Digital Terrain Model (DTM) Software

Central system component for all other BBSoft® modules: manages project administration, structures the data foundation, and controls interfaces as well as system logic.

• Import survey data and process it immediately
• Automatically generate point and staking-out lists
• Central symbol management – find quickly instead of searching
• Clear layer structure for maximum project clarity
• Create as-built plans with just a few clicks
• Easily import Shape data and use it directly
• Flexibly adjust drawings – intuitively control scale, line types, and labeling
• Automatically transform survey points and convert them correctly
• Direct conversion and mapping of 2D and 3D survey points
• Automatically detect and calculate areas
• Output coordinate lists at the push of a button
• Import terrain data directly from the field book
• Conveniently filter, edit, and check survey points

3D terrain models are created from survey points, breaklines, and laser scan data – for applications such as landfills, retention basins, excavation pits, stockpiles, and reservoirs. Multiple digital terrain models can be managed within a single drawing, with data exchange via LandXML and DA58, including plausibility checks and subsequent editing.

• 3D terrain models are created from survey points, points with breaklines, or laser scan data
• Landfills, retention basins, stockpiles, reservoirs, and excavation pits can be planned as digital terrain models
• Breaklines are integrated into the digital terrain model – for example, contour lines without points
• Multiple 3D models can be created within a single drawing or in the BBCivil database
• Digital terrain models can be transferred from other projects – enabling database-based data exchange
• Data exchange is supported via REB, LandXML, and DA58/45/30/49 formats
• Points can be inserted into or removed from the digital terrain model at any time
• Digital terrain models can be intersected
• Plausibility checks are performed for generated digital terrain models – including holes and shifted or overlapping surfaces
• Plausibility checks are also performed for breaklines (e.g. duplicate support points)
• Digital terrain models can be isolated inside or outside a boundary line
• Intersection lines between digital terrain models and 3D solids can be generated

Slopes and berms are calculated and designed – BBSoft® connects terrain levels with configurable slope inclinations and structures steep gradients using berms. The calculation of slope angles, slope edges, and slope volumes, as well as slope design, is fully integrated into the digital terrain model module.

• Slopes are calculated – including slope angles and direction (upward, downward, automatic)
• Berms are calculated – stepped slopes with horizontal sections
• Slope edges can be adjusted – start edges can be modified and updated at any time
• Slope volumes are calculated – 3D surfaces of calculated slopes are generated and displayed
• Slope design is supported – base edges are created as 2D/3D polylines or lines with elevation
• Slope hatching includes color-coded highlighting of cut and fill areas
• Slopes can be created on inclined planes – also without a boundary line with elevation
• Profiles of slopes and berms are generated and drawn in CAD
• Plausibility checks are performed for the terrain model of the slope
• Slopes can be generated on top edges of 3D solids
• Slope settings can be exported and transferred to other slopes
• Retention basins can be planned using the slope module

Quantity survey for excavation pits, earthworks, and terrain modeling – BBSoft® calculates volumes using the prism method in accordance with REB and determines cut and fill quantities based on surfaces. The results are transferred directly into the construction billing.

Construction Billing

• Quantity survey for excavation pits – volume calculation using the prism method in accordance with REB
• Quantity survey based on contour lines – derived from elevation layers and digital terrain model comparison
• Cut and fill surfaces are displayed using hatching or +/- symbols
• Topsoil layers can be considered optionally
• Mass balancing is performed for specified target quantities
• Cost calculation is supported in €, CHF, or a user-defined currency
• Prism lists and prism numbers are documented in CAD

Quantity survey in civil engineering with BBSoft® – volume calculation between two digital terrain models using the prism method in accordance with REB. Cut and fill quantities are determined based on surfaces, and unit prices per cubic meter enable direct cost calculation in €, CHF, or a user-defined currency.

Interfaces and Data Exchange Formats

• The volume between two 3D digital terrain models (existing vs. design) is calculated
• Cut and fill surfaces are displayed using surface hatching or +/- symbols
• Mass balancing is performed if specified quantities are not met
• The comparison plane can be adjusted to align cut and fill surfaces
• Prism lists and prism numbers are output in CAD
• Irregular excavation pits, quarries, and water bodies are calculated
• Fast and verifiable quantity survey across thousands of surfaces
• 3D solids are generated for cut and fill volumes
• Applications in hydraulic engineering: riverbanks, water depths, and sediment volumes
• Legends and statistics are generated with various display options
• Water level analysis supports the design of hydraulic structures
• Elevation difference layers are generated to display all depth levels
• Construction work items are assigned to objects and calculations

Borehole profiles are created and soil layers are visualized graphically – BBSoft® enables standards-compliant visualization of layer registers from core drillings and trial pits. Borehole profiles are generated in accordance with German, Austrian, and Swiss standards and displayed directly in the location plan.

• Borehole profiles are created – with graphical visualization of soil layers and samples
• Layer registers are displayed in the location plan – including structured documentation of layers
• Trial pit and column profiles are created for geotechnical investigations
• Standard material types and substances are predefined and included
• Soil layers from one borehole profile can be transferred to a new borehole profile object
• Soil conditions are visualized both in the profile and in the location plan
• Soil layers from borehole profiles are output as 3D solids

Excavation and excavation pits are calculated, designed, and integrated into the digital terrain model. Excavation pit volumes are calculated, excavation plans are created, slopes are determined, and berms are designed for civil engineering applications – BBSoft® provides an integrated solution for excavation pit design across all excavation pit types and slope configurations.

• Excavation pit volumes are calculated using the prism method in accordance with REB
• Excavation pit volumes are calculated for both simple and irregular geometries
• Excavation plans are created and excavation pits are visualized directly in the CAD location plan
• Slopes of excavation pits are calculated – including slope angles and excavation profiles
• Berms in civil engineering are designed as stepped slopes with integrated berms
• The software supports excavation pit design for the construction of pits and embankments
• Digital terrain models are intersected for excavation pit planning
• Slope hatching includes color-coded highlighting of cut and fill areas
• Digital terrain models can be isolated inside or outside a boundary line
• Plausibility checks are performed for generated excavation pit DTMs
• Excavation volumes are presented as 3D solids
• Backfilling calculations are performed, and all volumes are summarized

Contour lines are calculated, elevation profiles are generated, and terrain models are visualized – the DTM analysis from BBSoft® provides all relevant information about the terrain surface: elevation nodes and elevation layers are created and calculated, slopes are analyzed, and catchment areas as well as flow paths are visualized in CAD.

• Contour lines are calculated – including major, intermediate, and minor contour lines in the 3D terrain model
• Elevation profiles are generated – including longitudinal and cross-profiles along defined section axes
• Terrain models are visualized – elevation layers are displayed using color gradients
• Elevation nodes allow terrain elevation to be queried at any point in the 3D model
• Elevation layers are created and calculated – with color gradations for visual analysis
• Contour lines are labeled on a separate layer and can be customized individually
• Slopes of 3D surfaces are highlighted using color coding
• Flow arrows are displayed across all 3D surfaces, with optional slope labeling
• Flow time zones and flow velocities are calculated using the Manning-Strickler method
• Catchment areas and depressions are calculated and visualized
• Depressions are assigned water textures and output as 3D surfaces
• High and low points of a digital terrain model are determined in sections
• Legends and statistics are generated at user-defined positions