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. Fast and easy construction disadvantages of flat slab system concrete slabs are one of the most. Adoss is a program used often in industry and is a useful tool in. Advantages and disadvantages of flat slabs civil engineering. Concrete flat slab design software handy concrete estimator v. This design, with contractor collaboration, has set a new standard in office buildings and created a new efficient architecture which gives further enhancement to coreonly tall buildings.
Review of reinforced concrete flat plate design as per aci. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems. The program is divided into three separate screens, which correspond to the three major areas of concern in the design of a posttensioned member. Flat plate slab is that in which slab is directly supported on columns without column capital, drop panel or beams. An important feature of the concrete framing design is a dramatic 30foot corner cantilever achieved with a 25inch deep posttensioned upturned beam. How to form, pour, and stamp a concrete patio slab duration.
A total of seven largescale flat plate slabs 1,700 x 1,700 x 150 mm were constructed and loaded up to failure. Two way slab design to aci free download and software. One can use to make analysis of timber truss structures attached with punched metal plate fasteners. Layout of ninepanel reinforced concrete flat plate. Flat slab design spreadsheets to eurocode excel sheets. The design of the flat plate slab utilized the adoss computer design system. Flat slabs are usued for their aesthetic appearance and. Reinforced concrete flat slab structural engineering. Flat slab is a reinforced concrete slab supported directly by concrete columns without use beams. Posttensioned concrete design spreadsheet program a pdh. Flat plate slab design using section cut in sap2000. Mar 1, 2017 reinforced flat slab design excel sheet best online engineering resource. Download scientific diagram types of twoway slabs a flat plate b flat slab. Twoway flat plate concrete floor system design structurepoint.
Sci p300, composite slabs and beams using steel decking. Radial cracking in reinforced concrete flat plate slabs. In normal design situations, this type of failure is avoided by proper selection of slab. Flat slab analysis and design designs beamless concrete slab floors flat slab or waffle slab in accordance with aci 318. Structure magazine flat plate concrete construction. A civil engineer must have sufficient knowledge on various features of flat slab system. Civil engineering construction student house concrete structure outdoor tables outdoor decor concrete slab reinforced concrete plate backyard. Download this free cad drawing of a flat slab detail for use in your construction cad models. Design the flat plate using section cut techniques in sap2000.
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. The flat plate is a twoway reinforced concrete framing system utilizing a slab of uniform thickness, the simplest of structural shapes. This spreadsheet is an extremely efficient tool and allows to quickly design two way slabs to aci code. Mike day everything about concrete recommended for you. The research is limited to flat plates where the design of slabs is governed by gravity loads and the slabs are supported on square columns. The main discussion of this study will weigh upon the value of using a flat plate concrete system as opposed to the existing steel structural system. The building shall have a central rc core and columns only around the edge of the floor plate. Commonly used where spans are not large 20 to 25 ft.
Oneway and twoway slabs oneway slabs transfer the imposed. Design methods validated by experimental evidence for flat slabs supported on. 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. Punching strengthening of twoway slabs using external steel plates. Reinforced flat slab design excel sheet best online.
The strip may have up to 20 spans and may have cantilevers at the ends. The slab design is designed to be reinforced in several directions so that it can withstand stresses such as shifting ground, earthquakes, frost, and so forth. This design is a complete flat plate slab design, from shear to bending along with design of columns and shear head reinforcement. This guide covers the design and construction of composite slabs and beams, and addresses. A flat plate is a one or twoway system usually supported directly on columns or load bearing walls. Flat slab analysis and design free version download for pc. Flat slabs may have drop panels at columns and columns may have capitals. Concrete slab design twoway reinforced concrete flat slabs are an efficient. It analyses the stability of the wall based on the loads and resistances, and results in. Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. It is recommended that a precisely level and flat concrete floor is not specified. Download the excel sheet for reinforced flat slab design in concrete floor system, the flat slab system is considered as one of the vital parts. Concrete slab design software free download concrete. This behavior has been observed in slabs in which design andor construction errors have been identified, and in.
The objective of this article is to provide an overview of the current state of practice of the design of reinforced concrete flat plate systems. Benefits shorter construction time flat plate design will facilitate the. Reinforced concrete flat slabs are widely used as a flooring system for multistory. 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 stomach flat fashion the. The lateral loads are independently resisted by shear walls. The local stress at the tire contact area is too high and we need to add steel plate on the floor to distribute the loads. General aci design requirements are presented, along with a summary of the aci direct design, aci equivalent frame, yield line, and strip design techniques. A civil engineer must know all the aspects regarding the flat floor system.
Flat plate concrete floor system does not use beams between columns or. Heavy wheel loads on concrete slab on grade when moving equipment into position during the construction phase. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete. Flat slab system is an important division of concrete floor system. 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. Two way slabddm flat plate and beam supported simplified. Flat slab are slab which dont have beams or continuous t beams bw them as ribs to increase the rigiditymeanwhile one with beams is called grid slab one which you usually see these days. Typical flat slab structural forms a flat plate, b flat slab with drop panel and column. These materials are originally located at different websites. Reinforced concrete slab and beam design software adaptrc. Since the flat plate is symmetrical in two directions, one needs to define section cuts in one direction and for half the slab. A flat slab is a twoway reinforced concrete slab that usually does not have beams and girders, and the loads are transferred directly to the supporting concrete columns. Flexibility in room layout where the installation of the partition walls can be done anywhere.
This spreadsheet program provides for the design and analysis of posttensioned concrete oneway beam and slab systems and twoway flat plate slab systems. Retainwall is a software mainly developed for the purpose of designing a concrete or masonry retaining wall. Voided flat plate voided slab the concept of the voided slab is simple in that concrete mass is removed from the areas in the slab where it is not needed to resist load and as a result of the reduced dead load, voided slabs can span further. Flat plate voided concrete slabs, reinforced concrete floor systems, twoway slabs, voided slabs. For a twoway slab supported on beams these strips carry the load to the. Flat plates are concrete slabs which are carried directly by columns, without the use of beams or girders uses. Analyze and design flat slab or waffle slab floors. Types of flat slabs, its design and advantages described. 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.
Structural performance of reinforced concrete flat plate buildings. Department of mechanics, materials and structures english. Typically, a flat slab is made with reinforced concrete, in which rebar is crisscrossed in the forms to provide support and reinforcement once the concrete is poured and hardened. Slab load transfer to the beams and then in to the columns. Voided concrete flat plate slab systems, which have been used for many years in europe and other parts of the world, are becoming increasingly popular in the u. Direct design method ddm flat plate design enables to. The intention is to design the slab spanning between the perimeter columns and the central core walls as. Before you start, you must be familiar with your operating system. Flat slab design spreadsheets to eurocode september 27, 2017. Reinforced concrete 2012 lecture 1019 if the concrete s shear capacity is smaller then the actual shear force. Thefloor plate is somewhat elliptical, whilst the core is circular.
Trusted windows pc download flat slab analysis and design 2. This tutorial describes the basic functions of scia engineer, the input, analysis and design of a concrete slab. The design i am going to share with you today is design of flat plate slab as by definition. Nancy debora assistant professor civil karunya university 2. The slab is loaded by self weight of the slab and live load of 5 knm2. Design concrete retaining wall spreadsheetdownload free. Flat slabs design is appropriate for most floor situations and is also suitable for irregular column layouts, curved floor shapes, ramps etc. Explore flat slab with free download of seminar report and ppt in pdf and doc format. Flat slab cad drawing dwg cadblocksfree cad blocks free. Get flat slab analysis and design alternative downloads. Flat slab types of flat slab design and its advantages. More detailed advice on determining design life, loading, material properties, methods of analysis, minimum concrete cover for durability and bond, and control of crack widths can be found in chapter 2 of how to design concrete structures using eurocode 2.
Flat platevoided concrete slab systems, which have been used for many years in europe and other parts of the world, are becoming increasingly popular in the united states because of their many inherent benefits. Flat slab seminar report, ppt, pdf for civil engineering. Analyses are for a onebaywide strip using the equivalent frame analysis method of the aci code. A study of flat plate slab column connections with shear. Flat slab analysis, design and detailing pdf civil. The wall may retain soil or other granular material. Pdf irregular flat slabs designed according to the structural. Strength investigation and strengthening of existing floor slabs. Introduction flat slab flat slab with drop panels flat slab with column head flat slab with drop panel and column head. Analysis, design and investigation of beams, one and twoway slab systems, flat plate, flat slab, waffle slab and slab bands. Reinforced concrete flat plate slabs and slabs with drop panels often exhibit radial cracking in the vicinity of column supports under normal serviceconstruction loading.
474 1562 1348 1123 1397 306 40 1548 405 1493 957 443 108 752 507 1093 653 871 916 1365 394 1148 733 1434 407 75 591 932 383 1367 366