From curves to contours — without leaving Rhino.
DOCOgrade is a surface grading plugin for Rhinoceros 3D that brings a structured, curve-driven grading workflow to your Rhino models.
Draw your grade curves, generate a triangulated grading surface, and let DOCOgrade keep your contours, spot grades, and cut & fill volumes in sync as your design evolves. Turn that surface data into clear, print-ready grading documentation — all without leaving Rhino.
Key Features
Graded Curve Generation
Draw grade curves directly in your model to define falls across a site, particularly useful for DDA access and accessible design.
Dynamic Surface Annotations
Add contour elevation labels, spot grades, and point-to-point grades that update automatically as your surface design changes.
Automatic Surface Generation
Generate a topographic mesh (TIN) directly from your design curve network, combining the reliability of triangulated surfaces with the familiarity of Rhino geometry.
Automated Contour Generation
Generate contours in both 2D and 3D, with optional elevation labels kept in sync with the surface.
Cut & Fill Analysis
Quickly determine cut and fill volumes to sense-check your design as it develops.
Measuring Tools
Measure grades and elevations of objects relative to a surface, or between two points.
Analytical Display Modes
Instantly review surface grades for planting, drainage, and accessibility considerations.
Customisable Layers & Styles
Map layers and annotation styles to a template file, keeping naming and styling consistent across projects.
Surface grading, without leaving Rhino
DOCOgrade brings a structured, curve-driven grading workflow to your Rhino models. Grade curves, surfaces, contours, and annotations remain linked and update together, allowing your design data to flow naturally from curve → surface → contour → grade → analysis.
Get the accuracy and rigour of a dedicated civil grading workflow while continuing to design in the Rhino environment you already know.
We welcome your feedback and suggestions.