Steel Fibres, Synthetic Fibre, Steel Fibres Australia
When constructing large, jointless, restrained warehouse slabs, there are only two options. A conventionally reinforced slab with two layers of heavy mesh, or the much more economical Dramix Combi Slab solution utilising 4D Dramix fibres and a single layer of mesh.
Comsi Slab also proves an excellent option for external yard slabs, providing large joint-free bays that are economical to construct.
McVeigh Consulting realised the significant advantages of removing all joints in an External H.D. Pavement, and so designed a “Seamless” Dramix 4D Combi Slab for the new 10,000m2 facility at the Port of Brisbane. Logos were again keen to have this solution for their new facility, which was built by McNab as one of their first steel fibre reinforced projects. QR Contracting placed the Boral concrete to a very high quality finish, in very tough conditions, and the facility is in full operation within a few weeks.
BOSFA were approached to offer a design solution for the shotcrete covering the contiguous piles surrounding the New Children’s Hospital in Perth Western Australia. A State Government project constructed by the John Holland Group.
The design requirement was for a design crack width of 0.2mm being achieved using Bekaert®’s proprietary design software. The solution uses a std mesh and a dose rate of Dramix fibres to achieve the desired crack width.
With approximately 5Klm of shotcrete the design has proved to be a very cost effective design solution.
WWWHP (World Wide Warehouse Hai Phong) continued building the next phrase of their renting warehouse. The project is a suspended slab with 5400m2 floor area. The client wanted to have a flat floor according to Fm2 – TR34, the floor has been cast using a strip method, utilising a Dramix® 4D Combi slab solution enabling tight crack control and removing expansion joints.
The project was designed under ‘crack width’ consideration. With benefit of steel fibre, we could utilize the performance of steel fibre together with conventional reinforcement to act as moment resistance and crack control at the same time. The design provided a cost effective solution which met both ultimate and serviceability requirements.
High performance steel fibre Dramix® 4D plus mesh was used to carry 140kN post load. The Combi Slab solution makes it possible to design a monolithic slab, without joints, to meet tight rotation requirements from ASRS supplier. Providing an exceptional finished product.
Coca Cola Amatil new Distribution Facility in Queensland Australia, a 30,000m2 warehouse. This warehouse includes 9,000m2 of High-Bay Racking with an automated storage handling system. At 35 metres high, and with post loads of 27 Tonnes, the most suitable solution was a Seamless Combi Slab. The remaining 21,000m2 uses our more typical Jointless slabs with Dramix 3D 65/60BG at 30kg/m3. With Dramix 4D initialised in the many foundations on the project as well. McVeigh consulting engineers worked very closely with BOSFA and Bekaert® in determining the right solution for the Combi Slab to accommodate the different sorts of loading that will be applied to the slab. And they were able to utilise our Bekaert® Software to confirm the designs themselves for the fibre only slabs and the foundations. A great example of everyone working together, with the tools available, to achieve the best possible solution in multiple applications on the one high profile project.
11,000m2 External Container Pavement (Independent Real Estate Consortium)
Dramix 4D Combi Slab allowed for significant reduction in slab thickness from Conventional Design, including Client requirement for fully-loaded Container Pavement (no BPA reduction factor applied), the removal of Saw Cuts also attractive for long-term maintenance savings.
As any owner of a commercial facility knows the concrete slab is the life line of the operation, if it fails its very difficult to operate and keep up the demands of the day to day efficiencies required of any commercial operation. This is why the Dramix Combi Slab option offers such a perfect solution. With the removal of not only saw cuts but also dowelled joints, the risk of the slab not being operational from a damaged joint is completely eliminated.
With the removal of joints the overall slab can also be designed thinner and more robust and this is why container yards are now opting for this solution, the benefits far out way the risk of a failed slab.
Well done to Kerman’s, Perth Concrete Services and Holcim for an excellent job.
The new 27,000sqm Northline facility in Regency Park, South Australia utilised the tried and tested Dramix fibre only jointless solution for the internal slabs. With the external slabs adopting a Dramix Combi Slab, enabling the removal of all saw cuts and all dowelled joints from the pavement. Having no joints makes for the most efficient design with the additional benefit of long term reduced maintenance cost with the removal of costly jointing systems.
The external yard pavements, which are heavily worked, were designed without saw cuts and had armoured full depth high moving plate dowels at 25m centres.
The external yard pavements, which are heavily worked, were designed without saw cuts and had armoured full depth high moving plate dowels at 25m centres.
The external yard pavements, which are heavily worked, were designed without saw cuts and had armoured full depth high moving plate dowels at 25m centres.
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