Allplan Steel
Parametric design of steel structures directly in ALLPLAN, up to level of detail LOD 350. Produce coordination drawings, industrial halls and roof structures with easy parameter changes — sections, bolted connections, sheeting and sandwich panels in a single tool.

See the add-on in action
A short overview of creating steel structures in ALLPLAN.
Steel, connections and sheeting — in one tool
A rich set of functions for coordination-level BIM design of steel structures.
A library of 16,900+ sections
I, U, Z, T, L, circular and rectangular sections — HEA, IPE, UNP, ROR, FLA, HEBT, Larssen and cold-formed.
Free profiles and orientation
Custom freeform profiles with any spatial orientation and rotation.
Perforations, cut-outs and stiffeners
Rectangular, polygonal and circular openings, custom cut-outs, stiffeners and flanges.
Connections at any angle
Horizontal and vertical connections, inheriting the angle of 3D elements and offsetting the system axis.
Bolted connections
Bolt sets, washers, hole and edge spacings, additional plates with webs, and reports.
Profiled sheeting and sandwich panels
Trapezoidal and corrugated sheeting, wall and roof sandwich panels with a variable level of detail.
Converting existing elements
Convert ALLPLAN elements (structural elements, 3D solids, timber/steel, macros) into profile parts.
Evaluations and IFC export
Quantities, weight, surface area, section type and length — with IFC export that preserves attributes.
What it is for
Coordination-level 3D BIM design of steel structures up to LOD 350 — halls, roof structures and coordination drawings.
Features and examples
The tool's key functions with a short description — sections, connections, sheeting, conversion and editing.

Profile elements
A library of 16,900+ standard and custom sections (I, U, Z, T, L, circular, rectangular) with any spatial orientation, plus perforations, stiffeners and flanges.

Bolted connection
Bolt sets with washers and nuts, free 3D placement and hole and edge spacings — plus additional splice plates and automatic reports on the number and weight of bolts.

Profiled sheeting
Trapezoidal and corrugated sheeting plus wall and roof sandwich panels with a variable level of detail (LOD) for quickly modelling the building envelope.

Conversion into profile parts
Convert existing ALLPLAN elements — structural elements, 3D solids, supports, and steel and timber components and macros — into parametric profile parts.

Editing options
Adjustment via handles (axes, angles, distances) and multiple editing of several different elements at once, with saving and loading of favourites.

Point-based editing
Point-based editing across several parts at once and attribute transfer with the "eyedropper" — fast, consistent alignment of the geometry of the whole structure.
Examples and instructions
The videos are taken from the original pages (German) — they will be replaced with localised versions. In the meantime, feel free to contact us for a demo or a consultation.
Overview — steel structures (DE)
Columns and beams — basic functions (DE)
Columns and beams — evaluations (DE)
Conversion into profile parts (DE)
Technical data
- Manufacturer
- CDS Bausoftware AG · Switzerland
- ALLPLAN
- Versions 2024 and newer
- Interface languages
- Croatian, English, German, French, Italian, Slovenian, Spanish, Czech, Slovak, Dutch, Turkish, Russian
- Level of detail
- up to LOD 350 (coordination-level BIM design)
- Formats
- IFC export preserving attributes
- Section standards
- HEAIPEUNPRORFLAHEBTLarssencold-formed
Licensing and trial period
Full functionality, no obligation
One user / e-mail
All workstations in the office
With an ALLPLAN student licence (campus.allplan.com)
For pricing and licensing, request a quote — we will come back to you with an offer tailored to your office.
Related add-ons
Tools that are often used alongside this one, in the same workflow.
Working on reinforcement?
The ALLTO line automates 3D reinforcement in ALLPLAN — slabs, walls, beams, columns, foundations and elevator pits. It is built for structural engineers: parametric PythonParts create the bars, sections and labels, and the quantities come straight out of the model.
Slab Reinforcement · Wall Reinforcement · Beam Reinforcement · Column Reinforcement
See the ALLTO lineTry Allplan Steel
Download the trial and use the tool for 14 days with no obligation, or get in touch for a demo or a quote.
The add-on is developed and maintained by CDS Bausoftware AG (Switzerland). The information and media on this page are taken from the manufacturer's original page: cds-stahlbau.ch.