Suspended Concrete Floor Systems
Suspended concrete slab systems provide a robust, durable, and high-performance flooring solution for residential, commercial, and multi-storey buildings. Compared to timber or steel joist floor systems, suspended concrete slabs offer superior structural stiffness, reduced vibration, improved acoustic performance, and enhanced thermal comfort.
Suspended slabs are typically cast in situ and supported by walls, beams, or columns. Depending on the project requirements, slabs may be constructed using removable or permanent formwork systems. Each system has distinct structural, construction, and cost considerations that must be carefully assessed during design.
At SNG Engineers, we specialise in the structural design and detailing of suspended concrete slab systems in accordance with Australian Standards and the National Construction Code. Our designs are practical, efficient, and coordinated with architectural and construction requirements to ensure buildability and cost-effectiveness.
Types of Suspended Concrete Floor System Design Services Provided By SNG Engineers
- Structural design and documentation for suspended concrete slabs
- Design of slabs supported on walls, beams, and columns
- Removable formwork slab design
- Permanent steel formwork slab design (e.g. Bondek, Condek)
- Reinforcement detailing and slab thickness optimisation
- Coordination with builders, architects, and formwork suppliers
- RPEQ-certified drawings and calculations
Removable Formwork Slabs
Removable formwork slabs utilise temporary timber or aluminium formwork that supports the concrete during construction and is removed once the slab achieves the required strength. This system allows for full control over slab geometry and finish but generally involves higher material, labour, and construction costs.
Removable formwork systems are typically adopted where architectural or structural constraints limit the use of permanent formwork.
Permanent Formwork Slabs
Permanent formwork slabs incorporate profiled steel decking, such as Bondek or Condek, which acts as formwork during construction and remains in place as part of the slab system. Temporary propping is used during pouring and removed after curing.
This system offers a more efficient and cost-effective construction method, reducing labour time while maintaining excellent structural performance.
With extensive experience across a wide range of suspended slab applications, SNG Engineers delivers clear, practical, and compliant structural solutions. We focus on structural efficiency, constructability, and long-term performance, providing reliable designs that support smooth construction and durable outcomes.
Contact us today for a competitive free quote for your next project.