Flat slab types of flat slab design and its advantages. A civil engineer must know all the aspects regarding the flat floor system. Analysis and design of flat slab with and without shear. These materials are originally located at different websites. Flat slab is defined as one sided or twosided support system with sheer load of the slab being concentrated on the supporting columns and a square slab called drop panels. Flatslab construction has been widely used in construction today because of many advantages that it offers. Oneway and twoway slabs oneway slabs transfer the imposed loads in one direction only. Design of slab examples and tutorials by sharifah maszura syed mohsin example 1. Calculation of approximate depth from deflection criteria cl 23. So, we have a few more lecturers, so today we shall start part 1. Oneway and twoway slabs university of asia pacific. Flat slab sized for punching shear and deflection additional reinforcement added to span steel to reduce deflections typically 25% extra on a 7. This pdf file contains a chapter of 23 pages with various aspects of flat slabs including four example of flat slab design.
This spread sheets is useful for design of cantilever slab as per is 456. Reinforced concrete design 1 design of slab examples. 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. Ppt design and comparison of flat slab using is 456 2000 free download as powerpoint presentation. Design procedure of twoway slabs using aci moment coefficients. A civil engineer should have clear and concise ideas on all the features of the flat floor system. Usually balcony slabs are cantilever slab and hence a provision for wall load at free end is included so that the spread sheet is useful for practical purposes. Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. Flat plate with spandrel beams and flat slab two way beams supported slab. Page 14 example1 try5 9242008 flat slab analysis and design job. Flat slab system is a vital part of concrete floor system.
Feasibility of structural design of members has been ensured under the provision of is. 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. Beside this, due to shear problems at column heads, the thickness of flat slab is greater. Helpcontentsgraphical interface helpadvanced slab design mode elsewhere in this forum, you will find numerous discussions on designing slabs using ram concept. Design of reinforced concrete structures ii twoway slabs 1 1. The following limitations apply to the slab system. The basic philosophy in the design of flat slab is to consider only gravity forces. Plain and reinforced concrete code of practice ced 2. The slab has to carry a distributed permanent action of 1. The beams reduce the available net clear ceiling height. Download file pdf flat slab manual design bs flat slab manual design bs flat slab design example part 1 how to design a flat slab, step by step explained in this video. To study the seismic performance of flat slab buildings, designed for different codes, two sets of buildings, 5 storey and 10 storey tall, with identical plan shown in figure 2 have been considered. Slab resting on walls or sufficiently deep and rigid beams on all sides.
Section 3 general design consideration 18 bases rlr design 18. There must be at least 3 continuous spans in each direction viz column strip, middle strip, column strip the panels should be rectangular and the ratio of longer. Concept designs prepared assuming detailed design would be to bs 8110 may be continued through to detailed design using eurocode 2. Oneway simply supported slab analysis and design of the slab similar to design of simply supported beam as indicate in the previous chapter.
Twoway flat plate concrete floor system analysis and design the concrete floor slab system shown below is for an intermediate floor to be designed considering partition weight 20 psf, and unfactored live load 40 psf. The investigation shows that, the weight of flat slab. Calculate aspect ratio aspect ratio 2 longer spanshorter span 2. Design considerations for reinforced concrete flat slab floor system harshal deshpande1, radhika joshi2. Guide to the design and construction of reinforced. Reinforced flat slab design excel sheet best online. The design is carried out as per is 456 2000 and for reinforcement detailing sp 34 is used. And this is your lecture number 14, design of slabs part 1.
They may be supported on two opposite sides only fig. The study examines the performance of flat slab with shear walls in multistorey buildings. Mar 1, 2017 reinforced flat slab design excel sheet best online engineering resource. Keywords rc flat slab, direct design method ddm, equivalent. A procedure for carrying out the detailed design of flat slabs is shown in table 1 below.
For 1m slab width, moment, shear force, oneway continuous slab for continuous slab, moment and shear force can be obtained from table 3. Department of mechanics, materials and structures english. Pro model is exported to ram concept and the design of that slab is done by ram concept. This is your beam column, so this is your, we can design it as i said flat slab. Dhang department of civil engineering indian institute of technology kharagpur lecture 14 design of slabs today, we shall start design of slabs.
Flat slab analysis, design and detailing pdf civil engineering. A flat slab is a reinforced concrete slab supported directly by concrete columns without the use of beams. Pdf flat slabs are highly versatile elements widely used in construction. In this video deisgn of two way slabs has been covered using is 456. 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. Flat slab system is an important division of concrete floor system. Flat slab seminar report, ppt, pdf for civil engineering. Flat slab analysis, design and detailing pdf civil. Flat slab common practice of design and construction is to support the slabs by beams and support the beams by columns. The waffle slab has been considered as monolithically connected to band beams. Following are the rcc slab design and detailing guidelines. This assumes that the slab thickness has previously been determined during conceptual design. Flat slab types of flat slab design and its advantages flat slab is a reinforced concrete slab supported directly by concrete columns without the use of beams. What should be the design procedure for designing a flat.
Plzsubscribe this video deals with the basic of flat slab and the clauses of is 456 2000. Design considerations for reinforced concrete flat slab. Analysis and design of slabs two way civil engineers pk. Also explore the seminar topics paper on flat slab with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year 2015 2016. Must watch basics of flat slab for better understanding from the link. Reinforced concrete slab design and detailing guide is456. Twoway slabs have two way bending unlike oneway slab.
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