Site Grading

Quickly create and modify TIN surfaces, gradings, and alignments for site design.


Create a graded surface on an existing topographic surface. Defining a graded area can be accomplished by selecting a previously drawn open or closed polyline as entity. Grading is used in site design and land development for terracing or land leveling to make parking lots, building pads, driveways, recreation reserves, and many more.

Grading 2
tin surfaces

TIN surfaces

A TIN surface is a 3D representation of a particular topographic surface. This continuous surface, consisting entirely of triangular facets, can be manipulated, edited and rendered to three-dimensional visualizations. The topographical surface can be generated based on drawing entities, data imported from a point file (CSV or TXT), points placed at different elevations, created from Civil 3D surface or imported from LandXML



You can update Corridors in real-time by dragging their 3D Alignment. Horizontal and vertical Alignments now support Endpoint, Midpoint and Nearest eSnaps. Horizontal Alignments also support Perpendicular eSnaps, too. Horizontal and 3D Alignments can calculate their intersections with other curves. The Properties Panel now displays Properties for Spiral-Curve-Spiral elements. Vertical Alignments support Endpoint, Midpoint, Perpendicular, Intersection and Nearest eSnaps. A new option lets you select a 3D Alignment when creating a Vertical Alignment view. In BricsCAD V21, Vertical Alignments now support parabolic curves.


Create corridors for road design

A corridor is a BricsCAD Civil drawing object used for modeling three-dimensional linear objects such as roads, railway, retaining walls, and bridges. It principally consists of a 3D alignment of the linear object and its cross-section (template and template elements).

Innovative Road Design Tools

Combine traditional cross section templates with string-based design to automate common design tasks.



Create intersections automatically based on user defined parameters. Curb returns can be edited individually to meet any horizontal or vertical design criteria.

round abouts


Quickly establish elevations around your selected island and edge of carriageway alignments to suit your intersection levels, as well as assigning cross sections to describe your internal island.

cul de sacs


Design and edit cul-de-sacs easily by entering the desired criteria.



Create Knuckles quickly by entering values into a form. You have full control over your design by editing alignments and profiles of any string.

autocreate roads and intersections

Autocreate roads and intersections

Auto Create Roads and Intersections from polylines and default design criteria.

modeless dialog

Modeless dialog boxes

Modeless dialog boxes let you see the profile, section, and model update in real time as you edit.

model viewer

Model viewer

Civil Site Design can open multiple windows showing vertical and cross section designs and these can be place across multiple monitors.

Compatible with industry standard data formats

Civil Site Design running on BricsCAD® is compatible with industry standard data formats. Not only will you be creating 100% compatible DWG files, but you can also open Civil 3D drawings and view the Civil 3D objects without installing an object enabler.