Analysis of concrete slabs on grade civil engineering. 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. Design, analysis and comparison of underground rectangular water tank by using staad provi8 software 1issar kapadia, 2purav patel, 3nileshdholiya, 4nikunj patel 1,2,3research scholars, 4professor department of civil engineering, sardar patel college of engineering, bakrol abstract a water tank is a container for storing water. Posttensioned, reinforced concrete slab design software ram. Ground supported slabs are frequently designed with a single layer of reinforcing. Inducta software now includes the latest version of australian standards for design of concrete structures.
I looked at a design book, but it discussed heavy loads, wheel loads, column loads, or other special cases. Construction of slab on ground design elements the construction of slab on ground requires certain basic design elements. Bending welded wire reinforcement 1999, 12 pages a pictorial and descriptive publication on the fabrication of either inplant or on site bending of welded wire for column cages, beam baskets, and shear reinforcement for both cast in place and precastprestressed structural components. Posttensioned slab ongrade foundation 3d fem design software adaptsog product overview adaptsog is a complete threedimensional 3d finite element fem analysis and design tool for the analysis and design of posttensioned foundations slabs on expansive soils. Design floors and foundations reliably and efficiently, saving time and money, and overcoming the most common concerns you face as a designer. Concrete slab on grade design ksdphilippines structural 3 jun 08 02. Powered by the equivalent frame method of analysis and design per latest american aci 31814 and canadian csa a23. Background information on design theories is followed by discussion. Online concrete slab on grade analysis calculator for slab subjected to interior concentrated post or wheel loading assuming slab is reinforced for shrinkage and temperature only. Hence the moment capacity along the hogging yield lines is limited to the design cracking moment of the concrete. Construction of slabs on ground design considerations aci. Slabs is a program that can be used by structural engineers to perform a static analysis and design of reinforced concrete slab systems of any shape, including suspended slabs and slabs on ground. Slabonground posttensioned slabsonground provide a costefficient, highperformance solution for problems associated with groundsupported residential foundations on shrinkswell soils.
Air quality dispersion modeling alternative models. Concrete slab on grade analysis calculator for post or. Tm 580912 concrete floor slabs on grade subjected to heavy. Flooroffice, the complete and fully integrated software solution for hollowcore flooring and precast industries, supports all types of prefab floors. Specifically, a concrete slab on grade may be subjected to concentrated post or wheel loading. Slb is a software product for the analysis and design of suspended reinforced concrete slabs and slab on ground. Abhilash joy2 stuba engineering consultancy, palarivattom, ernaklulam, india abstract a multi storied industrial building is selected and is well analysed and designed. Slabongrade and posttensioned slab software adaptsog. Anderson, a leading consultant on the subject of reinforced concrete slabs on ground. Introduction concrete slabs on grade are a very common type of concrete construction.
Determining slab thickness starts with the purpose of the slab, its use and its loads, in addition to applicable standards. The entire design procedure is based on a working stress concept. A new method for designing floor slabs on grade due to the difficulty of applying simplified design methods, amongst them being the portland cement association pca and wire reinforcement institute wri methods. The sikafiber software for calculating fiber reinforced concrete slabs on grade is a powerful tool for optimizing designs. In many domestic and industrial buildings, a thick concrete slab supported on foundations or directly on the subsoil, is used to construct the ground floor. Concrete industrial ground floor design to tr34 4th. First designs to follow the brab report required foundations heavier even than the san antonio. Now, i just need to design my slab on grade for a relatively small uniformly distributed load live load 4. Design, analysis and comparison of underground rectangular. Concrete slab on grade thickness analysis for slab subjected to single wheel loading from vehicles with pneumatic tires per pca slab thickness design for industrial concrete floors on grade figure 3, page 5 job name. The calculation checks the design subject to point loads, line loads and uniformly distributed loads applied to a concrete slab using fabric, fibre or. Advantages of using posttensioning for your next slab on ground project. Single storey buildings are the largest sector of the uk structural steelwork market, representing upwards of 60% of total activity. Other basic assumptions used in the flexural analysis of the slab on grade worksheet are as follows.
Slab handles release scenarios including ground level and elevated jets, liquid pool evaporation, and instantaneous volume sources. Since the normal role of steel reinforcement hinges on the fact that the concrete must crack for the steel to perform, the designer is faced with a paradox. The compressive stresses resist the anticipated tension stresses induced by the soil movements, enhancing the performance over a nonprestressed foundation. It has been prepared to assist engineers, architects, speci. This condition may be encountered when a floor slab is constructed in an area of highly variable soil types or soil conditions. A principal requirement in the design of ground supported slabs is the avoidance of cracks on the upper surface.
Design of slabs on ground aci 360r06 by american concrete. Rtslab simple building construction slab rib software. I am trying to model a ground supported concrete floor in arsa 14. Develops the design methods in technical report 550 design of floors on ground. Concrete slab on grade analysis the engineering community. At amc engineering consultants, we use industryleading software to.
Punching is based on the approach for suspended slabs. Slab on ground design should result in sufficient strength to support without distressing the loads applied to the finished surface. These buildings are typically used for workshops, factories, industrial and distribution warehouses and retail and leisure. Load at interior and corner of slab distributed uniformly of a circular contact area. Tm 580912 concrete floor slabs on grade subjected to. There are five design procedures with examples developed by mr. We are committed to delivering uninterrupted software services worldwide during the covid19 crisis. This assumes that the slab thickness has previously been determined during conceptual design. Prestressing post tensioned concrete software design. The construction and design of concrete slabs on grade d. 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. Design the minimum slab thickness to support a fork lift specified below and storage racks specified below throughout. Competitive concrete solutions for industrial and residential buildings 33 bo malmberg design of fibre reinforced floors practical experiences. Concrete slab on grade thickness analysis for slab subjected.
Background information on design theories is followed by discussion of the types of slabs, soilsupport systems, loadings, and jointing. 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. Design a thickened slab to support the columns and. It addresses the planning, design, and detailing of slabs. I wasnt familiar with the document, so i wanted to check it out and see how the results compared to other design methods. A nonuniform subgrade may also result when a floor slab is located partially on a cut. Tr34 concrete slab on grade design for racking loads. Slabs on ground typically are designed as unreinforced sections. Economically design posttensioned and reinforced concrete floors including slabs, mats, and rafts, with exceptional visibility into compliance, efficiency, and practicality. Design methods are given for unreinforced concrete, reinforced concrete, shrinkagecompensating concrete, posttensioned concrete, fiberreinforced concrete slabsonground, and slabsonground in refrigerated buildings, followed by information on shrinkage and curling.
Other basic assumptions used in the flexural analysis of the slab. Improvements of the swedish concrete associations method for design of sfrc slabs on grade. The structural design of the concrete floor slab on ground is dominated by the subgrade conditions and the floor loadings. A set of general load tables for various types of loading on industrial slabs is provided and a system of loading categories proposed. More detailed advice on determining design life, actions, material properties, methods of analysis, minimum concrete cover for durability and control of crack widths can be found in chapter 2 of how to design concrete structures using eurocode 2. The publication has derivations of equations and design examples that show how as steel area increases more crack width control is gained. 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. Then for the given parameters, the slab flexural, bearing, and shear stresses are checked, the estimated crack width is determined, the minimum required. Choosing design methods for industrial floor slabs by boyd c. Preconslab is a software tool to design and analyze prestressed or reinforced concrete flooring systems. The result is a lightly reinforced slab designed to offset the effects of temperature and shrinkage of the concrete. From framing layout to detail drawing production, safe integrates every aspect of the engineering design process in one easy and intuitive environment. Asce, secb course content slab on grades construction. Auto tendons for preliminary design perform a quick and accurate preliminary design check considering tendons.
This document presents information on the design of slabsonground, primarily industrial floors. Safe is the ultimate tool for designing concrete floor and foundation systems. The new version of the fem structural slab design software includes adaptations to. Sorry if this subject has allready been discussed previously. Such slabs are referred to as membrane slabs, floating slabs, or. Optimize your fiberreinforced concrete slab on grade. Less concrete and steel are needed for the same structural capacity and the slab stiffness is increased so that the slab is better able to resist bending caused by differential soil movements. Concrete slab design software economically design posttensioned and reinforced concrete floors including slabs, mats, and rafts, with exceptional visibility into compliance, efficiency, and practicality.
The report addresses the planning, design, and detailing of slabs. Scope this guide covers the design, construction and speci. Ce 437537, fall 2002 slab ongrade example design info 1 8 design the thickness for a slab ongrade concrete slab in a warehouse. Design of slabs on ground aci 360r06 by american concrete institute slab thickness design for industrial concrete floors on grade is195. Grdslab concrete slab on grade analysis spreadsheet. How to design an ideal floor for warehouse and logistics. Download aci 360r10 guide to design of slabsonground. Guide to design of slabs on ground reported by aci committee 360 aci 360r10 this guide presents information on the design of slabs on ground, primarily industrial floors.
A slab is ground bearing if it rests directly on the foundation, otherwise the slab is. Design of groundsupported concrete industrial floor slabs. This paper presents a method of design and other issues related to industrial floors. I have a two storey building, and my second floor and roof loads are transmitted to column footings below my slab on grade. You can perform reinforcement designs, long term deflections, beam designs, reactions, automatic two way action, effective moment of inertia, and. Aci 360, design of slabs ongrade, refers to this as a type b slab. Flat slab analysis and design free version download for pc. Provision is reinforcingmade in the design manual for non uniform subgrade support of rigid floor slabs. Calculators for structural engineers, construction professionals and steel building specifiers. Prestressing post tensioned concrete software design workshop. Jayasidhan1 department of civil engineering, sset, mahatma gandhi university, kottayam, india mr. Anderson key factors to consider include type of slab construction and loading conditions industrial floor designs usually are based on one or more of the five design methods. Ce 437537, fall 2002 slabongrade example design info 1 8. Analysis of industrial slabsonground bending finite element.
Complete and integrated software for precast flooring. Analysis of industrial slabsonground free ebook download as pdf. Nov 29, 2007 slab on ground design should result in sufficient strength to support without distressing the loads applied to the finished surface. Although the term also includes park ing lot slabs and paving surfaces, these are not specific ally covered in this report. Concrete slab on grade thickness analysis for slab subjected to concentrated post loading for k 100 pci per pca slab thickness design for industrial concrete floors on grade figure 7b, page 10. The pti journal is a platform for publishing state of the art research, design, repair, and construction advances of posttensioned buildings, bridges, slabs on ground, rock and soil anchors, and infrastructure with the engineering and construction industry. Decide the imposed live load and other loads such as. Slab thickness design for industrial concrete floors on grade is195. Refer to aci 223 for procedures for the design and construction of shrinkagecompensating concrete slabs on ground.
Grdslab concrete slab on grade analysis excel spreadsheet. Tr 3410 suggests a design value of 15% load transfer at a width of 1. Sikafiber concrete admixture concrete industrial flooring flooring factory. In slab on ground design, slab thickness is a function of the modulus of rupture of the concrete. The design procedure separately includes determining thickness of slab under wall load. Residential slabonground design stiffened raft slab, stiffened raft slab with deep edge. Design of slabs on ground aci 360r06 by american concrete institute, 2006 4. Concrete slab on grade analysis calculator for post or wheel. Each issue contains technical papers, case studies, industry news, and occasionally discussions, pt treasures, etc. Flat slab analysis and design designs beamless concrete slab floors flat slab or waffle slab in accordance with aci 318. Adaptpt software for the design, analysis, and investigation of prestressed concrete beams, slabs and floor systems.
A2 slab thickness design by wri method a3 design examples using coe charts a4 slab design using posttensioning a5shrinkagecompensatingconcreteexamples chapter lintroduction l. A different post here a couple days ago referenced slab design in accordance with the eurocode and tr34. Sep 26, 2018 this video demonstrates using tekla tedds for concrete industrial ground floor design using the technical report 34 guide to design and construction fourth edition. Reinforced concrete slab and beam design software adaptrc 2017 product overview an easytouse and learn software for the design, analysis, and investigation of reinforced nonprestressed concrete beams, beam frames, slabs and floor systems a must have production tool in every structural engineering office. This video demonstrates using tekla tedds for concrete industrial ground floor design using the technical report 34 guide to design and construction fourth edition. Posttensioned slab on grade foundation 3d fem design software adaptsog product overview adaptsog is a complete threedimensional 3d finite element fem analysis and design tool for the analysis and design of posttensioned foundations slabs on expansive soils.
Heavy loads in building s such as warehouses include moving load s, stationary live loads, and wall loads. Floor slabs can range from a simple residential basement slab to a heavyduty industrial floor. The software is for the analysis of the soil structure interaction of footing on reactive or expansive soils. Industrial slabs on grade are generally considered to be nonstructural elements. The use of the general load tables is illustrated by examples. Reinforced concrete slab and beam design software adaptrc. Slab is considered infinite for center loading and semiinfinite for edge loading. 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.
Full contact support between the slab and foundation. This guide presents information on the design of slabs on ground, primarily industrial floors. Concrete slab on grade thickness analysis for slab. Concrete slab on grade design structural engineering. Program description this is a spreadsheet program written in msexcel for the purpose of analysis of concrete slabs on grade. The construction and design of concrete slabs on grade. The design procedure includes determining slab thickness based on moving live loads and then checking adequacy of slab thickness for stationary live load. The design of suspended floors should conform to requirements of aci 318 and aci 421. 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. If consolidation of plastic soils is determined to be a potential problem a suspended slab may be the only effective solution, in which. Adaptsog software for the design of posttensioned slabs on grade foundations. These slabs are generally classified as ground bearing or suspended.
The pca and wri slab on grade design methods for industrial floors led to a design for concrete fatigue, even though 2. Concrete slab and foundation design software safe important message. A new method for designing floor slabs on grade due to the. The calculation checks the design subject to point loads, line loads and uniformly distributed loads applied to a concrete slab using fabric, fibre or fibre and bar reinforcement. Background information on design theories is followed by discussion of the types of slabs. Safe is the ultimate tool for structural engineers designing concrete floor slabs, and foundation systems.
A slab is ground bearing if it rests directly on the foundation, otherwise the slab is suspended. First designs to follow the brab report required foun. It uses finite element analysis to analyse and design slabs of any shape with twoway action automatically considered. These design elements must be enlisted and added in the contract documents by the designer in charge before asking for a bidding. Concrete industrial ground floor design to tr34 4th edition.
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