This example problem of a concrete slab formwork design using an excel spreadsheet is very handy for all construction professionals out there. In this video deisgn of two way slabs has been covered using is 456. The recommendations derived from these and other studies vary from extremely light to extremely heavy. Reinforced concrete sk 33 section through slab showing stress due to moment. 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. Designing of slabs depends upon whether it is a oneway or a two way slab, the end conditions and the loading. Based on our analysis that considered the distribution of strain due to girder end rotation, it was found that all translation will occur at the bearings. Roof deck limit states and design example floor deck limit states and current design methodology composite deck design examples shortcuts for multiple loads form deck and steel fibers. The example presented here is for twoway posttensioned design. Reinforced concrete design 1 design of slab examples and. Only the design of slab bridge will be used for illustration. Design of slab examples and tutorials by sharifah maszura syed mohsin example 2. According to the way loads are transferred to supporting beams and columns, slabs are classified into two types.
Structural steel composite slab 1 of 7 rev design project. A2slab thickness design by wri method a3design examples using coe charts a4slab design using posttensioning a5shrinkagecompensatingconcreteexamples chapter lintroduction l. Introduction concrete slabs on grade are a very common type of concrete construction. Download free demo updated august 8, 2019 soilstructure slab on grade software simplifies the calculation of a. In the current design, since the point pressure is within the allowable value. Using aashto lrfd bridge design specifications 4th ed. 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. To make the slab design independent of the type of rail, we will place the wheel load 1 from the nominal face of the rail 1ft from the edge of the slab. The slab is supported on beams of size 225 x 500 mm spaced at 4. Oneway and twoway slabs oneway slabs transfer the imposed loads in one direction only. Design manual to bs8110 outline of the bs8110 design process outline of the bs8110 design process calculate vc concrete shear capacity without reinforcement the design process for the now withdrawn bs8110 design standard works slightly differently to that used in. Floor slabs can range from a simple residential basement slab to a heavyduty industrial floor.
Design of steel deck for concentrated and nonuniform loading. Oneway simply supported slab analysis and design of the slab similar to design of simply supported beam as indicate in the previous chapter. Assume partitions cannot be damaged by deflections. Moment division example 6000 6000 6000 6000 6000 5000 layout of building 7000. As with any new design code, it is important to have an understanding of the principles and background, as well as design aids to assist in the design process. Lrfd castinplace cip slab span design example county. First designs to follow the brab report required foun. Master of science and hereby certify that, in their opinion, it is worthy of acceptance. It was actually the widespread use of the posttensioned slabonground which induced this interest in design procedure and in many studies of reported slab failures. Dec 20, 2017 in this video deisgn of two way slabs has been covered using is 456.
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. The slab is 300 mm thick and columns are 400 mm square. Design procedure steps for one way slab slab design steps. The reinforced concrete design manual sp1711 is intended to provide guidance and assistance to professionals engaged in the design of castinplace reinforced concrete structures. Pgsuper is a computer program for the design, analysis, and load rating of. Here are the steps for the design procedure for one way slab in steps. To perform lrfr rating, select the view analysis settings button on the toolbar to open the window shown below. Use i wsd, ii usd to design the twoway slab shown below, carrying floor finish 30 psf, random wall 50 psf and live load 60 psf given. Composite slab worked example 1 made by sssr date 140500 structural steel design project calculation sheet checked by pu date 080800 check the adequacy of the continuous composite profiled deck slab with spans of 3. Examples c1 through c5 are a set of examples that illustrate the elevation of a singlestory home with a crawlspace. The two classifications are oneway slab and twoway slab. The attachment of non structural elements is the responsibility of the architect or designer, unless specifically shown otherwise.
The construction and design of concrete slabs on grade d. Design of reinforced concrete structures ii twoway slabs 1 1. Framing dead load selfweight superrimposed dead load 25 psf partitions, me, misc. Flat slab analysis, design and detailing pdf civil engineering. Pgsuper is a computer program for the design, analysis, and load rating of precast, prestressed concrete girder bridges. Equivalent tensile stress design appendix 5examples using shrinkagecompensating concrete, p. Design of one way and two way slabs, design of staircases. 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. Slabs are usually used in floor and roof construction. Oneway and twoway slabs oneway slabs transfer the imposed. Link slab design the nysdot office of structures has developed an innovative link slab design utilizing ultra high performance concrete uhpc. A reinforced concrete slab is built integrally with its supports and consists of equal span of 15 ft. 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. One way slabs are such slabs in which the loads are shared only by the shorter direction of the slab.
Bridge approach slab analysis and design incorporating elastic soil support presented by. So, you can calculate, we can assume certain depth and on the basis of that, we can go for calculation or replacement. Analysis and design of continuous slab and beam footing ubani obinna u. Design of slab examples and tutorials by sharifah maszura syed mohsin. The construction and design of concrete slabs on grade. To make the slab design independent of the type of rail, we will.
Find the following parameters for design moments in step 2 per unit width step 4 note. This appendix presents design examples of the retrofitting techniques for elevation, dry floodproofing, wet. Deck is 46 ft wide with a 15 degree skew roadway is 44 ft wide. Plan view of floor system assume partitions will not be damaged by deflections. Example on design of slab bridge design data and specifications superstructure consists of 10m slab, 36m box girder and 10m tgirder all simply supported. Before going to this topic, please read it there are two types of slab classification based on the direction of bending occurs in these slabs. Reinforced concrete design 1 design of slab examples. Continuous one way slab figure 1 shows a clear area of 12 m x 8. Equivalent frame method most commonly used method the flat slab structure is divided longitudinally and transversely into frames consisting of columns and strips of slabs with. F is the total design ultimate load on the strip of slab between adjacent columns considered 1. Design the slab following the provisions of the aci code. Tn342 design example 2way mondada 093090 adapt corporation. Direct design method ddm for slab systems with or without beams loaded only.
Please read the lauses mentioned in the video while solving the problem. The lateral loads are independently resisted by shear walls. Pdf design of flat slab worked example mohamed hussein. The first reinforced concrete design manual formerly titled aci design handbook was developed in. Powered by the equivalent frame method of analysis and design per latest american aci 31814 and canadian csa a23. The slab is for an offi ce where the specifi ed load is 1. Sep 03, 2011 reinforced concrete sk 33 section through slab showing stress due to moment. Here ratio of longer span of slab to the shorter span of slab is greater than 2. Palo verde, california structural design of mat raft foundation first draft.
Oneway and twoway slabs university of asia pacific. These design codes, considered to be the most advanced in the world, will lead to a common understanding of the design. Ce 433, summer 20 slab design example 1 5 design a one. This tutorial shows how to configure a spreadsheet with the purpose of design the spacing of joists, stringers and shores for a concrete slab form. A 2 2area 2 a c 2 2 posttensioned concrete design table 11 list of symbols used in the aci 31808 code cp area enclosed by the outside perimeter of the section, in a g gross area of concrete, in a 2 l total area of longitudinal reinforcement to resist torsion, in a o area enclosed by the shear flow path, sqin a oh area enclosed by the centerline of the outermost closed. One way slab design procedure with example design of one. Dhang, department of civil engineering, iit kharagpur. The building is located in seismic zone iii on a site with medium soil. Unless otherwise noted, all referenced table, figure, and equation numbers are from these books. They may be supported on two opposite sides only fig.
Click open template button and select the lrfr design load rating to. Reinforced concrete slab design and detailing guidelines for depth of slab. For 1m slab width, moment, shear force, oneway continuous slab for continuous slab, moment and shear force can be obtained from table 3. Bending will take place in the two directions in a dishlike fo. The service live load is 100 psf and 4000 psi concrete is specified for use with steel with a yield stress equal to 60000 psi. A 2 2area 2 a c 2 2 posttensioned concrete design table 11 list of symbols used in the aci 31808 code cp area enclosed by the outside perimeter of the section, in a g gross area of concrete, in. Design of reinforced concrete structures ii twoway slabs. Notes author staff bridgesight software sponsor bridgesight software. Design of slab for flexure 067 m unit width of slab. Equivalent tensile stress design appendix 5 examples using shrinkagecompensating concrete, p. A conventionally reinforced mat raft foundation is selected, proportioned and designed, such as to. One way slab being supported on two opposite sides only leads to the structural action in single direction.
Bending will take place in the two directions in a dishlike form. Design of two way slabs is 456 limit state method youtube. Reinforced concrete slab design and detailing guide is456. The purpose of this document is to illustrate how the pgsuper computer program performs its computations. Twoway joist concrete slab floor waffle slab system. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems. This pdf file contains a chapter of 23 pages with various aspects of flat slabs including four example of flat slab design. Flat slab analysis, design and detailing pdf civil. Hi bro, do you have design example of rectangular manhole.
Precast, prestressed girder design example pgsuper training 242020 1. The following example illustrates the design methods presented in aci 31805 and ibc 2003. Ec2 worked examples rev a 31032017 latest version page 2. Asce, secb course content slab on grades construction. Bs 8110 concrete design for slab how to pour a concrete slab concrete beam and slab bridge how to pour a 26x36 concrwte concrete slab design of two way slab example pdf flat slab design pdf design of steeltoconcrete joints design manual concrete design concrete design mix design concrete concrete beam design design of reinforced concrete. Bss090119991 abstract this design example illustrates the empirical design method for composite concrete bridge decks specified in article 9.
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