Comparison of one way and two way slab behavior economic choices one way slab on beams suitable span 3 to 6m with ll 35knm2. The thickness of slab is first estimated, based on minimum thickness from table 7. A reinforced concrete slab is a broad, flat plate, usually horizontal, with top and bottom surfaces parallel or nearly so. Load transfer in a one way slab, b two way slab nilson fig. Integrated ifb beams with undertied hollow sections to create a span of 12,5 m, which is 30% larger than is possible with integrated beams. A reinforced concrete slab is built integrally with its supports and consists of two equal spans, each with a clear span of 15 ft. Analysis and design of 1m slab strip is then performed in the main direction and the design results are.
This project manager job description sample pef is optimized for online job boards. A six storey building for a commercial complex has plan dimensions as shown in figure 1. Then click on the link to know more about this document and view some samples you can use freely now. When zd is determined, the prestressing force required to balance an. Shear due to loads always must be less than the shear strength of concrete. Budget proposals can be created and used whenever there is a need to request for a budget for a certain cause or project. Memberlocation all beams beam sag beam hog ebeam sag ebeam hog. Punching shear reinforcement on slab 39 one way joist 41 two way slab analyzed by the direct design method 47 development length of bars in tension 50 group of headed studs in tension near an edge 52 shear strength of slab at column support 54 simple span deep beam by strutandtie model 56 continuous deep beam by strutandtie model 60. Member design rc one way spanning slab 030915 member design reinforced concrete one way spanning slab bs8110 v2015. If the slab rests freely on its supports, the span length may be taken equal to the clear span plus the depth of the slab but need. One way slab and two way slab design procedure example. Analysis and design of two way slabs page 1 chapter 3.
The institution of structural engineers the institution of civil engineers march 2000 manual for the design of reinforced concrete building structures to ec2. A slab strip of unit width is analysed using simple beam theory. Ce 433, summer 20 slab design example 1 5 design a one. Since this is the input for the the exterior portion of the slab use exterior slab for the name. Deep ribs, the concrete and steel quantities are relative low expensive formwork expected. A pdf, or portable document format, is a type of document format that doesnt depend on the operating system used to create it. Design of one way slabs the structural action of a one way slab may be visualized in terms of the deformed shape of the loaded surface. Oneway and twoway slabs oneway slabs transfer the imposed. Minimum thickness for beams ribs and one way slabs. Its customizable with project management responsibilities and duties. A reinforced concrete slab is built integrally with its supports and consists of equal span of 15 ft. Introduction in reinforced concrete construction, slabs are used to provide flat, useful surfaces. Types of one way slab one way slab may be solid hollow ribbed 6. Member design rc one way spanning slab made by date chd.
The aci 31819 primer is a quick and handy cheat sheet for the design professional, highlighting code provisions relevant to the implementation of wwr in structural design. Civl311 civl911 2018 week 6 design of one way slab student 1. Sometimes you may need to be able to count the words of a pdf document. 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. Once design compressive strength of concrete and yield stress of reinforcement are specified, the next steps are followed. The welded wire reinforcement design and detailing guide the guide provides contractors and designers a comprehensive benchmark for the incorporation of wwr into contract documents used on site. Oct 27, 2016 slab is an important structural element generally constructed horizontally to provide flat surfaces such as roof, ceiling, floor, etc. Civl311 civl911 2018 week 6 design of one way slab student. Design a simply supported one way slab over a clear span of 3. Design calculation design of one way slab slab s1 span of one way slab l 2 m section provided.
Here are the steps for the design procedure for one way slab in steps. Reinforcement detailing of a slab is done based on its support conditions. Pdfs are extremely useful files but, sometimes, the need arises to edit or deliver the content in them in a microsoft word file format. Reinforcement detailing of rcc slabs concrete slab. The slab has to carry a distributed permanent action of 1. Minimum thickness of one way ribbed slabs summary of one way ribbed slab design procedure. One way slab design procedure with example design of one. Simple span reinforced concrete slab bridge rating example. 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. Figure 1 shows a rectangular slab, simply supported along its two opposite long edges and free of any support along the two opposite short edges.
Remote work, technology, and engagement are hot topics in the new world of work. Practically any document can be converted to portable document format pdf using the adobe acrobat software. How to convert scanned documents to pdf it still works. The two classifications are oneway slab and two way slab. Pdf design calculation design of one way slab slab s1 span.
Analysis and design of slabs slabs having supports on less than four sides can be designed as one way. In this video deisgn of two way slabs has been covered using is 456. Design moments and shears in one way slabs can be found either by elastic analysis or through the use of the same coefficients as used for beams aci 8. Reinforcement system of simple supported and continuous one way slabs, the distribution steel 7. Design example of one way slab with detailing scribd. Receiving a subpoena that urges you to provide a statement for a deposition regarding a c. Design of oneway reinforced concrete slabs class notes and example notes on designing one way slabs aci 318 ch. A specific budget is allotted to every department within a company or organization and the estimated budget costs is r. Time saving design aids two way slabs page 6 of 14 the pca computer program pcaslab can be used to expedite the design of different slab systems.
In two way slab main reinforcement is provided along both. In addition to general ultimate and serviceability limit state design issues, practical design considerations such as the formation of holes in the slab, support details, fire protection, and attachments to the slab are discussed. Assume partitions cannot be damaged by deflections. 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. Two way concretefloor slab withbeams design detailing. M before discussion of this method, we have to study some concepts. Slab is checked for deflection shear and development length. One way slab is designed as singly reinforced rectangular section. Check the adequacy of slab thickness for beam action one way shear aci 31814 22. In one way slab main reinforcement is parallel to shorter direction and the reinforcement parallel to longer direction is called distribution steel. Whether applying for a job, proposing a project, or procuring heavy equipment, construction application documents are your goto papers to work with. The analysis and design of one way slab, one way joist, interior beam, and exterior beam are shown in this example. We have provided you with this example in pdf format for your ease. Design of slab examples and tutorials by sharifah maszura syed mohsin example 1.
Design the slab, following the provisions of the ack code. It explains by example why a the structural engineerofrecord eor needs no proprietarylike knowledge in order to implement wwr into their contract drawings, and b the protocolinuse for. Free photography contract template samples pdf word eforms free fillable forms. Design example of one way slab with detailing pdftxt. Step 2 design forces draw panel of slab and indicate maximum design moments, shears and in. The slab is 150 mm thick, the beams are 400 mm wide and 600 mm deep and the joists are 300 mm wide and 500 mm deep. Oneway and twoway slabs university of asia pacific. Structural design for residential construction presentation 4. The building is located in seismic zone iii on a site with medium soil. For those who do not know what are the des ign requirements of a slab. Files often need to be compressed for easy distribution and sharing. The program covers wide range of two way slab systems and can be used for more complex slab layouts. Design example of one way slab with detailing free download as pdf file. Ce 433, fall 2006 slab design example 1 6 design a one way slab for an exterior bay of a multistory office building using the information specified below.
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. For uniformly distributed loads of w per square foot of the slab, each strip acts approximately like a simple beam uniformly loaded by its share of w. One way slabs a one way solid slab with beams and girders for each panel the aspect ratio is greater or equal to two. Slab may be supported on walls or beams or columns. Pdf twowayconcretefloorslabwithbeamsdesigndetailing.
Pdf documents may need to be resized for a variety of reasons. Quick reference for welded deformed wire reinforcement. Design the slab following the provisions of the aci code. The cost of hiring a photographer varies greatly depe. The size and page scaling of pdf files can be reduced with a variety of free software tools that are availab. The critical section for one way shear is located at a distance d, from the face of support see figure 3. One way slab can be defined as the type of slab in which the ratio of the longer span to. Slab supported on two sides and bending takes place predominantly in one direction only is called one way slab. If slab is supported on all four sides and r shorter side longer side one way slab. Reinforced concrete design 1 design of slab examples and. Please read the lauses mentioned in the video while solving the problem. Cs1 check if one way or two way slab 1 slab is one way since it is catilever slab minimum slab thickness min t 69. One way slabs are such slabs in which the loads are shared only by the shorter direction of the slab.
Also, if the slab is supported on all four edges and the ratio of longer spanl y to shorter span lx i. The output of the program for the slab in the example is shown in the following pages. Slabs may be supported by rcc beams, columns, steel beams, etc. Feb 04, 2018 perpendicular to two supporting edges. In any span, the max cable sag, zd depends on the concrete cover requirements and the tendon dimensions.
Wind loads above, figure 1609, basic wind speed 3second gust, 33 feet above ground, exposure c ibc 2003 zone v 30 mph 1 2 3 70 80 90 western mass. Here ratio of longer span of slab to the shorter span of slab is greater than 2. Plan view of floor system assume partitions will not be damaged by deflections. The slab is part of an office building and the slab is supporting masonry wallspartitions that are sensitive to excessive deflections. Member design reinforced concrete one way spanning slab. Reinforced concrete design 1 design of slab examples. One way slab being supported on two opposite sides only leads to the structural action in single direction. Slab is a common term used to describe the structural elements such as floors and roofs where the thickness of the element is very small compared to the length and. The hand solution is used for a detailed comparison with the analysis and design results of the engineering software program spbeam. Basically, the depth of a slab is very small compared to its depth. Use i wsd, ii usd to design the two way slab shown below, carrying floor finish 30 psf, random wall 50 psf and live load 60 psf given. Design of one way slabs as per is 456 worked step by. Job title xx multispan slab singlespan beam floor plate beam span 6.
Aci provisions on pt slab design minimum average precompression 0. The 2012 edition of the reinforced concrete design manual sp1711 was developed in accordance with the design provisions of aci 31811, and is consistent with the format of sp1709. Difference between one way slab and two way slab daily civil. One way slabs normally design as a beam with cables running in the direction of the span at uniform centres. The slabs having ratio of longer length to its shorter length l y l x greater than 2 is called one way slab otherwise as two way slab. Once design compressive strength of concrete and yield stress of reinforcement are specified, the next steps are. You can create a pdf from scratch a blank page, import an existing document, such as a webpage, word document or other type of f. Now let us have a numerical on it to get a full concept on the procedure to design of one way slab. One way slab one way slabs are those slabs with an aspect ratio in plan of 2. Design procedure steps for one way slab slab design steps. Quick guide to design of one way slab with is code 456. Pdfs are very useful on their own, but sometimes its desirable to convert them into another type of document file.
Select representative 1 m wide design stripstrips to span in the short direction, as. Steps for the analysis and design of oneway solid slab 1m slab strip 1 thickness. Project manager job description sample pdf free and ready workable. Simply supported beam subjected to concentrated midspan force p. Design of reinforced concrete structures ii twoway slabs. This document was uploaded by user and they confirmed that they have the permission to share it. Slab supported directly by columns are called flat slab. One way spanning slabs should be treated as beams of unit width and chapter 2 should be followed except for minimum shear reinforcement. A photography contract is a written agreement that describes the services to be performed by a photographer hired by an individual or business. Twoway joist concrete slab floor waffle slab system. Define the term slab, one way slab, two way slab, shrinkage and temperature reinforcement, main reinforcement. In case of slabs thin members, no need of even minimum shear reinforcement.
Conceptual design and design examples for multistorey. The service live load is 100 psf, and 4000 psi concrete is specified for use with steel with a yield stress equal to 60,000 psi. Simply supported one way slab a rectangular reinforced concrete slab is simplysupported on two masonry walls 250 mm thick and 3. Q design a floor slab for an interior room, with clear dimensions of 3. Simple to construct and simple arrangement of reinforcement. Paper to make templates cutting knife white firing clay porcelain is best if making a colour panel for lustre, but make the panel from the. A slab is structural element whose thickness is small compared to its own length and width. Manual for the design of reinforced concrete building. How to get the word count for a pdf document techwalla. The following example illustrates the example building. Deep ribs, the concrete and steel quantities are relative low.
Despite the modern era of mobile phones, internet access, and social media galore, recruit. Analysis and design of slabs one way civil engineers pk. Can be used for larger spans with relatively higher cost and higher deflections one way joist system suitable span 6 to 9m with ll 46knm2. The design of composite slabs and beams is discussed in detail in relation to the eurocodes and bs 5950.
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