Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. Steps to placing a superflat floor concrete construction magazine. After reading this article you will learn about the design of slab and girder bridges. Trimble is an international company focusing on positioningrelated technology for different industries. Flat slab analysis, design and detailing pdf civil. Sep 14, 2016 trimble is an international company focusing on positioningrelated technology for different industries. The fmin system is based upon defining the maximum variation in a floor surface for a particular lift truck. Design considerations for reinforced concrete flat slab floor system harshal deshpande1, radhika joshi2. Department of mechanics, materials and structures english courses.
One way slab bends in one direction and two way slab bends on both the directions. 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. Design and detailing of rectangular flat slab panels. To obtained a live load per foot divide the lane load and truck loads by the effective width. The success of super slabs can be attributed to the effective combination of superlative products and dedicated service excellence. 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. Often equated to the bones of a building, flat slab concrete systems are the structural system of the building. Design of beam and slab sections for flexure, shear and torsion. Nancy debora assistant professor civil karunya university 2. In case of unsafe hidden beam design reframe the plan or revise slab depth or column size or concrete grade. Design of flat slab with edge beams by direct design method 16 14 14 3 b c 1 c 2 c 3 c 4 3 1 c 5 c 6 c 7 c 8 c 9 14 c 10 11 c c 12. In this chapter information about the building site and the building structure are combined and used to determine the size of footings, reinforcing for the foundation, and the size and spacing of anchorage used to tie the unit to the foundation. Department of mechanics, materials and structures english courses reinforced concrete structures code.
In case of slab s 2, the design for panel 2 is similar to the design for panel 1 for slab s 1 and slab s 3, moment of inertia of edge slab, i s. Super flat concrete leveling with the dustram system. Design considerations for reinforced concrete flat slab. Powered by the equivalent frame method of analysis and design per latest american aci 31814 and canadian csa a23. Punching of flat slabs design for shear at th e column heads 12. 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. Different types of shear reinforcement used at column. A civil engineer should study these lectures and materials for structural engineering acumen. 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.
Super slabs gauteng is one of south africas largest slab suppliers. We have qualified engineers with years of experience in precast slab systems. To understand the techniques of surveying a student must carefully study the bas. For purposes of analysis and design, a unit strip of such a slab cut out at right angles to the supporting beams, as in figure 2, may be considered as. This video shows ways to bring a concrete truck in through sand and not get stuck. Superflat floors concrete floor contractors association of. 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.
These materials are originally located at different websites. This paper presents the design of an 80story reinforced concrete rc highrise building using 200 mpa ultrahighstrength concrete. Oneway and twoway slabs oneway slabs transfer the imposed loads in one direction only. Salunke mgms college of engineering and technology, kamothe, india mgms college of engineering and technology, kamothe, india abstract the use of posttensioned flat slab is increasing day by day, due to its advantages over traditional concrete. This section evaluates the current roof deck and support systems capacity to carry this. Sachpazis date 18012014 chkd by date appd by 1 flat slab design to bs8110.
Flat slab seminar report, ppt, pdf for civil engineering. Flat plate strength is often governed by shear strength at the columns, and for service. The trun function truncates the calculated value to a single n ltrunc interger ie 3. Nov 24, 2018 design a slab culvert for two lane national highway using the loading conditions as class a tracked vehicle for the following data. Punching of flat slabs design for shear at th e column heads. A flat slab is a twoway reinforced concrete slab that usually does not have beams. Flat slab sized for punching shear and deflection additional reinforcement added to span steel to reduce deflections typically 25% extra on a 7. The prokon suite includes a series of modules for designing concrete elements. They may be supported on two opposite sides only fig.
The benefits of using insitu concrete flat slab construction should be. It was found that a certain amount of poor design was prevalent, and the. Concept designs prepared assuming detailed design would be to bs 8110 may be continued through to detailed design using eurocode 2. 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. Flat slab types, uses, advantages and disadvantages.
Analysis of posttensioned flat slab by using safe shriraj s. Super flat na na table 1 floor flatness tolerance compliance correlation between division 3 floor flatness f f and floor levelness f l and division 9 substrate tolerances tds 233. Flat slabs carried on columns and edge beams or walls with no interior beams. We have qualified engineers with years of experience in. How to get back to normal, using design to fight the pandemic, more mask. Structural analysis the addition of a green roof to the slcc imposes additional gravity loads on the structure.
Design of flat slab with edge beams by direct design method 16 14 14 3 b c 1 c 2 c 3 c 4 3 1 c 5 c. This assumes that the slab thickness has previously been determined during conceptual design. Oneway and twoway slabs university of asia pacific. Superflat floors are constructed to far tighter tolerances than conventional floor slabs using a specialized tolerance system call the fmin f minimum tolerance system. Slabs are constructed to provide flat surfaces, usually horizontal, in building. 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. 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 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 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.
The conclusion to include an extensive green roof imposes a minimum superimposed dead load of 25 pounds per square foot dc greenworks. We also show how a bump cutter works as well as floating pans to. Flat slab is a reinforced concrete slab supported directly by concrete columns without. The benefits of using insitu concrete flat slab construction should be investigated at the conceptual design stage. Flat slab is defined as one sided or twosided support system with sheer load of the slab being. Design of slab culvert class a loading mod 2 lec 1 youtube. Analysis and design of the slab similar to design of simply supported beam as indicate in the previous chapter.
Through this technical paper, a process for estimating a. Oneway simply supported slab analysis and design of the slab similar to design of simply supported beam as indicate in the previous chapter. The benefits associated with flat slab construction may well outweigh those of other structural solutions, which could be more complicated, timeconsuming and ultimately more costly. Floor depth for preliminary design the general loadspan graphs in figures 2to 7 can be used to determine a suitable plank depth. Flat slab analysis and design pdf flat slab design pdf 1. Super flat floors are appropriate for very limited applications with random traffic. For carrying out this project an interior panel of a flat slab with dimensions 6.
Flat slab design is meant for vertical loads only, for lateral loads shear walls or bracing systems shall be provided. Flat slab analysis, design and detailing pdf civil engineering. Flat plate concrete floor system does not use beams between columns or. For carrying out this study an interior panel of a flat slab with dimensions 6. Design considerations for reinforced concrete flat slab floor. The slab thickness may need to be increased if deflection and vibration are critical such as when there are sustained live loads, rhythmic action, masonry partitions or a large number of openings. How to estimate the cost of highrise cast in place flat. Today, the flat plate form is preferred for light loads and short spans. The beams reduce the available net clear ceiling height. Flat slab design tekla structural designer user assistance. The four corners of the slab panel are supported, e. Flat slab analysis and design designs beamless concrete slab floors flat slab or waffle slab in accordance with aci 318.
Superflat floors concrete floor contractors association. Design a slab culvert for two lane national highway using the loading conditions as class a tracked vehicle for the following data. Blast design procedure for flat slab structures dtic. 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 design. International journal of intellectual advancements and. N number of lanes, the interger part of w rdwy12 3. Rectangular and circular columns, and also columns with any general shape. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems. Correlation between division 3 floor flatness ff and. Pdf in a developing country like india the benefits of posttensioning system are yet to be recognized. To limit the deflection of a floor slab and its sensitivity to vibration, the ratio of span to overall depth is usually kept in the range of 3035 but can be up to 40. Seismic codes are also silent on the design of flat slab.
Superflat floor meets warehouse needs concrete construction. A procedure for carrying out the detailed design of flat slabs is shown in table 1 below. General overview of posttensioned concrete design instructor. Flat slab cast in place concrete is one of the most important systems a core and shell estimator must complete for a high rise building. For beamless slabs, the choice between a flat slab and a flat plate is usually a matter of loading and span. The quality of a concrete floor or slab is highly dependent on achieving a hard and durable surface that is flat, relatively free of cracks, and at the proper grade and elevation. Explore flat slab with free download of seminar report and ppt in pdf and doc format. For lighter loads the column heads and drop panels are eliminated, such flat slab with constant thickness supported on prismatic columns are called flat plate. The design loads, required spans, serviceability requirements, and strength requirements are all important. Properties of the surface are determined by the mixture proportions and the quality of the concreting and jointing operations. How to pour a flat concrete slab texas barndominiums. The slab is designed based on 1foot strips, therefore the live load most be distributed to these strips. In general, the design of slab become more simpler because compression. The thickness of slab over columns is also increased to support heavy loads and the thickened part of the slab is called drop panel.
Slab and girder bridges are used when the economical span limit of solid slab bridges is exceeded. Flat slab types of flat slab design and its advantages. Flat slab analysis and design free version download for pc. Surveying, the first step of starting a new civil engineering project, is a very important branch of civil engineering. For 1m slab width, moment, shear force, oneway continuous slab for continuous slab, moment and shear force can be obtained from table 3. Because subgrade soil conditions were poor and the owner wanted jointfree lifttruck aisles, the design build contractor designed a 16inchthick continuously reinforced concrete floor, locating all construction joints under the designated storage rack locations and eliminating transverse contraction joints. Department of mechanics, materials and structures english.
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