Portakabin HQ for Workdry Group: modular design lessons for project engineers
Reviewed by Joe Ashwell
First reported on The Construction Index
30 Second Briefing
Portakabin will deliver a three-storey headquarters building for the Workdry Group in Hampshire using 66 bespoke modular units as a showcase for modern methods of construction. The office will be assembled from factory-finished modules, reducing on-site construction time and programme risk compared with a conventional steel frame. For civil and structural teams, the scheme points to increased use of volumetric modules for multi-storey commercial buildings, with tighter tolerances and repeatable connection details driving faster fit-out and earlier occupation.
Technical Brief
- Three-storey HQ formed from 66 bespoke volumetric modules manufactured off site in controlled conditions.
- Factory-finished units reduce wet trades on site, simplifying temporary works and weather-risk management.
- Modular approach allows repetition of structural connections, aiding standardised QA/QC and faster structural sign-off.
- Services distribution can be pre-coordinated within modules, tightening tolerances for penetrations through floors and cores.
- Transport and cranage logistics for 66 units drive early planning of lifting points and bearing arrangements.
- Foundation design must accommodate concentrated line and point loads from modular stacking rather than continuous frames.
- Fire and acoustic compartmentation are largely built into each module, reducing reliance on on-site linings and seals.
- Scheme provides a live reference for applying volumetric modular construction to other multi-storey commercial offices.
Our Take
Within our 869 Infrastructure stories, there are relatively few Hampshire-based items, so Portakabin’s 66-module scheme signals that modular office solutions are now being specified for regional industrial hubs rather than just large metropolitan projects.
For operators like Workdry Group, a 66-module bespoke office complex typically allows future expansion or reconfiguration with limited disruption, which can be attractive where site operations or headcount are expected to scale over time.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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