Industrial land near ports and major cities is getting too expensive for sprawling single-story sheds. Across electronics parks, garment factories, pharmaceutical R&D centers, and hospital support complexes, developers are building upward, putting heavy warehousing on the ground floor, assembly lines on floors two and three, and clean laboratories or offices on the top floor.
When you build a three- or bâtiment industriel de cinq étages, you have two structural choices: cast-in-place reinforced concrete, or a multi-storey structural steel frame paired with galvanized steel floor decks and insulated sandwich wall panels.
Concrete is cheap in raw material terms. On a multi-story industrial floor, though, it steals two things you can never get back: construction time and usable floor space. Casting a four-story concrete factory requires erecting forests of timber or aluminum formwork, tying rebar by hand on every level, pouring concrete, and waiting weeks before stripping the shoring to start the next floor. And to hold up four heavy concrete floors, ground-floor concrete columns have to be massive, often 800mm x 800mm square blocks that eat into production aisles.
A multi-storey steel building changes the workflow completely. At Hihsteel, we fabricate welded H-beam or square box columns and floor girders in the workshop while your ground foundation is still being dug. On site, cranes bolt up two or three stories of steel columns in a single lift. Crews immediately roll out profiled galvanized steel floor deck sheets across the beams, weld shear studs through the deck, and pour a thin composite concrete topping slab without needing heavy vertical shoring props underneath. Three floors can be poured almost at the same time.
Because structural steel is far stronger per square inch than concrete, a 450mm steel box column carries the same load as an 800mm concrete column, giving you wider assembly lines on every floor. When wrapped in 100mm fire-rated rock wool exterior panels and cloisons intérieures pour salles blanches , like our hospital support building in Auckland and office envelope in Stockholm, the total building weight drops by 30% to 40%, cutting seismic loads and foundation piling costs.
Foire Aux Questions (FAQ)
Q : Comment les étages supérieurs sont-ils construits dans une usine à structure métallique à plusieurs étages ?
A : Upper floors use a composite steel-concrete deck system: 0.8mm to 1.2mm galvanized corrugated steel floor decking (trapezoidal or dovetail profile) is laid across secondary steel floor beams, fastened with headed shear studs, laid with anti-crack wire mesh, and topped with 100mm to 150mm of poured concrete.
Q : Quelle charge d’exploitation un atelier en acier à plusieurs étages peut-il supporter ?
A : Floor beams and decks are engineered to match your exact machinery: standard office floors are designed for 2.5 to 3.5 kN/m² (250 to 350 kg/m²), light electronics and garment workshops for 5.0 kN/m² (500 kg/m²), and heavy equipment floors for 8.0 to 15.0+ kN/m².
Q : Comment les bâtiments en acier à plusieurs étages respectent-ils les codes de résistance au feu de 2 à 3 heures ?
A : Main steel columns and floor beams are sprayed with intumescent fireproof paint (which expands into a char foam in a fire) or encased in fire-rated gypsum/vermiculite board, while exterior walls and stairwells use Class A1 non-combustible rock wool sandwich panels.
Q : Les planchers en acier rebondissent-ils ou vibrent-ils lorsque les ouvriers marchent ou font fonctionner des machines aux étages supérieurs ?
A : Not when properly stiffened. By welding shear studs that lock the concrete slab and steel I-beam into a single composite T-beam and keeping secondary beam spans between 2.0 and 3.0 meters, floor vibration meets strict precision-manufacturing limits.
Q : Combien de temps un bâtiment en acier de 4 étages gagne-t-il par rapport à un bâtiment en béton coulé de 4 étages ?
A : Because steel columns go up in multi-floor tiers and galvanized steel floor decking acts as permanent formwork (eliminating timber form stripping delays), a 4-story steel structure shell and envelope typically finishes 35% to 45% faster than cast-in-place concrete.
