Design and detailing of flat slabs linkedin slideshare. Twoway concrete floor slab with beams design and detailing design the slab system shown in figure 1 for an intermediate floor where the story height 12 ft, column crosssectional dimensions 18 in. I have seen in the ram modelling, the reinforcement of the step down section looks like a beam with top slab on oner side and bottom slab on the opposite is the same the slabs on both sides ie. Effective span of slab shall be lesser of the two 1. Design manual to bs8110 bs8110 general detailing rules. Powered by the equivalent frame method of analysis and design per latest american aci 31814 and canadian csa a23. While our company may be relatively new, our products have been in the industry for more than 20 years. Alternatively, while slab is supported on all 4 sides and bending happen in 2 directions are declared to be two way slab. Inducta software now includes the latest version of australian standards for design of concrete structures. Flat slab structure leads to economic saving, aesthetic view and yet allow the architect from great freedom of form works as compared to conventional slab structure. In the required layout, the rails are located around.
Hi i am detailing a slab in revit for the first time. Slab supported straightforwardly through columns are known as flat slab. The four corners of the slab panel are supported, e. Finite element fe analysis, is a popular powerful computer method of analysing flat slab concrete structures. Flat slab analysis, design and detailing pdf flat slab system is an important division of concrete floor system. This system is similar to the twoway flat plate system except there is a drop panel to provide extra thickness around the columns. How to design reinforced concrete flat slabs using finite. Drop panels play a significant role here as they augment the overall capacity and sturdiness of the flooring system beneath the vertical loads thereby boosting cost effectiveness of the construction. Reinforcement detailing of reinforced cement concrete slabs. Flat slab analysis, design and detailing pdf civil. This is significantly more cost effective than the results seen when traditional slab rc detailing is completed in accordance with the simple methods made available as a manual option in design codes. Flat slab system is an important division of concrete floor system. Flat slabs are mostly used in large industrial structures, parking garages, ramps, warehouse, high rise buildings and hotels. Input uniformly distributed loads independent of slab geometry.
This revit tutorial video shows how to create reinforcement detailing in revit with the help of sofistik. This article describes how a flat slab is generated as 2d model in rfem and the loading is applied according to eurocode 1. 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. From assembly plant, the construction system of the flat slab of a commercial project is detailed. The rest of the floor can be slightly thinner with less dead weight. The benefits of using insitu concrete flat slab construction should be investigated at the conceptual design stage. Reinforced concrete modeling and detailing software. Using various software for the accurate detailing with best time utilization for different building elements like columns, beams, plinths, docks, regular and special geometry of staircase, slabs, double tees, inverted tee beams, solid wall panels, sandwich and. Flat slab analysis, design and detailing pdf civil engineering. Flat slab design software programs for structural engineering. Models can have columns, braces, walls, and ramps connected from the floors. 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 civil engineer must know all the aspects regarding the flat floor system. Flat slab structures are the best solution for high rise. The calculation done by the software was compared to manual calculation to ensure. Flat slab types of flat slab design and its advantages. Slab may be supported on walls or beams or columns. 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. Availability of this program was discontinued in 2008. Reinforced flat slab design excel sheet best online. Reinforced concrete slab and beam design software adaptrc. Specialist geotechnical modules allow our software to model soil as springs, with spring stiffness.
Flat slab types, uses, advantages and disadvantages. Design of flat slab with drop panel in etabs tutorial detailing of. While ive heard about tekla structures while i was preparing for an interview in a private company but never worked with it. Details title design and detailing of flat slab with drop panel in etabs duration 30 mins language english format mp4 size 110 mb download method direct. However, there are some pitfalls to avoid, that often catch out the unwary. It is termination on slab during the concreting works. Review paper on behavior of flat slab under dynamic loading. Design of flat slabs using shell finite element analysis.
From the slab design form, there are three types of reinforcing display available. Literally, it is defined as a longitudinal cut in the slab during the concrete pouring process. Direct design method ddm twoway slabs satisfying the limits in aci 31814 8. Pdf design and detailing of flat slab art seel academia. Flat slab analysis and design designs beamless concrete slab floors flat slab or waffle slab in accordance with aci 318. The column tends to punch through the slab in flat slabs, which can be treated by three methods. Flat slab reinforcement detail structural engineering. Sconcrete basic is a concrete design and detailing plugin for adapt builder easily define concrete sections. In your search for flat slab design software for structural engineer firms, you should take a look at the products offered by digital canal. Nov 25, 2018 hi i am detailing a slab in revit for the first time.
Stud rails is needed in construction to reinforce a flat slab against punching shear and is located around a column head or base. Nov 20, 2014 openingsanalysis analysis of flat slab for all other cases of openings, it should be framed on all sides with beams to carry the loads to the columns. Calculate steel in drop panels using etabs software. The following sections outline the solution per ddm, efm, and spslab software respectively. L center to center distance between the support b depth of slab. Easily export and analyse floors in ptd with auto tendons. Which is the best automatic structural detailing software. This is further explained in a companion best practice guide, rationalisation of flat slab reinforcement. A flat slab is usually a pointsupported joistfree plate. Drops should be ignored if the smaller dimension of the drop is less than onethird of the smaller dimension of the panel. Flat slab may be analyzed and desig ned by any me thod as long as they satisfy the strength, stiffness an d sta bility requirements of the is.
Manual for design and detailing of reinforced concrete to september 20 the code of practice for structural use of concrete 20 contents 1. Stud rails design system consists of a number of stud and rail units and each unit consists of doubleheaded studs, hot forged to three times the diameter of the bar which is welded to a flat steel carrier rail. Drawing labels, details, and other text information extracted from the cad file translated from galician. Flat slab detail dwg full project for autocad designs cad. The step down or drop can exceed the a couple of times the thickness of the flat slab.
Pdf design and detailing of flat slab content vijay prem. 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. Design and detailing for bending moment i division of panels and bending moments flat slab panels are divided into column strips and middle strips as shown in figure 1. There are many advantages of flat slab such as increased head room, easier flow of mechanical and electrical services. Show rebar intensity, show total rebar area for strip and show number of bar of size. What is the best way to detail a flat slab, especially if you have bars that are alternating or autodesk ductname.
Suspended slabs can include flat, twoway, waffle, and ribbed framing systems. However, one of the particularities that comes first when designing. This publication seeks to introduce fe methods, explain how concrete can be successfully modelled and how to interpret the results. Twoway concrete slab with beams spanning between supports. For many years, ciria report 110 has been the standard document for the design of reinforced concrete flat slabs. Modelling a flatslab structure using fem software is simple at first glance. The presentation aims to provide clear,concise, technical details of flat slabs design. Flat slabs are slabs that are supported directly by columns without floor beams. Necessary checking such as deflection and crack control is also calculated by the software which helps to improve the accuracy of the design. Manual for design and detailing of reinforced concrete to the. You can use either of the three depending on your convenience.
References 1 sanjay p n, behavior of flat slab rcc structure under earthquake loading 2014. Reinforcement detailing of a slab is done based on its support conditions. Modeling and bending design of pointsupported flat slab dlubal. Design and detailing of rectangular flat slab panels. 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. Flat slabs can offer economical solutions to wider floor spans in a reinforced concrete building. Flat slab cad drawing dwg cadblocksfree cad blocks free. Quickly and easily specify concrete section dimensions, concrete and steel reinforcing strengths, concrete cover, reinforcement bar type, units and design codes and reinforcing bar type within a single dialog box.
Oneway wide module joist slab in the lower middle is a variation on the oneway. Slab supported on two sides and bending takes place predominantly in one direction only is called one way slab. Anchorage and lap splicing detailing of slabs, columns, beams. Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. Slab supported directly by columns are called flat slab. I came across a way of detailing reinforcement bar for flat slabs. In this construction video tutorial you will learn the method required for flat slab design or design of flat slab. The reinforcement areas are calculated automatically from the strap finite element analysis results. Mar 1, 2017 reinforced flat slab design excel sheet best online engineering resource. Using a drop panel and a column capital in flat slab. Cross sections of twoway concrete floor at the slab edge. They are also used where uses of beams are not required. V slab variable depth slab bridge design is a structural analysis and design software package developed for reinforced concrete flat or haunched slab bridges under the american association of state highway and transportation officials aashto lrfd bridge design specifications, 8th edition. A tendon is defined as sheathing duct, the strands within it and the corrosion inhibiting grease or grout filling its voids.
Mar 24, 2014 design and detailing for bending moment i division of panels and bending moments flat slab panels are divided into column strips and middle strips as shown in figure 1. Design of flat slab structures advance design graitec. I am troubled by folded slab ie a step down in flat slab. V slab variable depth slab bridge design is a structural analysis and design software package developed for reinforced concrete flat or haunched slab bridges under the american association of state highway and transportation officials aashto lrfd bridge design specifications, 8th. Slab supported on 2 sides and bending happens primarily in 1 direction particularly is known as one way slab.
Slab detailing the program calculates and details the slab reinforcement, either as an arrangement of individual bars, a pattern of prefabricated meshes, or a combination of both. Design flat plate slab in etabs and detailing in autocad. For the analysis, a linearelastic model has been used. For the purpose of this article, we will base our design basis on a strip based. Scada pro flat slab module for analysis and design is an advanced finite. Perform a quick and accurate preliminary design check considering tendons. Flat slab construction is stateoftheart structural software for the analysis and design of single and multistorey flat slabs in. Flat slab analysis and design free version download for pc. Safes ageadjusted modulus of elasticity method for flat plate slab analysis was found to be more accurate than other software when compared to actual deflections. As point supports of the flat slab, columns are used. Quickly create your placing drawings, fabrication details, bar bending schedules, and concrete quantity and material reports directly from your 3d model, which. 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. Design and detailing of flat slab with drop panel in etabs. Structural design of flat slabs to eurocode 2 structville.
How to form, pour, and stamp a concrete patio slab duration. The program calculates and details the slab reinforcement, either as an arrangement of individual bars, a pattern of prefabricated meshes, or a combination of both. The flexibility of flat slab construction can lead to high economy and yet allow the architect great freedom of form. Apr 25, 2019 22 slabs flat slabs 2016 page 025 duration. Over that time analysis methods have changed and new construction methods have been developed. Details title design flat plate slab in etabs and detailing in autocad duration 25 mins language english format mp4 size 180 mb download method direct. Reinforced concrete modeling and detailing software with proconcrete software you can model reinforced concrete with any combination of reinforcing, as 3d parametric objects. The 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. Flat slab detail dwg detail for autocad designs cad. A software has been developed with design procedures based on bs 8110 and eurocode 2, which is the design of concrete slabs. This is usually done in wide span areas of the slab being constructed by dividing the whole slab to a series of pour areas and it is intentionally applied to accommodate the easement of construction. 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. Reinforcement detailing of reinforced concrete slabs. In the show rebar intensity, the recommended area of rebar.
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