The prestressed concrete voided slab standards include slab widths of. Revit slab cut by void family a how to guide revit. Traditional voidedslab forming systems that have been used include waffle slabs, singleand doubledirection span forming systems, and hollowcore precast slabs. The interface was changed in the meantime so navigating them especially the examples manual may be difficult. Voided concrete slabs provide an open floor plate with fewer columns and no beams to limit design and ultimate use possibilities. Typical abutment details for steel beam and girder bridges.
Plastic voided slab systems are significantly lighter than solid concrete slabs while maintaining the ability to have large spans. These void formers are most commonly made of plastic such as highdensity polyethylene, and may use recycled materials. This technical manual has been prepared by smorgon steel group on behalf of humes to facilitate the. Data voided slab lebar jalan jalur lalulintas b1 7. This should prevent wasting paper by accidentally sending it to the printer. Voided slab free download as powerpoint presentation. Modeling decks not available through the bridge modeler.
This floor system allows for large, clear spans and efficient overall slab thicknesses. From excavation to toppingout, the positive contribution of voided slab weight reduction alone delivers surprising advantages for owners, designers and. Perhitungan voided slab jombor fly over yogyakarta oleh. It done to reduce the dead the dead weight of the slab. Slabs are lighter because less concrete is used in voided slab. Dgn standard bridge drawing in microstation design file format. Void forms used with caissonsupported foundations to. Modeling decks not available through the bridge modeler must be done with direct methods. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems. The precast prestressed concrete voided slab structure is a popular bridge.
A voided slab is a concept that simply removes the excess concrete from the expensive part of the structure slab. Voided biaxial slabs vbs are a resource efficient design for concrete slabs by incorporating voids which significantly reduce overall materials use. Fanella, mustafa mahamid, and michael mota publication. It is a slab from which some part of concrete is removed near the area where it is less useful. Bridge replacementnansemond parkway map pdf contact us. This is your homepage which is what most visitors will see when they first visit your shop. A prestressed concrete bridge deck for spans up to 300. Analytical study of solid flat slab and voided slab using ansys workbench. Tech structural engineering project of voided and cellular deck slab bridge 1. The advanced modeling features available for direct bridgedeck modeling include the following. Voided slabs are a precast prestressed slab for bridge, building, marine pier and fish passage culvert replacement applications.
They consist of two thin slabs and ribs connecting them, having the same or better performances than a solid slab, with less concrete used. Bridge replacementmineral spring road map pdf contact us. These slabs can be used in applications where slab depth may be an issue or when construction speed is a factor. In general voided slab systems are economical for spans between 35 and 50 feet. The bridge modeler provides design templates for conventional decksection types, including flat slab, concrete box girder, and steel girder with a castinplace deck. Voided slabs are significantly improved versions of solid slabs and offer more improvements for the building as a whole. Volume v part 5 prestressed concrete slab standards. Scon infrastructure is specialised in field of prestressing and manovering in. Flat plate voided concrete slabs, reinforced concrete floor systems, twoway slabs, voided slabs date. Bridges manufactured by oldcastle precast, a pci certified plant, offer a low maintenance, durable, low cost bridge system.
This reduced the slabs nonaxial dead load by 30% while maintaining biaxial strength, and saved 786 cubic feet of concrete on the job. Flood voidslab, our trademark voided slab unit, is flood wideslab with attached eps void formers that allows the slab to span further and reduces the unit self weight. Ultra lightweight buildings re designing cobiax construction, less balls and more reduction in concrete research pdf available may 2015 with 2,405 reads how we measure reads. Nansemond parkway bridge replacement of the superstructure with a single prestressed concrete voided slab supported on new concrete abutments. Using modified material properties or modified slab behavior properties is a possible way to simulate such a voided slab. Design waiversexceptions are required when changes to the standards are made. This product innovation evolved due to the requirement of our customers to achieve greater structural spans whilst reducing the overall building mass and maintaining the benefits of our flood wideslab. If it can be imagined, concrete can help make it happen and there is a good chance voided concrete slabs will make it happen more flexibly. T here are many thirdparty pdf printer drivers that will work with revit, such as adobe pdf, cutepdf, pdf995, etc. Voided slab 18 depth voided slab is a full deck unit for spans from 270 to 500. By practical experience and lots of actual data on tens of prestressed concrete v.
A typical 6 inch voided slab will give a coefficient of thermal conductivity of around 1. Fpasc110 specification and application of void spaces below concrete foundations 11 november 2007 issued for website publication foundation performance association structural committee page 3 of 22 glossary carton forms are shoring elements designed to provide a void space between expansive soils and foundation systems, while providing a temporary support formwork. This reduces the deadload of the slab, which may be as much as 35 percent, enabling longer spans to be covered. The required bubbledeck slab type is the next size up from the minimum bd voided slab thickness. Where the slab is designed as a flat slab, the provisions of 3.
It is now gaining popularity both in europe and in asia. As needs change, your building is better prepared to adapt. Unfortunately, the help isnt much help unless you are running 2014. Prestressed concrete slab standards the revision is intended to clarify modifications to standards. If you are talking about a thin top slab and a thin bottom slab with air between them, thats beyond the scope of the program.
The best way to save a report is to print it to a pdf printer. The study provides a recommendation with regard to how the virginia department of transportations structure and bridge division could revise its guidance on design, construction, and maintenance of adjacent member prestressed structures such as voided slabs to address issues identified in this study. The design can be carried out to eurocode 2 and full consideration of prestress losses is taken into account, based upon the casting, prestressing and construction methods used for. S, maximum strains of the midspan sectional concrete and strains of tendon are calculated according to actual date of the midspan deflection yc, which show whole structual working condition, as a result, method for fast test of structural bearing capacity can be deduced, which would make determining. This design guide presents stateoftheart practices in voided slab construction. Because of this efficiency, this system can withstand an increased load. Abstract a voided slab is a concept that simply removes the excess concrete from the expensive part of the structure slab. However, you can export sheets to a dwg use the dwg to pdf. Complete isolation of the floor from bearing walls, columns, nonbearing partitions, stairs, and utilities allows the slab to move with minimum damage to the structural integrity of the building. Ali, 20 flexural capacities of twoway reinforced concrete bubble deck slabs of. Pdf standard bridge drawing in adobe portable document format. Innovative structural slab construction practices have taken the efficiency of traditional slab systems to new heights. The term void has a precise meaning that has sometimes been confused with the more liberal term voidable. Several vbs technologies have been introduced over the last few decades, primarily to reduce the weight of buildings, and.
Voided biaxial slabs, sometimes called biaxial slabs, are a type of reinforced concrete slab. The bridges are rapid to construct, easy to design and have received wide acceptance within the marketplace. Mineral springs road bridge replacement suffolk, va. Method for fast test of prestressed concrete voided slab. The beam shown below is a standard aashto voided slab sii36 but i could have drawn any section in autocad in a similar way and imported this as a dxfdwg import. Physical address 442 w washington street 2nd floor suffolk, va 23434. Hence according to the structural efficiency point of view the voided slab shows good agreement.
A pdf driver is not integrated directly with revit. Forensic investigation of two voided slab bridges in the. Guidelines for design of voidedslab systems youtube. Designer supplement to the standard bridge drawing in adobe portable document format. Pgsuper tells me the live load distribution factors could not be calculated and a refined analysis is needed. You can change this text by editing the welcome page via the pages menu in your dashboard. The concept of the voided slab is simple in that concrete mass is removed from the areas in the slab where it is not needed to resist load and as a result of the reduced dead load, voided slabs can span further.
An essential feature of this type of construction is the floating floor slab. One member of the research team guided the truck driver throughout each test to ensure that the. Forming voids in concrete concrete construction magazine. Plastic voided slab systems are an alternative to traditional concrete slab construction. One of the more recent innovations is voided slabs, where plastic voids are cast within concrete after being placed in a precise grid. Accepted like a standard solid slab same regulations as for a solid slab directly incorporated in eurocodes. Voided concrete flat plate slab systems, which have. Pdf ultra lightweight buildings redesigning cobiax. Design and experimental study of voided slab with proposed new.
These section of slab are replaced with some lighter is material. For slab analysis a fem computer program is used, 5. That which is null and completely without legal force or binding effect. Pdf the experimental analysis of bubbledeck slab using.
The slab construction employed bubbledeck, which precisely sets recycled plastic void formers that look like bowling balls in the hollow deck to displace concrete along the neutral axis. All voided biaxial slabs incorporate an array of rigid void formers which contain air within the voids. Analytical study of solid flat slab and voided slab using. Replacement of superstructure with two prestressed concrete voided slab spans supported on new concrete abutments. What are my options for getting pgsuper to analyze.
Voided slab example icon computing computing scribd. Europe, north america, oceania, and so on so this paper verified structural concept and performance, economic effects of twoway void slab and analyzed co2 emission reduction effect through construction materials. Design of flat plate voided concrete slab systems authors. It was invented by jorganbreuningof denmark about 20 years ago. Free pdf printers are available from and pdf creator. Voided slab is a method of virtually eliminating all concrete from the middle of a floor slab, which is not performing any structural function, thereby dramatically reducing structural dead weight.
Response from customer support to a similar question i raised unfortunately both help and the examples manual of autodesk structural bridge design 2017 correspond to autodesk structural bridge design 2014. Design, serviceability, fire resistance, and construction article pdf available in practice periodical on structural design and construction 223. The guiding principle, is that building owners and designers can get the advantages of a thin twowayspanning flatplate structure while the structural engineer can lighten the floor. Page 4 of 10 shear capacity in % of solid deck ad 2.
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