Precast concrete options are cast in a factory environment and include the following prestressed concrete options. Concrete blocks technical data short description concrete block construction has gained importance and has become a valid alternative to fired clay bricks. This guide presents information on the design of slabs onground on aci 318r, primarily industrial floors. After erecting the slabs and columns of a story, the columns and floor. Aci318 code provides two design procedures for slab systems. Also explore the seminar topics paper on bubble deck 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. Oct 11, 2018 slab design and preparation is critical to a projects success and requires close attention to both structural and waterproofing concerns during the design process. Hollow slabs with innovative types of voids manmade. An attempt has been need in this thesis to understand the various types of cracks occurring in.
Concrete slabs are often carried directly by columns without the use of beams or. Types of concrete and its uses concrete are classified into different types. It also specifies requirements relating to delivery, conformity testing, production control. Understanding concrete slab types for waterproofing and. The reinforced concrete floor slabs fit the clear span between columns. Cracks in reinforced concrete columns due to shrinkage of concrete 3. Waffle slab construction process includes fixing forms, placement of pods on shuttering, installation of reinforcement between pods, installation of steel mesh on top of pods, and pouring of concrete. Presents basic theory of prestressed concrete along with the load balancing, workingload and ultimateload methods for prestressed concrete design. Footing systems reference as 2870 residential slabs and footings construction and bca.
Guide for the design and construction of concrete parking lots reported by aci committee 330 aci 330r08 concrete parking lots serve many kinds of public facilities, commercial developments, businesses, and multifamily housing projects. Slabs are constructed to provide flat surfaces, usually horizontal in building floors, roofs, bridges, and other types of structures. The choice of type of slab for a particular floor depends on many factors. Design of various types of slabs and their reinforcement. Shear strength of beamless slabs usually a controlling factor. The slab may be supported by walls or by reinforced concrete beams usually cast monolithically with the slab or by structural steel beams or by columns, or by the ground. Punching shear strength of concrete flat plate slabs. Waffle slab grid slab it is a type of reinforced concrete slab that contains square grids with deep sides.
The design of reinforced concrete 10th edition pdf free download file has been uploaded to an online repository. After it has thoroughly set and fully hardened it is called set concrete or just concrete. The slab is very important structure member in building and slab is one of the largest member consuming concrete. Concrete slabs are widely in use as floors not only in industrial and residential buildings but also as decks in bridges. 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. Each has a designed strength and minimum cement content. Evaluating cracking in concrete 7 thermal stresses volume differentials are likely to develop in the concrete when different temperatures occur across a concrete section. A numerical model for material nonlinear analysis of concrete slabs supported on soil is described in this work. Various types of precast concrete slabs free download as powerpoint presentation. Manual for design and detailing of reinforced concrete to the. Tests on concrete concrete slump test, compression test for. Offering an essential background for a thorough understanding of building code requirements and design procedures for slabs, reinforced concrete slabs, second edition provides a full treatment of todays approaches to reinforced concrete slab analysis and design. Depending on the size of the slab, control or expansion joints may be installed at regular intervals, as well, to allow for the natural growth and contraction of concrete due to heat and the elements.
Comprehensive, uptodate coverage of reinforced concrete slabs from leading authorities in the field. May 31, 2010 in high rises buildings and skyscrapers, thinner, precast concrete slabs are slung between the steel frames to form the floors and ceilings on each level. Precast is utilized to construct both the superstructure and substructures of all types of bridges. Flat slab analysis and design designs beamless concrete slab floors flat slab or waffle slab in accordance with aci 318. This site is like a library, use search box in the widget to get ebook that you want. Of course, all concrete is considered structural, since its at the core of most construction projects. Beamless slabs beamless slabs are supported only on columns and are applied mostly in large industrial and. Pdf performance of concrete slabs with different reinforcing. Concrete slabs also are commonly made from concrete with a higher psi than sidewalks. It is important to understand how different types of concrete slabs are applied to help project teams design and construct the right type of slab for longterm performance.
The slab critical sections for several support geometries are shown in fig. The sleeper slab is finished smooth and allowed to cure. It addresses the planning, design, and detailing of slabs. As2870 is based upon inspecting site to determine soil type and designing footing to suit both foundation and structure to be built.
Dec 30, 2019 download design of prestressed concrete structures pdf book 3rd edition from design of prestressed concrete structures. Understanding different concrete slab problems and defects. They are provided in theatres, factories, and mills, shopping complex and other buildings. The most common types of cement are type gp and type gb. Concrete slab types construction, cost, and applications. Direct design method ddm for slab systems with or without beams loaded only by gravity loads and. Various types of concrete have been developed for specialist application and have become known by these names. Now, in this section of the article, you will be able to get access to the design of reinforced concrete 10th edition pdf free download file in. The big advantage is flexibility in methods of manufacturing. Concrete handbook in the section on precast floor systems is. Another type of precast system is a slab column system that uses horizontal prestressing in two orthogonal directions to achieve continuity. The floor system of a structure can take many forms such as in situ solid slabs, ribbed slabs or precast units. The slab may be supported by walls, by reinforced concrete beams usually cast monolithically wit.
They generally require more reinforcing steel and structural concrete than do girder type figure 9. The frp strengthening materials are treated as additional reinforcement with different material properties. This practical design manual intends to outline practice of detailed design and detailings of reinforced concrete work to the code. A concrete slab is one of the most common foundation types found in residential home construction. They are most commonly used in foundations or domestic flooring. Concrete blocks are produced in a large variety of shapes and sizes. Details of these various types of concrete, their properties and applications are discussed. Besides, one can learn how concrete slab disperses loads to the beams. Wall street business magnate stephen chu, winner of the strathmores whos who registry honoring the most successful business tycoons in the world, says the demolisher betting system lived up exactly to its billing. Flat slab analysis and design free version download for pc. While other materials are occasionally used when building home foundations, concrete slabs.
Manual for design and detailings of reinforced concrete to. Cracks in plain and reinforced concrete posses a challenging to civil engineers from the six decades. The new edition of the concrete structures standard as 360020001 will allow 500 mpa reinforcing steels to be used in design. This should be done as soon as discharge of the concrete commences. A reinforced concrete footing fig 3 supports a 12x12 column reaction p100 kips at the top of footing. Longitudinally reinforced slab bridges have the simplest superstructure con. Reinforced concrete slabs are used in floors, roofs and walls of buildings and as the decks of bridges.
Concrete slabs are commonly divided into the following types. The precast concrete column elements are 1 to 3 stories high. Twoway concrete slabs with openings the static system and the design of reinforcement. Flat slab analysis, design and detailing pdf civil. P 100k l w frost line soil unit weight 110 pcf 40 20 slab on grade, surcharge weight 120 psf.
The common types of failure modes in composite slabs are flexural failure, shear failure and combination of flexuralshear failure mechanism. Serviceability requirements must be considered, and deflections are sometimes difficult to control in reinforced concrete beamless slabs. Bubble deck slab seminar report, ppt, pdf for civil. Construction with reinforced precast concrete elements. Such software provides the user an opportunity to select their preferred method of mix design and enter the material data to arrive at proper mix designs. The usual method of rectifying this disadvantage is to incorporate some kind of reinforcement, which enables concrete slabs to be used for a broad range of spans and loading conditions. Thus, flexural design may start with selecting a relatively low steel ratio, say about 0. Download design of reinforced concrete slabs in pdf. Slabs are constructed to provide flat surfaces, usually horizontal, in building floors, roofs, bridges, and other types of structures. The only difference is the initial strains that are present in the concrete and reinforcement, due to the dead load at the time of applying the frp. Design of prestressed concrete structures pdf download free. Some types of commercial forms are designed to span relatively long distances without intermedia somete supports. Design of reinforced concrete 10th edition pdf free. Pre stressed slab column system another type of precast system is a slab column system that uses horizontal pre stressing in two orthogonal directions to achieve continuity.
Based on the soil test, allowable bearing capacity of soil is 5 ksf. This pdf file contains a chapter of 23 pages with various aspects of flat slabs including four example of flat slab design. Types of concrete general concrete general concrete is produced to british and european standards to guarantee high quality. There are, however, m any variations of this procedure and a few are listed below. Steelreinforced slabs, typically between 100 and 500 mm thick, are most often used to construct floors and ceilings, while thinner mud slabs may be used for exterior paving see below.
Reinforced concrete buildings series design booklet rcb2. Structural concrete is concrete that will normally be placed into reinforced structural elements such as beams, columns, walls, and slabs small enough that heat generation isnt a problem. Design methods are given for unreinforced concrete, reinforced concrete, shrinkagecompensating concrete, posttensioned concrete, fiberreinforced concrete slabs onground, and slabs onground in refrigerated. Concrete mixes can also be designed using software programs. To control flexural cracking in slabs, the concrete structures standard as 36001994 required only the maximum spacing of tension reinforcement to be limited, and often this did not guarantee acceptably narrow cracks. The slab critical section, used for slab strength determination, is the same as that specified in aci 318, although the definition has been modified to clarify that slab critical sections for rectangular supports may be assumed to have a rectangular shape. Economy of construction is obviously an important consideration, but this is a qualitative argument until. Workers placing and vibrating concrete on a bridge deck including epoxycoated. Evaluating cracking in concrete bluey technologies. The concrete then cracks when the tensile stresses imposed by a change in volume differential exceed that of its tensile strength. Different types of concrete are produced based on the constituent material, mix design, the method of construction, area of application, form of hydration reaction.
Blended cements contain portland cement and more than 5% of either fly ash, ground slag, silica fume, or a combination of these. This part of bs 8500 specifies a number of basic requirements for concrete and its constituent materials, and gives specific requirements relating to the types of concrete listed in bs 85001. Fifteen tests on high strength concrete slabs with rectangular supports and. Various types of rcc slabs civil engineering projects.
The sample should be representative of the concrete supplied. Explore bubble deck slab with free download of seminar report and ppt in pdf and doc format. While making structural drawings of the reinforced concrete slab, the slabs are abbreviated to r. Structural concrete structures reinforced concrete construction. Finishing is the operation of creating a concrete surface of a desired texture, smoothness and durability. In this case study the solution adopted for the slab is the precast minos slab shown on figure 3. Department of mechanics, materials and structures english. The slab may be supported by walls or by reinforced concrete beams usually cast. For span from 5 to 9m thin flat slabs are the preferred solution for the construction of in situ concrete frame building, where a square or near square grid is used. A polyethylene sheet is placed over the slab prior to placing the pavement or approach slab.
In this model, the cracked concrete is regarded as cracks with concrete between cracks. House design and shape must be designed before footing design can occur. Manual for design and detailing of reinforced concrete to. Aci 360r pdf guide to design of concrete slab foundation. They primarily accommodate parked vehicles, but may also provide maneuvering areas and access for delivery. Concrete freshly prepared concrete till it has not yet set is called wet or green concrete. A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. The behaviour of the concrete between cracks is simulated by the conventional theory of plasticity. There are different types of concrete slabs, and different types of reinforcing used in slabs. Cip 14 finishing concrete flatwork what is finishing. The minimum thickness can be determined by many factors. When the load acting on the slab is large or clear span between columns is more, the slab thickness goes on increasing.
Concrete has numerous applications in building construction, but its use for horizontal slabs is limited by its relatively high density which reduces the maximum span. The finish can be strictly functional or decorative. Background information on design theories is followed by discussion of the types of slabs, soilsupport systems, loadings, and jointing. The early reinforced concrete flat slabs all had drops, and columns with capitals, and were considered to be the structure of choice for warehouse construction and heavy loads. Each type of cement will produce concrete with different properties. The latter consists primarily of reinforcing with deformed steel bars rebar, that can be from 14 in. Precast concrete floor slabs are lifted from the ground up to the final height by lifting cranes. Oneway and twoway slabs oneway slabs transfer the imposed. Introduction, definitions flat slabs are twoway slabs supported by pointlike supports. The slab concrete compressive strength ranged from 6. Download yield line analysis of slabs or read online books in pdf, epub, tuebl, and mobi format. Emphasis is given on setting up plans for beam sections which include different types of beams like simple beam, continuous beam, cantilever beam etc. Background information on design theories is followed by discussion of the types of slabs, soilsupport systems, loadings, and jo.
This is a flat, uniform foundation thats made of sturdy concrete on level ground. Click download or read online button to get yield line analysis of slabs book now. Download aci 360r10 guide to design of slabsonground pdf. In high rises buildings and skyscrapers, thinner, precast concrete slabs are slung between the steel frames to form the floors and ceilings on each level. Flat slab analysis, design and detailing pdf civil engineering. A mixture of cement and water is called cement paste. Cracks in reinforced concrete columns due to increased load on the slab 4. Yield line analysis of slabs download ebook pdf, epub.
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