It shows construction steps and placing of reinforcement in beam and slab. Designing of slabs depends upon whether it is a oneway or a two way slab, the end conditions and the loading. Two way slab 3d view in auto cad by md aariz youtube. Design of reinforced concrete structures ii twoway slabs 1 1. Two way slab design by direct design method as per aci 31811. Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. Behavior and reinforcement of one way slab the structural frame consists of four columns, two beams and one slab. Twoway slab systems offer several possible arrangements for the tendon layout 10. Accordingly, main reinforcement is required in the two directions. Design of reinforced concrete structures ii twoway slabs. If the first slab is a two way slab, both the behavior and the reinforcement rules are proportionate.
The design is based on hong kong building code hkcop 2004 and its amendment of june 2007. A civil engineer must know all the aspects regarding the flat floor system. Generally, there are two types of slab which are one way and two way slabs. The first example is for a mildreinforced concrete slab rc, and the. Two way slab design design of two way slab rc design. Behavior of a oneway slab connected to a cantilever civil engineering software, civil. The reinforcement areas are calculated automatically from the strap finite element analysis results. In one way slab main reinforcement is parallel to shorter direction and the reinforcement parallel to longer direction is called distribution steel. The ratio lb which is less than 2 is known as two way slab. Civil engineering 3d animation of a reinforced concrete structure. Horizontal bond beam reinforcement is required to be located in the. Slab supported directly by columns are called flat slab.
The program covers wide range of twoway slab systems and can be. Beamless slabs beamless slabs are supported only on columns and are applied mostly in large industrial and public buildings. These materials are originally located at different websites. The other ways of analysis of twoway slabs are the direct design method. This construction video offers detailed information on how to design two way slab systems of reinforced concrete adhering to aci 31811. A single slab with oneway reinforcement rebars will be analyzed with rcsolver. In this post, we are going to explain how to calculate steel quantity for the slab. We assume that the verandah slab is a two way slab instead of one way slab in order to calculate mb,neg. These types of slabs are used in constructing floors of multi storeyed building. Lb2 is one way slab lb reinforcement of a one way slab connected to a cantilever are described below. Optimisation option for any given rates of concrete and steel. The safe program provides the user with two principal ways to navi gate through. The results of the parametric analysis indicate that the deflection of posttensioned two way slab is more affected by the span length than by the other variables. The following example illustrates the example building.
Unless otherwise noted, all referenced table, figure, and. Difference between one way slab and two way slab system the one way and two way slab systems are the most commonly used floor system in the reinforced concrete structure. Step 2 design forces draw panel of slab and indicate maximum design moments, shears and in plane loads, if any, per unit width of slab. Flat slab analysis, design and detailing pdf civil engineering. View 2 replies from design of structures dos online and others. Steel structure, rebar detailing, civil engineering design, circle house. This is one way slab reinforcement detail with beam. Concrete 3 design of concrete beam and slab twoway. One way slab reinforcement details online civilforum. Slab supported on two sides and bending takes place predominantly in one direction only is called one way slab. Design of a two way rcc slab structural engineering forum. Minimum area of reinforcement at bottom of slab minimum area of reinforcement at top of slab reinforcement in ydirection to resist m x about xaxis reinforcement in xdirection to resist m about yaxis. Reinforcement calculation in this post, we are going to explain how to calculate steel quantity for the slab. Concrete slabs are commonly divided into the following types.
Structural calculations for posttensioned beam and oneway. Today, i want to show you details of 1 way reinforcement slab and 2 way reinforcement slab for your easy imagination. Reinforced concrete slab and beam design software adaptrc 2017 product overview an easytouse and learn software for the design, analysis, and investigation of reinforced nonprestressed concrete beams, beam frames, slabs and floor systems a must have production tool in every structural engineering office. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations.
Buildinghow products books volume a the reinforcement. Slab design reading assignment chapter 9 of text and, chapter of aci31802. Design of reinforced concrete structures ii two way slabs. So, main reinforcement is provided in both direction for two way slabs. The main variation among the two types of slabs in one way slab load is delivered to one direction only that is the smaller one and therefore, primary reinforcement is presented parallel to the span while temperature or shrinkage reinforcement is presented perpendicular to. Two way slab reinforcement in detail civil engineering. Flat slab analysis, design and detailing pdf civil. A bentup bar called as crank bar is provided to make rcc slab safe from compressive stresses. Two way slab behaviour the behavior of a two way slab is similar to that of a one way slab the only difference being that now the slab loads will be carried in both directions. View test prep concrete 3 design of concrete beam and slab twoway slab part 22 from engineerin 101 at royal melbourne institute of technology.
Click the start animation button in the lower righthand corner of the display to. Mar 10, 2018 details language english duration 20 mins format. Design strips are used to define how reinforcement requirements are to be calculated. Reinforcement detailing of a slab is done based on its support conditions. Buildinghow products books volume a the reinforcement ii slabs twoway see more. One way spanning slabs should be treated as beams of unit width and chapter 2 should be followed except for minimum shear reinforcement. A monolithic reinforced concrete floor is to be composed of rectangular bays measuring, as shown. Now in one way slab as one side is bigger than the other side most of the load is carried by that side only so providing main reinforcement corresponding to that load carrying side will be sufficient.
The general criteria used for the design, such as details of material properties are given in a separate report entitled structural design criteria. Stiffening wall systems ways of bracing rigidity of shear walls and bracing. Two way slab systems offer several possible arrangements for the tendon layout 10. Useful information about staircase and their details engineering discoveries house. Structural calculations for posttensioned beam and oneway slab construction roya construction building division technical services unit kowloon august 16, 2009 revised. Use the equivalent frame method efm and compare the results with spslab model results. Usually, when a slab is supported by a beam the support is considered to be pinned. Reinforced concrete slab and beam design software adaptrc. If the first slab is a twoway slab, both the behavior. Design of a two way reinforced concrete slab with rcsolver software program according to eurocode 2 specifications. I am submitting it to you and i want students or professional engineers to download it and use it for their studies or. Civil engineering animation of a reinforced concrete structure. Fanella, which appeared in the october 2001 edition of structural engineer magazine.
Two way slab 3d view in auto cad by md aariz contact us to create a plan, elevation, section to create your new building. For b oth one way and two way slab with an example. How to detail reinforcements of twoway slabs quora. In two way slabs, load will be carried in both the directions. The behavior of a twoway slab is similar to that of a oneway slab the only difference being that now the slab loads will be carried in both directions. Twoway concrete slabs with openings the static system and the design of reinforcement. I am submitting it to you and i want students or professional engineers to download it and use it for their studies or projects. Figure 1 twoway slab with beams spanning between all supports. Behavior and reinforcement of oneway slab the structural frame consists of four columns, two beams and one slab. Diversion headworks type of diversion headworks components of a diversion headwork. Reinforcement details at this location are shown in the figure on the next page.
For more details watch the video with nice animation and detail drawings. Oneway reinforced concrete slab video animation 02 duration. Hello i have a solid slab about 7000 meter squared reinforced with t12 every 15cm,maximum length of bar is 12m, is there a way to make revit do the reinforcing. Eccentric footing foundation column support detail. Twoway slabs page 1 of 14 the following example illustrates the design methods presented in the article timesaving design aids for reinforced concrete, part 2. Now in one way slab as one side is bigger than the other side most of the load is carried by that side only so providing main reinforcement corresponding to. Design of reinforced concrete structures ii two way slabs 1 1. One way and two way slabs one way slabs transfer the imposed loads in one direction only. In two way slab, the ratio of longer span l to shorter span b is less than 2. Two way slabs are normally supported from four sides. Generally if one side is more than double of the other one, the slab will be one way. Apr 12, 2018 two way slab full detail explanation diagrams with site below these links are our civil videos learn field work watch and subscribe for more videos building drawings analysis in telugu.
The reinforcement rules are also similar in both directions. Details of slab reinforcement on the basis of bar bending schedule. Design of a two way rcc slab structural engineering. Two way slab design by direct design method as per aci 31811, step by step procedure and limitations of direct design method for two way slab is presented. The program calculates and details the slab reinforcement, either as an arrangement of individual bars, a pattern of prefabricated meshes, or a combination of both. Oneway and twoway slabs university of asia pacific. Safe also performs video capture of animations as avi files. The steel fixers formwork drawing of a twoway slab. The basic design procedure of a twoway slab system has five steps. Difference between one way slab and two way slab simple. Difference between one way slab and two way slab system. Concrete 3 design of concrete beam and slab twoway slab. Flat slab system is an important division of concrete floor system. One way slab reinforcing detail typical planmarketplace, your source for quality cad files, plans, and details.
Bending will take place in the two directions in a dishlike form. Hence, two way slab is adopted where cranked bars main bars are provided on both sides of the slab. Twoway slab article about twoway slab by the free dictionary. Also is it necessary to use other software with max to create such animation. The following example illustrates the design methods presented in the pca book simplified design. The behavior and the reinforcement of a one way slab connected to a cantilever are described below. Slab may be supported on walls or beams or columns. For approximate manual analysis of two way slab of rooms, we know that two way slabs of rooms are not only continuous along the long direction but also continuous along the short direction with the verandah slab. Which topics do you need to cover to ace microsoft az900 exam. I have developed a microssoft excel software for design of a two way rcc slab. One way slab reinforcing detail typical cad files, dwg. These slabs are constructed to provide flat surfaces, usually horizontal, in building floors, roofs or other types of structures.
They may be supported on two opposite sides only fig. The behavior and the reinforcement of a oneway slab connected to a cantilever are described below. Beams of width and depth are provided on all column lines. The results of the parametric analysis indicate that the deflection of posttensioned twoway slab is more affected by the span length than by the other variables. Two way slab is a slab supported by beams on all the four sides and the loads are carried by the supports along both directions, it is known as two way slab.
In site how we can identify one way slab and two way slab. Twoway concrete slab with beams spanning between supports. From framing layout all the way through to detail drawing production, safe. Reinforcement detailing of reinforced concrete slabs. Determine moments at critical sections in each direction, normally the negative. Oneway and twoway slabs oneway slabs transfer the imposed loads in one direction only.
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