MicroStation

DGN V8 supports unlimited levels, multiple models within one file, and embedded raster references. Set working units (master units, sub-units, resolution) at file creation—changing later risks precision loss. Use the 'Compress Design' tool periodically to remove unused elements and reduce file size.

Create cells for repeated elements (symbols, details, equipment). Shared cells store geometry once and reference it multiple times—editing the shared definition updates all instances. Organize cells in .cel libraries by discipline. Use point cells for single-insertion-point symbols, graphic cells for multi-element groups.

Organize elements on named levels with assigned colors, line styles, and weights. Use level filters to show only relevant disciplines. Create level libraries (.dgnlib) for consistent standards across files. Apply 'ByLevel' symbology so elements inherit level display properties for uniform plotting.

Attach external DGN/DWG files as references for multi-discipline coordination. Use 'Live Nesting' to see nested references from attached files. Set logical names for reference paths to support portable project structures. Lock display of stable references to improve redraw performance in complex models.

Define Item Types to attach structured data (properties) to any graphic element—similar to IFC property sets. Create Item Type libraries per project standard. Use the Properties dialog to populate data and EC Expressions for computed values. Export Item Type data to Excel or query via Bentley iTwin.

Use MicroStation's parametric constraints to define relationships between 3D elements. Apply dimensional and geometric constraints in Feature Modeling mode. Create parametric solids that update when constraint values change. Combine with named expressions for spreadsheet-like control over complex parametric families.

AccuDraw provides real-time coordinate input using polar (distance+angle) or rectangular (X,Y) modes. Lock axes with Enter key, toggle mode with spacebar. Use compass rotation (T key) to align with existing geometry. Master AccuDraw shortcuts to dramatically speed up precision placement without typing coordinates.

Use ProjectWise for document management, version control, and workflow automation. Check out DGN files for exclusive editing, check in with revision comments. Configure Saved Searches for quick access to working sets. Integrate with MicroStation's reference system to automatically resolve paths from the managed repository.

Use MicroStation's mesh modeling for reality capture workflows and conceptual design. Import OBJ/STL meshes, edit with push/pull vertex tools. Convert meshes to analytical surfaces using surface fitting. Reduce polygon count with decimation while preserving key feature edges for efficient visualization.

Create print sets defining multiple views, scales, and pen tables in a single configuration. Print Organizer automates multi-sheet output to PDF/plotters. Define fence-based print areas linked to saved views. Schedule batch printing for large drawing sets and track print history for document control.

Bentley View is the free viewer for DGN files—distribute to stakeholders without full MicroStation licenses. Use i-model publishing for lightweight sharing with embedded properties. Ensure reference file paths are relative or embedded for portable packages. Test view presentation before distributing to external parties.

Assign Geographic Coordinate Systems (GCS) to DGN files for geo-referenced design. Select datum and projection (UTM, State Plane) from the built-in library. Use reprojection tools to align data from different coordinate systems. Enable terrain model display with elevation data for infrastructure corridor projects.

Develop custom applications using the MDL (MicroStation Development Language) C++ API for high-performance tools. Access the DGN file model via mdlElement functions. Build dialog boxes with resource files. Compile MDL applications (.ma) using the MicroStation SDK. Distribute via the MDLAPPS configuration variable.

Import point clouds (LAS, LAZ, E57) for as-built documentation and brownfield design. Use classification filters (ground, vegetation, buildings) to show relevant data. Set point density display limits for smooth interaction. Clip clouds with fence tools for section analysis and clearance verification.

Write VBA macros for MicroStation automation using the built-in VBA IDE (Tools > Macros). Access the MicroStation object model for element creation, modification, and queries. Use UserForms for custom dialogs. Record actions to generate starter code, then enhance with loops and conditionals for batch processing.