The strip may have up to 20 spans and may have cantilevers at the ends. How to design a flat slab, step by step explained in this video. Pdf analysis of flat slab structures subjected to combined. Among of both the equivalent frame method is widely used. Design of the slab system is done for different spacing grid size of column to find out which grid size of the column or plan area which slab is economical. The following are the objective of project work, a to study the design of flat slab manually.
Extend horizontally from center line column at least 16 center line span. Flat slabs may have drop panels at columns and columns may have capitals. The benefits of choosing flat slabs include a minimum depth solution, speed of construction, flexibility in the plan layout both in terms of the shape and column layout, a flat soffit clean finishes and freedom of layout of. I would use yield line analysis to determine the requited slab thickness as well aa bar size, distribution, and placement. Design of rcc flat slab structure under earthquake loading. This building is designed by considering four cases with different floor systems. 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. Analysis and design of slabs two way civil engineers pk.
A preliminary blast design procedure, using test results and analysis methods, was developed in 1981 by ncel for safe and efficient flat slab structures ref 6. Design and analysis of flat slab without shear wall for 10 storied multistoried building. Dhang, department of civil engineering, iit kharagpur. Analysis and design of rcc and posttensioned flat slabs. 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. The behavior of flat slab is investigated in terms of the following factors. 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 analysis and design of flat slab and grid slab and.
A reinforced concrete slab is built integrally with its supports and consists of two equal spans, each with a clear span of 15 ft. Volume 4, issue 12, july 2015 analysis of rc flat slab. The benefits of choosing flat slabs include a minimum depth solution, speed of construction, flexibility in the plan layout both in terms of the shape and column layout, a flat soffit clean finishes and freedom of layout of services and scope and. Flat slab analysis, design and detailing pdf civil. For the application of design procedure an office building is considered as a case study.
Must watch basics of flat slab for better understanding from the link given below. Analyze and design flat slab or waffle slab floors. Structural design of flat slabs to eurocode 2 structville. 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.
Yield line analysis is an analysis approach for determining the ultimate load capacity of reinforced concrete slabs and was pioneered by k. Introduction in reinforced concrete construction, slabs are used to provide flat, useful surfaces. Reinforced concrete design 1 design of slab examples and tutorials by. From functional aspect a flat slab building is more efficient than a r. Resources used for compiling this presenta4on are acknowledged 3. It is closely related to the plastic collapse or limit analysis of steel frames, and is an upper bound or mechanism approach. Flat slab analysis, design and detailing pdf civil engineering. By doing the comparative analysis and design of posttensioned flat slab with a conventional slab, we can show how beneficial will be the process of making pt.
Flat slabs can be analysed using the frame equivalent method, or by using the simplified analysis method which involves the use of coefficients. Analysis and design of flat slab with and without shear wall. Analysis and design of flat slabs in commercial building. Design of slab examples and tutorials by sharifah maszura syed mohsin.
In this study fe analysis of flat slabs is proposed. Analytical study of solid flat slab and voided slab using. Reinforced concrete flat slab structural engineering. Lecture series on design of reinforced concrete structures by prof. By doing the comparative analysis and design of posttensioned flat slab with a conventional slab, we can show how beneficial will be the process of making pt flat slab than other slabs. Jul 12, 2018 how to design a flat slab, step by step explained in this video. Annex i informative analysis of flat slabs and shear walls.
Different cases of building considered are as given below. Comparative analysis and design of flat and grid slab. Finite element fe analysis, is a popular powerful computer method of analysing flat slab concrete structures. A brick wall of 250 mm thickness including plaster of 1. Flatslab building is very popular from the aesthetic and architectural point of view. Powered by the equivalent frame method of analysis and design per latest american aci 31814 and canadian csa a23. Flat slab analysis and design designs beamless concrete slab floors flat slab or waffle slab in accordance with aci 318. Sep 27, 2017 flat slabs design is appropriate for most floor situations and is also suitable for irregular column layouts, curved floor shapes, ramps etc. Flat slabs design is appropriate for most floor situations and is also suitable for irregular column layouts, curved floor shapes, ramps etc. Volume 4, issue 12, july 2015 63 loads and boundary conditions the slab is carrying a total working load equal to 12. Punching of flat slabs design for shear at th e column heads 12. Trusted windows pc download flat slab analysis and design 2. Design a cantilever projecting out from a room slab extending 1.
Analysis and design of flat slab with and without shear. The best flat slab analysis, design and detailing related pdf and slides are provided here altogether. The analysis and design of slab system is done as per is 4562000 and is 19832002. Reinforced concrete design 1 design of slab examples. Step 2 design forces draw panel of slab and indicate maximum design moments, shears and in. Flat plate concrete floor system does not use beams between columns or. Slab resting on walls or sufficiently deep and rigid beams on all sides. Twoway slabs have two way bending unlike oneway slab.
Page 14 example1 try5 9242008 flat slab analysis and design job. Volume 4, issue 12, july 2015 analysis of rc flat slab system. Flat slab structure with column drop and shear wall together through response spectrum method by using etabs software. There are two methods of analysis of rc flat slab viz. Explore flat slab with free download of seminar report and ppt in pdf and doc format. This load covers the slab own weight and a live load equal to 3. Keywords structure design and analysis of slab system, flat slab system, grid slab system, conventional.
Example analysis using data from the portland cement association engineering bulletin 232, aashto lrfd design of castinplace concrete bridges this example demonstrates how slab bridge designer 2. The solid flat slab design process follows the provisions made in the aci 31811 and. Pdf flat slabs are highly versatile elements widely used in. 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. A reinforced concrete slab is a broad, flat plate, usually horizontal, with top and bottom surfaces parallel or nearly so. Flat slab types of flat slab design and its advantages. 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. However, there are some pitfalls to avoid, that often catch out the unwary. This pdf file contains a chapter of 23 pages with various aspects of flat slabs including four example of flat slab design. Reinforced flat slab design spreadsheet flat slab system is an important division of concrete floor system. This publication seeks to introduce fe methods, explain how concrete can be successfully modelled and how to interpret the results. Flat slab with drop panels flat slab with column head flat slab with drop panel and column head flat slab resting directly on columns 1.
May 01, 2015 civil structural engineering flat slab design 1. 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. Tensioning building structures march 12, 2020 2020 educode las vegas. Analysis and design of flat slab with various shapes.
In the eurocodes, the analysis of flat slab is the same as that recommended in bs 8110. Analyses are for a onebaywide strip using the equivalent frame analysis method of the aci code. 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. Get flat slab analysis and design alternative downloads. How to design reinforced concrete flat slabs using finite. Comparative analysis and design of flat and grid slab system. Analysis and design of flat slabs in commercial building by. The design of the posttension flat slab can be done by using load balancing and equivalent frame method.
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. A flat slab is a reinforced concrete slab supported directly by concrete columns. Comparative study of reinforced concrete flat slabs with. Flat slab seminar report, ppt, pdf for civil engineering. Flat slab analysis and design free version download for pc.
Department of mechanics, materials and structures english. Pdf analysis and design of rcc and posttensioned flat. Flat slab building is very popular from the aesthetic and architectural point of view. Analysis and design of twoway slabs page 1 chapter 3. Blast design procedure for flat slab structures dtic. In the load balancing method the 65 to 80% of the dead load is carried by the tendon itself.
Analysis of flat sanalysis of flat sllabab moment division example 6000 6000 6000 6000 6000 5000 layout of building 7000 5000 a floor slab. From functional aspect a flatslab building is more efficient than a r. The method of analysis is what you need to choose here, flat slab being the intended goal, not a type of design as you imply. So, construction of flat slab building is increasing also in high seismic zone in this paper the response of flat slab building and a. Oneway simply supported slab analysis and design of the slab similar to design of simply supported beam as indicate in the previous chapter.
Nowadays flat slabs are used in most of the building because of its advantages. On the other hand, finite element analysis using computer programs can be used. 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. Oneway spanning slabs should be treated as beams of unit width and chapter 2 should be followed except for minimum shear reinforcement. Pdf analysis and design of flat slab and grid slab and their. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems. 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.
1408 693 834 1135 1145 1205 650 610 832 187 523 1328 967 1227 147 1412 662 1196 19 1281 434 13 875 1465 604 543 507 257 783 13 1341 681 825