None way slab design procedure pdf free download

Design procedure the basic design procedure of a twoway slab system has five steps. One way slab design procedure with example design of one. Two way slab design by direct design method as per aci 31811. Reinforced concrete design 1 design of slab examples and. Slab may be supported on walls or beams or columns. 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. Pdf the trend of construction of flat slab system is very common in. 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. A discreteelement method of multipleloading analysis for twoway bridge floor slabs by john j. Section 8 guidelines for guide rail design and median barriers. Step 2 design forces draw panel of slab and indicate maximum design moments, shears and in. Whatever may be the width of the slabs it should always be designed for a width of equal to one metre and the same design should be adopted for the rest of the slab.

Ce 433, summer 20 slab design example 1 5 design a one. Beams or slabs over free end supports, where a member is built into a masonry wall. Oneway and two way slabs one way slabs transfer the imposed loads in one direction only. Analysis and design of slabs one way civil engineers pk. There are many methods that are used to analyze twoway slabs and the precision of. A monolithic reinforced concrete floor is to be composed of rectangular bays measuring, as shown. Computational analysis of rcc slab simply supported ijrte. One way simplysupported and continuous solid slab bending. Lb2 is one way slab lb download free a spreadsheet to design and analysis staircase and details of the drawing. Chapter 3 design of rectangular beams and oneway slabs 12 h a 12 strip in a simply supported one way sl ab. Foundations 1 practical design to eurocode 2 the webinar will start at 12. Ribbed slabs oneway joists introducing voids to the soffit of a slab reduces dead weight and increases the efficiency of the concrete section. The post one way reinforced concrete slab how to design it. Chajjas and verandahs are an practical example of one way slab.

This paper focuses on analysis of twoway ribbed and waffle slabs with hidden beams. One way reinforcement in concrete slab is something we found very structurally explained in the video bellow. Distribute moments transverse at critical sections to column and middlestrip and if. Here are the steps for the design procedure for one way slab in steps. The width of the clear zone lc varies with the speed, roadside slope and horizontal roadway alignment. Slab supported on two sides and bending takes place predominantly in one direction only is called one way slab. The two classifications are oneway slab and twoway slab. If none of the values satisfies, you need to change d. No beam, free layout and large windows create bright and open spaces in flat slab floors. Reinforcement detailing of reinforced concrete slabs. Manual for design of slabs, pile caps and footings. Oneway and twoway slabs oneway slabs transfer the imposed.

The two classifications are one way slab and two way slab. Chapter 3 design of rectangular beams and oneway slabs. Maximum moments of one way slabs if lylx design as a two way slab if lxly 2. Bending will take place in the two directions in a dishlike form. Left click save target as and save the file to a desired folder on users computer. Design procedure of twoway slabs using aci moment coefficients. 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. Solid slab free download as powerpoint presentation. These materials are originally located at different websites. Beams and one way slabs how to design concrete structures using eurocode 2 design procedure a procedure for carrying out the det ailed desi gn of slabs assumes that the slab thickness has previously been determined during conceptual design. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems. Design comparison of slab system by direct design method and equivalent frame. Recommendations for finite element analysis for the design.

Simple span reinforced concrete slab bridge rating example. Oneway and twoway slabs university of asia pacific. When a slab is supported on all four sides and the ratio of long span to short span is equal or greater than two, it will be considered as one way slab. Design procedure the basic design procedure of a two way slab system has five steps. Slab slabs are an important structural component where prestressing is applied. A one way slab is simply a very wide beam that spans between supports.

Other types of rectangular slabs and nonrectangular. Difference between one way slab and two way slab simple. Pdf one way slab design nscp 2015 free download pdf. Design of slab examples and tutorials by sharifah maszura syed mohsin example 1. One way slab here i solve a probleam based on the one way slab, the diamentions are provided in the probleam 1st determine the aspect ration and with respect to the aspect ratio the type of slab.

Total load is nothing but, w i can say, in this case which is. In two way slab, the ratio of longer span l to shorter span b is less than 2. Pdf a simplified approach for analysis and design of. Reinforced concrete slabs are used in floors, roofs and walls of buildings and as the decks of bridges. The finite element method is commonly used to design the reinforcement in concrete slabs. Pdf design comparison of slab system by direct design method. 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 following section describes the design procedure for roof slab, silo wall, silo hopper. Generally, there are two types of slab which are one way and two way slabs. The floor system of a structure can take many forms such as in situ solid slabs, ribbed slabs or precast units.

Appendix a costeffectiveness selection procedure in the roadside design guide, aashto, 2006. Flat plate concrete floor system does not use beams between columns or. This entry was posted in excel sheets and tagged excel sheets, one way slab design excel sheet, one way slab design spreadsheet, slab design excel sheet, spreadsheets by civilengineerspk. Additional information for shear wall and transfer structures is given in cl. Oneway and twoway slabs oneway slabs transfer the imposed loads in one direction only. In this work the cost optimization design of rc oneway slabs was performed by the. Twoway posttensioned slabs with bonded tendons by kenneth b. Reinforcement detailing of a slab is done based on its support conditions. Design of reinforced concrete structures ii twoway slabs. These slabs are utilized in floors and roofs of buildings and usually combined with the supporting beams. The ratio for a twoway spanning slab should be based on the shorter span.

The procedure of the design of oneway slab is the same as that of beams. In this article, i will discuss one way slab design procedure with example. The load on the slab is carried by the short span in one direction. Design of reinforced concrete structures ii twoway slabs 1 1. 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. Right click the excel icon for the appropriate jurisdiction. Analysis of two way ribbed and waffle slabs with hidden beams. Reinforced concrete slab and beam design software adaptrc. Assume partitions cannot be damaged by deflections. One way slab design excel sheet civil engineers pk. Slabs are constructed to transfer loads to the beams with. 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. A slightly deeper section is required but these stiffer floors facilitate longer spans and provision of holes.

Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. They may be supported on two opposite sides only fig. Before we start the design of slabs, let us see what our words says related to your effective span. When slab is supported on two opposite sides only, total load is carried along the perpendicular direction of supporting beams. Manual for design and detailing of reinforced concrete to the code. Analysis and design of one way and two way slab in staad. Pdf cost optimum design of reinforced concrete simply. Oneway slab twoway slab flat plate flat slab grid or waffle slab 7. 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. Beams of width and depth are provided on all column lines. Slab supported directly by columns are called flat slab.

For 1m slab width, moment, shear force, one way continuous slab for continuous slab, moment and shear force can be obtained from table 3. In case of one ways slabs, the aci approximate analysis is applicable to one way slab system where a one way slab is continuous with a one way slab. Flat slab analysis, design and detailing pdf civil. A reinforced concrete slab is built integrally with its supports and consists of two equal spans, each with a clear span. Parameters include support conditions nine cases, span ratios lalb 0. Determine moments at critical sections in each direction, normally the negative moments at supports and positive moment near midspan. Pdf the paper presents the cost optimization of reinforced concrete simply supported oneway slabs under uniformly distributed. Flat slab analysis and design pdf flat slab design pdf 1. The twoway slab shown in figure below has been assumed to have a thickness of 7. Simply supported one way slab a rectangular reinforced concrete slab is simplysupported on two masonry walls 250 mm thick and 3.

The design procedure for a uniformly loaded oneway reinforced slab can be divided in the following steps. When slab is supported at all sides and lengthwidth 2 of a slab panel. Master of science and hereby certify that, in their opinion, it is worthy of acceptance. Design procedure steps for one way slab slab design steps. More detailed advice on determining design li fe,actions, material properties, methods of analysi s. For those who do not know what are the des ign requirements of a slab. These are the direct design method presented in chap. The slab has to carry a distributed permanent action of 1. In order to simplify the analysis and to be able to use the superposition principle for evaluating the effect of load combinations, linear analysis is generally adopted even though concrete slabs normally have a pronounced nonlinear response. Analysis and design of slabs, one way slabs, online free slab design, design of slabs one way, free slab design online, design procedure for one way slab. A discreteelement method of multipleloading analysis for.