The eurocode for the design of concrete structuresec2 is likely to be published as a euronorm en in the next few. Part b of the design report presents a prestressed concrete interior girder as well as the reinforced concrete deck of a 25meter bridge. Therefore, for a single project, it may be necessary to determine loads in accordance with both design formats. Formworks or molds are considerably important for building constrictions by holding fresh concrete mixture at place until it get required strength by which the self weight can be sustained. In most cases, the slab thickness is designed as an unreinforced concrete section. Direct design method ddm for slab systems with or without beams loaded only by gravity loads.
Reinforced concrete slabs compatibility limit design. Mar 21, 20 a basic example problem showing how to design a singly reinforced concrete beam section for a simply supported beam with dead and live loading. Reinforced concrete slab design and detailing guidelines for depth of slab, loads on slab, reinforcement guide for oneway and twoway slabs as per is following are the rcc slab design and detailing guidelines. Oneway and twoway slabs oneway slabs transfer the imposed.
A copy of the tables is provided in the appendix and also. Reinforced concrete design 1 design of slab examples. Oneway simply supported slab analysis and design of the slab similar to design of simply supported beam as indicate in the previous chapter. A civil engineer must know all the aspects regarding the flat floor system.
Introduction concrete slabs on grade are a very common type of concrete construction. Design of reinforced concrete structures ii twoway slabs. The information is provided by concrete fiber solutions and while we endeavour to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the. Concrete slab rest ing on grade cont aining steel reinforcement which consists of either a welded wire fabric or deformed reinforcing steel bars. Reinforced concrete effective span centretocentre distance between supports longer dimension of a rectangular panel of slab for yield line calculations modular ratio esec design bending moment per unit width of slab modified to account for axial load moment per unit width about xaxis moment per unit width about yaxis. To facilitate its familiarisation the institution of structural engineers and. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems. Explanatory text was added to each chapter, while maintaining relevant design aids and illustrative examples. Concrete formwork loads and pressure calculations are described in this article. Design of fibre reinforced concrete beams and slabs. Design of a singly rc beam section example 1 reinforced. The information contained in this website and design tool is for general information purposes only. The most common residential foundation materials are concrete masonry i. Simply supported one way slab a rectangular reinforced concrete slab is simplysupported on two masonry walls 250 mm thick and 3.
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. The 2012 edition of the reinforced concrete design manual sp1711 was developed in accordance. Reinforcing is added to control shrinkage cracking and maximize the distance between designed joints. Design and construction of concrete formwork 75 several considerations are involved in determining an economical form construction, such as. Reinforced concrete design 1 design of slab examples and.
All load combinations were entered into the model, and the combined load effects were. Franzen department of civil and environmental engineering division of structural engineering concrete structures chalmers university of technology abstract. In the temporary condition no water will be taken into account. The high accuracy in design calculations of structures is undesirable because there is no capability of estimating many factors affecting on design. The load capacity of a slabonground is a function of its thickness, the subgrade modulus and the interaction between the slab and the subgrade. Concrete slab on grade analysis calculator for post or. Design of slab examples and tutorials by sharifah maszura syed mohsin example 1. This appendix presents design examples of the retrofitting techniques for elevation, dry floodproofing, wet. Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. Calculators for structural engineers, construction professionals and steel building specifiers. Tm 580912 concrete floor slabs on grade subjected to. This design should always be used unless approval to use a thinner deck is obtained from the state bridge engineer. Flat slab system is an important division of concrete floor system. Anaiysis of construction loads on concrete formwork.
Determine the loads based on the buildings parameters section d. Fip 8 design and specification of fiberreinforced concrete. Sep 03, 2011 reinforced concrete effective span centretocentre distance between supports longer dimension of a rectangular panel of slab for yield line calculations modular ratio esec design bending moment per unit width of slab modified to account for axial load moment per unit width about xaxis moment per unit width about yaxis. Examples c1 through c5 are a set of examples that illustrate the elevation of a singlestory home with a crawlspace. Thermal calculations should be produced for structures in. Oneway concrete slab design part 1 concept explained. Due to simplicity of design and construction, the concrete slab structure is relatively. The load capacity of a slab onground is a function of its thickness, the subgrade modulus and the interaction between the slab and the subgrade. These calculations shall govern the structural portion of the working drawings. However, where any discrepancies occur between these calculations and the working drawings, the engineer shall be notified immediately so proper action may be taken.
This example will use the standard deck slab design as explained in the design guide. The construction and design of concrete slabs on grade d. This calculator estimates the required amount of cement, sand and aggregate stone for mixing on site for a given area of concrete. Tm 580912 concrete floor slabs on grade subjected to heavy. In the temporary condition no water will be taken into. Before we start the design of slabs, let us see what our words says related to. F is the total design ultimate load on the strip of slab between adjacent columns considered 1. Concrete floor slabs on grade are subjected to a varie ty of loads and loading conditions. Twoway joist concrete slab floor waffle slab system. Reinforced concrete slab design and detailing guide is456. They may be supported on two opposite sides only fig.
For 1m slab width, moment, shear force, oneway continuous slab for continuous slab, moment and shear force can be obtained from table 3. Design steel beam verification of bending resistance r9 to r10 7 shear resistance r11 to 12 8 serviceability limit state verification r12 9 check bearing stress within concrete padstone under the steel beam r 10 check bearing stress under the concrete padstone r14 11 replacement roof slab construction sequence r15. The prestandard env for ec2 has now been available since 1992. Design calculations, regarding moment and shear resistance in ultimate limit state.
Example calculations for this and all other example problems the following data from the canam united steel deck design manual and catalog of steel deck products will be used and are worked using lrfd methodology. Unlike part a that focuses on the design procedure, detailed calculations with respect to three different design standards were conducted in this part of the design report. Designing concrete mixtures there are three phases in the development of a concrete mixture. Some material specifications use the allowable stress design asd approach while others use load and resistance factor design lrfd. Manual for design and detailing of reinforced concrete to the.
Grdslab concrete slab on grade analysis spreadsheet. Unlike part a that focuses on the design procedure, detailed calculations with respect to three different design standards were conducted in this part of. Floor slab design floors are designed as slabs on grade. The slab has to carry a distributed permanent action of 1. The concrete floor slab system shown below is for an intermediate floor to be. Structural design calculations project south kensington station stabilisation permanent works to upper roof project no. Design and investigation of concrete foundations, mats, combined footings, pile caps, slabs on grade. The following calculations will consider the worst case. Oneway and twoway slabs university of asia pacific. Online concrete slab on grade analysis calculator for slab subjected to interior concentrated post or wheel loading assuming slab is reinforced for shrinkage and temperature only. Asce, secb course content slab on grades construction. Aci318 code provides two design procedures for slab systems. Manual for design and detailing of reinforced concrete to the september 20 code of practice for structural use of concrete 20 2. The concrete slab on grade is the most popular foundation type in the southeast.
Unit strip width, b 12in the oneway slab reinforcement is to be placed on top of the oneway joist top reinforcement. Design technique and philosophy design was conducted according to asce705 and the aisc steel manual th edition. Bending will take place in the two directions in a dishlike form. Cost and feasibility of adapting materials on hand vs. The lateral loads are independently resisted by shear walls. Pdf the main objective of this project is to analyze and design a. Following are the rcc slab design and detailing guidelines. The slab thickness depends on the type of loads on the floor slab. Flat slab analysis and design pdf flat slab design pdf 1. Concrete formworks are subjected to various loads and pressure. Calculations of beams and reinforced concrete slab. Oneway and twoway slabs oneway slabs transfer the imposed loads in one direction only. A2 slab thickness design by wri method a3 design examples using coe charts a4 slab design using posttensioning a5shrinkagecompensatingconcreteexamples chapter lintroduction l. The third chapter presents the design calculations of slab and drawing of building.
This application can be used to make quick parameters calculations of beams and reinforced concrete slab not only in the office but also at the construction site. Calculate the live load that can be carried by the slab shown below, if it is reinforced. Retaining wall design temporary condition the following calculations will consider the worst case. A basic example problem showing how to design a singly reinforced concrete beam section for a simply supported beam with dead and live loading. This free concrete calculator estimates the amount of concrete necessary for a project, and can account for different shapes and amounts of concrete. Therefore, for a single project, it may be necessary. Reinforced concrete slab design and detailing guidelines for depth of slab, loads on slab, reinforcement guide for oneway and twoway slabs as per is 456. A six storey building for a commercial complex has plan dimensions as shown in figure 1. The design procedure includes determini ng slab thickness based.
Manual for the design of reinforced concrete building. The final example, example c8, demonstrates how to design a cantilevered. Floor slabs can range from a simple residential basement slab to a heavyduty industrial floor. In normal slab and beam or framed construction, torsional rigidity of rc. In general, the design of slab become more simpler because compression reinforcement are often not required and the shear stress are usually low except when there are heavy concentrated load. Since doe method presently is the standard british method of concrete mix design, the procedure involved in this method is described instead of out dated road note no 4 method. The application of these recommendations is illustrated through numerical examples. Design of reinforced concrete retaining wall toe bs 8002. Normally for ultimate limit state no specific calculations are necessary for thermal loads. The structural calculations included here are for the analysis and design of primary structural system. Preservativetreated wood, precast concrete, and other methods may also be used. Manual for design and detailing of reinforced concrete to. Design of slab examples and tutorials by sharifah maszura syed mohsin. Complete design of a home typically requires the evaluation of several different types of materials as in chapters 4 through 7.
Flat slab analysis, design and detailing pdf civil engineering. Concrete slab on grade analysis calculator for post or wheel. Flat slab analysis, design and detailing pdf civil. The building is located in seismic zone iii on a site with medium soil. Twoway flat plate concrete floor system design structurepoint.
Concrete slabs are often carried directly by columns without the use of beams or girders. Twoway joist concrete slab floor waffle slab system analysis and design design the concrete floor slab system shown below for an intermediate floor with partition weight of 50 psf, and unfactored live load of 100 psf. These materials are originally located at different websites. Design of reinforced concrete structures ii twoway slabs 1 1. Wheel load design calculation details concrete fiber solutions. A civil engineer should study these lectures and materials for structural engineering acumen. Calculate additional slab reinforcement at columns for moment. Chapter 4 uses the lrfd method for concrete design and the asd method for masonry. Explore other calculators related to housing or building, as well as hundreds of other calculators addressing finance, math, fitness, health, and more. The construction and design of concrete slabs on grade. This chapter provides load combinations intended for each method. Istructe ec2 concrete design manual 9 foreword the eurocode for the design of concrete structuresec2 is likely to be published as a euronorm en in the next few years. These loads shall be applicable for the design of buildings.
For the design of slabsonground with fiber reinforcement, aci 360r chapter 11 provides detailed information and calculations. Reinforced concrete slab design guidelines a effective span of slab. In the first part of this series, we explain the concept of one way load transfer in concrete slabs and how to determine the minimum slab thickness based on deflection criteria. Design of fibre reinforced concrete beams and slabs master of science thesis in the masters programme structural engineering and building performance design ammar abid, kenneth b. A2slab thickness design by wri method a3design examples using coe charts a4slab design using posttensioning a5shrinkagecompensatingconcreteexamples chapter lintroduction l. Concrete mix design step by step full calculation 14012019 mike mahajan concrete technology, construction materials one comment concrete mix design is the process of detrmining right proportions of cement, sand and aggregates for concrete to achieve target strength of concrete.
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