Design of beams and slab as per is 456 pdf

The continuous beam along grid 3 is selected to demonstrate the analysis and design of continuous t beams structural analysis, flexural design, shear design, deflection checks and the results of hand calculations are then compared with numerical analysis results obtained from the spbeam engineering software program. Limit state of collapse and limit state of serviceability. Reinforced concrete continuous beam analysis and design. Oneway and twoway slabs oneway slabs transfer the imposed. Reinforced concrete design rcc design as per is456. Reinforced concrete design rcc design as per is 456 using staad. Design of reinforced concrete structures ii twoway slabs. Module 3 design of reinforced concrete deep beams introduction minimum thickness steps of designing deep beams design by is 456 detailing of deep beams. Slabs may be supported on monolithic concrete beam, steel beams, walls or directly over the columns. Floors structural floor systems made of reinforced cement concrete are required to efficiently. Sep 05, 2011 stepbystep design procedure for nibs vertical wall reinforcemen t nib from wall determine cover to reinforcement nib from beam sk 56 typical arrangement of nibs. Reinforced concrete design indian code is 456 strength.

Reinforcement detailing in beams beam carries transverse external loads that cause bending moment, shear forces and in some cases torsion concrete is strong in compression and very weak in tension. Feb 10, 2014 assume the thickness of slab take 4 cm per metre run of the span. For 1m slab width, moment, shear force, oneway continuous slab for continuous slab, moment and shear force can be obtained from table 3. Beam design of an rc frame building in seismic zone ii 15 3. Feb 14, 2017 design tables 2 way slabs as per is 456 with deflection check 1. The design of concrete beam includes the estimation of cross section dimension and reinforcement area to resist applied loads. Design the building for seismic loads as per is 1893. Exterior column design of an rc frame building in seismic zone v 33 5. Please read the lauses mentioned in the video while solving the problem.

Flat slab analysis, design and detailing pdf civil engineering. Determine ultimate loads on nib follow load combination rules of section 2. Two way rcc slab designing excel sheet civil engineering. Oneway and twoway slabs oneway slabs transfer the imposed loads in one direction only.

Even while designing they are considered as oneslabs with cantilever fixed or continuous at supports. Jul 14, 2018 learn the detailed procedure of design of staircase according to indian standard code 456. Check for minimum and maximum reinforcement criteria is considered for flexure as per the code. The solved example is calculated with detailed calculation of reinforcement with. Oneway simply supported slab analysis and design of the slab similar to design of simply supported beam as indicate in the previous chapter. In order to achieve this the bending moment due to maximum dead and live load will have to be supported by pt strands alone. Design of rcc rectangular beams as per is 456 2000. Reinforced concrete slab design guidelines a effective span of slab. A civil engineer must know all the aspects regarding the flat floor system. Reinforced concrete design indian code is 456 free download as powerpoint presentation. Design of beam for 24 feet by 12 feet span duration. The designing is mainly based on reference of is code 456. Nominal shear stress is calculated first at the critical section which should be less than the maximum shear stress given in table 20 of is 456. The effective span shall be as per simply supported case, the 1 which i.

Design and detailing of rc deep beams as per is 456 2000 1. Dec 14, 2017 design of one way slab is covered in this video. What is the maximum and minimum range of a steel bar for a. Design concepts, design of beams part a short answer questions 1 what are the three methods of design of reinforced concrete structural elements. Find the effective span which is lesser of i distance between centres of bearings, and ii clear span and effective depth. Design tables 2 way slabs as per is 456 with deflection check. They may be supported on two opposite sides only fig. Reinforcement detailing in beams according to is 4562000. 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. Reinforced concrete, 2014, 9th edition, aci 31811 code edition, by jack c.

Then design shear strength of concrete is taken from table 19 of is 456. Minimum thickness of concrete slab, beam, column, foundation minimum thickness of concrete slab, beam, column, foundation and other structural members is selected to meet the design requirements as per standard codes. Assuming suitable bearings not less than 10cm, find the span of the slab between the centers of bearings. In this video the basic theory of one way continuous slab as per is. We can take the effective span and we shall get it in clause 22. If the problem is statically determinate, the equilibrium equations would. Design of two way slabs is 456 limit state method youtube. Check for deflection is as per the provsions in cl. Assume the thickness of slab take 4 cm per metre run of the span. Uniti design concepts, design of beams part a short. Design of cantilever slab spreadsheet engineering books. The building is located in seismic zone iii on a site with medium soil. Design of rcc rectangular slabs as per is 456 2000 the design of two way rectangular slabs supported on all four sides without provision for torsion at corners is carried out as per table 27, indian standard is 456 app. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems.

Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. Recommendations for design of beamcolumn connections in monolithic. Interactive rcc column design using analysis results from staad asper is 456. Design of concrete structures 14th edition, 2009, by arthur h. Two way rcc slab designing tool in microsoft excel developed by shankar tayal a 3rd year student of school of infrastructure, indian institute of technology, bhubaneswar this is a part of his project economic design of two way rcc slabs under prof s.

While doing calculations, we assume the self weight of columns is between 10 to 15 kn per floor. Determine the maximum bending moment for a one meter wide strip of the slab. Bending will take place in the two directions in a dishlike form. In normal slab and beam or framed construction, torsional rigidity of rc. Jul 09, 20 design of rcc rectangular beams as per is 456 2000 the design of reinforcement for limit state of collapse in flexure and shear for rectangular beam section is carried out as per is 456. Design of rectangular reinforced concrete beam procedure. All resources used for compiling the contents are gratefully acknowledged. Chapter 2 structural design of rcc building components. Reinforced concrete slab design and detailing guidelines for depth of slab, loads on slab, reinforcement guide for oneway and twoway slabs as per is. Dhang department of civil engineering indian institute of technology kharagpur lecture 14 design of slabs today, we shall start design of slabs. Rcc column design calculate in excel sheet civiconcepts. They are projections from wall face of lintel beams or floor slabs.

Find the effective span which is lesser of i distance between centres of bearings. And this is your lecture number 14, design of slabs part 1. Twoway slab design panel select boundary condition of slab for upliftment of corners. Design and detailing of rc deep beams as per is 4562000. A six storey building for a commercial complex has plan dimensions as shown in figure 1. Design example of a six storey building iit kanpur. Powered by the equivalent frame method of analysis and design per latest american aci 31814 and canadian csa a23. Design of rcc beam as per is4562000 using excel sheet. Interactive rcc column design using is 456 using analysis result from staad, without referring sp16 charts. Twoway concrete floor slab with beams design and detailing design the slab system shown in figure 1 for an intermediate floor where the story height 12 ft, column crosssectional dimensions 18 in. Reinforced concrete slab design and detailing guide is456. Concrete slab behave primarily as flexural members and the design is similar to that of beams. Calculation of approximate depth from deflection criteria cl 23. Plain and reinforced concrete code of practice ced 2.

Design of one way and two way slabs, design of staircases. Following are the rcc slab design and detailing guidelines. Is 43 is 456 bs 8110 it will be responsibility of contractor to do a predominantly prestressed slab beam construction. Find depth of slab using deflection control criteria. These materials are originally located at different websites. So, we have a few more lecturers, so today we shall start part 1. Explanatory examples for ductile detailing of rc buildings. Application of limit state method to rectangular beams for flexure, shear, bond and torsion. Each code has specified the fixed coefficients for lateral and transverse distribution of moments as per direct design method and equivalent frame method. Here the ratio of longer span of slab to the shorter span of slab is less or equals to 2.

Sep 02, 2011 design of reinforced concrete beams 2. Besides knowledge of structural engineering it requires knowledge of practical aspects, such as relevant codes and bye laws backed up by ample experience, intuition and judgment. Deshuttering time as per is4562000 is allinterview. Deshuttering time as per is 456 2000 is 456 2000,clause11. Flat slab system is an important division of concrete floor system. Design tables 2 way slabs as per is 456 with deflection check 1,093 views.

Feasibility of structural design of members has been ensured under the provision of is. A civil engineer should study these lectures and materials for structural engineering acumen. Even while designing they are considered as one slabs with cantilever fixed or continuous at supports. Design of reinforced concrete structures ii twoway slabs 1 1. Besides knowledge of structural engineering it requires knowledge of practical aspects, such as relevant codes and bye laws backed up.

One way slab being supported on two opposite sides only leads to the structural action in single direction. Flat slab analysis and design pdf flat slab design pdf 1. Characteristic strength are based on the strength at 28 days. Find the dead load and the live load per square meter of the slab. Firstly, begin the design by selecting depth and width of the beam then compute reinforcement area.

Sep 16, 2015 this spread sheets is useful for design of cantilever slab as per is 456. Design and detailing of rc deep beams as per is 456 2000 vvietcivil. Simply supported slab upliftment of corners continuous slab no upliftment. Based on the boundary condition, you can determine the axial thrust and the bending moment. The trial depth is selected based on spandepth ratio of 7, as in is. The details of the preparation of the control and retrofitted reinforced concrete beamcolumn joint specimens are also given in this chapter. What are the minimum and maximum percentages of steel for. Calculate aspect ratio aspect ratio 2 longer spanshorter span 2. The transverse loads cause internal shear forces and bending moments in the beams as shown in figure 1 below. Steel reinforcement counter act tensile stresses in reinforced concrete beams. Structural design structural design is an art and science of creation, with economy and elegance, a safe, servicable and durable structure. The software autocad is used for drawings planning and for drawing reinforcement details of slabs, columns, beams, footings, etc.

Twoway concrete slab with beams spanning between supports. Two way slabs are such slabs in which the loads are shared by both the shorter and longer direction of the slab. Pdf in a developing country like india the benefits of posttensioning system are yet to be recognized. Oneway and twoway slabs university of asia pacific. Apr 14, 2016 design and detailing of rc deep beams as per is 4562000 1.

Type of formwork minimum period a vertical formwork to columns, walls, beam 1624 h b soffitformwork to slabs props to berefixed immediately afterremoval of formwork 3 days. Beam design of an rc frame building in seismic zone v 4 2. Interior column design of an rc frame building in seismic zone v 24 4. Design of one way slabs as per is 456 worked step by. Learn the detailed procedure of design of staircase according to indian standard code 456. What are the is specifications for design of shear in rcc. We adopt the same method of calculations for beam also. This publication on the design and detailing of reinforced concrete structures is as per the indian code of practice for the design of concrete structures, which is highly recommended to practicing structural design. Design of one way slabs as per is 456 worked step by step.

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. Two span continuous deep beam with two point loading 2. In this video deisgn of two way slabs has been covered using is 456. Step 1 step 2 determine cover required to reinforcement as per tables 11. Sloping slabs under gravity load would be subjected to bending and axial thrust.