Cobiax slab pdf
Cobiax Middle East is a trading and manufacturing company specialized in innovative construction systems and solutions. E360 void formers over a 4,400m2 slab area, parking bays were created with a width of 2.5m and a clear headroom height of 2.25m. Omnia System overview 4 Benefits 5 Construction details 6-7 Bearing details 8 Temporary support 9 Cobiaxdeck System overview 10 Benefits 11 Design and construction 12-13 Nationwide service 14 The Omnia system from Hanson Building Products is a pre-cast floor panel that provides the direct equivalent of an in-situ slab but provides the facility to combine pre-cast and in-situ concrete. α = angle between the shear reinforcement and the plane of slab fywd,ef = effective design strength of the punching shear reinforcement, = 250 + 0.25 d ≤ fywd (MPa.) d = mean effective depth of the slabs (mm) V v v u d Ed Ed Rd,max 0 β Max. Cobiax  slabs contain synethic void forming modules making slabs up to 35% lighter. The filigree are then transported to the construction site and lifted in place by crane. The hollow slab is a flat surface element made of prestressed concrete, with a constant edge, made lighter by longitudinal hollows. BubbleDeck is a precast concrete floor system which makes floor slabs lighter and stronger by incorporating large, hollow plastic balls in a lattice of steel.
The data of seven different floor designs was obtained and compared to conventional solid slabs, leading to a final evaluation of the vibration performance of Cobiax flat slabs. The cobiax method is the method that engineers replace empty balls inside the slab to reduce the unusable dead load of slab. Each product line has been uniquely developed to comply with rigid specifications, to satisfy specific contractor requirements, and to address challenging project conditions. Bubbledeck and Cobiax firms first discovered this innovation and started to use hollow PB with diameters of 18-45 cm inside RC floor slabs . Get traffic statistics, SEO keyword opportunities, audience insights, and competitive analytics for Iaiest. Architectural freedom, Flexibility in Design and Use, Fast and Inexpensive, Savings and Environmental Benefits. Comparing between VDS and the post tension applied voided slab system, VDS showed superb performance over the post tension applied voided slab system.
The laboratory study showed that, at 0.1 percent by volume of fibers, the reinforced concrete did not provide appreciable enhancement of material properties over non-reinforced PCC. Mike Mota, "Voided slabs then and now", Concrete Industry Board Bulletin, Summer 2010. Design Depth of Slab Design depth is the gross depth of the slab, less any depth that is expected to be lost as a result of grinding, grooving, or wear. Design Depth = 240mm - 15mm = 225mm Effective Length to Design Depth Ratio The effective length to design depth ratio is 2915mm/225mm = 13 Core Depth Core slab depth is shown in the figure below. voided slab brands, BubbleDeck and Cobiax, have also been utilized in the United States. Posted by sevarac on Oct diagfammi, Dear izirion, We have released the Release Candidate 1 and in it we have resolved problems and added the requested features.
9 DESIGN AND ENGINEERING SAFETY EXCELLENCE AWARDS 2013 RESIDENTIAL – Merit The Residences at W Singapore – Sentosa Cove Qualified Person Er. The customer produces slabs measuring 11.6 metres long, 2.5 metres wide and 22 centimetres high in its steelworks. Those hollow void formers not only reduce the structural dead load of the slab (resulting in saving on the material cost and allowing larger slab spans), but also increase the thermal resistance of the slab.
When designing the Cobiax® slab, the EC2  does not include the design of slabs with flat rotationally void formers. Beeplate system uses plastic hollow bodies in honeycomb arrangement, forming 34 cm thick flat slab. To find out weight reduction of voided slab, first find out the volume of solid slab and volume of circle. Flat slab is defined as one sided or two-sided support system with sheer load of the slab being concentrated on the supporting columns and a square slab called ‘drop panels’.
although it could be analyzed as a ribbed slab, this would lead to.
slabs, void former modules, in-situ concrete, and additional reinforcements are delivered separately. Volume of solid slab is Vs= b x h x h and Vc = 4πr3/3 Where, b= Width of solid section surrounding a single sphere. Quick & light is a software tool for the determination of the cross-section of a cobiax slab as well as the calculation of the relevant input datas for the separate static dimensioning of a Cobiax flat slab.
FROM STEVEN HOLL ARCHITECTS: The new Visual Arts facility for the University of Iowa's School of Art and Art History provides 126,000 sf of loft-like space for the departments of ceramics, sculpture, metals, photography, print making and 3D multimedia. Also, the slender ceiling structures allowed the foundations to be reduced in depth, despite a slab span width of 14.5m. Cobiax provides a system to produce voided, biaxial, flat plate slabs as a high-quality concrete solution for large spans and slim slabs. Bubble deck slab is a method of virtually eliminating a part of concrete from the middle of a slab, which is not performing any structural function, and thereby reducing structural dead weight. Accepted 28 May 2014 Keywords voided slab, biaxial hollow slab, structural behavior, punching shear capacity, LEED, bubbledeck, cobiax, u-boot. comparison was made between a cobiax slab and a solid flat slab with drop panels. Cobiax void former technology offers similar solution with balls of 31.5 cm diameter, obtaining 39 cm thick slab. It gives the bending stresses in the bubble deck slab are found to be 6.43% lesser than of a solid slab.
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Stone-Plastic-Composite-Flooring-Market Overview of Stone Plastic Composite Flooring Market 2020-2026: Global Stone Plastic Composite Flooring Market 2020 research report presents analysis of market size, share, and growth, trends, cost structure, statistical and comprehensive data of the global market. Taking inspiration from nature, the system helps optimize building structures thru the introduction of void formers. The Cobiax slabs are the reinforced concrete slabs with implemented high-density polyethylene hollow void formers (Figure 2). The Solution The reinforced concrete super structure was the ﬁrst in the State of New York to use cobiax void formers, which consist of ﬁxed reinforcement steel elements with integrated void formers, and bi-axial bonded post-tension slabs. This measure saved close to 7,000 m³ of concrete which is a third of the amount of concrete required for a conventional building.
For instance, thanks to the reduced shell construction loads, the thickness of the floor slab and hence the depth of the foundation can be minimized. During the building of the shell construction this provides advantages during the lowering of the groundwater, because the construction site is located in the immediate vicinity of the River Spree. Post-tensioned, reinforced concrete slabs with embedded structural steel and cobiax void-formers enable the long spans and cantilevers of the south facade. A hollow core slab, also known as a voided slab, hollow core plank or simply a concrete plank is a precast slab of prestressed concrete typically used in the construction of floors in multi-story apartment buildings. A voided concrete slab is a system that removes the non-working or excess concrete from the structural slab and replaces it with void formers.
Massive concrete is replaced by synthetic void formers and remains only in statically relevant areas. It will also include graduate student studios, faculty and staff studios and offices, and gallery space. To avoid these limitations of conventional solid concrete slabs, the voided slab system is preferred. Get Free A Voided Slab And Conventional Flat Slab A Comparative StudySlab; A Comparative Study A voided concrete slab is a system that removes the non-working or excess concrete from the structural slab and replaces it with void formers. Two-way reinforced concrete slabs typically have span ratios less than 2 and are designed to span in two directions.
Lightweight concrete slabs Cobiax void former modules don’t just make the slab lighter. With its “Made in Germany” design, and the numerous production and sales sites at various locations worldwide, the brand is setting a sign for its mission: Intelligent and sustainable building – anywhere in the world. Thanks to this approach, it was possible to save almost 7,000 m 3 of concrete, or a third of the amount required for a conventional new building. The slab was cured for 28 days prior to testing, and its moisture content was measured to be 69% on the day it was tested. The application of the patented Cobiax slab technology has optimised notable projects for stationary traffic in Germany: the expansion of the underground garage at the Universitätsklinikum (University Clinic) and the multi-storey car park in the Glücksteinquartier (Glückstein quarter). These Instructions may give you an easy introduction into the application of the Cobiax software tool quick & light.
Another issue faced by traditional construction of slabs is the maximum span.
U-Boot Beton does not use spherical void formers like previous systems but uses truncated- pyramid shaped void formers instead. During the first decade there have been many studies on the feasibility of using the new technology. The concept of voided slab comes from an inactive concrete of solid slab, the inactive concrete is a concrete in locations of the slab that are less critical to resist the applied loads. models of the office slabs created for this study in SAP2000 verify the prior analysis and experiments.
Formwork for reinforced concrete slabs depends on the type of slabs to be constructed. During the building of the shell constructionthis provides advantages during the lowering of the groundwater, because the construction site is located in the immediate vicinity of the River Spree.
Cobiax USA offers lightweight solutions with bi-axial reinforced, voided flat concrete slabs. BubbleDeck is the patented integration technique of linking air, steel, and concrete in a two-way structural slab. Two-way slab systems come in many forms: flat plates, flat slabs, waffle slab, and two-way slab with beams. Adobe Fonts is the easiest way to bring great type into your workflow, wherever you are.
A Voided Slab And Conventional The Bubble Deck slab is a newly designed bi-axial concrete floor slab system. Waffle Slab Cross Section Reinforcement Detail This is a CAD dwg drawing with a typical Waffle Slab Cross Section Reinforcement Detail.
Cobiax Technology is based on generating specific hollows inside a reinforced concrete slab. STP top slab reinforcement and shuttering works Overall view of the project Side shuttering fixing works for basement drain walls Site Address: #5/1, 34/1, K Narayanapura Cross, Hennur Main Road, BLR-77. Figure 1.9 The Cobiax floor system (Cobiax®, 2016) The Versa floor is an innovative structural steel framing solution developed by the Metal Dek Group® and Diversakore™.
As depicted in Figure 3.2.11-1 of the Bridge Manual, the reinforcement which extend from the s concrete barrier into the slab as shear qualifies reinforcement (strengthening) for outside edgethe s of slabs. All of these sytems are solid reinforced concrete floor panels that are generally topped. slab is 220 mm, the reinforced column stripes are 2.40 m wide and 450 and 600 mm thick. When using Cobiax, workers first must use deck forms to form the bottom of the slab and the bottom layer of r einforcing steel must also be placed. 2.2 Cobaix The same hollow slab principle of creating voids within the concrete slab to lighten the building structure was developed in 1997 South Africa, which was called cobiax system.
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According toArticle 188.8.131.52, edge of slabs shall either be strengthened or be supported by an s edge beam which is integral with the slab. Analysis of Ceiling Slab of Office Centre This paper is devoted to an analysis of the ceiling slab using conventional and advanced technologies, namely, lightweight panels using Cobiax bodies. slabs (discussed in Chapter 2) with force controlled shear tests performed on laboratory Cobiax slab specimens.