One way slab design spreadsheets to eurocode 2 engineering. Design of a two way rcc slab structural engineering. Download two way slab design excel sheet template for free. Calculation of approximate depth from deflection criteria cl 23. One way and two way slabs as floor systems are the most conventional forms of. For 1m slab width, moment, shear force, oneway continuous slab for continuous slab, moment and shear force can be obtained from table 3. 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. Aug 15, 2016 download code one way slab design spreadsheet. Flat slab analysis and design free version download for pc. The ratio lb which is less than 2 is known as two way slab. A one way slab is a slab in which its length divided by its breadth is greater than or equal to 2. Oneway shear results are available through display show reinforcement display type change to shear reinforcement. The following simplified design is valid when length2width. Analysis and design of slabs one way civil engineers pk.
The necessary bars derive from the calculated required reinforcement. 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. The program is divided into three separate screens, which correspond to the three major areas of concern in the design of a posttensioned member. On the other hand one way slabs span in shorter direction and is designed for one way bending. In its design mode, the program determines the deflection and reinforcement for a user defined geometry, material and loading. Two way slab design oneintheeye structural 3 jun 08 05. This check is based on design strips, and follows a procedure similar to that for beam shear design. It is based on a single story frame, featuring the equivalent frame modeling of the aci code as an option. Useful rcc slab design app with clean and intuitive user interface. Reinforcement implementation, static and dynamic analysis the structural frame consists of four columns, two beams and one slab. Design of an oneway reinforced concrete slab with rcsolver software program according to eurocode 2 specifications. Detailed calculation steps presented for verification. One way slab is a slab which is supported by beams on the two opposite sides to carry the load along one direction.
The analysis and design follow the equivalent frame analysis method of the aci code, which considers a onebay wide strip of the floor system as a continuous frame. While two way slabs also consist of two types namely simply supported two way slab and constrained slab. Usually, when a slab is supported by a beam the support is considered to be pinned. In other words, it can be said that, twoway slabs span in both directions. Posttensioned, reinforced concrete slab design software ram. Oneway wide module joist slab in the lower middle is a variation on the oneway. Bondek design softare welcome to the lysaght bondek design software user guide. For example, when parallel walls connect to either side of a continuous slab, oneway action results. Economically design posttensioned and reinforced concrete floors including slabs, mats, and rafts, with exceptional visibility into compliance, efficiency, and practicality.
Design of a two way rcc slab structural engineering forum. Oneway slab design spreadsheet civil engineering community. Ce 433, fall 2006 slab design example 1 6 design a oneway slab for an exterior bay of a multistory office building using the information specified below. Safe provides unmatched benefits to the engineer with its truly unique combination of power. The oneway slab is deflected in one way direction and primary reinforcement is placed in one direction whereas. Design of slab examples and tutorials by sharifah maszura syed mohsin example 1. Total load is carried in the direction perpendicular to the supporting beam. The spreadsheet named rcc31 designs to bs 8110 and it is free. In a finite element software like scia engineer, when the slab is supported. Slab engineering reinforced concrete slab design assistant. I have developed a microssoft excel software for design of a two way rcc slab. Plan view of floor system assume partitions will not be damaged by deflections. Powered by the equivalent frame method of analysis and design per latest american aci 31814 and canadian csa a23.
This spreadsheet program provides for the design and analysis of posttensioned concrete oneway beam and slab systems and twoway flat plate slab systems. When a rectangular slab is supported on all the sides and the lengthtobreadth ratio is less than two, it is considered to be a twoway slab. According to the way loads are transferred to supporting beams and columns, slabs are classified into two types. The ratio of longer span l to shorter span b is equal or greater than 2, considered as one way slab because this slab will bend in one direction i. Download free demo updated august 8, 2019 soilstructure slab on grade software simplifies the calculation of a. An easytouse and learn software for the design, analysis, and investigation of reinforced nonprestressed. One way slabs are such slabs in which the loads are shared only by the shorter direction of the slab. Oneway slabs one way slabs are the easiest to design as the direction is simple and are usually designed as set of beam strips spanning in one direction. The slab has to carry a distributed permanent action of 1. Detailing and design of earthquake resistant buildings made of reinforced concrete. Application of lb ratio in first figure slab is supported on two opposite sides only. Jun 14, 2017 download two way slab design excel sheet template. Yes, the software does check one way shear in two way slabs. One way slab is supported on two opposite side only thus structural action is only at one direction.
One way slab has two types namely simply supported slab and one way continuous slab. Reinforced concrete slab and beam design software adaptrc. Sep 12, 2019 a one way slab is a slab in which its length divided by its breadth is greater than or equal to 2. Nov 27, 20 one way slab oneway slabs are those slabs with an aspect ratio in plan of 2. Advanced slab design mode enables concrete slabs defined with or without holes to be designed using the ramconcept or adaptbuilder software. This system is similar to the twoway flat plate system except there is a drop panel to provide extra thickness around the columns. For the simplicity in design, one way slabs are designed in per meter strips.
One way slab is supported by two parallel beams or walls. On the other hand oneway slabs span in shorter direction and is designed for one way bending. One way wide module joist slab in the lower middle is a variation on the one way. This spreadsheet is an extremely efficient tool and allows to quickly design two way slabs to aci code. If a slab is supported on all the four sides but the ratio of longer span l to shorten span b is greater than 2, then the slab will be considered as one way slab. Types of one way slab one way slab may be solid hollow ribbed 6. Safe is the ultimate tool for designing concrete floor and foundation systems. Calculate aspect ratio aspect ratio 2 longer spanshorter span 2. Slabs are usually used in floor and roof construction. Two way slabs are normally supported from four sides. Slab types can be decided through side ratio calculation through bs8 110 reference such as. Simply supported one way slab a rectangular reinforced concrete slab is simplysupported on two masonry walls 250 mm thick and 3. Rcc slab design is a free app for designing one way and two way reinforced concrete slab systems as per indian standards.
To enforce oneway action, assign small m11 or m22 stiffness modifiers to the slab. For example, when parallel walls connect to either side of a continuous slab, one way action results. These modifiers, available through assign area stiffness modifiers, should be applied relative to the local axes and the desired direction of oneway action. Here ratio of longer span of slab to the shorter span of slab is greater than 2.
Nov 14, 2018 in this video lecture you are able to learn about analysis and designing of rcc slab by using staad pro v8i software. The rest of the floor can be slightly thinner with less dead weight. Safe provides an immensely capable yet easytouse program for structural designers, provideing the only tool necessary for the modeling, analysis, design, and detailing of concrete slab systems and foundations. If the ratio of longer span to shorter span is more than two, the slab is considered as one way slab and the same is designed considering that only shorter span contributes the load and bending moments. Flat slab analysis and design designs beamless concrete slab floors flat slab or waffle slab in accordance with aci 318. Twoway slab design panel select boundary condition of slab for upliftment of corners. In the absence of advanced analysis software, like fem modelling, it was necessary to idealize the slabs, one way or two way slabs, to use direct methods for the design. These modifiers, available through assign area stiffness modifiers, should be applied relative to the local axes and the desired direction of one way action. Analysis results from software are directly used in design. Our design software will significantly assist a qualified engineer arrive at a solution which speeds the design process for floors and slabs. Two way slab design by direct design method as per aci 31811. Design floors and foundations reliably and efficiently, saving time and money, and overcoming the most common concerns you face as a designer. Calculate hmin and round it to higher 10mm multiple. Reinforced concrete design 1 design of slab examples and.
One way slab being supported on two opposite sides only leads to the structural action in single direction. The design of a oneway slab will lead to reinforcement mainly in the bearing direction. Chapter 3 design of rectangular beams and oneway slabs 12. Slab support condition solid slabs continuous at one end solid slabs continuous at both ends simple span solid slabs cantilever. This spreadsheet program provides for the design and analysis of posttensioned concrete one way beam and slab systems and two way flat plate slab systems. Detailed flexural and shear reinforcement with aci torsion effects and. Load transfer in a oneway slab, b twoway slab nilson fig. Analysis and design of one way and two way slab in staad. Chapter 3 design of rectangular beams and oneway slabs. Generally, there are two types of slab which are one way and two way slabs. Posttensioned concrete design spreadsheet program a pdh. This system is similar to the two way flat plate system except there is a drop panel to provide extra thickness around the columns. Selection of exposure classifications a1, a2, b1 and b2.
Slab engineering reinforced concrete slab design assistant becomes the ultimate tool for slab design in a simple and intuitive way. Slab consists of two types which are one way slab and two way slabs. One way slab design simplified online design of concrete structures. Slab is one of the most famous part of a construction project. Summary of bill of quantities civil works bar bending schedule. Slab types can be decided through side ratio calculation through bs8 110 reference such. One way slab design simplified online design of concrete. Definition of one way and two way slab with images. Civilax is the knowledge base covering all disciplines in civil engineering.
May 02, 2017 one way slab is a slab which is supported by beams on the two opposite sides to carry the load along one direction. Ram concept contains an advanced feature set that allows for the design of a wide variety of floor systems including posttensioned, reinforced concrete and hybrid systems, elevated slabs and matraft foundations, oneway slabs, twoway slabs, beams, and joist systems. Dec, 2017 in other words, it can be said that, two way slabs span in both directions. In this channel you can learn about online civil engineering softwares. In this specific case the bars provided are o10100. To enforce one way action, assign small m11 or m22 stiffness modifiers to the slab.
Two way slab design to aci free download and software. In a oneway slab the need for reinforcement appears mainly in the span and along the bending direction. I am submitting it to you and i want students or professional engineers to download it and use it for their studies or projects. However, a slab with length breadth ratio of not less than 1. Adaptrc is for the analysis andor design of reinforced concrete beams, slabs and floor systems. Suspended slabs can include flat, twoway, waffle, and ribbed framing systems. Oneway simply supported slab analysis and design of the slab similar to design of simply supported beam as indicate in the previous chapter. In this video you will learn how to analyze and design different slab types plate and ribbed slabs prota software. Yes, the software does check oneway shear in twoway slabs. 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. Ram concept contains an advanced feature set that allows for the design of a wide variety of floor systems including posttensioned, reinforced concrete and hybrid systems, elevated slabs and matraft foundations, one way slabs, two way slabs, beams, and joist systems. Design new and investigate existing reinforced concrete beams, standard and wide module joists, and one way slab systems. Rcc design and detailing could be performed for ten different boundary conditions option to save the design projects in local storage. Simply supported slab upliftment of corners continuous slab no upliftment.
Rectangular beams and oneway slabs page 3 of 9 design of rectangular beams and oneway slabs continued a. One way shear results are available through display show reinforcement display type change to shear reinforcement. From framing layout all the way through to detail drawing production, safe integrates every aspect of the engineering design process in one easy and intuitive environment. Difference between one way slab and two way slab simple. Bondek works as composite slab saving on concrete and reinforcement costs. The following simplified design is valid when length2width of slab and for 15ft or 4. Slabs having supports on less than four sides can be designed as one way. In the absence of advanced analysis software, like fem modelling, it was necessary to idealize the slabs, oneway or twoway slabs, to use direct methods for the design. Analysis, design and investigation of beams, one and twoway slab systems, flat plate, flat slab, waffle slab and slab bands. Models can have columns, braces, walls, and ramps connected from the floors.