Flat plate concrete floor system does not use beams between columns or. Introduction benefits design considerations design methodology analysis of flat slab detailing. Reinforcement detailing for opening in flat slab and beam. Explore flat slab with free download of seminar report and ppt in pdf and doc format. Manual for design and detailing of reinforced concrete to the september 20. Typical detailing of reinforcements in beams and slabs. Design considerations for reinforced concrete flat slab floor system harshal deshpande1, radhika joshi2. Rationalisation of reinforcement, design and installation processes are considered. Department of mechanics, materials and structures english courses reinforced concrete structures code. Perform flexural analysis and design for a typical design strip along grid 2 by utilizing the two methods permitted in chapter of aci 318, direct design method ddm, and equivalent frame method efm.
Flat slab provided reinforcement interpretation of results. Flat slab analysis, design and detailing pdf civil. The investigation shows that, the weight of flat slab structure is less compared to conventional slab structure. Perform flexural analysis and design for a typical design strip along grid 2 by utilizing the two methods permitted in chapter of aci 318, direct. Reinforcement calculation detailing beams beam 2 case 1 beam b case 3 slabs slab ab12 case 1 columns column b2 case 2.
Punching of flat slabs design for shear at the column heads. Flat slab provided reinforcement interpretation of results i am having a problem with the consistency of results displayed by different methods within the slab provided reinforcement view. Twoway flat plate concrete floor design a plan of a flat plate concrete floor without spandrel beams is shown in figure 1. Pdf flat slab structural systems are amongst the oldest methods to. This educational solved example for the design of reinforced concrete flat slab with drop panel, and check for punching shear. Reinforcement detailing of a slab is done based on its support conditions. Manual for design and detailing of reinforced concrete to the.
Slab design will consider all aspect like bending moment, shear force, cracking and area of reinforcement. Finally, an example of a flat slab floor system is presented to illustrate the practice. Influence of the top reinforcement detailing in the. Reinforcement design is one of the critical parts of flat. The listed characteristic values in the table are based on local studies. As reinforcement detailing of flat slab is simple, it is easier to place. As reinforcement detailing of flat slabs is simple it.
Find effective depth d, assuming reinforcement diameter. 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. Flat plate slab is that in which slab is directly supported on columns without column capital, drop panel or beams. Sep 03, 2011 draw panel of slab and indicate maximum design moments, shears and in plane loads, if any, per unit width of slab. This is further explained in a companion best practice guide, rationalisation of flat slab reinforcement. Anchorage and lap splicing detailing of slabs, columns. Flat slab analysis, design and detailing pdf civil engineering. Pdf recommendations for reducing progressive collapse. For better view, please read this post in landscape mode if you are on the mobile device.
Dear all, i face a difficulty in doing the reinforcement details for the flat slab with opening. Design of flat slabs for punching european and north. Reinforcement detailing of reinforced cement concrete slabs. Pdf design of reinforced concrete flat slab with drop. Reinforcement for internal panels reinforcement are arranged in 2 directions parallel to each span. Manual for design and detailing of reinforced concrete to the code.
Design of flat slabs for punching european and north american practices. Architectural engineering senior thesis washington park condominiums final. Reinforcement detailing of reinforced concrete slabs. However, mainly as far as the stirrups are concerned, the amount of placed rebars is not as large as it is in beams. Flat slab detail dwg full project for autocad designs cad.
Design manual to bs8110 bs8110 general detailing rules. Influence of stirrup detailing on punching shear strength. In this post, we are going to explain how to calculate steel quantity for the slab. At the point when the depth of web or rib in a beam crosses 750 mm, the side face reinforcement of cross sectional area at the very least 0. Although not included in astm c478, plants may use astm a706 reinforcing steel when welding reinforcing mats. Rationalised reinforcement in the insitu concrete building at cardington this guide provides recommendations for the efficient and economic reinforcement of concrete flat slabs. To optimise the slab thickness, consider all factors such as the method of design, the. Behavior and reinforcement of oneway slab the structural frame consists of four columns, two beams and one slab. A civil engineer must know all the aspects regarding the flat floor system.
Content introduction benefits design considerations design methodology analysis of flat slab detailing. Design considerations for reinforced concrete flat slab floor system. Influence of stirrup detailing on punching shear strength of. Draw panel of slab and indicate maximum design moments, shears and in plane loads, if any, per unit width of slab. A bentup bar called as crank bar is provided to make rcc slab safe from compressive stresses. Flat slab types, uses, advantages and disadvantages. Manual for the design of reinforced concrete building. Department of mechanics, materials and structures english. Aci318 14 detailing for top and bottom reinforcement in flat slab. Rationalisation of flat slab reinforcement construct concrete. The rib reinforcement follows the same rules with the beam reinforcement. Between the ribs, the slab is usually reinforced with a common wire mesh.
Detailing of reinforcements in beams and slabs plays an important role in providing strength, durability and cost optimization. If you require any further detailed advice regarding the design and detailing of punching shear reinforcement to either the ec2 or bs8110 standards, please do not. Rationalisation is the elimination of redundant variation. Reinforced slab is a flat element that used in floors, roofs and. Two experimental slabs were tested a and b with different types of reinforcement detailing to study the influence of the top reinforcement concentration in the behaviour of flat slabs. Flat slab analysis, design and detailing pdf flat slab system is an important division of concrete floor system.
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. Bar bending schedule plays a vital role in finding the quantities of reinforcement in structure. Several techniques have been used to improve the punchingshear performance. Dissemination of information for training brussels, 2021 october 2011 25 eurocode 2 background and applications. As no beam is used, floor height can be reduced and consequently the building height will be reduced. Design considerations for reinforced concrete flat slab. Different types of shear reinforcement used at column heads. 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. From assembly plant, the construction system of the flat slab of a commercial project is detailed. The reinforcement for the column strip was design for the direction from easttowest only. The calculated punching shear capacity and relevant reinforcement detailing depend much more on the code applied than the flexural reinforcement for example. Design considerations for reinforced concrete flat slab floor.
Usually, when a slab is supported by a beam the support is considered to be pinned. A flat slab is a reinforced concrete slab supported directly by concrete columns without the use of beams. Anchorage and lap splicing detailing of slabs, columns, beams. Flat slab types, uses, advantages and disadvantages what is flat slab. Engineering society its the first platform for all engineers we share good technical articles and free pdf ebooks and free excel spreadsheets for all engineers. Slab supported on two sides and bending takes place predominantly in one direction only is called one way slab. Ec2 webinar autumn 2017 lecture 52 designing for shear in slabs when shear reinforcement is not required e. In line with the objectives of the egan report, the primary objective of the. Ec2 webinar autumn 2016 lecture 52 designing for shear in slabs when shear reinforcement is not required e. 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. Two experimental slabs were tested a and b with different types of reinforcement detailing to study the influence of the. The real cost parameter is the ratio of costs of labor relative to material.
Influence of the top reinforcement detailing in the behaviour. How to detail reinforcements of twoway slabs quora. This design is a complete flat plate slab design, from shear to bending along with design of columns and shear head reinforcement. The steps i have taken to get to where i am after creating model etc. Advantages and disadvantages of flat slabs civil engineering. Rationalisation of flat slab reinforcement alternative punching shear reinforcement for flat slabs approaches to flat slab design. Slab reinforcement and beam reinforcement details daily.
It is important to know the influence of the longitudinal reinforcement distribution in the flat slab behaviour. In order to find out the bar bending schedule for slab or steel reinforcement in slab, i recommend you to learn basics of bar bending schedule and how to adopt concrete cover for different components of a building. Flat slab seminar report, ppt, pdf for civil engineering. Manual for design of slabs, pile caps and footings. Buildinghow products books volume a the reinforcement. The reinforcement provided for other purpose can also act as effective ties if. Drawing labels, details, and other text information extracted from the cad file translated from galician. The thickness of slab over columns is also increased to support heavy loads and the thickened part of the slab is called drop panel. Detailing solid slabs flat slab design includes flexure worked example exercise punching shear.
In one way slab, major reinforcement is along the side of smaller direction and the reinforcement along the side of longer direction is known as distribution steel. Reinforcement details of concrete beams and slabs should specify clearly about cover to reinforcement, length of reinforcement, curtailment of reinforcement, number and diameter of reinforcement to be provided. First, find number of rods required for main reinforcement and distribution. The thickness of the slab is sufficient if shear reinforcement is used. Reinforcement conventional reinforcing steel typically used in base slabs and flat slab tops. Aug 30, 2014 the design i am going to share with you today is design of flat plate slab as by definition. The rest of the floor can be slightly thinner with less dead weight. The design i am going to share with you today is design of flat plate slab as by definition. The opening that the architect wants to put is for a scupper drain which have a width of 150 on plan and a depth of approximately 100mm the drain is just to connect to the oil interceptor. The study concludes, flat slab structures are the best solution. Step 3 cover to reinforcement determine cover required to reinforcement as per tables 11.
Reinforcement detailing of isolated footing in safe 2016 duration. In the past, several investigations took place but no theory so far could describe the punching shear behavior of flat slabs with shear reinforcement satisfactorily. The slabs possessing ratio of longer length to its smaller length lylx higher than 2 is known as one way slab or else as two way slab. Flat slab is an rcc slab built monolithically with supporting columns and reinforced in two or more directions. The institution of structural engineers the institution of civil engineers march 2000 manual for the design of reinforced concrete building structures to ec2. Manual for design and detailing of reinforced concrete to. Slab supported directly by columns are called flat slab. For b oth one way and two way slab with an example.