ANSI D
North American (ANSI & Arch) · 6 specs
Direct Answer
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.
Source: ANSI/ASME Y14.1 · Last reviewed Aug 28, 2026
Specs
| Width × Height (Imperial) | 22.00 × 34.00 in |
| Width × Height (Metric) | 558.8 × 863.6 mm |
| ANSI Hierarchy | ANSI D = 2 × ANSI C = 4 × ANSI B = 8 × ANSI A |
| Aspect Ratio | 1 : 1.5455 (11 : 17 — identical to ANSI B) |
| International ISO Equivalent | A1 (594 × 841 mm) |
| Primary Applications | Civil engineering utility plans, automotive chassis CAD plots, aerospace mechanical schematics |
The Engineering Blueprint Benchmark
ANSI D is the most widely plotted drawing format across US mechanical engineering firms and municipal public works departments, providing expansive drafting space for title blocks, bill of materials (BOM) tables, and revision histories.