Twoway slabs have two way bending unlike oneway slab. The flat slab system of construction is one in which the beam is used in the conventional methods of construction done away with the directly rests on column. Flat slabs carried on columns and edge beams or walls with no interior beams slabs may be solid of uniform thickness or ribbed with ribs running in one or two directions. However, there are some pitfalls to avoid, that often catch out the unwary. Analysis and design of flat slab and grid slab and their cost ijera. Analysis and design of slabs two way civil engineers pk.
Also explore the seminar topics paper on flat slab with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year 2015 2016. Comparative study of seismic behavior of flat slab and. Moment coefficient method simplified method of calculating moments and shear. Analyze and design flat slab or waffle slab floors. The materials to be used are grade c25 concrete and grade 500 reinforcement. Flat slab flat slab are also known as beamless slab, is a type of slab in which the flooring slab is directly supported on columns without the agency of beam or girders.
Punching shear analysis of reinforced concrete flat plates. Flat plate concrete floor system does not use beams between columns or. Flat slab structures are the best solution for high rise. Nowadays flat slabs are used in most of the building because of its advantages. Grdslab concrete slab on grade analysis spreadsheet. The finite element method is commonly used to design the reinforcement in concrete slabs. 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. On the other hand, finite element analysis using computer programs can be used. Flat slabs can be analysed using the frame equivalent method, or by using the simplified analysis method which involves the use of coefficients. Analysis of posttensioned flat slab by using safe shriraj s. Initially, the reinforced concrete flat slabs had drops, and columns with capitals, and. Analysis of twoway slabs by coefficient method the determination of exact moments in twoway slabs with various support conditions is mathematically formidable and not suited to design practice. Flat slab and grid slab has been analyzed by staad pro. Department of mechanics, materials and structures english.
That is, the concentrated post or wheel load is assumed to be well away from a free slab edge or corner. Explore flat slab with free download of seminar report and ppt in pdf and doc format. Interpreting the slab analysis result using safe program is the last stage to consider in the design of the slab using safe. Page 14 example1 try5 9242008 flat slab analysis and design job. The beams reduce the available net clear ceiling height. Flat slab analysis and design free version download for pc. Cantilever slabs are common features in buildings due to the need to have bigger spaces at upper floors. Flat slab types of flat slab design and its advantages flat slab is a reinforced concrete slab supported directly by concrete columns without the use of beams. Flat slabs may have drop panels at columns and columns may have capitals. Analysis and deflections of reinforced concrete flat slabs. But, till date the analysis of flatslab systems has been a problem due to its.
Flat slab analysis and design designs beamless concrete slab floors flat slab or waffle slab in accordance with aci 318. It was observed that the flat slab with drop is more economical than flat slab. Oneway and twoway slabs university of asia pacific. Numerical analysis of voided flat slab by sabeedha t c, dr b. Seismic analysis of flat slab by using etabs ijitee. Pdf analysis of flat slab structures subjected to combined. Analysis and design of flat slab with various shapes. Pdf an equivalent frame method based on equivalent beams and unmodified columns, developed for sidesway analysis of flat plate. Flat slab is a reinforced concrete slab which has no beams and is directly. Flat slabs without drops thickened areas of slab around the columns to resist punching shear can be built faster because formwork is simplified and minimized, and rapid turnaround can be achieved using a combination of early striking2 and flying systems. Csi etabs 2016flat slab design, strip design and punching. Later on, hong guan 2009 applied the nonlinear layered finite element method lfem. This is the procedure where the structural designer will interpret hisher design and reflect it in a structural plan. Slabs and flat slabs lecture 5 19 th october 2016 contents lecture 5 designing for shear in slabs including punching shear detailing solid slabs flat slab design includes flexure worked example exercise punching shear.
Twoway flat plate concrete floor system analysis and design the concrete floor slab system shown below is for an intermediate floor to be designed considering partition weight 20 psf, and unfactored live load 40 psf. Twoway flat plate concrete floor system analysis and design. Yield line analysis is an analysis approach for determining the ultimate load capacity of reinforced concrete slabs and was pioneered by k. Flat slab design in tekla structural designer youtube. Moreover, the design and construction details of this parking garage are used to illustrate code requirements, flat slab analysis, design details, and the construction of gfrprc flat slabs. Analysis of slabs the objective is to find the following internal forces by analysis. These materials are originally located at different websites. Civil engineering for construction informatics csi etabs 2016 flat slab design, strip design and punching shear check please have a look in this video thank subscribe our youtube.
The best flat slab analysis, design and detailing related pdf and slides are provided here altogether. Pdf analysis and design of flat slab and grid slab and. A simplified version of the later ap proach, the socalled the bilinear method, is given by the. Recent earthquakes in which many concrete structures have been severely. Analysis of flat sanalysis of flat sllabab moment division example 6000 6000 6000 6000 6000 5000 layout of building 7000 5000 a floor slab in a building where stability is provided by shear walls in one direction ns. Flat slab analysis, design and detailing pdf flat slab system is an important division of concrete floor system. Flat slab analysis, design and detailing pdf civil. Recommendations for finite element analysis for the design. Pdf analysis and design of flat slab and grid slab and their.
Analysis of the flat slab and grid slab has been done both manually by is 4562000 and by using software also. Flat slab types of flat slab design and its advantages. Structural design of flat slabs to eurocode 2 structville. This load covers the slab own weight and a live load equal to 3.
Pdf on jan 1, 2015, s p nirkhe and others published analysis of flat slab by matlab coding find, read and cite all the research you need on researchgate. Various simplified methods are therefore adopted for determining moments, shears. Analyses are for a onebaywide strip using the equivalent frame analysis method of the aci code. Pdf analysis of flat slab connection system for seismic loads. The present study aims for reproducing the structural behaviour of flat reinforced concrete slabs in the region around internal columns. Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. Pdf the effective width and equivalent frame analysis methods are applied to a flat plate test specimen.
Reinforced concrete design 1 design of slab examples. Volume 4, issue 12, july 2015 63 loads and boundary conditions the slab is carrying a total working load equal to 12. This manual describes the algorithms used for the various codes. Flat slab analysis, design and detailing pdf civil engineering. Flat plate concrete floor system does not use beams between. Thus, the slabs and the experimental scheme adopted represent the region of negative bending moment, delimited by points of inflection with the length of approximately 1800 mm, i.
Comparative study of reinforced concrete flat slabs with. In this study fe analysis of flat slabs is proposed. Slab supported on edges by wall by stiff rc beam by steel joist. The slab has to carry a distributed permanent action of 1. Pdf comparison of analysis methods of flat slab ijirst. Finite element fe analysis, is a popular powerful computer method of analysing flat slab concrete structures.
The benefits of using flat slab construction are becoming increasingly recognized. A study of flat plate slab column connections with shear. In order to simplify the analysis and to be able to use the superposition principle for evaluating the effect of load combinations, linear analysis is generally adopted even though concrete slabs normally have a pronounced nonlinear response. The slab directly rests on the column and load from the slab is. How to design reinforced concrete flat slabs using finite. Flat slab is designed by using direct design method. A floor system plays an important role in overall cost and service of the building. There are two methods of analysis of rc flat slab viz.
Numerical analysis of flat slab experimentally evaluated is also done in the. An interior load condition is assumed for flexural analysis. The flat slab system of construction is one in which the beam is used in the conventional methods of construction done away with the directly rests on column and the load from the slabs is directly transferred to the columns and then to the. Department of mechanics, materials and structures english courses reinforced concrete structures code. Design of reinforced concrete slabs 105 2 shears vx and vv 3 woodarmer moments mxt, mxb, mvt and m 4 inplane loads. Slab resting on walls or sufficiently deep and rigid beams on all sides. It is closely related to the plastic collapse or limit analysis of steel frames, and is an upper bound or mechanism approach. Tacheometry is a branch of angular surveying in which the horizontal and vertical distances are obtained by optical means as opposed to the ordinary process of chain and tape. Goodchild bsc, ceng, mciob, mistructe practical yield line design an introduction to the practical use of yield line theory in the design of economic reinforced concrete slabs, including examples of design of flat. Flat slab structure leads to economic saving, aesthetic view and yet allow the architect from great freedom of form works as compared to conventional slab structure.
Flat slab analysis and design pdf flat slab design pdf 1. Design considerations for reinforced concrete flat slab floor system harshal deshpande1, radhika joshi2. Structural design of cantilever slabs solved example. In accordance to such research, the lfem is an effective tool in global analysis and. Nancy debora assistant professor civil karunya university 2. Design considerations for reinforced concrete flat slab. Flat slabs system of construction is one in which the beams used in the conventional methods of constructions are done away with.
Volume 4, issue 12, july 2015 analysis of rc flat slab. To achieve this, architects normally extend the slab beyond the ground floor building line, thereby forming a cantilever. Flat slab seminar report, ppt, pdf for civil engineering. A civil engineer must know all the aspects regarding the flat floor system. Both methods use the same procedure to divide the moments so found between the middle strip and column strips of the slab and the beams if any. Analysis and design of slabs two way two way edge supported slabs twoway slabs. Annex i informative analysis of flat slabs and shear walls. Flat slab is defined as one sided or twosided support system with sheer load of the slab being concentrated on the supporting columns and a square slab called drop panels. This publication seeks to introduce fe methods, explain how concrete can be successfully modelled and how to interpret the results. A civil engineer should study these lectures and materials for structural engineering acumen. The slab on grade worksheet assumes a structurally unreinforced slab, aci360type b, reinforced only for shrinkage and temperature.
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