The slab is for an offi ce where the specifi ed load is 1. Whilst the publication covers the design of common elements, it is an introduction, not a comprehensive handbook. Design of slabs part v design of columns part i design of columns part. Nancy debora assistant professor civil karunya university 2. Design methodology design methodology simplified method table 3. This publication seeks to introduce fe methods, explain how concrete can be successfully modelled and how to interpret the results. Design of reinforced concrete structures ii twoway slabs. Analysis and design of flat slab and grid slab and their. Design of masonry short and long walls, columns and retaining walls. 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. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems.
Lecture series on design of reinforced concrete structures by prof. Flat slab and grid slab has been analyzed by staad pro. Practical yield line design 2 notation symbols the symbols used in this publication have the following meaning. The slab is 300 mm thick and columns are 400 mm square. The analysis of flat slab, flat slab without drop and grid slab done both manually by is 4562000 and by staad pro v8i. Flat slab analysis and design designs beamless concrete slab floors flat slab or waffle slab in accordance with aci 318. In this course, basic elements governed by bending, shear, axial forces or combination of them are identified and are considered as building blocks of the whole structure. Flat slab design pdf bs 8110 concrete design for slab flat plate design how to pour a concrete slab slab on grade foundation how to calculate formwork for slab post tension slab how to pour a 26x36 concrwte concrete slab bflat flat earth chopin e flat flat tyre nocturne e flat flat rate flat world flat land flat. 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. This paper guide us how to select drop, panel width, thickness of slab and detailing of reinforcement.
Load transfer in a oneway slab, b twoway slab nilson fig. This design is a complete flat plate slab design, from shear to bending along with design of columns and shear head reinforcement. The method is generally applicable where columns are more or less equally spaced. Asce, secb course content slab on grades construction. Oneway and twoway slabs university of asia pacific. Punching of flat slabs design for shear at th e column heads 12. International journal of pure and applied mathematics. Bending will take place in the two directions in a dishlike form. Analysis of flat sanalysis of flat sllabab moment division example 6000 6000 6000 6000 6000 5000 layout of building 7000 5000 a floor slab. Practical yield line design an introduction to the practical use of yield line theory in the design of.
Aug 30, 2014 the design i am going to share with you today is design of flat plate slab as by definition. Flat slab analysis and design free version download for pc. Symbol description units a area of column crosssection m2 a, b, c plan dimensions of slab supported on several sides m d dissipation of internal energy knm e expenditure of energy by external loads knm. 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. Flat slabs may have drop panels at columns and columns may have capitals. How to design reinforced concrete flat slabs using finite. This pdf file contains a chapter of 23 pages with various aspects of flat slabs including four example of flat slab design. Introduction to spread footings and mat foundations. Department of mechanics, materials and structures english. The building is located in seismic zone iii on a site with medium soil. Ultimate behavior of oneway spanning slab linear elastic analysis methods such as moment distribution are linear elastic methods. One way slab being supported on two opposite sides only leads to the structural action in single direction. Hi everyone, this video is all about the design of flat slab part1 as per is 456 2000 in hindi.
Oneway and twoway slabs oneway slabs transfer the imposed. A column strip is defined as a strip of slab having a width on. Design of reinforced concrete structures is an introductory design course in civil engineering. Powered by the equivalent frame method of analysis and design per latest american aci 31814 and canadian csa a23. Analysis and design of flat slab and grid slab and their cost. Module 5 lectures 17 to 19 mat foundations topics 17. Keywords flat slab with drop, flat slab without drop, grid slab, drop, column capital i. Oneway simply supported slab analysis and design of the slab similar to design of simply supported beam as indicate in the previous chapter. For the purposes of design, a typical flat slab panel is divided into column strips and middle strips.
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 construction and design of concrete slabs on grade d. A reinforced concrete flat slab also called as beam less slab, is a slab supported directly by columns wit hout beams. Find depth of slab using deflection control criteria. Flat slab sized for punching shear and deflection additional reinforcement added to span steel to reduce deflections typically 25% extra on a 7. Punching of flat slabs design for shear at the column heads. A reinforced concrete slab is built integrally with its supports and consists of equal span of 15 ft. For 1m slab width, moment, shear force, oneway continuous slab for continuous slab, moment and shear force can be obtained from table 3. A six storey building for a commercial complex has plan dimensions as shown in figure 1.
Design moments in the slabs are more near the column. Jul 02, 2010 lecture series on design of reinforced concrete structures by prof. Flat slab is more flexible and economical as compare to conventional slab. The service live load is 100 psf and 4000 psi concrete is specified for use with steel with a yield stress equal to 60000 psi. Th e flat slab is often thickened closed to supporting column s to provide adequate strength in shear and to reduce th e. Design the exterior panel of a flat slab of size 6 m. Flat slab seminar report, ppt, pdf for civil engineering. R it is observed that the flat slab with drop is more economical than flat slab without drop and grid slabs.
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. Pdf design of flat slab worked example mohamed hussein. The floor system is supported by columns of size 500 mm. Reinforced flat slab design spreadsheet flat slab system is an important division of concrete floor system. This study includes complete analysis and design of flat slab as per indian code of practices is456. Introduction concrete slabs on grade are a very common type of concrete construction. These method can be used provided the limitations specified therein are satisfied. Comparative analysis and design of flat and grid slab. Oct 04, 2017 how to build and setup a concrete foundation for garages, houses, room additions, etc part 1 duration. The results of the study show that the slab can be successfully used for residential buildings as it meets all the requirements and demands fewer materials. Design of reinforced concrete structures ii twoway slabs 1 1.
Finite element fe analysis, is a popular powerful computer method of analysing flat slab concrete structures. Flat slab analysis, design and detailing pdf civil. Bm and sf coefficients for flat slab or 3 or more equal spans outer support. 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. We have shared the design of reinforced concrete structures lecturer notes in topic wise pdf. Design of beamsslabs notes click to download bondanchorageanddevelopmentlength notes click to download basic rcc notes click to download prestressedconcretestructure notes. For uniformly distributed loads of w per square foot of the slab, each strip acts approximately like a simple beam uniformly loaded by its share of w. If frame analyses are performed to check the flexural resistance of a slab, the design moment, m ed transferred from the slab to a column and the design shear, v ed. Explore flat slab with free download of seminar report and ppt in pdf and doc format. Dhang, department of civil engineering, iit kharagpur. The strip may have up to 20 spans and may have cantilevers at the ends.
Different types of shear reinforcement used at column heads. However, there are some pitfalls to avoid, that often catch out the unwary. Analysis of flat sanalysis of flat sllabab column head l ho l h max l c d h i l h l h, max l ho l h max l c d h ii l h l ho effective dimension of a head, where l ho actual dimension, l. It is more helpful to revise the basics in quick manner. Design of short and long columns with axial and eccentric loading, design of isolated column footing.
To see their result for this slab we will find the load factor. Hence the slab is thickened near the columns by providing the drops. Comparative analysis and design of flat and grid slab system. Accordingly, main reinforcement is required in the two directions. The construction and design of concrete slabs on grade. Flat slab analysis, design and detailing pdf civil engineering.
One way slab design how to design one way slab daily civil. Design of rcc structures lecturer notes topic wise pdf. Analyses are for a onebaywide strip using the equivalent frame analysis method of the aci code. Flat slab design structural analysis beam structure scribd. 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. Designing for shear in slabs including punching shear. Design of reinforced concrete structures free video lectures.
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