The slab has to carry a distributed permanent action of 1. Design of slabson ground aci 360r06 by american concrete institute slab thickness design for industrial concrete floors on grade is195. Grdslab concrete slab on grade analysis spreadsheet. The design procedure set forth in that publication had at that time been in use by the author for about 15 years.
The design of ground supported concrete industrial floor slabs chandler, j. Specifically, a concrete slab on grade may be subjected to concentrated post or wheel loading. Simply supported one way slab a rectangular reinforced concrete slab is simplysupported on two masonry walls 250 mm thick and 3. A ground supported slab is constructed directly onto a subbase, where uniform support from the ground is assumed. As the floor type name implies, any loads imposed on the concrete floor are carried directly and fairly uniformly by the ground under the floor. Reinforced concrete design 1 design of slab examples and. Reinforced flat slab design spreadsheet flat slab system is an important division of concrete floor system. Itn 11 design of groundsupported concrete industrial floor slabs publication year 1988 document status latest version of document. Ground supported floors ground supported concrete floors are used in many types of building, ranging from simple houses through to schools, factories, and very large warehouses.
It addresses the planning, design, and detailing of slabs. Analysis of concrete slabs on grade spreadsheetdownload free. You can design a single span simply supported, fixed or cantilever or many continuous spans. 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. Aug 23, 2017 model and design slab on ground, end bearing piles and friction piles using the inducta software. Formerly known as the cement and concrete association, the british cement association is the trade and research organisation. Concrete slab on grade floor in warehouse with sikafiber fibers. In contrast the conventional slabonground is floating and in theory is supported entirely by the soil upon which it is poured.
Soil investigations it is considered imperative that a soils investigation be made on any site on which a design is to prepared. The design of concrete groundsupported concrete industrial floor slabs. Design and detailing of reinforced concrete beams and slabs. Concrete industrial ground floors tr34 is recognised globally as a leading publication giving guidance on many of the key aspects of concrete industrial ground floors. The article presents detailed results of the experiment made and advanced numerical modelling based on nonlinear analysis and application of fractureplastic model. The article handles potential approaches to design and determination of total load capacity of foundation slabs and floors. This enables to obtain the required design criteria and provide safety for the. Since the books initial publication in 1980, it has been used by engineers and contractors to successfully design and construct hundreds of thousands of posttensioned slabs on ground.
Ground supported floor floor supported on original or improved ground, where universal uniform support from the ground is assumed. The variations presented later in this paper have been derived empirically. A flat slab is a reinforced concrete slab supported directly by concrete columns without the. Technical information ground supported slabs are not rafts and do not have the ability to span over soft zones or poorquality subsoil. At the time of the code change before 2005, there was discussion about adding a definition for posttensioned concrete slabs on expansive soils. As the floor type name implies, any loads imposed on the concrete floor are carried directly and fairly uniformly by. Reinforced concrete design 1 design of slab examples. Slab on ground posttensioned slabson ground provide a costefficient, highperformance solution for problems associated with ground supported residential foundations on shrinkswell soils. Tf 700r07 page 2 residential slabonground construction. The article presents detailed results of the experiment made and advanced numerical. The compressive stresses resist the anticipated tension stresses induced by the soil movements, enhancing the performance over a nonprestressed foundation. The primary design issues for stiffened slabs on grade are the sizing of the beams that stiffened the slab and the spacing of the beams. The first construction step, after determining the floor level of the house, is to run up footing walls in the usual manner, and build piers to the same height of solid concrete block on 6 to 8 foot centers in each. Dec 15, 2017 analysis of concrete slabs on grade spreadsheet grdslab is a spreadsheet program written in msexcel for the purpose of analysis of concrete slabs on grade.
The slab itself is usually set at a thickness of 0. The research is focused on punching shear failure of reinforced ground supported slab. E2 extension to appendix b, thickness design of a groundsupported floor slab. Crcm is an innovative method of building structures resisting natural disasters, is the result several years of exploration from rammed earth, to prefabrication, masonry concrete with 7,500 units in mexico city where. The british cement association merged with the quarry products association and the concrete centre to form the mineral products association and is. Design of slab examples and tutorials by sharifah maszura syed mohsin example 1. Crcm is an innovative method of building structures resisting natural disasters, is the result several years of exploration from rammed earth, to prefabrication, masonry concrete. Pdf punching shear failure of concrete ground supported slab. Typical industrial loading systems are described and several refinements are introduced. The new 1996 edition reflects the industrys current knowledge of posttensioned ground supported slabs and is easier for design professionals to use. Design with steel fabric reinforcement 103 e1 supplement to chapter 9, strength and serviceability of slabs 103 e2 extension to appendix b, thickness design of a ground supported floor slab 103 e2. Model slab on ground using either the winkler model or soil structure interaction. Sample specification download sample specifications and see what.
Concrete floor slabs on grade are subjected to a varie ty of loads and loading conditions. Concrete slab resting on grade containing steel reinforcement which consists of either a welded wire fabric or deformed reinforcing steel bars. The use of the general load tables is illustrated by. For a slab with a thickness of 100mm lets say that the other measurements are 6m x 6m, if that is of any importance, how shoul.
Concrete slabs supported on soil are analysed with the model proposed. The result is a lightly reinforced slab designed to offset the effects of temperature and shrinkage of the concrete. The new 1996 edition reflects the industrys current knowledge of posttensioned groundsupported slabs and is easier for design professionals to use. Ground supported slabs are frequently designed with a single layer of reinforcing. Guidance on the design and construction of ground supported concrete floors was originally developed and. Adaptfloor pro is backed by our unparalleled support team, providing. This book develops the design methods set out in the associations technical report 550, design of floors on ground. Slabonground posttensioned slabsonground provide a costefficient, highperformance solution for problems associated with groundsupported residential foundations on shrinkswell soils.
Design of groundsupported concrete industrial floor slabs. Concrete beam, column, slab and foundation design in the axisvm structural analysis and design software. A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. Sorry if this subject has allready been discussed previously. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems.
After this publication, it was subsequently adopted by the uniform building code ubc as. Building structure building foundationsground floors publisher history. Model and design slab on ground, end bearing piles and friction piles using the inducta software. This guide presents information on the design of slabson ground, primarily industrial floors. Tm 580912 concrete floor slabs on grade subjected to heavy. Develops the design methods in technical report 550 design of floors on ground. A2slab thickness design by wri method a3design examples using coe charts a4slab design using posttensioning a5shrinkagecompensatingconcreteexamples chapter lintroduction l. Oct 11, 2016 ground slab and elastic foundation hi guys, im working on a gound slab design and for any reason i cant see forces, moments, stress etc. The design procedure includes determini ng slab thickness based. Itn 11 design of groundsupported concrete industrial floor. Optimize your fiberreinforced concrete slab on grade.
Building structure building foundations ground floors publisher history. The thickness of a floor slab must be determined early in design because the weight of the. Concrete floor slabs on grade are subjected to a variety of loads and loading conditions. Chapter 10fiberreinforced concrete slabsonground, p. Pdf in 2003, the third edition of concrete society technical report 34 1 was. Safety of wire mesh reinforced concrete slabs and steel fibre reinforced concrete slabs is discussed. The design of ground supported concrete industrial floor slabs. Itn 11 design of groundsupported concrete industrial. Interim technical note 11, mpa cement, camberley, april 1988. Steelreinforced slabs, typically between 100 and 500 mm thick, are most often used to construct floors and ceilings, while thinner mud slabs may be used for exterior paving see below. Punching shear failure of concrete ground supported slab. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design. Even with the best slab designs and proper construction, however, it is unrealistic.
Oct 05, 2019 a flat slab is a reinforced concrete slab supported directly by concrete columns without the use of beams. Such slabs are referred to as membrane slabs, floating slabs, or filler slabs and range in thickness from as little as 4 to 8 depending on the supported loads. Is a slabonground that is supported by piles still considered a slabonground by aci. In contrast the conventional slab on ground is floating and in theory is supported entirely by the soil upon which it is poured.
Pdf fabricreinforced concrete ground slabs and concrete. With some limitations, reinforcement for slabs can be sized using the subgrade drag theory in order to increase the spacing of control or construction joints. Technical information groundsupported slabs are not rafts and do not have the ability to span over soft zones or poorquality subsoil. The design of concrete ground supported concrete industrial floor slabs. The new and improved slabonground design manual concrete. A2 slab thickness design by wri method a3 design examples using coe charts a4 slab design using posttensioning a5shrinkagecompensatingconcreteexamples chapter lintroduction l. Analysis of concrete slabs on grade spreadsheet grdslab is a spreadsheet program written in msexcel for the purpose of analysis of concrete slabs on grade. Safe is the ultimate tool for structural engineers designing concrete floor slabs, and foundation systems.
A comparison with conventional design methods is performed. Design with steel fabric reinforcement 103 e1 supplement to chapter 9, strength and serviceability of slabs 103 e2 extension to appendix b, thickness design of a groundsupported floor slab 103 e2. Ground supported floors groundsupported concrete floors are used in many types of building, ranging from simple houses through to schools, factories, and very large warehouses. Guidance on the design and construction of groundsupported concrete floors was originally developed and. The benefits of using flat slab construction are becoming increasingly recognized. Concrete slab rest ing on grade cont aining steel reinforcement which consists of either a welded wire fabric or deformed reinforcing steel bars. Tm 580912 concrete floor slabs on grade subjected to. I am trying to model a ground supported concrete floor in arsa 14. This is the fourth edition of concrete society technical report 34. The design of groundsupported concrete industrial floor. Supported by walls a 0 no beams for beam supported slabs a slab on ground that is supported by piles still considered a slab on ground by aci. The modern ground bearing slab will normally be formed from a minimum of 150mm thick reinforced concrete, resting on a bed of 150mm minimum thick hardcore with a d. The design procedure includes determining slab thickness based.
As a standalone program, it analyzes and designs individual floor levels one at a. Powered by a sophisticated fem solver increasing capacity and substantially speeding up solution for large and complex models, spmats v8. A set of general load tables for various types of loading on industrial slabs is provided and a system of loading categories proposed. The design of groundsupported concrete industrial floor slabs chandler, j. Reinforced and posttensioned concrete slab design software. Design of slabsonground aci 360r06 by american concrete institute slab thickness design for industrial concrete floors on grade is195. Crosssections can include a combination of rectangular, i, t and lsections, and spans can have constant or tapered sections. Background information on design theories is followed by discussion of the types of slabs, soilsupport systems, loadings, and jointing. In many domestic and industrial buildings, a thick concrete slab supported on.
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