Two-way slabs are slabs that are supported on four sides. In two-way slabs, the load will be carried in both directions, thus main reinforcement is provided in both directions for two-way slabs. The slabs are considered as spanning two-way when the longer to shorter span length is less than a ratio of two ** TWO WAY SLAB DESIGN BY DIRECT DESIGN METHOD - Free download as Excel Spreadsheet (**.xls / .xlsx), PDF File (.pdf), Text File (.txt) or read online for free. TWO WAY SLAB DESIGN BY DIRECT DESIGN METHOD EXCEL SHEE This is a part of his project 'Economic design of two way RCC slabs' under Prof S.C. Dutta, IIT Bhubaneswar. This tool provides a excellent economic design of a RCC slab spanning in two directions under loading conditions provided by the user keeping in mind all design considerations prescribed in IS 456:2000 code When the ratio (L/S)is less than 2.0, slab is called two-way slab, as shown in the fig. below. Bending will take place in the two directions in a dish-like form. Accordingly, main reinforcement is required in the two directions. Design Of Reinforced Concrete Structures ii Two-Way Slabs

- e slab type and layout Choose slab thickness that should be adequate for avoiding excessive deflections and satisfy shear at the interior and exterior columns. Choose design method (direct design method in this case
- Design of Slab(Two Way) Excel Sheet The specified design strength of the concrete, is 25 MPa () and the specified yield strength of the reinforcement, fy, is 400 MPa
- Direct design method of two way slabs (8.10.2 ACI-2014): Limitations: Moments in two-way slab can be found using direct design method subject to the following restrictions: 8.10.2.1 There shall be at least three continuous spans in each direction. 8.10.2.2 Successive span lengths measured center-to-center of supports i
- Steps of direct design method: 1.Calculate the static moment acting on each panel in each direction (long and short). 2.Distribute the static moment among positive and negative moment for each panel in each direction. 3.Distribute the calculated moments between the column and middle strips
- Direct Design Method 1. Introduction:The direct design method consists of a set of rules for distributing moments to slab and beam sections in a two-way slab system. 2
- ologies involved.This lecture is continuation of previous lecture and.
- Two-Way Slab Analysis and Design - Using Equivalent Frame Method (EFM) ACI 318 states that a slab system shall be designed by any procedure satisfying equilibrium and geometric compatibility, provided that strength and serviceability criteria are satisfied

Slabs can be designed by Direct Design Method known as DDM and another method for design is Coefficient Method which is the easier one. Slabs are mainly of two types; either one way or two way. If the ratio of longer dimension of the slab panel to the shorter dimension is greater than or equal to 2 then it is designed as one way slab Direct Design Method for Two- way Slab Minimum of 3 continuous spans in each direction. (3 x 3 panel) Rectangular panels with long span/short span 2 Method of dividing total static moment Mo into positive and negative moments. Limitations on use of Direct Design method 1 Direct Design Method for Two-way Slab Limitations on use of Direct Design method 3. Successive span in each direction shall not differ by more than 1/3 the longer span. 4. Columns may be offset from the basic rectangular grid of the building by up to 0.1 times the span parallel to the offset. 5. All loads must be due to gravity only (N/A to.

One way and Two way Slab Design as per ACI, IS, BS Code with Excel: Duration: 30 Mins: Language: English: Format: MP4: Size 190 MB: Download Method: Direct Download Download Links: BECOME A MEMBER VIEW DOWNLOAD LINK Direct Design Method (DDM)- Flat Plate Design - Enables to File Type: xlsx: Download File. Two Way Beam Supported Slab by Direct Design Method(DDM) Download the Excel file -Two way Beam Supported slab. beamsupportedslab_directdesign_1_.xlsx: File Size: 275 kb: File Type: xlsx: Download File The two design procedures shown in ACI 318- 14: Direct Design Method (DDM) and the Equivalent Frame Method (EFM) are illustrated in detail in this example. The hand solution from EFM is also used for a detailed comparison with the analysis and design results of the engineering software program spSlab. Figure 1 - Two-Way Flat Concrete Floor Syste

Direct Design Method Two Way Slab Example. Http Www Uap Bd Edu Ce Anam Anam Files Rc 20design 20ii Pdf. Solved For The Flat Plate Floor In Example 13 3 Find The Foll. Https Uomustansiriyah Edu Iq Media Lectures 5 5 2018 12 02 07 48 20 Pm Pdf The basic design procedure of a two-way slab system has five steps. Determine moments at critical sections in each direction, normally the negative moments at supports and positive moment near mid-span The Procedure of Two Way Slab Design by Direct Design Method: There are the following steps in this procedure such as; Determine slab layout and type and for avoiding excessive deflections and satisfy shear at the interior and exterior columns, choose slab thickness that should be adequate

One-way slab design. A reinforced concrete slab is built integrally with its supports and consists of two equal spans, each with a clear span of 15 ft. The service live load is 100 psf, and 4000 psi concrete is specified for use with steel with a yield stress equal to 60,000 psi. Design the slab, following the provisions of the ACK Code Direct Design Methods (DDM): Limited to slab systems with uniformly distributed loads and supported on equally spaced columns. Method uses a set of Co-efficents to determine the design moments in critical sections. Two- way slab systems do not meet the limitations of the ACI code 13.6.1 must be analyze causing more accurate procedures. 2 Books Name: Two Way Slab Design Excel Sheet Author/Writer: allaboutfreebooks.com Publisher: allaboutfreebooks.com Slab is a broad and flat structural member mainly used on modern building. The length and width of slab is much higher than that of its thickness.Generally slab thickness varies between 4 to 20 inches where as its length and width varies between 10 to

ACI 318 provides two alternative methods for designing two-way slabs for concrete, The equivalent frame method? (EFM) and the direct design method (DDM). This section will explain how the direct design method is used. For the Direct Design Method moments are found using a simplified procedure similar to analyzing a One-Way Slab This Whiteboard tutorial explains step by step procedure of designing of two-way slab Panel . . #1 One-way Slab:One-way slabs, supported by parallel walls or.. The coefficient **method** may be the simplest, easiest and the quickest approach for the **design** of **two-way** **slab** supported by edge beam on all **slab** sides. 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 Analysis and Design of Slabs Two Way Two Way Edge Supported Slabs Two-Way Slabs. Slab resting on walls or sufficiently deep and rigid beams on all sides. Other options are column supported slab e.g. Flat slab, waffle slab. Analysis and Design of Slabs Two Way. Two-way slabs have two way bending unlike one-way slab. Analysis and Design of Slabs. The direct design method was developed from theoretical procedures for determination of moments in slabs, requirements for simple design, construction procedures, and performance of existing slabs. Therefore, the slab system, to be designed using the direct design method, should conform to the following limitations as given by ACI Code 13.6.1: 1

Using the direct design method, design the typical exterior flat- slab panel with drop down panels only. All panels are supported on 500 mm square columns. The slab carries a uniform service live load of 5 kN/mʻ and service dead load that consists of 2.00 kN/m of finished in addition to the slab self-weight Top-Marken ständig reduziert. Kostenlose Lieferung möglic

- The direct design method is an approximate method used to analyze two way slabs. Herein the introduction to direct design method. title Analysis of Two-Way Slabs Using Direct Design Method 2017 by user abdulah alrfydah under license Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Version History Cite this wor
- ation of Two way slab.
- Two Way Reinforced Concrete Slab Design Spreadsheet (Working Stress Design Coefficient Method) Download Spreadsheet. Share this: Click to share on Twitter (Opens in new window) Click to share on Facebook (Opens in new window) Related posts. Eccentrically Loaded Column Design Spreadsheet (Reinforced Concrete Design

* Essential spreadsheet for two way slab design*. This spreadsheet is an extremely efficient tool and allows to quickly design two way slabs to aci code. Required reinforcement is displayed in a very. Analysis of **Two-way** **Slabs** by Coefficient **Method** The determination of exact moments in **two-way** **slabs** with various support conditions is mathematically formidable and not suited to **design** practice. Various simplified **methods** are therefore adopted for determining moments, shears and reactions in such **slabs** In case of two way slabs, the moment coefficient tables are applicable to two way slab system where a two way slab is continuous with a two way slab. 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. 28 Design Example The Direct design method specified by ACI isn't applicable for two way ribbed slab with irregular columns layout. Is it possible to use loads in each direction from heillerborg strip method (enhanced based on edge condition as in nelson book) and distribute them to the ribs, and then use the ribs reactions to design the main beams

For making a design diagram, it is necessary to have an efficient method for calculating the required area of bars. In this study, direct design method is employed for efficient and fast calculation of required area of reinforcement. The formulation developed for direct design method in this paper is according to ACI 318-14 Building Code [31] Download Two Way Slab Design by Direct Design Method Comments. Report Two Way Slab Design by Direct Design Method Please fill this form, we will try to respond as soon as possible. Your name. Email. Reason. Description. Submit Close. Share & Embed Two Way Slab Design by Direct Design Method. 3. Choose design method. Equivalent frame method- use elastic frame analysis to compute positive and negative moments. Direct design method - uses coefficients to compute positive and negative slab moments 4. Calculate positive and negative moments in the slab. 5. Determine distribution of moments across the width of the slab

The direct design method is not limited to rectangular sections with simple bar arrangement. This method could be used to calculate the required area of reinforcement for any column or shear wall section with any arbitrary bar arrangement. In addition, designing a section using the direct design method would provide the following information: 1 Two-Way Slabs: Elastic Frame Method 14-1 INTRODUCTION A23.3 presents two parallel methods for calculating moments in two-way slab systems. These are the Direct Design Method presented in Chap. 13 and the Elastic Frame Method presented in this chapter. In addition, A23.3 Cl. 13.6.1 allows other methods if they meet certain requirements Direct Design Method of Flat Plates per ACI 318-02 Two-way slabs are inherently difficult to analyze by conventional methods of statics because of the two-way bending occurring. Accurately determining the moments on a two-way slab is typically accomplished by finite element computer analysis. Computer analysis of two-way slab Thus the design of a two-way floor system (including two-way slab, flat slab, and flat plate) is reduced to that of a rigid frame; hence the name equivalent frame method. (2) General Design Concept of ACI Code As in the case of design of actual rigid frames consisting of beams and columns, approximate methods of analysis may b

FULL HAND CALCULATION, ANALYSIS AND DESIGN OF MULTI STORY BUILDING. METHODS OF PREVENTION. By Duong Van Binh. IRJET-V5I5184.pdf. By IRJET Journal. Design and Analysis of Residential Building using E-TABS. By IRJET Journal. Design and Analysis of Seismic Resistant Multi-Storeyed Apartment Building. By dinesh pokharel 37 Direct Design Method (DDM) ACI Code Limitations of the direct design method: Design of slab system within the following limitations by the direct design method shall be permitted: 1. Shall be a minimum of three continuous spans in each direction. 2. Panels shall be rectangular with a ratio of longer to shorter span c/c of supports within a panel not greater than two possibility is avoided of unanticipated deflection of a two-way slab larger than what the ACI deflection tables present. 11.5 DESIGN AND ANALYSIS PROCEDURE: DIRECT DESIGN METHOD. - 11.5.1 Operational Steps Figure 11.9 gives a logic flowchart for the following operational steps

Two-way slab:- A slab is considered two way slab if 1.Slab is supported on all four sides. 2.The span ratio ly/lx is less then or equal to 2 . Design Procedure :- Case I:- Corners are not prevented from lifting. So we use Rankine Grashaff Theory C.. Example of Design. The slab is the horizontal structural component that provides a flat and purposive surface. Such a surface may be floor, roof or ceiling. One way slab & Two-way slab are the types of the slab. Slab carries the loads imposed on it and duly transfers the forces either in a one way or in a two-way mechanism

The CivilWeb Slab Design Excel Sheet Suite is a suite of 5 spreadsheets for reinforced concrete slab design. The suite includes two design spreadsheets covering one way and two way spanning slabs, a spreadsheet for punching shear analysis and design and two structural analysis spreadsheets. Together this provides the designer with all the tools. ax and ay coefficient are obtained from IS 456 tables -26, fig 10.3 shoe nine separate possible arrangement for a two-way restrained slab. 5. Effective Depth of Flexure: Mu = 0.138 . fck . b.d.d. Heaer find d. Mu = Sp 16 P 10 Table C. Fck = strength of concrete. b = 1 m area required load. 6. Reinforcement in Mild Strip : Along L Punching Shear Reinforcement on Slab 39 One Way Joist 41 Two-Way Slab Analyzed by the Direct Design Method 47 Development Length of Bars in Tension 50 Group of Headed Studs in Tension Near an Edge 52 Shear Strength of Slab at Column Support 54 Simple Span Deep Beam by Strut-and-Tie Model 56 Continuous Deep Beam by Strut-and-Tie Model 6 42 Basic Steps in Two-way Slab Design Choose layout and type of slab. Choose slab thickness to control deflection. Also, check if thickness is adequate for shear. Choose Design method Equivalent Frame Method- use elastic frame analysis to compute positive and negative moments Direct Design Method - uses coefficients to compute positive and negative slab moments 1

Two-way slab: If the proportion of long span to short span is under 2, then the slab is called a slab that stretches in two directions or a two-way slab. TWO WAY SLAB DESIGN PROCESS : 1. Select layout and type of slab. The type of slab is greatly influenced by architectural and construction considerations. 2 Two way slab / Drop panels My redesign of Fordham Place will comprise of a 9 flat slab with 5 ½ drop panels. Materials used for this redesign is normal weight concrete with compressive strength of 4ksi and steel rebar with a yield stress of 60 ksi. Floor slab thickness was determined by ACI 318-02 table 9.5(c) using exterio CE 403, Fall 2015 Slab Design Example 1 / 5 (ACI 318‐11 Referenced) Design a one‐way slab for an interior bay of a multi‐story office building using the information specified below. Neglect compression reinforcement. Assume partitions cannot be damaged by deflections 2 Way Spanning Slab Analysis Spreadsheet. BS8110 provides a guide for undertaking analysis of simple slabs spanning in two directions, subject to universally distributed loads (UDL). This spreadsheet undertakes these calculations and returns design moments for use during detailed design. Can model slabs with any combination of edge conditions Method of RCC slab design as per IS 456 Reinforced concrete slab design and detailing guidelines for depth of slab, loads on slab, reinforcement guide for one-way and two-way slabs as per IS 456:2000 have been tried to present here. Following are the RCC Slab Design and Detailing guidelines..

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. • This condition occur when the slabs are connected monolithically with support. • The design bending moment of two-way restrained slab can be calculated as follows; Moment at short. Flat slabs can be analysed using the frame equivalent method, or by using the simplified analysis method which involves the use of coefficients. On the other hand, finite element analysis using computer programs can be used. In the Eurocodes, the analysis of flat slab is the same as that recommended in BS 8110 Design of Sample Supported Bridge slab. Short Description: this excel sheet is based on the design of sample supported bridge slab upto 40 ft long span. the calculation is based on ACI code. Submitted By: zaidkhan Two methods of design are available for flat slabs: 1. Direct design method . 2. Equivalent frame method . Direct design method: (Cl.31.4.1, IS456-2000) Requirements for direct design methods are, 1. There must be atleast three continuous spans in each direction . The panels should be rectangular with ly/lx = l 2 /l 1 ratio < 2. 3

The results obtained from the method are usually very conservative. Some of the formulas can be obtained from Reynolds and Steedman (2005) for transfer of load from two-way slab to beams. The formulas are presented below; Two-way slab (ly/lx < 2) Long span: p = nlx/2 (1 - 1/3k2) Short span: p = nlx/3. One-way slab (ly/lx > 2) Long span: p. calculate fineness modulus two way slab design based on aci 318 11 using finite element method design of slab two way excel sheet concrete mix design excel sheet design of stair case with central stringer beam check list for block brick work rcc dog legged staircase design excel sheet, two way slab and not suited to design practice. Various simplified methods are therefore adopted for determining moments, shears and reactions in such slabs. Quite popular and widely used among these methods is one using 'Moment Coefficient' based on the 1963 ACI Code, for the special case of two-way slabs supported on four sides by relatively stiff beams other . Distribution moments on the foundation and interior plate field differently due to direct Planning Method using a great moment coefficients in pedestal while the Finite Element Method using transition stiffness matrix Keywords:Direct Design Method, Finite Element Method, Two way slab, SAP 200

Design of Slab (Examples and Tutorials) by Sharifah Maszura Syed Mohsin Example 1: Simply supported One way slab A rectangular reinforced concrete slab is simply-supported on two masonry walls 250 mm thick and 3.75 m apart. The slab has to carry a distributed permanent action of 1.0 kN/m2 (excluding slab self-weight) and a variable action of 3. According to ACI Code 13. 5.1. 1, all Two-way slab system are to be analyzed and designed either by the Direct Design Method or the Equivalent Frame Method for gravity loads only. For lateral loads, separate elastic analysis should be worked out Sign Design Based on AISC 360-10/16, ACI 318-19, and IBC 1807.3. Wind Girt Deflection Analysis of Wood, Metal Stud, and/or Steel Tube. Lateral Loads of Storage Racks, with Hilti & Red Head Anchorage, Based on ASCE 7-16. Wind Analysis for Tornado and Hurricane Based on 2019 CBC/2018 IBC 423 & FEMA 361/320 Design of Rectangular Beams and One-Way Slabs. Analysis and Design of T Beams and Doubly Reinforced Beams. Serviceability. Bond, Development Lengths, and Splices. Shear and Diagonal Tension. Introduction to Columns. Design of Short Columns Subject to Axial Load and Bending. Slender Columns. Footings

Flat Slab Analysis and Design. Flat Slab Analysis and Design designs beamless concrete slab floors (flat slab or waffle slab) in accordance with ACI 318. The analysis and design follow the equivalent frame analysis method of the ACI code, which considers a one-bay wide strip of the floor system as a continuous frame Several methods for concrete slab design have been provided below including: One Way Concrete Slabs. Temperature Steel. Minimum Thickness for One-Way Slabs. One-way Slab Flexural Design. Concrete 1-way Slab Design Spreadsheet (Calculator) (flexural checks only) One-Way Slab Shear Design. Two Way Concrete Slabs. Two-Way slab Direct Design Method Design Procedure 1. Choose a trial slab thickness (h). 2. For each axle load class: a) Determine N i for fatigue failure. b) Divide n i by N i to determine fatigue damage factor d i. c) Determine N i for erosion failure. d) Divide n i by N i to determine erosion damage factor d i. 3. Sum fatigue and erosion damage factors over all of th FOREWORD The Reinforced Concrete Design Manual [SP-17(11)] is intended to provide guidance and assistance to professionals engaged in the design of cast-in-place reinforced concrete structures. The first Reinforced Concrete Design Manual (formerly titled ACI Design Handbook) was developed in accordance with the design provisions of 1963 ACI 318 Building Code by ACI Committee 340, Design Design Procedure for One Way Slab. Here are the steps for the Design Procedure for One Way Slab in steps.For those who do not know what are the des ign requirements of a slab.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.The two classifications are one-way slab and two-way slab.The basic.

EQUIVALENT FRAME METHOD. By: Noble, Danzelle Joy Dumot, Kristine Joy Equivalent Frame Method In this method, a three-dimensional building is divided into a series of two-dimensional equivalent frames by cutting the building along lines midway between columns. The resulting frames are considered separately in the longitudinal and transverse directions of the building and treated floor by floor Ly/Lx ≥ 2 one way slab spanning. Ly/Lx < 2 two way slab spanning. 13. One way slab near about 100mm to 150mm based on the deflection. two way slabs is in the range of 100mm to 200mm depending upon. 14. one way slab economical near about 3.5 m. Two way slab may economical for the panel sizes near about 6m x 6m Shear Connection Design Slab Design (version 1) Soil Arching - Braced Excavation Staircase Calculations Steel Connection Design Trench design Two Way Slab Design Allowable Combined Bending Shear and Torsion Bridge Design v1.1 Design of Raft Foundation Prestressed, Post-Tensioned Concrete Section (ACI 318-08) ACI 318 -350 P-M Interaction Diagram 2. Reinforced Concrete Design II 13 Direct design method (DDM) Moments in two-way slabs can be found using a semi-empirical direct design method subject to the following Limitations: 1- There shall be at least three continuous spans in each direction. 2- Successive span lengths measured center-to-center of supports in each direction shall not diffe

Best Concrete Design EXCEL Spreadsheet - CivilEngineeringBible.com. (Download FREE!) Files > Download Best Concrete Design EXCEL Spreadsheet - CivilEngineeringBible.com (FREE!) This spreadsheet consists of many segments regarding RCC aspects as described below: Beam Design ( Flexural design, Serviceability, Shear design) Column Design. Slab Design Alternate Design Method- Design Procedure of Two-way Slabs using ACI Moment Coefficients and Approved by BNBC 2013 Scope and Limitations (BNBC) 6.5.8.2.1 The provisions of this section may be used as alternative to those of 6.5.1 through 6.5.7 for two way slabs supported on all four edges by walls, steel beams or monolithic concret direct design method of the present code, has led many engineers to continue to use the design method of the 1963 ACI Code for the special case of two-way slabs supported on four sides of each slab panel by relatively deep, stiff, edge beams. This method has been used extensively since 1963 for slabs supported at th The Coefficient Method was first included in the 1963 edition of the ACI Code as a method to design two-way slabs supported on all four sides by walls, steel beams, or deep beams. The Coefficient Method is not included in current versions of the ACI Code 318, but it can still be used for two-way slab systems with edge beams Free Structural spread sheets for beam design, slab design, column design, foundation design and many others designs can be download from this page. Two Way Slab Design to BS 8110 by Reinforced Concrete Council; One Way Slab Design to BS 8110 by Reinforced Concrete Council; Punching Shear Design to BS 8110; CATEGORIE Design of STEEL-REINFORCED ELASTOMERIC BEARINGS using METHOD A per AASHTO LRFD Bridge Design Specifications, 8th Edition (2017) Section 14.7.6. Submitted By: eng_jad. Submitted On: 22 Jul 2020. Downloads: 16. Two-Way Slab Design to BS 8110. Short Description: Submitted By: crystalinv. Submitted On: 05 Dec 2010. Downloads: 245. Rating.

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