GCULVERT Cast in place box culvert design

An add-on for AutoCAD or BricsCAD, for 3D design of cast in place box culvert.
The culvert consists of one or more rectangular frame pieces, 2 wings or a wing and a fall chamber. The walls of a wing can have different sizes and angles. The sole of the wing can be horizontal or inclined.
All parts are parameterized, the user entering or modifying the input data, explained by adjacent images.
Output data: drawings containing 3D view, plan view, longitudinal section and cross sections of the culvert and a table with the volumes, materials and lateral area of the parts. Now it can also generate pipe culverts (see https://rumble.com/v3u39vj-pipe-culvert-design-in-autocad.html)
https://rcad.eu/gculvert