Modeling a Seawall From a Map Selection: Geometry, Elevation, and the Water You Can't See
I wanted a 3D model of the Galveston seawall for a small experiment: not a survey-grade deliverable, just something I could rotate and measure while reading about the structure. I picked a one-mile segment near the east end and used GenAnywhere to select the wall, the beach in front of it, and two blocks of streets behind it. A minute later I had a rough model. It was useful, and it was wrong in…
I created a 3D model of the Galveston seawall to better understand its structure and characteristics. I selected a one-mile segment near the east end, including the beach and two blocks of streets behind it. While the initial model was useful for orientation, it had limitations such as being a flat ribbon and missing important details like curves, construction joints, and bathymetry.
To create a more accurate representation, I had to model the wall's actual profile, attributes, and water levels separately. By attaching metadata to the mesh, I made the model usable and enabled queries based on specific criteria like beach width and crest elevation. Adding water as a scenario helped visualize the relationship between wall height, surge height, and ground elevation behind the wall.
For future models, I would start from LiDAR and surveyed cross-sections, use separate layers for terrain and assets, and version assumptions to better understand the limitations and complexities of seawall modeling.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
