Defination according to engineer florentino regalado1, the waffle slab belongs to the family of reinforced concrete slabs that are nonhomogeneous, lightened, and reinforced in two orthogonal directions, forming a ribbed plate. Waffle slab plan view reinforcement detail faculdade. Norwegian slab solutions knauf insulation free bim object. I wanted to use a floor hosted family to create a waffle slab. In this paper, the optimum design of reinforced concrete waffle slabs is so ught using the simple genetic algorithm. Download this free cad drawing of a flat slab detail for use in your construction cad models. Best practices for concrete slab design using revit structure florian. Waffle slab design and anlaysis as equivalent solid slab. The comparison is done on the basis of flexural parameters such as bending moments and shear forces obtained from various methods. Duplo wc compact concealed floor standing structure with compact cistern 8 cm and.
In ribbed slab, there is oneway spanning and in a waffle slab, there is twoway ribbed system. As an operator to use the roof with a slope of 0 degrees and with a changed angle at ends. If prefab concrete is not in the budget, consider purchasing casts for the concrete waffle slabs. Apr 22, 2014 slab heave occurs in a house slab when the ground moves more than your slab can stand. Products waffle mould, waffle slab teknik fiberglas. Formwork for ribbed concrete floors waffle moulds two way. Cost optimization of a composite floor system, oneway waffle. Diagrid slab cad drawing cadblocksfree cad blocks free. News holedeck holedeck certificate system lightened. The system is designed for heavy loads uniformly distributed superimposed analysis of waffle slab. Aug 03, 2017 in this video, i used beam system to model a waffle slab. The design of the holedeck active basic slab allows integrating systems and elements specifically designed for standard modular ceilings, as well as geometries and adapt to conventional modulations. The simplest and most economical floor system is the flat plate, where a plain floor slab about 20.
Our glass wool is manufactured with 80% recycled glass, which, combined with the natural, organic qualities of ecose technology binder, provides unmatched ecofriendly product. A waffle slab is a type of building material that has twodirectional reinforcement on the outside of the material, giving it the shape of the pockets on a waffle. Reinforcement detail for a waffle slab support on a reinforced concrete main frame end. Waffle slab or ribbed slab is a structural component which is plain on its top and contains grid like system on its bottom surface.
Keep the code using the aci code for equivalent frame analysis the flat slab analysis design software for waffle slab floors and flat slab floors the user has to put in a few geometrical figures and loads and the program does the rest. Since then, we have created an additional 41 products which improve sustainability and building performance in terms of energy efficiency, resilience, reducing co2 emissions, seismic resistance, occupant safety, worksite safety, and many other parameters. The lateral loads are independently resisted by shear walls. Jul 5, 20 cad drawing detail with a plan view of a ribbed waffle slab that can be used as an example for other projects. A twoway floor system consisting of a reinforced concrete slab poured with integral ribs in two directions beneath it. You can use the add split line tool to add linear edges and to split the existing face of a roof or structural floor into smaller subregions. Waffle slab dwg full project for autocad designs cad. Parametric slab edge family for revit, with lots of useful adjustments. The reinforced concrete waffle slab ribbed slab cross section reinforcement detail comprises ribbing beams reinforcement, slab top wire mesh, waffles dimensioning, voids width and depth, slab thickness.
Share and download revit families, ask questions and share ideas in our forum and learn. Feasibility of structural design of members has been ensured under the provision of is. In addition, this slab can thermally activate by the integrating system. Click modify create floor boundary tab draw panel boundary line and then click pick walls to select the walls in your model. Find and download structural civil engineering construction details in dwg, dxf. Waffle slabs and raft slabs are both intended to moderate this ground movement to acceptable limits. I cant speak to how the slab s will react with the analysis programs. Concrete waffle slabs may be purchased and shipped to the construction site as prefabricated the most expensive type or precast sections, or poured onsite. They provide a very good form of construction where slab vibration is an issue, such as laboratories and hospitals. Technical note 5 slab does not adequately represent the mechanical properties of a stemmed floor system for analysis and design. Flat slab analysis design software for flat waffle slab.
Specify a foundation slab type from the type selector. See more ideas about waffle ceiling, architecture details and architecture design. In this video, i used beam system to model a waffle slab. Twoway joist concrete slab floor waffle slab system.
I made it up so if i need to work around an opening in the slab. Any idea of approximations or tips of how to build the model. The isotex cementbonded wood fibre panel system for highly thermoacoustic insulated horizontal or inclined structures consists of preassembled 100 cm x 20253039 panels of lengths up to 6. Use the download link from the settings to get the entire library.
Well insulated between joists reduces noise and ensures even. Pdf optimum design of reinforced concrete waffle slabs. Waffle moulds are a reusable formwork system for constructing twoway spanning ribbed concrete floors, which can achieve greater spans and use less concrete when compared to traditional flat slabs. How to fit more floors into less space construction. Slab heave occurs in a house slab when the ground moves more than your slab can stand. To reduce the labor intensive, this slab should be a parametric. Optimum design of reinforced concrete waffle slabs. If i use waffle slabs template itll make the model very difficult to. All purchased particulars can be modified in any cad software. Best way to deal with waffle slabs autodesk community revit. Because the waffle slab is constructed on the ground, when the waffle slab is finished it sits about 400mm higher than the surrounding ground. Ribbed or waffle slabs systems in the construction download.
The waffle slab has been considered as monolithically connected to band beams. I currently prefer the subtractive method because it looks more like an actual waffle slab and lets me control both where voids are placed and their. The top of ribbed slab is normally thin and the bottom grid lines are generally ribs which are laid perpendicular to each other with. The pods are the formwork for the waffle ribs and as such are not structural in the long term. Autocad structural detailing slab reinforcement dwg tertiary ghana. Waffle slab article about waffle slab by the free dictionary. Upon completion of the waffle slab house, the ground around the slab is built up by the builder to reduce the height of the slab above the surrounding ground. The system has a wafflelike pattern when viewed from below. Curtain panel pattern based details dimension downloads family felt stupid. They are either oneway spanning systems know n as ribbed slab or a twoway ribbed system known as a waffle slab. This is basically a cad dwg drawing with a typical waffle slab cross section reinforcement detail.
Waffle ceilings in your rentals and flips how to flip houses duration. Six steps to build a wafflemat foundation duration. The new autodesk structural precast extension for revit 2019. Cover your bases with flat slab analysis design flat slab software. Spec download skydome is a system of reusable formwork for the construction of bidirectional waffle slabs directly onsite. In this paper, the optimum design of reinforced concrete waffle slabs is sought using the simple genetic algorithm.
This type of reinforcement is common on concrete, wood and metal construction. Create a foundation slab by sketching or selecting the walls of the first level of the model. The waffle holes are formed by square shaped polystyrene pods. There are various approaches available for analyzing the waffle slab system.
To play up the good bones of the gutted space, arcturis designers ron johnson and brian waite had the unique waffle slab ceiling painted white to maximize height and reflectance and had the open office arranged around floortoceiling perimeter windows that look out onto the city. Waffle slab bd mackey consulting the revit geek blog. Ce tcc ribbed slab rei60 01 bruninghoffgruppe free bim. Jan 10, 2016 what is flat grid slab waffle slab system. Waffle slabs in russian construction terminology coffered caisson ceilings can be done in several ways. This new version of the precast for revit app now allows precast projects using lattice girder slabs to benefit from in addition to the automation the app delivers all of the advantages of the revit platform.
In present study some of these approaches are studied and compared with each other. Design of waffle slab without beams by direct design method 32 32 32 c 1 c 2 c 3 c 4 2 c. Fiberglass waffles slab forms mfg construction and water. The structure is very irregular and using the template for waffles slabs i.
Best practices for concrete slab design using revit structure. The base diameter of the stud is 20 mm and the overall height is 50 mm. Floor slab s39 isotex free bim object for archicad. Also, table 4, table 5 present the design bounds of each structure, respectively. Simple idea really, just create a four void blend cluster that could easily be placed in a thick floor slab to result in a waffle slab. Split a roof or structural floor revit products autodesk. The structural modeling used in most commercially available software, where stems are considered as disjointed from the topping slab does not deliver the advantages associated with waffleslab slab construction.
This void can be arrayed after you are sure it is cutting the slab correctly. The ribs are categorized as ribbed slab and waffle slab. Since it archicad is not revit, then we better use in this case, the library part. I cant speak to how the slabs will react with the analysis programs. A 120mmthick slab with a minimum rib thickness of 125 mm for continuous ribs is required to achieve a 2hour fire rating. Also, torsional stiffnesses will be completely different. Figure 1, figure 2 present a schematic view of a composite slab and a oneway waffle slab, respectively. Twoway joist concrete slab floor waffle slab system analysis and design design the concrete floor slab system shown below for an intermediate floor with partition weight of 50 psf, and unfactored live load of 100 psf. Oct 01, 2014 a couple of approaches to creating a waffle slab sorry for the audio, its a little soft. The structural modeling used in most commercially available software, where stems are considered as disjointed from the topping slab does not deliver the advantages associated with waffle slab slab construction. The slab doesnt normally crack, but if the movement in the slab is more than the brickwork andor plasterboard walls can tolerate. Download this free cad drawing of a diagrid slab for use in your construction detail cad drawings.
Due to the high formwork cost and degraded fire rating, this type of construction generally is not recommended. Flat slab cad drawing dwg cadblocksfree cad blocks free. Even if you are able to allow for cracking in the fem unlikely, the way an equivalent thickness flat slab cracks and its effect on stiffness will be completely different to a waffle slab which is effectively a t section. Free parametric bim models of structure in gdl, 3ds, dwg and. Norwegian slab solutions knauf insulation free bim. Optimum design of reinforced concrete waffle slabs alaa c. Ribbed and waffle slabs provide a lighter and stiffer slab than an equivalent flat slab, reducing the extent of foundations. Waffle slab or ribbed slab construction procedure and advantages.
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