A two-story modular dormitory is a dormitory block built by stacking standard container-based modules two high on the same ground footprint. The point is land, not height: on a tight site, doubling vertical occupancy halves the ground area you have to clear, drain, fence and service. It pays off when the camp is land-constrained — a plant compound, a mine lease, a port-adjacent site — and when the headcount is large enough that a single-story layout would sprawl beyond the fenced area or onto poor ground.
Stacking is not a different product. Wanbang uses the same modular platform as the single-story camps, with a stackable unit variant built for stacked arrangements. The planning question is therefore not “can it be done” but “how many floors, and what does the second floor demand of access, fire and structure.”
All four unit types on the platform share a standard footprint of 6,055 mm × 2,990 mm. A single-story dormitory row occupies that footprint once. Stack two modules and the ground footprint is unchanged while the sleepable area roughly doubles.
| Layout | Ground footprint | Sleepable area |
|---|---|---|
| Single-story module | 6,055 × 2,990 mm | One module |
| Two-story stack (2 modules) | 6,055 × 2,990 mm | Two modules |
The arithmetic is worth doing before you commit to a layout. If a single-story block of N dormitory modules houses N × (occupants per module), the same N modules stacked in pairs houses about 2 × N × (occupants per module) on the same ground area. The occupants-per-module figure is set by your bunk layout, not by the product — the platform only fixes the footprint.
The saving lands in three places: the plot you clear and fence, the drainage and utilities you run under it, and the distance security has to patrol. On a land-constrained lease those three are often the binding constraint, not the unit count.
The dormitory modules sit on the same materials platform as the rest of the camp range. The verified product specifications are set out below.
| Specification | Value |
|---|---|
| Standard module footprint | 6,055 × 2,990 × 2,896 mm |
| Wall system | Colour-steel rock wool sandwich panel |
| Floor system | Cement fibre board with PVC surface |
| Stated service life | 10–15 years |
| Seismic rating | Intensity grade 8 |
| Wind rating | Typhoon resistance grade 10 |
| Fire performance | Class A fire-resistant rock wool core |
| Steel finish | Baked-enamel, fade-resistant up to 5 years |
| Assembly | Bolted connections, no site welding |
| Drainage | Centralized internal system |
These are platform-level numbers. They do not change because the module is on the ground floor or the second floor — the structure, wall and floor systems are identical; what changes at height is access, egress and the connection between stacked modules.
Capacity is a multiplication, and only one of the three factors is fixed by the product. Start from the module count, multiply by occupants per module (your bunk layout), then by the number of stories.
Headcount = (modules per block) × (occupants per module) × (stories). The platform fixes the footprint; your layout fixes the rest.
A planning example, not a product claim: a block of 20 modules in a two-story stack (10 ground + 10 upper) at 4 occupants per module houses about 80 workers on a footprint that a single-story layout would need 40 modules to match. The 4-occupant figure is an illustrative bunk assumption — confirm it against your own layout and the labour agreement for the site.
The discipline is to keep the second floor from becoming a bottleneck. Stairs, landings and the upper-floor corridor must carry the same peak load as the ground floor, so capacity planning and access planning are the same exercise.
A second floor changes the fire plan in one way that matters most: nobody on the upper floor can step straight outside. That makes two means of escape — not one — the planning baseline for any two-story block.
The product contributes at the material level: the rock wool wall and floor cores are Class A fire-resistant, which slows spread between modules. But material rating is not a fire strategy. The layout still has to provide two independent escape routes from the upper floor, protect the stair from the corridor, and keep smoke from pooling at the top of the stack.
Two further points are set per site, not by the catalogue: the spacing between dormitory blocks (fire breaks) and the detection and alarm coverage. Both should be confirmed against the local code and the project’s own fire engineer before the layout is frozen.
The stackable quick-assembly variant is the unit built for this job. Like the other units it ships knock-down, but packed for stacked use at roughly 6 units per 40-foot high-cube container — fewer than the single-story quick-assembly unit because the stacking connection hardware travels with it.
On site the modules go together with bolted connections and no welding, and the second floor is formed by connecting modules through a purpose-built stacking frame. The exact number of floors a given frame supports, and the load it is rated for, is a structural determination made against the site — state it in the specification rather than assuming a number.
Two things to keep separate. The first is the platform: footprint, wall and floor systems, fire class, seismic and wind ratings, service life and finish are product-level facts that apply whether the module is on the ground or the second floor.
The second is everything the height adds: occupants per module, number of stories, stair and escape layout, fire breaks, detection and the stacking-frame load rating. Those are set per site by your layout, the local code and the structural design — not by a stock item. A two-story dormitory is a specification, not a catalogue pick.
When the camp is land-constrained and the headcount is large enough that a single-story layout would sprawl beyond the fenced area or onto poor ground. Stacking halves the ground footprint for the same occupancy.
No. The footprint, wall, floor, fire class, seismic and wind ratings are identical to the single-story platform. What changes at height is access, egress and the connection between stacked modules.
Headcount equals modules per block × occupants per module × stories. The platform fixes the footprint; occupants per module and stories are set by your layout and the structural design.
Two independent means of escape from the upper floor, a protected stair, and smoke control at the top of the stack. The Class A rock wool cores slow spread, but the escape layout and fire breaks are set per site by the local code and fire engineer.
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