New tools are available for working with raster surfaces that are referenced to vertical and inclined planes through the Engineering Analysis Module (EAM). The vertical and inclined plane surfaces can be used in volume calculations and can be contoured creating true 3D lines that can easily be exchanged with other third-party applications.
The addition of these tools allows for more complex workflows to be applied in deformation analysis of quay walls and other important infrastructure in ports and waterways.
Existing proven raster surface tools can now be applied even in these cases, provided that a suitable raster surface can be created. EAM allows using vertical or sloped surfaces as coordinate referencing systems to create these raster surfaces. Then existing tools, such as differencing raster surfaces and viewing the profiles at regular intervals, can be used to perform analysis on this data. This results in increased efficiency, and means that divers may only needed to perform targeted inspections where deformations have already been identified.
All of these calculations work with 3D models or at a fixed depth, with an optional allowance below the model.
Decision-making is made easy with a number of views for comparing the data to the model:
Areas where bathymetry is above the model are marked, with additional areas created at every user-specified step above the model. These areas are covered by minimum bounding boxes, which can be automatically and manually merged to ensure the number of publications meets your needs. The more shoals at different depths are published, the more of the channel is available to shallow-draft vessels; the fewer shoals are published, the easier it is to manage the publications.
In the above images, the shoal areas are shown as red lines, and the minimum bounding boxes are shown by black dashed lines.
Additional metadata, such as the clearances between the shoals and the sides of the model, is calculated automatically when shoals are detected. Other metadata, such as the nearest reference feature, can be determined on request. The end result is a configurable shoal publication, with automated tools and manual overrides available at every step along the way.
A typical 3D model includes horizontal areas bounded by side slopes at a given gradient. These can be defined based on an alignment with linear referencing (stationing), with the referencing based on straight and/or curved segments. Profile lines can then be automatically generated at fixed distances along the alignment.
Models can also be created from existing vector background maps, including S-57 ENC, CARIS, Shapefiles and many other formats.