Cold-Formed Steel Software for Portacabins, Prefab & Modular Construction
Cold-formed steel (CFS) software is the light gauge steel framing stack — Vertex BD for BIM framing and CNC roll-forming, plus STRAP's cold-formed module for code-compliant analysis — that lets fabricators and structural engineers design, detail, and fabricate portacabins, prefab housing, and modular buildings in one workflow. Checked against IS 811, AISI S100, EN 1993-1-3, and AS/NZS 4600 across India, the Middle East, and global markets.
18,000+
CFS users globally via Vertex BD
GCC fleet-scale
Portacabins & modular housing across UAE, Saudi, Qatar
Seismic-ready
Turkey rebuild, India IS 1893, Eurocode 8 — all in STRAP
8 codes — 5 regions
Code-compliant across India, US, Europe, AU/NZ, UK
What is cold-formed steel?
Cold-formed steel — also called light gauge steel framing or LGS — is structural steel that is rolled or press-braked into shape at room temperature from thin galvanized sheet, typically 0.8 mm to 3 mm thick. Unlike hot-rolled sections, cold-formed members stay straight, carry precise dimensions, and never warp on site.
The most common cold-formed steel sections are C-studs and tracks for walls, C- and Z-purlins for roofs and secondary framing, hat-sections for cladding, and lipped channels for trusses. Together they form the structural skeleton of modular buildings, bathroom pods, residential homes, commercial fit-outs, mezzanines, and increasingly mid-rise hotels and student housing.
What makes CFS unique is the manufacturing pipeline: a BIM model drives a roll-forming machine directly, producing labelled, pre-cut, pre-punched members that assemble on a factory floor in hours. It is the closest the construction industry gets to repeatable, industrial-scale manufacturing — and the software stack is the part that makes it possible.
At a glance
- Thickness: 0.8 – 3 mm
- Forming: Roll-forming, press-braking
- Typical sections: C-stud, track, Z-purlin, hat, angle
- Core applications: Modular, residential, fit-out, purlins, trusses
- Versus hot-rolled: Lighter, straighter, factory-precise
Four stages, one model, zero re-entry
Every cold-formed steel project runs through the same four stages — architecture, framing, analysis, fabrication. Our stack keeps a single BIM model from the first floor plan to the last G-code line.
01 — Architectural
Architect the building
Start with floor plans, elevations, and a 3D envelope. Vertex BD imports DWG, IFC, and SKP — or you draft from scratch in its BIM environment.
02 — Framing
Auto-frame the walls, floors, roof
Vertex BD applies your framing rules — stud spacing, header logic, opening reinforcement — across every panel automatically. Noggings, king studs, trimmers generated in minutes.
Vertex BD — available in India, GCC, Singapore
03 — Analysis
Run the code‑compliant structural check
Export framing to STRAP's cold‑formed module. Check every stud, track, and connection against AISI S100, IS 811, Eurocode 3 Part 1-3, or AS/NZS 4600 — whichever you need.
STRAP cold‑formed module — global distribution
04 — Fabrication
Push straight to the roll‑former
Vertex BD writes native G‑code and manufacturer‑specific files for 25+ roll‑forming lines — Howick, FRAMECAD, Scottsdale, Pinnacle, Randek, Weinmann, and more. No manual re‑entry on the shop floor.
Every stud, track, and strap — from one BIM model.
Vertex BD generates load-bearing CFS wall panels with studs at 600 mm c/c, top and bottom tracks, strap bracing, and pre-punched noggings. STRAP checks the whole assembly against AISI S100 or IS 811 before a single C-section leaves the roll-former.
Where cold-formed steel earns its place
CFS is what makes construction repeatable off a factory line. Six places it dominates.
Portacabins & site accommodation
Site offices, labor villages, worker accommodation, and temporary facilities — the dominant CFS use case across GCC mega‑projects. Fleet‑scale roll‑forming and one‑week factory turnaround.
Affordable modular housing
Worker and affordable housing under Saudi Vision 2030, Dubai social programs, and NEOM-scale developments. Volumetric CFS modules shipped and assembled in days.
Rapid‑deployment & relief shelters
Disaster‑relief housing, refugee units, temporary medical facilities, and war‑zone shelters. CFS panelization ships flat, assembles fast, and carries seismic loads.
Seismic‑zone modular housing
Earthquake‑resistant housing for Turkey, Iran, Pakistan, and other seismic regions. CFS light weight minimizes seismic mass; STRAP verifies TBEC 2018, IS 1893, Eurocode 8.
Modular buildings
Hotels, schools, clinics, and student housing shipped as volumetric modules. Roll‑formed CFS frames assemble in a factory, stack on site in days.
Bathroom pods
Pre‑finished bathroom units for hospitality and residential. Vertex BD drives every panel, finish, and MEP cut‑out from one BIM model.
Residential framing
Single‑ and multi‑family homes framed in light gauge steel. Replaces timber with straight, non‑combustible, termite‑proof walls — often at lower total cost.
Mezzanines & fit‑outs
Internal mezzanines, partition systems, and warehouse offices. CFS stays true, carries load, and fits through any standard door.
Purlins (PEB hybrids)
Z‑ and C‑section purlins for pre‑engineered buildings, carports, canopies. Integrates directly with mkaPEB for hybrid main‑frame‑plus‑CFS‑purlin jobs.
Trusses
Roof and floor trusses in cold‑formed steel. Vertex BD engineers the truss layout, generates shop drawings, and exports to CNC saw and swage lines.
One analysis engine, five jurisdictions
STRAP’s cold-formed module runs the effective-section, buckling, and connection checks for every major CFS design code. Pick the code; the output stays clean.
Cold‑formed light gauge steel structural members — the Indian standard.
North American specification for the design of cold‑formed steel structural members.
Eurocode 3 Part 1-3 — supplementary rules for cold‑formed members and sheeting.
Cold‑formed steel structures — the AS/NZS combined design standard.
Structural use of steelwork — cold‑formed thin gauge sections (legacy UK code).
Saudi Building Code for cold‑formed steel structures — referenced for KSA worker housing, portacabins, and NEOM‑scale programs.
Dubai Municipality structural and thermal regulations — referenced for UAE portacabin fleets, labor accommodation, and prefab developments.
Türkiye Bina Deprem Yönetmeliği — seismic design for rapid-reconstruction housing and modular units post-2023 earthquake.
The complete cold-formed steel stack
Three tools, one workflow. Vertex BD frames and details. STRAP analyses and checks. CNC integration writes machine code straight from the BIM model. Most CFS competitors sell one piece; we sell the pipeline.
Vertex BD
Framing & detailing
The leading BIM platform for cold-formed steel framing. Automated panels, trusses, cut lists, and CNC output. 18,000+ users globally via the Vertex Systems network.
Available from RAM CADDSYS in India, GCC, and Singapore
Learn moreSTRAP — Cold-formed module
Structural analysis
Code-compliant design of cold-formed sections, connections, and full CFS structures. Handles AISI S100, IS 811, Eurocode 3 Part 1-3, and AS/NZS 4600 in one engine.
Global distribution rights via RAM CADDSYS
Learn moreCNC roll-forming integration
Fabrication output
Vertex BD writes native files for 25+ CNC roll-forming lines. Skip manual shop-floor input and cut panel-to-panel error to near zero.
Bundle available in India with partner machine vendors
Learn moreRunning a hybrid PEB + CFS job?
Many projects use hot-rolled portal frames with cold-formed purlins. See how mkaPEB and the CFS stack share one BIM model.
Frequently asked questions
Cold-formed steel basics, codes, tooling, and territory. If your question isn’t here, our engineering team is one message away.
What is cold-formed steel?
Cold-formed steel (CFS), also called light gauge steel (LGS) framing, is structural steel that is bent and rolled into shape at room temperature — unlike hot-rolled steel, which is shaped at high temperature. Typical CFS sections are C-studs, tracks, Z-purlins, and hat-sections, usually 0.8 mm to 3 mm thick. They are lighter, straighter, non-combustible, and termite-proof, making them ideal for residential, modular, and mid-rise construction.
CFS vs hot-rolled steel — when do I use each?
Hot-rolled I-beams and H-sections are for heavy load paths — primary portal frames, long spans, heavy industrial buildings. Cold-formed steel is for secondary structure and lightweight enclosures — wall panels, floor joists, roof purlins, trusses, modular units, and low- to mid-rise residential. Many projects hybridize: a hot-rolled PEB main frame carries the roof with cold-formed purlins spanning between, all from the same BIM model.
Does STRAP support cold-formed steel design?
Yes. STRAP includes a dedicated cold-formed steel module that handles AISI S100, IS 811, Eurocode 3 Part 1-3, and AS/NZS 4600 section checks. It analyses effective widths, local/distortional/global buckling, and connection design for screws, bolts, and welds. RAM CADDSYS has global distribution rights for the STRAP cold-formed module.
Can Vertex BD export directly to a CNC roll-former?
Yes. Vertex BD has native drivers for 25+ CNC lines including Howick, FRAMECAD, Scottsdale, Pinnacle, Randek, Weinmann, Hundegger, and MiTek. A panel drawn once in Vertex BD generates the machine file automatically — no manual shop-floor re-entry. This is the single biggest productivity win in CFS manufacturing.
Which design codes are supported?
Across the bundle you get IS 811 (India), AISI S100 (US and Canada), AISI S240/S400 (US construction standards), Eurocode 3 Part 1-3 (Europe), AS/NZS 4600 (Australia and New Zealand), and BS 5950-5 (United Kingdom, legacy). For territory-specific appendices or local practice standards, contact our engineering team.
Is this available in my country?
The STRAP cold-formed module has global distribution rights via RAM CADDSYS — we can license it anywhere. Vertex BD is available through RAM CADDSYS in India, the GCC, and Singapore. If you are in another territory, the global Vertex Systems network covers 147 countries — we will route you to the correct regional partner and handle the STRAP side directly.
I currently use FRAMECAD or another CFS tool — is Vertex BD an alternative?
Yes. Vertex BD is a direct FRAMECAD alternative, with broader BIM coverage (architectural, truss, modular, prefab all in one environment) and compatibility with 25+ roll-forming machines including FRAMECAD lines. Many teams switch for the combined BIM-plus-analysis workflow when paired with STRAP. Request a side-by-side demo on your actual project files to compare.
Do you offer training?
Yes. Every Vertex BD and STRAP license includes onboarding and training through RAM CADDSYS Campus. Courses are certified and come with a live license for the duration of the training. Custom on-site training is available for enterprise deployments in India, the GCC, and Singapore.
What does a typical modular construction workflow look like?
Architectural design in Vertex BD → automated CFS framing of walls, floors, roof, and trusses → IFC export to STRAP for structural check against the relevant code → revisions looped back into Vertex BD → panel drawings and CNC files generated in one click → roll-formed on the shop floor → volumetric modules assembled and shipped to site. End-to-end from design to factory typically runs one week per residential module versus three weeks for traditional CAD-plus-manual workflows.
Can CFS be used for earthquake-prone zones like Turkey, Iran, or Pakistan?
Yes — cold-formed steel is well-suited to seismic zones precisely because it is lightweight (less mass means less seismic force) and ductile. STRAP's cold-formed module handles Turkish TBEC 2018, IS 1893 seismic loads, and Eurocode 8 for seismic design. Post the 2023 Turkey earthquake, CFS modular housing has been deployed at scale for rapid seismic-compliant rebuild. Vertex BD generates the framing; STRAP checks every stud and connection against the relevant seismic code.
Are CFS portacabins and prefab units viable for GCC climates?
Yes — CFS is ideal for GCC portacabins, labor accommodation, and prefab housing. Galvanized cold-formed sections resist termites, corrosion, and fire in a way timber cannot, and roll-formed panels assemble faster in hot conditions than on-site masonry. Thermal performance is a function of insulation and cladding — Vertex BD models the full envelope so the design engineer can optimize for Gulf heat. CFS portacabins are now standard for site offices, worker villages, NEOM-scale programs, and Vision 2030 housing projects.
Which Middle East and regional codes are supported?
The stack covers Saudi Building Code SBC 306 (cold-formed steel structures in the Kingdom), Dubai Municipality structural regulations, Qatar Construction Specifications, and Turkish TBEC 2018 for seismic. Core international codes — IS 811, AISI S100, EN 1993-1-3, AS/NZS 4600 — are also used widely across the GCC by consultants aligning with parent-company jurisdictions.
What projects use rapid-construction CFS in the Middle East?
Portacabin fleets for mega-developments (NEOM, Riyadh Metro, Qatar World Cup legacy sites, Dubai Expo site camps), affordable and worker housing under Saudi Vision 2030, humanitarian shelters and disaster-relief housing across the region, and post-earthquake reconstruction in Turkey. Cold-formed steel wins where schedule is tight, volume is high, and logistics favor factory-built modules over on-site concrete.
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