The objective of this work was to analyze the adequacy of a design method widely used in the modeling of. Twoway joist concrete slab floor waffle slab system analysis and design design the concrete floor slab system shown below for an intermediate floor with partition weight of 50 psf, and unfactored live load of 100 psf. Lecture series on design of reinforced concrete structures by prof. A reinforced concrete slab is built integrally with its supports and consists of two equal spans, each with a clear span of 15 ft. Four long span composite slab specimens of 20 ft span length, using two different types of deck profiles, were built and tested experimentally. Towards a rational understanding of shear in beams and slabs pdf. Flat slab analysis, design and detailing pdf civil. The service live load is 100 psf, and 4000 psi concrete is specified for use with steel with a yield stress equal to 60,000 psi.
In twoway slabs shorter direction strip carry greater %age of load. Manual for design and detailing of reinforced concrete to. Two way slabs are such slabs in which the loads are shared by both the shorter and longer direction of the slab. Here are the steps for the design procedure for one way slab in steps. On the other hand, finite element analysis using computer programs can be used.
Behavior and design of link slabs for jointless bridge decks. According to the way loads are transferred to supporting beams and columns, slabs are classified into two types. Total thickness of reinforced concrete floor slab range is from 11 to 28 cm. The two classifications are oneway slab and twoway slab. Composite slabs and beams using steel decking researchgate. Analysis and design of rcc box culvert neha kolate1, molly mathew2, snehal mali3 1 p.
Analysis and design of flat slabs in commercial building. Flat slabs can be analysed using the frame equivalent method, or by using the simplified analysis method which involves the use of coefficients. Design is defined as the decisionmaking process of planning, sizing, detailing, and developing specifications preceding construction of slabs onground. One way slab being supported on two opposite sides only leads to the structural action in single direction. The actual design algorithms vary based on the specific design code chosen by the user. Limit state method is used for analysis and design. This paper presents the analysis and design of ballastless track slab for 17t railway loading. Introduction in reinforced concrete construction, slabs are used to provide flat, useful surfaces. Request pdf analysis and design of sfrc slabs the inclusion of the steel fibers in the concrete at the time of its production leads to a significant improvement of strength properties of the. Yield line analysis is an analysis approach for determining the ultimate load capacity of reinforced concrete slabs and was pioneered by k. Slabs having supports on less than four sides can be designed as oneway.
Shear strength in one and twoway slabs according to the. Before going to this topic, please read it there are two types of slab classification based on the direction of bending occurs in these slabs. Numerical and experimental study of a real scale waffle slab. Twoway slabs have two way bending unlike oneway slab. Composite slabs consist of profiled steel decking with an insitu reinforced. Information on other aspects, su ch as materials, construction methods, placement of concrete, and finishing techniques, is.
A six storey building for a commercial complex has plan dimensions as shown in figure 1. Slabs are elements forming floor and roofs in building which normally carry uniformly distributed loads. Design of slab examples and tutorials by sharifah maszura syed mohsin reinforced concrete design 1 design of slab examples and. The flat slabs has got place in providing feature like more stiffness, higher capacity, safe and economical also. From the start of design conception through the production of. Analysis and design of slabs one way civil engineers pk. Purpose of building residential f ck 25 mpa f yk 460 mpa concrete cover 25 mm height of block wall 2. Instructional materials complementing fema p751, design examples foundation analysis and desing foundation design 1. This research is demonstrated on the project smart slab, the first concrete slab using 3d. Oneway simply supported slab analysis and design of the slab similar to design of simply supported beam as indicate in the previous chapter. This paper presents the results of a test program to investigate the behavior of jointless bridge deck, and proposes a simple design method for the link slab. Structural design of cantilever slabs solved example. Analysis and design of slabs two way civil engineers pk. Slabs are usually used in floor and roof construction.
The slab on grade worksheet assumes a structurally unreinforced slab, aci360. Oneway and twoway slabs university of asia pacific. Dhang, department of civil engineering, iit kharagpur. Structural design of flat slabs to eurocode 2 structville. Twoway joist concrete slab floor waffle slab system. Design and analysis of transverse slab is difficult to compare to normal building patil and sigi, 2014. The project also consists of cross check of manual results with the. It may be supported by reinforced concrete beams and is usually cast.
For 1m slab width, moment, shear force, oneway continuous slab for continuous slab, moment and shear force can be obtained from table 3. Slimfloor beams with significantly increased beam stiffness due to the. All books are in clear copy here, and all files are secure so dont worry about it. Step 2 design forces draw panel of slab and indicate maximum design moments, shears and in. Composite slimfloor beam cosfb is a new generation of. This site is like a library, you could find million book here by using search box in the header. Design of beam, column, slab, shear wall, stair case, retaining wall, water tank and an isolated footing are done. A brick wall of 250 mm thickness including plaster of 1. Flat slab is a slab provided without beam resting directly on supports like columns or walls.
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. Analysis and design of rcc and posttensioned flat slabs considering seismic effect article pdf available january 20 with 2,064 reads how we measure reads. This guide covers the design and construction of composite slabs and beams, and. Two way slab being supported on four sides the load will be carried in both the directions. Design the slab, following the provisions of the ack code. The aim of this paper is to analyse a ballastless standard rail track using staad pro and to obtain maximum design moments as contours from staad pro. It is closely related to the plastic collapse or limit analysis of steel frames, and is an upper bound or mechanism approach. The simplified calculation methods for columns, walls, beams and slabs are described.
Analysis and design, apartment building,lift pit, shear wall, 1. Transverse slab is directly supported on concrete column, these are generally employed for architectural reasons for. Although almost all the technical standards approach to slab design is basically one of using elastic moment distributions, it is also possible to design slabs using. This booklet contains a static calculation of structural analysis and design of apartment located in debre berhan. Along with analysing and designing of this building, construction sites were also visited. It explains the yield line method of analysis and hillerborgs strip method of design, and discusses the basic north american and british practices. Pdf analysis and design of rcc and posttensioned flat. In this work the analysis is done for seismic analysis to check that flat slab commercial building is applicable in different zones without any failure.
Without significantly increasing the slab depth and weight compared to those of composite slabs with typical span, it was found that these long span slabs showed good performance under the load tests. Oneway spanning slabs should be treated as beams of unit width and chapter 2 should be followed except for minimum shear reinforcement. A civil engineer must know all the aspects regarding the flat floor system. 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. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems. An interior load condition is assumed for flexural analysis. The project aims at analysis and design of pyramidal slab as per standard provisions. Various simplified methods are therefore adopted for determining moments, shears and reactions in such slabs. Reinforced concrete design 1 design of slab examples.
Analysis and design of rcc and posttensioned flat slabs. Reinforced concrete design 1 design of slab examples and. For those who do not know what are the des ign requirements of a slab. Pdf design of reinforced concrete slabs ninos dinkha. If slab is supported on all four sides and r shorter side longer side slab. Find depth of slab using deflection control criteria. Ballastless track slab is a continuous slab of concrete in which the rails are supported directly on the upper surface by using resilient pad. Read online analysis and design of rcc and posttensioned flat slabs.
The manual and advisory safety code of practice for concrete pumping67. Seismic analysis of flat slab by using etabs international journal. Design a cantilever projecting out from a room slab extending 1. Type b, reinforced only for shrinkage and temperature. Design of slab examples and tutorials by sharifah maszura syed mohsin example 1.
Manual for design and detailing of reinforced concrete to september 20 the code of practice for structural use of concrete 20 contents 1. That is, the concentrated post or wheel load is assumed to be well away from a free slab edge or corner. To see their result for this slab we will find the load factor. The building is located in seismic zone iii on a site with medium soil. Pdf 3 analysis and design of deck slab satya narayana. Modular precast concrete floor and roof slabs are machine manufactured under. The lateral loads are independently resisted by shear walls. The slab is without drops and is supported internally and on the external long sides by square columns. Anchorage and lap splicing detailing of slabs, columns.
Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. The global structural analysis should be based on verified information. Determination of the reinforced concrete slabs ultimate. When designing continuous reinforced concrete floor slabs it is necessary to add some. Analysis and design of twoway slabs page 1 chapter 3. This barcode number lets you verify that youre getting exactly the right version or edition of a book. Analysis and design crc press book this book provides an uptodate description of the latest procedures for analysis and design of reinforced concrete slabs. Ultimate behavior of oneway spanning slab linear elastic analysis methods such as moment distribution are linear elastic methods. A reinforced concrete slab is a broad, flat plate, usually horizontal, with top and bottom surfaces parallel or nearly so. Analysis and design of steel deckconcrete composite slabs. Here the ratio of longer span of slab to the shorter span of slab is less or equals to 2. Design procedure steps for one way slab slab design steps. The shear area of concrete is entered as input to some computer programs when the analysis is required to take into account the deformations due to shear. Powered by the equivalent frame method of analysis and design per latest american aci 31814 and canadian csa a23.
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