Ground bearing concrete floors, industrial concrete hardstandings and concrete highway pavements have not, in the past, been perceived as a single type of structural element and their construction has taken place independently of each other. Design of substructure and ground bearing floors shall ensure that loads are supported and transferred to foundations, or to the ground, without undue movement studies of the site, carried out in accordance with chapter 4. Fabricreinforced concrete ground slabs and concrete. Then for the given parameters, the slab flexural, bearing, and shear stresses are checked, the estimated crack width is determined, the minimum required distribution reinforcing is determined, and the bearing stress on the dowels at construction joints is checked. Whether the project is local or overseas, design codes from around the globe are available for reinforced concrete and posttensioned slab design.
Reinforced concrete ground floor slab stands directly on the subsoil or foundation is called ground bearing slab whereas the other slabs found in the building are known as suspended slabs. Rc slab wizard support robot structural analysis products. Reinforced concrete structural software includes programs for column design. Using dxf data a model of the ground floor slab was created and then subsequently modified to create the first and second floor models. List of free software for structural engineers and connected professions. Twoway flat plate concrete slab floor analysis and design aci 31814. I need my levels to be at top of slab as is the industry standard. Exercise 8 part 1 defining and analyzing a concrete floor robot structural analysis duration. Correct way to apply supports for a ground bearing base slab.
The concrete floor slab itself provides structural support for floor loads and suitable backup for floor coverings and finishes. Peikko design tools include design software, 3d components for modeling programs, installation instructions, technical manuals and product approvals of peikkos products. Analysis and design of reinforced concrete and steel. More detailed advice on determining design life, actions, material properties, methods of analysis, minimum concrete cover for durability and control of crack widths. Slab design construction of slabs on ground design considerations based on aci. Design of slabson ground aci 360r06 by american concrete institute slab thickness design for industrial concrete floors on grade is195. Fabricreinforced concrete ground slabs and concrete society. How to design an ideal floor for warehouse and logistics. Floors ctr wall ld thickness calculate the required thickness of a concrete slab ongrade floor to support a wall load at the centerinterior or on a joint. Reinforced concrete ground floor slabs offer huge benefits to any building which range from endurance against internal tensile forces, thermal comfort. It brought together guidance for all types of industrial ground slab in one publication and also introduced a new design method for fabricreinforced. Reinforced concrete ground floor slab stands directly on the subsoil or foundation is called groundbearing slab whereas the other slabs found in the building are known as suspended slabs. Harvey, lecturer department of civil engineering, queen mary college, london, u.
Through new design methods, such as the ultimate limit state analytical approach and costeffective steelfree design, along with such topics as materials, construction, loading and specifications, ground bearing concrete slabs examines and elucidates on one of the major areas of structural engineering. Because the concrete slab on ground is assumed to be continually supported, an adequate soilsupport system is critical to the slabs performance. First designs to follow the brab report required foundations heavier even than the san antonio. This results in cracking and deformation, potentially leading to structural failure of any members attached to the floor, such as wall studs. Safe is the ultimate tool for designing concrete floor. Calculate the maximum wall load that the maximum wall load that a concrete slab ongrade floor can support at a joint or at the centerinterior of the slab. Grdslab concrete slab on grade analysis spreadsheet. Aci committees 360, design of slabs on ground, and 302, construction of concrete floors, have been at the forefront of the effort to provide the industry with the tools to produce slabs that are flat and level, with a densely finished surface, stable joints, and limited cracking while being capable of supporting applied loads. Sixinch slab on grade with 12 bars 6 on center both directions for temperature steel.
Reactions, deflections and ultimate moments were obtained for the floor slab and in this situation the results obtained enabled the concrete slab thickness to be reduced by 50mm. In 2003, the third edition of concrete society technical report 34 1 was published. Design of slabsonground reported by aci committee 360 aci 360r06. These design elements must be enlisted and added in the contract documents by the designer in charge before asking for a bidding. Downloadable detail drawing showing a ground bearing slab with render walls in timber frame construction. L1084 32 abingdon villas page 35 of 70 pringuerjames consulting engineers ltd. Insulation for ground floors designing buildings wiki. Constructing a slab over shrinkable clay countervail structural 16 feb 11 04. Dec 07, 2017 this video demonstrates using tekla tedds for concrete industrial ground floor design using the technical report 34 guide to design and construction fourth edition. Concrete floor slabs on grade are subjected to a variety of loads and loading conditions. This manual p rescribes the criteria for the design of concrete floor slabs on grade in buildings for heavy loads and is applicable to all elements responsible for military construction.
For use in a building regulations application or as a general construction detail. Tm 580912 concrete floor slabs on grade subjected to heavy. The slab may be of uniform or variable thickness, and it may include. Packard portland cement association, 1976 concrete floor slabs on grade subjected to heavy loads army technical manual tm 580912, air force manual afm 883, chapter 15 1987. Do the following to define a wall supporting the slab. Here are my minimum requirements for a typical slab on grade. Our design was for a 150 thk ground bearing slab sitting on 1. Floor slab if a floor slab is selected, the following two tabs are provided in the dialog. The structural design of the concrete floor slab onground is dominated by the subgrade conditions and the floor loadings. If a floor slab is selected, the following two tabs are provided in the dialog. Design of slabs on ground reported by aci committee 360 aci 360r06. Ground bearing floor slabs are most commonly found within industrial installations, such as warehouses or factories. Ground bearing slab with render walls detail drawing.
This assumes that the slab thickness has previously been determined during conceptual design. When used with peikkos modern design tools, they improve competitiveness and efficiency for your business. Abstract consideration is given to the analysis and design of ground bearing warehouse slabs, in particular the analysis of the slab of a new warehouse. Grdslab concrete slab on grade analysis spreadsheet cesdb. With the new sikafiber software, sika provides a tool for designing fiber reinforced concrete frc slabs on grade reinforced using polypropylene or steel. Constructing a slab over shrinkable clay structural. For ground bearing slabs, it is important to design the slab around the type of soil, since some soils such as clay are too dynamic to support a slab consistently across its entire area. Reinforced concrete slab design and detailing guide is456. Equivalent tensile stress design appendix 5examples using shrinkagecompensating concrete, p. Slabs on ground typically are designed as unreinforced sections. The design procedure separately includes determining thickness of slab under wall load. Nevertheless, they can also be installed in all types of structures where there is no basement, provided that ground conditions are suitable.
Walls do the following to define a wall supporting the slab. Optum mp enables you to optimize your design and use the minimal amount of rebar and concrete. Precast concrete bearing wall panel design alternative design method using aci 31811. Details of underfloor and floor edge insulation and cavity insulation, where relevant if information is unavailable request its provision. Does the ground bearing floor slab align with the project summary sheet and foundation design. Calculate the required thickness of a concrete slabongrade for a warehouse floor. The two design options are a ground bearing slab, or a pile supported suspended slab. Mar 15, 2015 exercise 8 part 1 defining and analyzing a concrete floor robot structural analysis duration. It was actually the widespread use of the posttensioned slab on ground which induced this interest in design procedure and in many studies of reported slab failures. Safe is the ultimate tool for structural engineers designing concrete floor slabs, and foundation systems. Chandlers tr550 design of floors on ground 3, gave additional guidance on calculating slab thickness and was later refined by bca interim technical note 4, which introduced.
The design procedure includes determining slab thickness based on moving live loads and then checking adequacy of slab thickness for stationary live load. Grdslab is a spreadsheet program written in msexcel for the purpose of. K solid ground floor to consist of 150mm consolidated wellrammed hardcore. Optum mp free concrete slab design software from optum ce. Ground bearing floors can include insulation either below or above the concrete slab, the choice the designer makes will have an impact on the temperatures inside the building, as follows. On the support tab you define the support conditions of a defined slab. Fabricreinforced concrete ground slabs and concrete society technical report tr343alasdair n beal, thomasons. Following are the rcc slab design and detailing guidelines. If you want your software and your website to be included in this list then email me the address. The analysis and design follow the equivalent frame analysis method of the aci code, which considers a onebay wide strip of the floor system as a continuous frame. The moisture protection is provided for the floor over the.
Only fully functional software is listed, this means that time limited versions demo and trials are not included. Ground supported slabs bearing directly onto a subbase, typically mesh reinforced and with formed joints at nominal 40m ctrs and sawn restrainedmovement joints at nominal 6m centres. Provide 100mm st2 or gen2 ground bearing slab concrete mix to conform to bs 85002 over a 1200mm gauge polythene dpm, dpm to be lapped in with dpc in walls. Yes no continues on reverse ground bearing floor slabs general is the proposed slab a minimum of 100mm thick. Nevertheless, they can also be installed in all types of structures where there is no basement, provided that ground conditions are. In one practical, yet comprehensive volume, it integrates the three crucial phases in the development of ground bearing concrete slabs design, specification and. Nuno teixeira robot structural analysis 28,467 views. Tm 580912 concrete floor slabs on grade subjected to. This video demonstrates using tekla tedds for concrete industrial ground floor design using the technical report 34 guide to design and construction fourth edition. Increase your efficiency with bidirectional links to the industry leading bim products. I have a project with 8 inch concrete floors and 2 inch finish. Correct way to apply supports for a ground bearing base slab hi everyone, i have been working on a project recently and have become a little confused on the correct way to model support for a ground bearing slab if anyone can shed some light on the following for me it.
The recommendations derived from these and other studies vary from extremely light to extremely heavy. Select a wall width and a support type pinned or fixed. Optimize your fiberreinforced concrete slab on grade. We will consider and advise on any ground floor slab design, but generally they would fall into one of the following categories. The construction of slab on ground requires certain basic design elements. A procedure for carrying out the detailed design of slabs is shown in table 1 below. Preliminary design nomogram 150 ground bearing concrete slabs in the third quadrant, the moment of resistance of steel fibre reinforced c3037 concrete with an equivalent bending strength fct,eq,i5o 270 nmm can be investigated in the fourth quadrant, the reinforcement required can be found. Correct way to apply supports for a ground bearing base slab hi everyone, i have been working on a project recently and have become a little confused on the correct way to model support for a ground bearing slab if anyone can shed some light on the following for me it would be greatly appreciated. Building regs 4 plans building regulations specifications. Free design tools to optimize structural designs use our powerful software every day to make your work faster, easier and more reliable. Reinforced concrete slab design and detailing guidelines for depth of slab, loads on slab, reinforcement guide for oneway and twoway slabs as per is 456.
Program for analysis and design of reinforced concrete and steel structures made. Calculate the allowable deflection for a fiber reinforced concrete slabongrade floor. Concrete slab on grade analysis the engineering community. Slabonground design should result in sufficient strength to support without distressing the loads applied to the finished surface. If the insulation is installed below the slab, the thermal capacity of the building is increased, helping to maintain steady internal temperatures. Studies of the site, carried out in accordance with chapter 4. Estimate the limit load or bearing capacity in a single step. Solid floor insulation over slab to meet min u value required of 0. Powered by the equivalent frame method of analysis and design per latest american aci 31814 and canadian csa a23. Grdslab concrete slab on grade analysis excel spreadsheet. Concrete industrial ground floor design to tr34 4th.
If consolidation of plastic soils is determined to be a potential problem a suspended slab may be the only effective solution, in which. A typical base floor slab where the design criteria include controlling moisture migration and water vapor transmission into the interior space can be referred to as a waterproof. Ground bearing concrete slabs has been specifically written to break down the walls that have arisen between these three areas and focus on the issues that are common to them all. The following is guidance from the planning portal about making a full plans application. Flat slab analysis and design free version download for pc. Enter coordinates of the beginning and end of a support or indicate the points graphically in a drawing. Concrete industrial ground floor design to tr34 4th edition. For many years, the uk bible for designing concrete groundbearing slabs was colin deacons concrete ground floors. Heavy loads in building s such as warehouses include moving load s, stationary live loads, and wall loads.
Rcc slab construction process concrete slab construction. Flat slab analysis and design designs beamless concrete slab floors flat slab or waffle slab in accordance with aci 318. Peikkos widely approved, tested products accelerate the construction process, making it faster, easier, and safer. Because the concrete slab on ground is assumed to be continually supported, an adequate soilsupport system is critical to the slab s performance. The structural design of the concrete floor slab on ground is dominated by the subgrade conditions and the floor loadings. Design of slabs on ground aci 360r06 by american concrete institute slab thickness design for industrial concrete floors on grade is195.
The calculation checks the design subject to point loads, line loads and uniformly distributed loads applied to a concrete slab using fabric, fibre or. Then for the given parameters, the slab flexural, bearing, and shear stresses are. For groundbearing slabs, it is important to design the slab around the type of soil, since some soils such as clay are too dynamic to support a slab consistently across its entire area. It is assumed that 40% of the factored axial load is sustained. Mar, 2019 slab on grade concrete slab on grade analysis for concentrated post or wheel loading. Calculate the california bearing ratio, cbr, from the modulus of soil reaction, k. Enter coordinates of the beginning and end of a support or indicate.
Design of slabsonground aci 360r06 by american concrete institute. Design of slabsonground aci 360r06 by american concrete institute slab thickness design for industrial concrete floors on grade is195. Abstract consideration is given to the analysis and design of ground bearing warehouse slabs, in particular the analysis of the slab of a new warehouse whose performance has been monitored. This is in spite of their obvious commonality in the areas of design, materials, geotechnical appreciation and construction. The two design options are a groundbearing slab, or a pile supported suspended slab. Construction of slabs on ground design considerations aci.
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