Design of reinforced concrete structures ii twoway slabs. It is highly suggested to watch all the videos under the video series 6. Modification of slab design standards for effects of skew. Reinforcement for slabs on ground concrete construction. Chapter 3 design of rectangular beams and oneway slabs. The paper presents results of research on reinforcedconcrete flat slabs and basic aspects of their construction technology. Structural concrete structures reinforced concrete construction. Reinforcing is added to control shrinkage cracking and maximize the distance between designed joints. The slab panels were modelled for the finite element analysis using equalsize quadrilateral elements of 0. Reinforced concrete sk 33 section through slab showing stress due to moment. 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. 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.
Introduction to concrete slab design reinforced concrete. Reinforced concrete design centers for disease control. Reinforced concrete design 1 design of slab examples and. The structural design of a concrete floor slab on grade is primarily controlled by the stresses caused by moving live loads and in some cases the. Manual for design and detailing of reinforced concrete to. Design of slab examples and tutorials by sharifah maszura syed mohsin example 1. Design of reinforced concrete structures ii twoway slabs 1 1. The design procedures described in this article meet aashto lrfd specifications aashtolrfd. Design of fibre reinforced concrete beams and slabs. Find the following parameters for design moments in step 2 per unit width step 4 note. In practice of civil construction precast, precast and castinsitu, and total castinsitu slabs apply. A concrete slab is a common structural element of modern buildings, consisting of a flat. This article discusses the similarities and differences between traditional frame methods and finite element methods for the design of floor slab systems. Longitudinal steel should be detailed in a 2bar alternating pattern, with one of the bars continuous through the slab.
Reinforced concrete slabs are used in floors, roofs and walls of buildings and as the decks of bridges. Each of the eight chapters of the book tackles a specific area of concern in structural concrete. Design of slab for flexure 067 m unit width of slab. Structural modeling and analysis of concrete floor slabs. Zollinger program manager, rigid pavements texas transportation institute and shiraz d.
The result is a lightly reinforced slab designed to offset the effects of temperature and shrinkage of the concrete. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems. 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. Design examples 82 this chapter illustrates the seismic design of precast concrete members using the nehrp recommended provisions referred to herein as the provisions for buildings in several different seismic design categories.
With some limitations, reinforcement for slabs can be sized using the subgrade drag theory in order to increase the spacing of control or construction joints. Mineral products association mpa is the trade association for aggregates, asphalt, cement, concrete, dimension stone, lime, mortar and silica sand industries. In most cases, the slab thickness is designed as an unreinforced concrete section. Example on design of slab bridge design data and specifications superstructure consists of 10m slab, 36m box girder and 10m tgirder all simply supported. Besides being a medic, he loves blogging, and he always strives hard to share the highquality content with others. 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. 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. When a concrete slab is constructed monolithically with the supporting concrete beams, a portion of the slab.
Its limitation lies in the practical range of span lengths and. Due to simplicity of design and construction, the concrete slab structure is relatively economical. Both slab on grade and structural slabs can be created using this formwork. Best practices of concrete pavement transition design and construction by youn su jung graduate assistant research texas transportation institute dan g. This course design of reinforced concrete slab gives you detailed understanding, explanations and procedures for the design of rc slabs. Floor slab design floors are designed as slabs on grade. Manual for design and detailing of reinforced concrete to the september 20 code of practice for structural use of concrete 20 2. The slab thickness depends on the type of loads on the floor slab. In the previous course, you have been introduced to the philosophy of reinforced concrete design. The unified facilities criteria ufc system is prescribed by milstd 3007 and provides planning, design, construction. Introduction concrete slabs on grade are a very common type of concrete construction. Download design of reinforced concrete textbook by civilenggforall in pdf format useful for the students preparing for gate, ies, semester exams. Reinforced concrete wall design basics mike oshea, p. Information on other aspects, su ch as materials, construction methods, placement of concrete, and finishing techniques, is.
Pdf optimum design of reinforced concrete waffle slabs. This chapter provides supplementary information specifically regarding the general properties of concrete and reinforcing steel and the design of reinforced concrete. Plain concrete slabongrade design pt999 structural op 26 oct 04. Ufc 332006a concrete floor slabs on grade subjected. Slabs on ground typically are designed as unreinforced sections. The text first deals with the serviceability and safety, and then proceeds to the properties of materials and mix.
Best practices of concrete pavement transition design and. Chapter 3 design of rectangular beams and oneway slabs 12 h a 12 strip in a simply supported one way sl ab h. The minimum spacing of reinforcing bars should preferably be 6 in. There is a nominal strength that is reduced by a factor which must exceed the factored design stress. Concrete slab design procedure7 design of continuous slab basics of reinforced concrete slab design slabs are generally designed on the assumption that they consists of.
Guide to the design and construction of reinforced. Floor slabs can range from a simple residential basement slab to a heavyduty industrial floor. The floor system of a structure can take many forms such as in situ solid slabs, ribbed slabs or precast units. Reinforced concrete slab design and detailing guide is456. Structural concrete discusses the design and analysis of reinforced and prestressed concrete structural components and structures. This paper deals with the problem of optimum design of reinforced concrete twoway ribbed waffle slabs using genetic algorithms. 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. How to design reinforced concrete flat slabs using finite. The construction and design of concrete slabs on grade. The situations in which the reinforced concrete slabs require the intervention for repairs or strengthening are the following 1. Powered by a sophisticated fem solver increasing capacity and substantially speeding up solution for large and complex models, spmats v8. Only the design of slab bridge will be used for illustration. This guide concentrates on the structural design of the floor system and the designer should consult other manuals for advice on how to specify the concrete mix. Tayabji regional manager ctl group report 053201 project 05320.
Reinforced concrete design 1 design of slab examples. In normal slab and beam or framed construction, torsional rigidity of rc beams may be ignored in the analysis and the torsional stiffness may be given a very small value in the computer analysis. Following are the rcc slab design and detailing guidelines. Slabonground design should result in sufficient strength to support without distressing the loads applied to the finished surface.
Design of reinforced concrete 10th edition pdf free. This session is not intended to teach concrete design, but more of an awareness of why things are the way they are american concrete institute building code requirements for. A corrugated slab is designed when the concrete is poured into a corrugated. For enough reinforcing to accomplish enhanced aggregate interlock, the american concrete institute aci committee 360, design of slabs on ground noted that designs using 0. The construction and design of concrete slabs on grade d.
Make sure you know reinforced concrete theory and how to design reinforced concrete beams before taking this course about the course. Guide to the design and construction of reinforced concrete flat slabs contents membersof the projectsteeringgroup list of tables vii iv list of figures v 1. The lrfd bridge design specifications section 5 specifies the design requirements for concrete in all structural elements. Reinforced concrete slabs, at least those designed to span in one direction, are no different conceptually from any other beams, with the following three caveats. The floor system of a structure can take many forms such as in situ solid slab, ribbed slab or precast units. So i have them now, both aci design of slabs on grade and pca. Reinforced concrete slab an overview sciencedirect topics. Simply supported one way slab a rectangular reinforced concrete slab is simplysupported on two masonry walls 250 mm thick and 3. Bending will take place in the two directions in a dishlike form. Asce, secb course content slab on grades construction. Our aim is to enable all those involved in the design, use and performance of concrete and masonry to realise the potential of these materials.
The main objective of this project is to analyze and design a multistory building 3ddimensional reinforce concrete frame, the design of reinforced concrete slabs, beams, columns, footings and. I am designing a slab on grade for a lifting mechanism to support buses 4 to 6 separate lifting units are used to lift up each bus previous thread on this subject suggested i get the codes for slab design. The slab has to carry a distributed permanent action of 1. Design of reinforced concrete 10th edition pdf free download. Because the concrete slab on ground is assumed to be continually supported, an adequate soilsupport system is critical to the slabs performance. When working with reinforced concrete and when designing reinforced concrete structures, the american concrete institute aci building code requirements for reinforced concrete, latest edition, is widely used. Over the past several years there has been a concerted effort to coordinate the requirements in. Design is defined as the decisionmaking process of planning, sizing, detailing, and developing specifications preceding construction of slabsonground.