Steel Structure Warehouse

Standard steel workshops and warehouses are designed for a 50-year service life, and the main steel structure meets this under normal maintenance. The steel is protected either by abrasive blasting with an epoxy zinc-rich primer or by hot-dip galvanising — hot-dip galvanising is recommended for high-salinity coastal environments. Roof cladding, sealant and similar ancillary items are consumables that need periodic inspection and replacement.

Clear spans of 12–36 m are standard without internal columns; larger spans can use trusses or portal frames — the larger the span, the higher the cost and the roof load requirements. Yes, bridge or single-girder cranes can be fitted, typically from 1 t to 50 t; the crane capacity and lifting height must be stated at design stage so the steel columns and corbels can be reinforced.

Yes. Structural calculations follow the wind pressure, snow load and seismic requirements of the project location, and structural calculation reports can be provided to support local plan review and certification.

It depends on the area and complexity. For a standard warehouse of about 1,000 m², material production takes roughly 25–40 days and on-site installation typically 15–30 days; rainy seasons and remote locations extend the schedule. Everything ships disassembled and packed, together with the bolts, drawings and installation manual.

Steel members can be coated with fire-retardant paint to reach Class II or Class I fire rating; if flammable or explosive goods are stored, a dedicated fire protection design with fire walls and fire doors is required. For insulation, common solutions are mineral wool sandwich panels, glass wool with colour-steel sheeting and PU sandwich panels — mineral wool performs better in fire and PU insulates better. An uninsulated colour-steel building does get hot in summer, but with insulation, roof ventilators, skylights, exhaust fans and ventilation louvers the indoor temperature improves significantly.

We provide foundation drawings and load parameters; foundation construction is normally carried out by a local contractor. The client normally pours the reinforced concrete floor slab to the required capacity — typically 5–10 cm for general storage and 15–20 cm in areas with heavy forklifts. Sloping ground is no problem: column lengths are adjusted to the site levels to form a levelled foundation, avoiding the cost of grading the entire site.

Yes, as long as the structure has reserve load capacity; if no allowance was made in the original design, the structure must be re-checked before modification. Light steel partitions, a second-floor office mezzanine, toilets and switch rooms can all be planned together at drawing stage.

With proper workmanship the risk of leaks is very low. We use overlap waterproofing, sealant, flashing and gutter and downpipe systems. Standing-seam roofing is our first recommendation because it performs better than ordinary overlapping colour-steel sheets.