One Way Slab And Two Way Slab Pdf


In two way slab, the loads are carried along with both directions. Note: The following simplified design is valid when Length>=2*Width of slab and for 15ft or 4. One-way Slabs • Normally design as a beam with cables running in the direction of the span at uniform centres. 4—Slab with drop panel. Five specimens were reinforced by GFRP bars, two were reinforced by conventional steel bars, and one was reinforced by CFRP bars. In one way slab, the shorter span is usually less than 4. Rasio bentang yang lebih panjang (l) ke bentang yang lebih pendek (b) sama dengan atau lebih besar dari 2, dianggap sebagai plat satu arah karena slab ini akan menekuk dalam satu arah yaitu pada arah sepanjang rentang yang lebih pendek. In this video I have explained the design procedure of Two-way slab. This is considered an advantage over one-way ribbed slabs, which must be calculated as an array of beams. Answer / binubal123 In two way slab reinforcement is in 2 layer @ T&B of equal dia is provided whereas in one way slab main reinf tats reinf of higher dia is provided along shorter span and nominal dia reing is provided along longer span. Two Way Slab. Hazim Dwairi The Hashemite University One-way. One of these slabs was the control specimen which was designed without lacing reinforcement steel and the other two specimens designed were with two variable lacing reinforcement ratio (0. Compare 250+ 3D scanners by price, technical specs, reviews and more. No rebar design will be done. One-Way (Beam Action) and Two-Way (Punching) Shear Considerations: For two way joist slab, it is necessary to check shear at multiple sections as defined in the ACI 318-14. For difference between One Way Slab and Two Way Slab, check out in this latest video of Civil Paathshala Please like and share this video and write your questions or suggestions in the comment. Behavior of One way Slabs & Two way Slabs. slab thickness. Accordingly, main reinforcement is required in the two directions. two-way slab systems under lateral loads. In one way slab main tensile reinforcement is placed parallel to shorter side which will be the main steel. In two way slab, quantity of steel is more when compared to one way slab. One-way slabs are those supported on two opposite edges. Looking for Commercial termite control? A well-organized termite colony can have more than a million hungry workers consuming over 100 pounds of wood per year. 9—Post-tensioned slabs. Two-way flat slab with drop panels and mushroom capitals 7. In this video discussion is made on designing two-way slabs for one-way & two-way shear because of moment transfer as well as shear strength in two-way action delivered with concrete, conventional shear reinforcement, and headed shear stud reinforcement. a concrete slab is the plane element having the depth D much smaller than its span and width. So how much does it cost to pour a concrete. (see attached picture. Slab will be 3 ft x 5 ft. 1) In one way slab two beams are only used to support slab. 3 presents two parallel methods for calculating moments in two-way slab systems. The slabs typically have spans in the range of 17 ft to 27 ft. Critical perimeter is located d / 2 from column face, where d = effective depth of slab 8. View Design of two-way slabs(D. The shear design of reinforced concrete (RC) slabs under concentrated loads calls for the definition of an effective width, which can be used to assess the slab's shear capacity. Chajjas and verandahs are a practical example of one way slab. 7 Basic span-to-effective-depth ratios 34 3. Thumb rule for one and two way slab. Two-way concrete joist system (waffle slab). Waffle Slab (Two-Way Pan Joist) Two-way joist slab, also called a waffle slab. Waffle Slab (Two-Way Pan Joist). Triangular load distribution in two way slabs. txt) or view presentation slides online. This spreadsheet performs an analysis and design of two-way spanning reinforced concrete slab. pdf] - Read File Online - Report Abuse. These slabs are constructed to provide flat surfaces, usually horizontal, in building floors, roofs or other types of structures. One Way Slab. Here are some quick difference between one way slab and two way slab. If you have to level a sloped site or bring in a lot of fill, hire an excavator for a day to help prepare the site. If you place a design strip perpendicular to the span, the design system is debatable, but I generally use two-way slab there. Based on the above fact, the slabs are classified as follow :-1) One way slab 2) And two way slab. Determine moments at critical sections in each direction, normally the negative moments at supports and positive moment near mid-span. This method was provided in the American Concrete Institute (ACI) in 1963 to design two-way slabs carried by steel beams, deep beam, or walls. txt) or view presentation slides online. Most of residential and office buildings have rooms that have two way slab. Posttensioning can strengthen a flat slab against punching shear by controlling deflections and cracking. Based on the results of both FEM and experiment, it is concluded that the CFRP-grid reinforced concrete one-way slabs could be a good alternative of the steel ones and the. For difference between One Way Slab and Two Way Slab, check out in this latest video of Civil Paathshala Please like and share this video and write your questions or suggestions in the comment. Rooms (two way slabs) are continuous with verandah (one way slab). Definition: 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. This theory, based on a mechanical model, is shown to provide a unified approach for one- and two-way shear in slabs, leading to simple design expressions for estimating the strength and deformation capacity of such members. 05 or a very small number, perpendicular to the direction of the span. *gasp* Now I have. This home features a split bedroom, open floor plan with easy care Vinly Plank wood look flooring and carpet in the bedrooms. Main reinforcement is provided in only one direction for one way slabs. The basic difference between one way and two way slab is load distribution which is depends on support condition and span lengths. However, they are easier to form and offer a flat soffit (underside). ONE WAY SLAB: A one way slab is simply a very wide beam that spans between supports. Link of previous videos: Design of One Way Slab || Part 1 - https://youtu. The beams are supported by columns at the intersections of the grid lines. In two way slab, the loads are carried along with both directions. Unformatted text preview: Design of TwoTwo-Way Slabs Flat Plate Flat Slab One-Way One Way Joist Two-Way Joist Slab with Beams Steps in Slab Design • Choose the layout and type of slab: Architectural or construction consideration • Choose the slab thickness: Adequate for deflection/shear • Choose Ch th the method th d ffor d design: i Di Directt Design Method, Elastic frame analysis. In this video i have discussed the design of one way slab on excel in detail. Design Considerations for Reinforced Concrete Flat Slab Floor System Harshal Deshpande1, Radhika Joshi2, Prashant Bangar. Also the slab is supported four sides but the length breadth ( ly/lx)ration is greater than or equal to two , the slab is designed as one way slab. Design The Two-span Continuous One-way Slab To Carry The Roof Live Load Of 30 Psf. L/B>2 is one way slab L/B<2 is two way slab. The slab support a service dead a live load of 150 psf and 125 psf, respectively. Two-Way Restrained Slab • If the slabs consist more than one panel or corner of the slab are prevent against lifting it is define as two-way restrained slab. One-way slabs, spanning between beams and forming the top flanges of the T-beams, are not shown. In two-way slab, the ratio of longer span (l) to shorter. Slab types can be decided through side ratio calculation through BS8 110 reference such as: Ly / Lx <2. This spreadsheet performs an analysis and design of two-way spanning reinforced concrete slab. If, it is below 2 then it is described as two way slab. However, the problems occur when the precast half slab is designed as the two-way slab system. Thus, L/B < 2. So, the slab is one way where L/B ≥ 2. SERVICEABILITY OF BEAMS AND ONE-WAY SLABS Slide No. In two way slab, the ratio of longer span (l. About The Author Diya. For example, the minimum slab thickness for a two-hour fire rating is 4. For difference between One Way Slab and Two Way Slab, check out in this latest video of Civil Paathshala Please like and share this video and write your questions or suggestions in the comment. The proposed slab system must meet the current code. usually one and two-way spanning slabs • Punching shear –e. In a two-way system such as a column-supported slab, the load is carried in both directions. β1 cannot be less than 0. ONE WAY SLAB: 1) One way slab is supported by beams in only 2 sides. Two way Slab (ly/lx 2 [one way slab] One way slab = longer span/Shorter span > 2. If less than 2 then it is designed as a two way slab. According to ADOSS, the interior spans due not meet the code requirements to neglect deflection. Four slabs with cutouts were tested in addition to two slabs without cutouts. This spreadsheet performs an analysis and design of two-way spanning reinforced concrete slab. 3—Corner reinforcement. TWO – WAY SLAB. 6 for the design of one-way slabs except that the bending moments and shear forces are determined by different methods for the two types of slab. Slab is one of the most famous part of a construction project. 3a): In two-way slabs, the width of the critical shear crack is assumed proportional to the slab rotation (ψ) times the effective depth of the member (see Fig. Therefore a deflection. 2 Rules of load combination for continuous one-way spanning slab panels See Section 2. design of two way slab using is 456 and sp 16 understand the difference between one way slab and two way slab and solve example as per gtu exam paper. Related Posts. One way slab usually have a rectangular plan and tend to bend along the direction of longer span (if we assum. Two way Slab (ly/lx = 2. PDF Link: https. Latest news on new products, and cutting edge research and. This paper reviews the literature regarding one-way slabs and wide beams failing in shear. Slab as per EBCS 2. 1- Flat ceilings are available in this slab because there is no beam in the middle of the cell. The three basic types are one-way slabs, two-way edge supported slabs and point-supported slab systems. parking structures is a one way slab supported on beams. Slabs having supports on less than four sides can be designed as one-way. One-way slabs are supported by two opposite sides. • In any span, the max cable sag, zd depends on the concrete cover requirements and the tendon dimensions. 3 below: Fig. 4 Alternate spans loaded 19 2. Here the ratio of longer span of slab to the shorter span of slab is less or equals to 2. Behavior of One way Slabs & Two way Slabs. One way Slab ( ly/lx > 2) 2. This paper presents experimental research conducted on full-scale one-way RC slabs strengthened using three different composites. The experimental program included testing three simply supported one-way slabs of dimensions (1500 mm length, 600 mm width, and thickness 130mm. To compare the test results concrete slabs without reinforcement and with steel reinforcement were also studied. Main steel is only provided parallel to span. The normative recommendations of NBR 6118, ACI 318 and EUROCODE 2 for the ultimate resistance of these slabs were evaluated. Two way slab design spreadsheet is a powerful excel software to ease concrete slab design. 0 (two way) Ly / Lx > 2. Teaching two-way ribbed slab analysis and design using the MathCAD program Mohammed S. In addition to offering a complete range of mill products, TIMET offers value-added services and custom products. Then, the experiment of the full-scale specimens is presented, so as to verify the outcome of the FEM research. Login / Register What are main difference between one way continuous slab and two way continuous slab? One Way Slab, Two Way Slab. A slab is a thin planar member which transmits transverse loads by bending action to its supports. (obtains relevant values from the two sections below) Width (no downstand), Member Design - RC One Way Spanning Slab Made by Date Chd. Two Way Slab. It's typically used when stiffness is important or if there are abnormally heavy loads. • Detailed calculation steps presented for verification. Two-way Slabs BS8110 material factors used: For concrete = 1. They both have different design criteria. For those who do not know what are the des ign requirements of a slab. 13 and the Elastic Frame Method presented in this chapter. Economic in the range 8 to 12 m. Main steel is only provided parallel to span. In above figure (a) represents one way slab. The invention of the hollow slab was in 1950s. The 2,212 sq. If less than 2 then it is designed as a two way slab. Chajjas and verandahs are a practical example of one way slab. To determine if the slab is two way, figure the ratio between the longer span and the shorter span. A two way slab has the main load carried in both directions. 2) The ratio of longer span panel (L) to shorter span panel (B) is equal. Often a floor is subjected to uniform pressure. The one-way bending slabs are used mostly in corridor part, and the two-way bending slabs are used in the important components of structures, such as floors and walls. There are two types of ribbed slab system. One way slabs are such slabs in which the loads are shared only by the shorter direction of the slab. Two Way Slab. longer span (l)/Shorter span (b) ≥ 2. 0 (such as slab s3 in the same figure), it is considered as one-way slab in the principal direction while taking into account the secondary stresses in rest edges. 2 span of slabs (L ) span of T beams (L ) One-way action in slabs as long as: a b ≥ L b L a h Load Transfer 1m strip Dr. 101,234 at University of Duhok. 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. 5 it behaves as one-way slab. concrete framing systems one-way framing one way solid slab one-way solid slab: walls and columns to support slab are erected first girders and beams are usually poured simultaneously with the slab to form one continuous structural unit the formwork must be supported until the concrete cures and acquires its structural strength. Load distribution pattern in two-way slab is in four sides. One way slab is a slab which is supported by beams on the two opposite sides to carry the load along one direction. PDF Link: https. submitted to the faculty of the SCHOOL OF MINES AND M ETALLURGY OF THE UNIVERSITY OF MISSOURI in partial fulfillment of the work required fo r t h e Degree of MASTER OF SCIENCE IN CIVIL E N G I N E E R I N G Rolla, Missouri Approved by. Slabs are primarily categorized as either one way or two ways. 3) Main reinforcement is provided in only one direction for one way slabs. Rasio bentang yang lebih panjang (l) ke bentang yang lebih pendek (b) sama dengan atau lebih besar dari 2, dianggap sebagai plat satu arah karena slab ini akan menekuk dalam satu arah yaitu pada arah sepanjang rentang yang lebih pendek. therefore the main reinforcements are provided perpendicular to supported direction. In today lecture, we will discuss about What is difference between one way slab and two way slab. design of two way slab using is 456 and sp 16 understand the difference between one way slab and two way slab and solve example as per gtu exam paper. Download Two way Slab Design Excel Sheet Template. , 3rd Inter. Ribbed slabs (One-way joists) Introducing voids to the soffit of a slab reduces dead weight and increases the efficiency of the concrete section. parking structures is a one way slab supported on beams. Two edge supported slab is always one-way. 27 Design Example 1 (Typical House with 2 Rooms and Verandah). One-way slabs in RAM Concept. The slabs are presented in two groups: one-way slabs and two-way slabs. One-Way Solid Slabs 50 45 45 40 Two-Way Solid Slabs 45-48 40-45 N/A N/A Beams 35 30 30 26 One-Way Joists 42 38 38 35 Typically tendons are located near the bottom fiber at positive moment regions and near the top fiber at negative moment regions with the intent to install the cable with the maximum total drape. For two-way concrete, the ratio of the longer span (L) to the shorter span (B) is less than 2. Two Way Slab Reinforcement Details. Dead bushes have a chance to drop between 0–2 sticks when destroyed. Difference between the one-way slab and two-way slabs are as follows :. One-way slabs are those supported on two opposite edges. Slabs are mainly of two types; either one way or two way. Some investigations have been conducted mainly for one-way slab based on one of the three methods: (1) theoretical analysis by equivalent single degree of freedom (SDOF) systems, (2) finite element analysis methods, and (3) the field measurements. Design Of Reinforced Concrete Structures ii Two-Way Slabs 1 1. Since 1971, all two-way reinforced systems, with or without beams, have been subject to the same integrated analysis and design procedures (Chapter 13). 14 Wateree Way , Simpsonville, SC 29680-7736 is currently not for sale. Submit Close. pptx), PDF File (. One of these slabs was the control specimen which was designed without lacing reinforcement steel and the other two specimens designed were with two variable lacing reinforcement ratio (0. C-5 One Way Two Way Slab - Free download as Powerpoint Presentation (. Two way Slab (ly/lx 2) 2. One Way slabs will not create a plate submeshed floor "slab" like the Two Way slab. When the aspect ratio is less than 3, the mechanical behavior of the slab is two-way bending. Link of previous videos: Design of One Way Slab || Part 1 - https://youtu. C-5 One Way Two Way Slab - Free download as Powerpoint Presentation (. Two way Slab (ly/lx 2 [one way slab] One way slab = longer span/Shorter span > 2. Specific construction and calculation aspects of one-way floor slabs with precast beams and hollow -core slabs. 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. Two-way slab is economical for the panel sizes up to 6m x 6m. Using the ACI moment coefficients, design the slab. PDF Link: https. One way slabs are such slabs in which the loads are shared only by the shorter direction of the slab. The bulk of the work for a new DIY concrete slab is in the excavation and form building. This is designed to ACI. automatic generation of a step by step design calculation. 13 and the Elastic Frame Method presented in this chapter. Humar and A. 6—Openings in slab systems. Design The Two-span Continuous One-way Slab To Carry The Roof Live Load Of 30 Psf. When a rectangular slab is supported on all the sides and the length-to-breadth ratio is less than two it is considered to be Dr. Many of us will be confused with differences between one way slab & two way slab, but which type of slab is used for a building totally depends on its functionality, economy, loading conditions and span. 2—Slabs without beams. One Way slabs will not create a plate submeshed floor "slab" like the Two Way slab. 002bhf Ast = 0. Read online One-way and Two-way Slabs - University of Asia Pacific book pdf free download link book now. Investigations according to Eurocodes have concluded that voided biaxial slabs may be modelled like solid slabs. A slightly deeper section is required but these stiffer floors facilitate longer spans and provision of holes. Two-way slab is economical for the panel sizes up to 6m x 6m. simply supported; or continuous/fixed, direction/ method of spanning i. Sure, certain proportions are better suited for one-way or two-way slab design, but it would be outright dangerous to assume the structural behavior of a slab based solely on its shape. View more property details, sales history and Zestimate data on Zillow. 2 WAFFLE SLAB DESIGN 1. I just realised now that if I stop the one way slabs befor they meet the 2 way meshed slab (last bay close to the core) the beams get the loads correctly but as soon as I extend it none of the beams take any load (it still shows the different colors but no load is generated over beams). RCC Slab Design depends on the on the dimensions of the slab after which the slab is termed as a one-way slab or a two-way slab… In the design of RCC structures, Column Design and Beam Design are to be done before we start with RCC Slab Design… Basic Rules followed in the design of simply supported Slab. Slab Serviceability cantilever both-ends continuous one-end continuous simply supported Minimum Slab Thickness End Restraint Condition 20 l 24 l 28 l 10 l Table 9. Two Way Slab. This system consist of both one way and two way slabs. Its made of concrete. In general, if the load from the slab is delivered to the beams in one direction, then the system is one-way. pdf from CIVIL ENG. This type of slab is expected to behave like a general two-way reinforced concrete slab because it has segmented voids, rather than the continuous voids of hollow core slabs. Using near-surface-mounted carbon-fiber-reinforced polymers restored the load capacity of repaired one-way and two-way slabs but was more effective for one-way slabs. 7 Basic span-to-effective-depth ratios 34 3. 5m while in two way slab, the shorter span is usually greater than 4. Disadvantage. Design The Two-span Continuous One-way Slab To Carry The Roof Live Load Of 30 Psf. Two way slabs are generally thicker and span relatively shorter spans (two directions) than one way slab and beam systems. Therefore design of one way slab is simple and easy. Two way Slab (ly/lx 2) 2. LaCantina is a pioneer in designing and manufacturing large opening door systems. Two way slab being supported on four sides the load will be carried in both the directions. Difference Between One Way Slab & Two way slab. A slightly deeper section is required but these stiffer floors facilitate longer spans and provision of holes. Muscat, together with brothers Alfred and George Degiorgio, are accused of planting and detonating the bomb. 2) The ratio of longer span panel (L) to shorter span panel (B) is equal or greater than 2. The bending of these slabs takes the shape of a dish-like form when loaded uniformly. PDF Link: https. Required reinforcement is displayed in a very. The main steel reinforcement is done in only a shorter span so that bending does not get much or to resist the bending in a shorter span. In this video all are detailed learn about slab reinforcement details for load bearing wall and framed structured one way and two way slab detailing are explained as per SP34. In this video i have discussed the design of one way slab on excel in detail.