12d

12d is a software suite used in civil engineering for design, surveying, and project documentation. The core component, 12d Model, provides 3D terrain modelling, corridor design, earthworks, drainage and alignment tools, as well as quantity estimation and reporting. The suite generally includes data management and collaboration capabilities to support large infrastructure projects and integrate with field surveying workflows.

Originating with an Australian software company, 12d Solutions Pty Ltd, the 12d package has been adopted by governments, engineering consultancies, and construction firms for road, rail, water, and land development projects around the world. It emphasizes interoperability with common CAD and GIS formats and can generate project deliverables such as plans, profiles, cross-sections, and summaries.

Usage and scope: 12d is employed in various stages of civil projects, including initial survey data processing, conceptual and detailed design, earthworks estimation, drainage and utility planning, and production of construction documentation. The software is typically distributed under commercial licenses and supported through vendor and partner training, technical support, and professional services.