BIM-to-Laser Beam Connection Detailing
The digital thread from BIM model to finished steel is laser cutting's strongest advantage in structural fabrication. Connection plates, gussets, and beam end preparations flow directly from Tekla Structures or SDS/2 into the laser's NC program — eliminating manual layout, reducing errors, and compressing lead times.
Quick Answer
Modern BIM-to-laser workflows export DSTV/NC1 files from Tekla or SDS/2, which are imported into nesting software (SigmaNEST, Lantek) for automatic plate nesting. For beams, 3D models define cope cuts, holes, and weld preps that are converted to tube/beam laser NC code. This eliminates 2–4 hours of manual layout per connection and reduces fit-up rework by 60–80%.
BIM-to-Laser Workflow
1. Connection Design (Tekla / SDS-2 / Advance Steel)
Engineer defines connections per AISC/EC3 standards. Software generates all plates, holes, welds, and bolt patterns.
2. DSTV/NC1 Export
BIM software exports plate geometry as DSTV (Stahlbau) files or DXF/STEP. Each plate includes hole pattern, contour, and part marking info.
3. Nesting Software Import
SigmaNEST, Lantek, or Trumpf TruTops imports DSTV files, groups by material/thickness, and automatically nests plates on sheets.
4. NC Generation & Cutting
Nesting software generates laser NC code with optimized cutting path, lead-ins, and part marking (engraved piece marks).
5. Part Identification
Laser engraves piece mark, assembly number, and orientation marks directly on each part during cutting. Eliminates paint marking.
Connection Types Suited for Laser
| Connection | Components | Laser Advantage | Typical Thickness |
|---|---|---|---|
| Shear tab (fin plate) | Single plate with bolt holes | Bolt holes cut during contouring | 8–15mm |
| End plate moment | Stiffened plate with holes | Complex bolt pattern precision | 15–30mm |
| Base plate | Anchor bolt holes + stiffeners | Accurate anchor hole placement | 20–40mm |
| Gusset plate | Contoured plate for bracing | Complex contour from BIM model | 10–25mm |
| Splice plate | Bolt holes for column/beam splice | Hole pattern accuracy | 12–25mm |
Related Topics
Disclaimer: BIM-to-laser workflows require compatible software versions and proper data exchange setup. Consult with your software vendors for specific interoperability requirements.