Our story
OD3 started in 2012 with a single workstation and a simple conviction: a constructible model beats a drawing. The practice has since grown into a team of structural engineers, detailers and surveyors running seven Tekla stations, with contracts delivered across the UK, Ireland and Australia — most of it repeat work from the same fabricators and contractors.
Bringing connection design in-house, with IDEA StatiCa, ended our clients' dependence on third-party calculations — one roof for design and detailing means faster approvals and fewer hand-offs. Adding the Trimble X7 scanner and robotic total station setout closed the loop in the other direction: we now capture the as-built reality we model against, and set out on site what we design.
Our approach
We bring reality capture, BIM, structural engineering and site setout under one roof, so data moves cleanly from the point cloud to the fabricated, verified structure — without the gaps and hand-offs that cost time and accuracy.
Accreditations
- Steel Construction Institute (SCI)
- Irish Association of Steel Fabricators (IASF)
- Constructionline
- £2m professional indemnity insurance
- NSSS (5th Edition, CE Marking) working practice
- Connections to Eurocode 3 — SCI Green Book


