandated standard for US building permit architectural blueprints, construction site floor plans, and residential elevations.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
Width × Height (Imperial)
|
22.00 × 34.00 in | 24.00 × 36.00 in |
|
Width × Height (Metric)
|
558.8 × 863.6 mm | 609.6 × 914.4 mm |
|
Aspect Ratio
|
1 : 1.5455 (11 : 17 — identical to ANSI B) | 2 : 3 (1 : 1.5000 — whole integer aspect ratio) |
|
Primary Applications
|
Civil engineering utility plans, automotive chassis CAD plots, aerospace mechanical schematics | US building permit sets, architectural floor plans, structural framing blueprints, MEP schematics |
|
ANSI Hierarchy
|
ANSI D = 2 × ANSI C = 4 × ANSI B = 8 × ANSI A | — |
|
International ISO Equivalent
|
A1 (594 × 841 mm) | — |
|
Arch Series Hierarchy
|
— | Arch D = 2 × Arch C (18×24 in) = 4 × Arch B (12×18 in) = 8 × Arch A (9×12 in) |
|
Comparison to Engineering ANSI D
|
— | Arch D (24×36 in) is 2 inches wider and 2 inches longer than ANSI D (22×34 in) |
|
Plotter Roll Standard
|
— | Standard 24-inch and 36-inch wide wide-format bond rolls |