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Office & Living
Insulated accommodation and office modules, single units to three-storey buildings.
- 6,058 × 2,438-2,990 mm
- 2,500 mm internal height
- PIR or mineral wool
- stackable to 3 storeys
A steel-framed insulated module built to be lived in or worked in, connected to its neighbours, and stacked. Tanax builds them as single site offices, as accommodation blocks of 16 to 40 units, and as multi-storey buildings on an engineered steel substructure. The envelope is a sandwich panel; everything behind it, heating, cooling, sockets, sanitary, corridor connection, is specified per project.
Specification
Dimensions
- External, standard
- 6,058 × 2,438 × 2,800 mm
- External, wide
- 6,058 × 2,990 × 2,800 mm
- Internal clear height
- 2,500 mm
- Atypical lengths
- up to ~8,500 mm on request
Envelope
- Wall panel
- PIR 60-100 mm, or mineral wool where fire class A1 is required
- Roof panel
- up to 140 mm
- Floor insulation
- 100 mm
- Frame steel
- EN 1090-1 EXC2, welded per EN ISO 3834-2
Loading
- Floor design load
- 300 kg/m²
- Roof design load
- 150 kg/m²
- Module mass
- ~3.5 t per unit, ~112 t for a 33-unit building
Services
- Heating
- electric wall convector, typically 1 per room
- Cooling
- wall split unit, 2.6 kW per cell typical
- Sockets
- 2 double per cell as standard, specified up
- Window
- 1,800 × 1,200 tilt-and-turn, U ≤ 1.1 W/m²K
Fire
- Achievable ratings
- EI 30, REI 30, DP1 non-combustible build
Finish
- Frame / panel
- RAL 5010 frame with RAL 7035 panels is the common pairing
Specification
Dimensions
- External, standard
- 6,058 × 2,438 × 2,800 mm
- External, wide
- 6,058 × 2,990 × 2,800 mm
- Internal clear height
- 2,500 mm
- Atypical lengths
- up to ~8,500 mm on request
Envelope
- Wall panel
- PIR 60-100 mm, or mineral wool where fire class A1 is required
- Roof panel
- up to 140 mm
- Floor insulation
- 100 mm
- Frame steel
- EN 1090-1 EXC2, welded per EN ISO 3834-2
Loading
- Floor design load
- 300 kg/m²
- Roof design load
- 150 kg/m²
- Module mass
- ~3.5 t per unit, ~112 t for a 33-unit building
Services
- Heating
- electric wall convector, typically 1 per room
- Cooling
- wall split unit, 2.6 kW per cell typical
- Sockets
- 2 double per cell as standard, specified up
- Window
- 1,800 × 1,200 tilt-and-turn, U ≤ 1.1 W/m²K
Fire
- Achievable ratings
- EI 30, REI 30, DP1 non-combustible build
Finish
- Frame / panel
- RAL 5010 frame with RAL 7035 panels is the common pairing
How it is built
The decisions behind the numbers
One unit, a base, or a building.
A single module is a site office. Sixteen modules connected through corridor units make a self-contained accommodation base with sanitary and food preparation. Thirty-plus modules on a steel substructure make a three-storey building with an internal two-flight staircase. The engineering changes at each step; the module does not.
PIR or mineral wool is a fire decision, not a cost decision.
PIR gives the better thermal number per millimetre and is the default. It does not achieve REI 30. Where the fire authority requires REI 30, or where the designer requires DP1 with all materials in Euroclass A1 or A2-s1,d0, the build changes to mineral-wool sandwich panels on walls and ceiling, and roof chipboard is replaced with cement board. This has been executed and certified, and it is the single most common late change on an accommodation project. Bring it up on day one.
Corridors are a fire-safety constraint, not a layout preference.
Where each unit's access route has to be fire-protected, an open external gallery on the upper storey is not permissible. An internal two-flight staircase in a dedicated stair module is the answer, and it costs one module out of the count.
The substructure is usually the bigger engineering job.
Placing a three-storey block on top of an existing structure means a steel support frame designed to real loads: floor 300 kg/m², roof 150 kg/m², plus module self-weight. Tanax designs, fabricates and erects that frame to EN 1090-1 EXC2. On a 33-module alpine building the frame alone was a six-figure package.
Configurations
Variants and where to find them in the catalogue
- No photograph yet
VisualisationVisualisation - No photograph yet
Build detail
What the detail photography shows
Interior fit-out detail, coat rail 
Module being craned into position 
Row of connected accommodation modules 
Window and personnel door assembly 
Lined interior with finished floor 
Steel substructure of a multi-storey block 
Crane installation on site 
Office module outside the workshop 
Connected modules, second row 
Module lifted onto its base
Visualisations
Renders and drawings, labelled as such
VisualisationVisualisationModular building concept
Standards
What we build to and what we issue
- EN 1090-1, EXC2
- EN ISO 3834-2
- EN 13501-1
- EN 12464-1
- HD 60364
- EN ISO 8501-1 / ISO 12944
| Standard | What it covers |
|---|---|
| EN 1090-1, EXC2 | Steel structure execution and CE marking |
| EN ISO 3834-2 | Welding quality requirements |
| EN 13501-1 | Reaction to fire, Euroclass A1 / A2-s1,d0 |
| EN 12464-1 | Interior lighting levels |
| HD 60364 | Low-voltage electrical installation |
| EN ISO 8501-1 / ISO 12944 | Surface preparation and coating durability |
Documentation issued
CE declaration of performance for the steel structure, fire-resistance certificates for the specified build-up, load data for the designer, electrical inspection report, as-built layout, SK and EN installation manual.
Proof
Deployments with a number in them
- 01
200+ modules
Delivered under one multi-year framework for a Central European ministry of defence: accommodation cells, corridor units, and men's and women's sanitary blocks, installed as connected sets.
Read the case study - 02
33 modules over three storeys
On a steel frame above an existing structure, for an alpine ski resort operator. Fire requirement escalated from REI 30 to a full DP1 non-combustible build during design; the build-up was changed and certified.
- 03
6 × 3 m
The non-ISO footprint a United Kingdom infrastructure services group was buying, quoted as a wide-body alternative at lower cost for the same usable function.
Scope
What the price includes, and what it does not
Included
- Module, insulation and internal lining
- Electrics to the module boundary
- Heating and cooling units
- Windows and doors
- External coating
- Connection kit between modules
- Load data and fire certificates
- Installation manual
Not included
- Foundations, hard standing and site preparation
- External utility connections up to the module
- Furniture
- IT and telephony
- Execution design of the building as a whole
- Building permits and construction supervision
If we have not built exactly this before, we will say so and tell you what we have built that is closest. Two prototype programmes in this factory were delivered below cost because nobody said that early enough. We do not do that any more, to you or to us.
Lead times
By variant
| Variant | Lead time |
|---|---|
| Single site office or gatehouse | 4-6 weeks |
| Accommodation cell, repeat spec | 6-10 weeks |
| 16-module base, complete | 12-16 weeks |
| Multi-storey building with steel substructure | 20-30 weeks including execution design |
Engagement
Four ways to buy
Buy a catalogue unit
Pick from 94 published SKUs with full specifications, get a price, get a delivery date.
Modify a catalogue unit
Start from a standard shell and change what needs changing. Fastest route to a non-standard requirement.
Build to your specification
You bring the specification or the drawings, we review them, we build. Prototype and serial priced separately.
Subcontract fabrication
You are the prime, we are the hall. EN 1090-1 EXC2 capacity with AQAP 2110 assurance behind it.
Process
Specification to delivery in five steps
- 01
Send the specification.
A drawing, a tender annex, or three sentences. Whichever you have.
- 02
Review, in writing.
We tell you what is missing or contradictory before anyone quotes. 3-5 working days.
- 03
Quotation.
Bottom-up: material at purchase cost, co-operation, direct hours at a fully absorbed rate. 2-3 weeks for a complex build.
- 04
Design freeze and build.
Changes after freeze are variations, priced and agreed.
- 05
Test, document, deliver.
Factory acceptance where specified, full document pack, delivery and installation where quoted.
FAQ
Questions procurement asks
Can these be stacked?
Yes, to three storeys as standard. Above that, or on top of an existing structure, the module sits on an engineered steel frame that we design and fabricate.
PIR or mineral wool?
PIR unless fire resistance is specified. PIR does not achieve REI 30. If your fire report asks for REI 30 or DP1, budget mineral wool from the start.
What is the real internal height?
2,500 mm on a 2,800 mm external module. That is the number your designer needs.
How heavy is one module?
About 3.5 tonnes finished. A 33-module set is about 112 tonnes on the substructure.
Can you make a longer module?
Yes, up to roughly 8,500 mm. It stops being an ISO footprint at that point, which affects road transport and stacking.
Do you install?
Yes, including crane coordination and connection into sets. Foundations and site works are not in our scope.
Send us the specification. A drawing, a tender annex, or three sentences.
You will get a written review of it inside a week, whether or not you buy anything.
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