Buenos Aires sits on the west bank of the Río de la Plata, the widest river estuary in the world. It is Argentina’s largest city and its main commercial port. The climate is humid subtropical. Summers run December to March and reach 30°C, with frequent afternoon thunderstorms. Rainfall averages around 1,100mm a year and is spread across all twelve months. There is no dry season. Winters are mild, around 11°C in July. Humidity stays high year-round and peaks above 80% in autumn and winter. When a global port terminal operator needed a new container freight station at its Buenos Aires facility, Xinguangzheng was brought in to design and deliver the steel structure.
The challenge
Our client builds and runs port gateway terminals across six continents. The Buenos Aires terminal handles international dry containers, refrigerated cargo, and breakbulk freight. The new building was needed as a dedicated CFS warehouse. LCL cargo from several shippers arrives here, gets sorted, and is stuffed into outbound containers. Inbound containers are stripped and their contents moved to waiting trucks.
The operational brief was specific. The building needed 10,000m² of clear floor for consolidation and stripping work. Truck reception had to happen at floor level, not dock height — the brief called for direct floor discharge. Column spacing had to leave room for forklifts to move between sorted cargo lanes.
Two things shaped the structural brief. First, operational load. A working CFS floor carries forklifts, pallet jacks, stacked cargo, and trucks driving in and turning inside the building. The floor and frame had to be sized for that. Second, the riverfront environment. The terminal sits on the Río de la Plata waterfront. The river brings constant humidity and seasonal condensation cycles. It is not a marine salt environment like an ocean terminal, but it is harder on steel than an inland site. These two points defined the brief for this CFS steel warehouse in Buenos Aires.
What we built
A 10,000m² steel portal frame warehouse building was designed for the terminal site. It gives clear-span floor area for consolidation and stripping, with a column grid matched to the client’s forklift and cargo lane layout. All structural members were prefabricated in Qingdao and shipped to Argentina via the Port of Buenos Aires, direct to the terminal berth.
Primary frames were fabricated from Q355B steel to GB/T 1591. Mill certificates and a project-specific material equivalency review were submitted and accepted against the material requirements of CIRSOC 301-2018, which governed the structural design.
The project design basis was approved on 7 December 2025 under CIRSOC 101-2005 for loads and CIRSOC 102-2005 for wind. Those were the provisions in force at that date. CIRSOC 101-2025 and 102-2025 entered national force in January 2026, after the design basis had been fixed. Wind loading was assessed for open terrain exposure across the Río de la Plata fetch.
Buenos Aires falls in Seismic Zone 0 under INPRES-CIRSOC 103. For this 9m-high warehouse, we checked applicability against the Zone 0 provisions for building class and height. Wind governed the lateral frame design. Reinforced spread footings were sized at each column position from the terminal’s site geotechnical data. Foundation design and construction were handled by the client’s local civil contractor.
Here is how we addressed the five core technical requirements:
- CFS floor layout — Column grid at 20m × 12m, giving clear forklift lanes and cargo sorting zones between columns. Eaves height of 9m clears high-stacked pallets and reach-truck operation across the full floor.
- Truck reception at floor level — Ground-level openings on the primary loading face with wide-span sliding steel doors sized for truck entry. Floor-level reception removes the need for dock levellers and allows direct tail-gate-to-floor unloading.
- Floor specification — 200mm anti-dust hardened concrete slab, f’c = 35 MPa, on a 250mm compacted granular subbase reaching k ≥ 50 MPa/m. Designed for a 100 kN forklift axle load and a 105 kN truck single-axle load at reception. Steel fibre reinforcement at 30 kg/m³. Saw-cut contraction joints on a 6m grid, with 16mm dowels at 300mm centres at construction joints.
- Riverfront corrosion protection — Corrosivity classified as C3 to ISO 12944-2:2017 for an inland riverfront industrial site with elevated humidity. Coating system to ISO 12944-5:2019, durability class M: epoxy primer at 60 µm NDFT plus polyurethane topcoat at 60 µm NDFT. Surface preparation to Sa 2½ per ISO 8501-1:2007. All cut edges and connection plates coated before erection.
- Envelope and ventilation — 50mm glass wool with internal steel liner and vapour retarder on roof panels, handling condensation risk through the Buenos Aires winter. Continuous ridge ventilators with matched low-level louvres, sized per the project ventilation brief.
One complication came up during the foundation phase. March is the tail end of the summer storm season here. Two heavy afternoon thunderstorms in the first week flooded open footing excavations. We installed temporary perimeter drainage around the excavation zone and moved all concrete pours to morning windows, ahead of the afternoon build-up. No pour was compromised. The foundation programme finished within its planned duration.
10,000m² · Q355B portal frame · CIRSOC 301-2018 design · 20×12m column grid · 9m eaves · C3 riverfront coating · Floor-level truck reception
Full technical specification
| Item | Specification |
|---|---|
| Total footprint | 10,000m² — CFS consolidation and stripping floor |
| Column grid | 20m × 12m — matched to forklift and cargo lane layout |
| Eaves height | 9m — reach-truck and high-stack clearance |
| Primary steel | Q355B to GB/T 1591 — mill certificates and project equivalency review accepted against CIRSOC 301-2018 |
| Steel design code | CIRSOC 301-2018 |
| Load standard | CIRSOC 101-2005 — design basis approved 7 December 2025 |
| Wind loading | CIRSOC 102-2005 — open terrain exposure, Río de la Plata fetch |
| Seismic | INPRES-CIRSOC 103, Zone 0 — applicability checked; wind governed lateral design |
| Welding | CIRSOC 304-2007 as modified by CIRSOC 301-2018 Chapter J; AWS D1.1 as supplementary fabrication reference |
| Structural bolts | Class 8.8 |
| Foundations | Reinforced spread footings — designed and built by client’s local civil contractor |
| Floor slab | 200mm, f’c = 35 MPa on 250mm granular subbase, k ≥ 50 MPa/m |
| Floor design loads | 100 kN forklift axle / 105 kN truck single axle |
| Floor reinforcement | Steel fibre 30 kg/m³ |
| Floor joints | 6m saw-cut contraction grid; 16mm dowels at 300mm centres at construction joints |
| Corrosion environment | C3 per ISO 12944-2:2017, durability class M |
| Coating system | Epoxy primer 60 µm + polyurethane topcoat 60 µm NDFT per ISO 12944-5:2019 |
| Surface preparation | Sa 2½ per ISO 8501-1:2007 |
| Roof insulation | 50mm glass wool with internal steel liner and vapour retarder |
| Ventilation | Ridge ventilators + low-level louvres per project ventilation brief |
| Truck access | Ground-level sliding steel doors — floor-level truck reception |
| Fire systems | Detection and sprinkler by client’s local contractor |
| Port of entry | Port of Buenos Aires — direct delivery to terminal berth |
| Client confidentiality | Client name withheld under NDA; terminal operator details available on request |
Results
Handover took place on March 19, 2026 — the date set at contract award. March is the end of the summer storm season in Buenos Aires. The morning-window foundation programme absorbed the early storm activity without losing schedule.
At handover, all structural steelwork, cladding, insulation, floor finish, and door sets were signed off against the project handover checklist. The CFS floor went into operation immediately. Truck reception, cargo consolidation, and container stripping have been running at the facility since.
The building came through the June–August winter without condensation issues at the roof liner or ventilator details. Internal conditions held as designed through the humidity peak. The client reports that the facility has increased covered CFS capacity at the Buenos Aires terminal. This project sits alongside our earlier industrial steel warehouse in Argentina, delivered to a different brief in the same market.
Port warehouse work brings its own set of problems — high floor loads, floor-level truck reception, riverfront humidity, and a live terminal running around you during construction. That combination separates metal buildings kit suppliers with real project experience from those quoting on standard industrial specs. If your terminal or port facility carries a similar brief, we can return a preliminary structural layout and all-in delivered cost estimate within three to four working days.
“The foundation programme handled the early storm conditions well. Handover was on schedule and the CFS floor went into operation immediately. The column layout works for our cargo lane configuration.”— Martín Ezequiel Rodríguez, Terminal Infrastructure Manager
