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Steel bar truss floor decking is a composite floor system that combines prefabricated steel truss reinforcement with a galvanized steel base plate. The assembly is placed directly on structural beams and serves as permanent formwork during concrete pouring. Once the concrete cures, the truss reinforcement integrates with the slab to carry operational loads. This system eliminates the need for temporary formwork installation and removal, streamlining floor construction for multi-story buildings.
The diameter of upper & lower rebar | 6-14mm |
|---|---|
The diameter of web rebar | 4-7mm |
The height of the truss | 70-270mm |
The diameter of the Horizontal support rebar | 10mm(h≤100MM), 12(H＞100MM) |
The diameter of the Vertical support rebar | 12mm(h≤100MM), 14(H＞100MM) |
The thickness of the deck | 15mm |
The width of the deck | 600mm |
The thickness of protective concrete | 15mm, 20mm, 25mm, 30mm |
The length of the steel truss deck | 1.0-12m |
Material Specifications | Width (mm) | Height (mm) | Upper Chord Rebar | Web reinforcement | Bottom Chord Rebar |
|---|---|---|---|---|---|
6-4-4 | 80 | 110 | 6 mm | 4 mm | 4 mm |
6-4-4 | 80 | 80 | 6 mm | 4 mm | 4 mm |
6-4-6 | 80 | 110 | 6 mm | 4 mm | 6 mm |
6-4-6 | 80 | 80 | 6 mm | 4 mm | 6 mm |
Rebar Material | Rel(Mpa) | Rm(Mpa) | Agt(%) | Weight Deviation(%) |
|---|---|---|---|---|
CRB550 | 530 | 560 | 11.3 | 4 |
HRB400E | 450 | 670 | 15.6 | 4.4 |
The standard expanded width measures 1000mm, aligning with conventional construction module dimensions. Available deck thickness ranges from 1.0mm to 3.0mm to accommodate light-duty storage floors through heavy-industry platform loads. The triangular truss geometry distributes loads across the slab section.
The base plate uses hot-dip galvanized steel with zinc coating weights ranging from 275g/m² to 600g/m², conforming to ASTM A653 standards. The zinc layer provides barrier and cathodic protection against moisture and atmospheric corrosion in industrial and coastal construction environments.
The triangular truss configuration distributes construction and service loads across the reinforcement network. Load capacity ranges from 300-1000 kg/m² depending on truss height, rebar specification, and slab thickness. Closed-rib and perforated deck profiles are available for different project requirements.
As permanent formwork, the deck system removes the need for temporary wood or steel formwork and associated propping. On-site rebar work is reduced to supplementary reinforcement only. Field data indicates construction time savings of 30-50% compared to traditional cast-in-place floor methods. The reduced dead load of the composite slab also lowers foundation design requirements.
Manufacturing plants, logistics warehouses, and mixed-use commercial developments utilize this system for rapid floor construction across multiple levels. The system supports both regular floor plans and irregular building geometries.
In tall building construction, the lightweight composite slab reduces overall structural weight while meeting floor stiffness requirements. The prefabricated nature of the truss deck supports fast-track construction schedules.
The system is applied in high-speed railway stations, exhibition halls, parking structures, and concrete structure additions. It also accommodates cantilevered sections and transfer floor configurations where construction access is limited.
Production lines support custom truss heights, rebar diameters, deck lengths, and zinc coating weights tailored to project specifications. OEM and ODM orders are accepted, including project-specific packaging and marking requirements.
Manufacturing follows a multi-stage inspection workflow: incoming material inspection against drawings and samples, equipment calibration, trial production runs, finished product testing, and third-party inspection coordination. This IQC-IPQC-FQC sequence documents each production phase.
Deck panels are bundled and strapped for container or breakbulk shipment. Standard production lead time falls within 10-25 days after deposit confirmation. Logistics teams coordinate with multiple shipping lines to arrange sea freight and provide tracking updates throughout transit.
Span capacity depends on truss height, rebar specification, concrete slab thickness, and design load requirements. The specific span is calculated based on project structural drawings and relevant building codes during the quotation phase.
Yes, the system is suitable for mezzanine additions in industrial and warehouse facilities. The lightweight composite slab imposes lower additional loads on existing structure compared to conventional concrete slabs. Engineering verification of the supporting structure is required prior to installation.
Hot-dip galvanized base plates with 275g/m² to 600g/m² zinc coating resist corrosion during the construction phase and provide long-term protection at exposed edges. Once encased in concrete, the majority of the deck surface is sealed from atmospheric exposure.
Installation requires properly aligned structural beams at the correct elevation. The deck panels are laid directly on the beams, secured with spot welds or mechanical fasteners, and supplemented with additional rebar as specified before concrete pouring.
