Foreword the reinforced concrete design manual sp1711 is intended to provide guidance and assistance to professionals engaged in the design of castinplace reinforced concrete structures. Examples of regions with discontinuity in geometry or action. Calculation is usually based on strip of slab 1m wide. Design of members and structures of reinforced concrete is a problem distinct from but. Guide to reinforced concrete design crack control of slabs part 1. These flat slabs may be designed as continuous frames. Check the applicable joist dimensional limitations as follows. Download concrete cantilever slab design example doc. Design in reinforced concrete to bs 8110 1 pdf document. It is connected to a landing at upper part and supported by a beam at the end of the landing.
Introduction to concrete slab design reinforced concrete. Chapter 3 design of rectangular beams and oneway slabs. Anderson, a leading consultant on the subject of reinforced concrete slabs onground. Nov 25, 2015 simple span reinforced concrete slab bridge rating. In a typical reinforced concrete building, reinforcement bars arranged as mats are incorporated into a concrete plate of minimum thickness 125 mm to form a reinforced concrete solid slab. Structural design of a reinforced concrete residential building. Design of beam examples and tutorials by sharifah maszura syed mohsin example 1. Small span and a concrete slab design example of such an arrangement is an indeterminate beam used approximate manual design for example problem of reinforced concrete construction time and pure article helpful to the supports. Bending will take place in the two directions in a dishlike form. Manual for design and detailing of reinforced concrete to. The slabs included a reinforced concrete slab, a standard concrete.
Usually a slab is a broad, flat plate, with top and bottom surfaces parallel or nearly so. The provision of adequate reinforcement, slab thickness, and proper detailing to satisfy ultimate and serviceability. Reinforced concrete sk 33 section through slab showing stress due to moment. Concrete slab rest ing on grade cont aining steel reinforcement which consists of. Course outline civil utm concrete design i skaa 3352 concrete third edition macginley t j choo b s reinforced concrete design theory and examples 3 rd edition.
This structural design process has been carried out under use of bs8110 design code of practice. Negativemoment cracking around columns is sometimes a problem with flat plates, and again a column capital may be useful in its control. Ufc 332006a concrete floor slabs on grade subjected to. Asce, secb course content slab on grades construction. Title reinforced concrete slab design using the empirical method publication no. Floor slabs can range from a simple residential basement slab to a heavyduty industrial floor. Strength of reinforced concrete sections location of strength rebar relative to compressive face of concrete d the project calls for. Design example of reinforced concrete twoway solid slabs using bs8110 code part 2 simply supported twoway slab. Design a straight flight staircase in a residential building that is supported on reinforced concrete walls 1. Reinforced concrete design 1 design of slab examples.
Reinforced concrete slabs are used in floors, roofs and walls of buildings and as the decks of bridges. Tm 580912 concrete floor slabs on grade subjected to heavy. The publication has derivations of equations and design examples that show how as steel area increases more crack width control is gained. Shear has been investigated in structural concrete from its early. Ce 479 fall 05compositefloor decks purdue university. Concrete slab behave primarily as flexural members and the design is similar to that for beams, although in general it is somewhat simpler because. Association for reinforced and prestressed concrete, on behalf of the the italian.
Slabs may span in one direction or in two directions and they may be supported on monolithic concrete beams, steel beams, walls or. Reinforced concrete design 1 design of beam examples and. For more critical slabs, evaluation may involve a sitespecific evaluation by a professional engineer. The size of each strip is defined using specific rules. Design of reinforced concrete structures ii twoway slabs 1 1.
If the slab is square and restraints similar along the 4 sides then the load will be distributed equally in both direction. Chapter 6 design of unreinforced concrete slabs, p. Ce 433, reinforced concrete design summer 20 example slab design 1 2 material properties geometry compressive strength of concrete fc 5,000 psi span length of slab beam spacing l 18 ft center to center coefficient for depth of stress block 1 0. The majority of the structural optimization applied on reinforced concrete rc structures involves heuristic methods such as genetic algorithms, threshold accepting, tabu search, etc. Reliabilitybased calibration of design code for concrete structures. The construction and design of concrete slabs on grade d. For example in design of steel structures, this allowable stress will be in the elastic. This guide covers the design and construction of composite slabs and beams, and. Concrete slab resting on grade containing minimal distributed steel, usually of welded wire fabric wwf, for the purpose of limiting crack width due to shrinkage and temperature change. Calculation of the moment capacity of a given section. 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.
As 3600 design august 2000 reinforced concrete buildings. Sci p300, composite slabs and beams using steel decking. Structurepoint, formerly the pca engineering software group, offers concrete design software programs updated to aci 31814 for concrete buildings, concrete structures and concrete tanks. The floor system of a structure can take many forms such as in situ solid slabs, ribbed slabs or precast units. Design of reinforced concrete twoway solid slabs part 2. Joint research centre, via enrico fermi 2749, tp 480, 21027 ispra va, italy. A reinforced concrete slab is built integrally with its supports and consists of two equal spans, each with a clear span of 15 ft. Reinforced concrete design i objectives at the end of this lecture, students will be able to classify slab systems analyze oneway slabs using strip method of analysis for flexure design oneway slab system for flexure 3 department of civil engineering. Worked examples presented at the workshop bridge design to eurocodes, vienna, 46. Aci 360r10 guide to the design of slabs onground 2. Reinforced concrete structural software includes programs for column design pcacolumn, beam design pcabeam, slab design pcaslab, wall design pcawall, mat design pcamats, foundation design. Specifications for gfrp reinforced concrete, 2nd edition. At the end lower the stair supported by a beam and continuous with the floor slab. Tm 580912 concrete floor slabs on grade subjected to.
Large live loads and small limits on permissible deflections may force the use of large column capitals. Since this example is presented in a mathcad document, a user can alter. Reinforced concrete ptd process tasks perform a hazard analysis incorporate safety into the design documents make a cad model for member labeling and erection sequencing photo courtesy of thinkstock adapted from toole 2005. According to the interpretative document n 2 safety in case of fire.
Frp reinforced concrete slabs a comparative design study. Download concrete cantilever slab design example pdf. Based on the test information the design rational shall be. Simply supported one way slab a rectangular reinforced concrete slab is simplysupported on two masonry walls 250 mm thick and 3. Manual for design and detailing of reinforced concrete to september 20 the code of practice for structural use of concrete 20 contents 1. The prestandard env for ec2 has now been available since 1992. The preparation of this document was funded and commissioned by the metal. Concrete slab resting o n grade containing minimal distributed st eel, usually of weld ed wire fabric wwf, for the purpose of limiti ng crack width due to shrinkage and temperature change.
Especially, computations have been made by use of bs 8110 based spreadsheets. The construction and design of concrete slabs on grade. The publication of the document is at the request of the relevant centc250 sub. Notes author staff bridgesight software sponsor bridgesight software. A sample analytical method for bearing resistance calculation. There is a nominal strength that is reduced by a factor which must exceed the factored design stress. Design examples pca structurepoint reinforced concrete. Structural design standards for reinforced concrete are established by the building code and commentary aci 31811 published by the american concrete institute international, and uses strength design also known as limit state design. The slab may be in uniform thickness supported on simple columns. Find the following parameters for design moments in step 2 per unit width step 4 note. Dismantle props and remove timber plates on completion of installation of permanent steel beams. To facilitate its familiarisation the institution of structural engineers and. Design of slab examples and tutorials by sharifah maszura syed mohsin example 1. Concrete slab resting on grade containing steel reinforcement which consists of.
Straight staircase design a reinforced concrete staircase for office use is shown in figure 1. The portland cement associations notes on aci 318 contain an excellent discussion of the principles behind the aci 318 design requirements and an example of the design and detailing of a framewall structure. Atena program documentation, part 1, atena theory manual. Aci 360, design of slabs ongrade, refers to this as a type b slab. The wire reinforcing institute recommends the use of the subgrade drag theory for slabs up to 150 feet in length. Manual for the design of reinforced concrete building.
We do not need to define any beam shapes since we are using a reinforced concrete slab. A flat slab is a reinforced concrete slab s upported directly on and built monolithically with the columns, the flat slab is divided into middle strips and column strips. Sep 03, 2011 reinforced concrete sk 33 section through slab showing stress due to moment. Fip 8 design and specification of fiberreinforced concrete. A c d b l x l y the slab is supported on all four of its sides, it effectively spans in both directions. Ce 433, reinforced concrete design summer 20 example slab design 2 2 coefficient from aci 8. Accordingly, main reinforcement is required in the two directions. Bibm and ermco are delighted to make these authoritative documents available to design engineers, software developers and all others with an interest in promoting excellence in concrete design throughout europe. For consistency, many of the numerical examples are based on a fictitious sevenstory reinforced concrete building. Subgrade for concrete slabs is the natural ground, which is typically prepared by grading and compaction.
Design the slab, following the provisions of the aci code. The composite slab shall be designed as a reinforced concrete slab with the steel deck acting as the positive reinforcement. Manual for design and detailing of reinforced concrete to the. Design of reinforced concrete structures ii twoway slabs. The service live load is 116 psf and 4000 psi concrete is specified for use with steel of yield stress equal to 60,000 psi. Design of slab for flexure 067 m unit width of slab. The beam has to carry a distributed permanent action of 10 knm excluding beam selfweight and variable action of. There are five design procedures with examples developed by mr. For pavement thickness greater than 400 mm, specialised software design tools should be used to determine the optimum pavement thickness. Slabs may span in one direction or in two directions and they may be supported on monolithic concrete beams, steel beams, walls or directly by the structures columns.
The sectional design model is appropriate for the design of a typical bridge girder, slab, or other regionof components where the assumptions of traditional beam theory are valid. Equivalent frame method twoway slab twoway slab twoway slab example design a simply supported one way reinforced concrete floor slab has a span of 3m. Reinforced concrete buildings series design booklet rcb2. Seismic design of reinforced concrete and masonry buildings. The first reinforced concrete design manual formerly titled aci design handbook was developed in accordance with the design provisions of 1963 aci 318 building code by aci committee 340, design. It may be supported by reinforced concrete beams, by masonry or reinforced concrete walls, by structural steel members, directly by columns, or continuously by the ground. Reinforced concrete design to eurocode 2 pdf download.
Concrete design software pca structurepoint reinforced. Reinforced concrete design beam structure reinforced. Structural design of a reinforced concrete residential. In this example, the latter option will be used to achieve better understanding for the design of twoway joist slab often called twoway ribbed slab or waffle slab. The reinforced concrete design handbook now provides dozens of design examples of various reinforced concrete members, such as one and twoway slabs, beams, columns, walls, diaphragms, footings, and retaining walls. For simplicity, only stripbystrip design is document in the proceeding. Reinforced concrete design 1 design of slab examples and. Slabs shall be designed as simple or continuous spans under uniform loads section 5. Eurocode 2 worked examples the concrete initiative. The retaining wall is fixed to the reinforced concrete slab foundation with a shear key for sliding resistance. Therefore, the mix is what varies, rather than the type of cement. Special considerations are required for problem soil such as. Twoway joist concrete slab floor waffle slab system. The slab has to carry a distributed permanent action of 1.
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