Accordingly, main reinforcement is required in the two directions. The simplest routine structural element for illustration of design provisions in the Code is the one-way slab. BS EN 1992–1–1 section 5. This includes Engineer … Design for full load in both directions. A civil engineer must know all the aspects regarding the flat floor system. The CONCRETE CALCULATOR™ is a simple and powerful tool which allows to analyze and design reinforced concrete beams, slabs and columns cross sections. “How to design concrete structures using Eurocode 2”, The Concrete Centre, 2010) - Figure 2: Simplified detailing rules for slabs 15.0 PRESTRESSED MEMBERS AND STRUCTURES 22 By the end of this course you will be able to do a full Reinforced concrete slab design and analysis with RAPT similar to what a professional engineer does. Design Concrete Slab on Grade Design Concrete Slab on Grade pperr043 (Civil/Environmental) (OP) 6 Nov 06 21:44. The Wire Reinforcing Institute recommends the use of the Subgrade Drag Theory for slabs up to 150 feet in length. ACI 360, "Design of Slabs-on-Grade", refers to this as a Type B slab. In this webinar, we will brief on the engineering reasons behind choosing a deck of such type, the characteristics of the deck, Wood-Armer Moment, design optimization, etc. For One Way Slab 1. Inroduction When the ratio (L/S) is less than 2.0, slab is called two-way slab, as shown in the fig. You can also enter the amount of longitudinal reinforcement (that affects the shear capacity) in the two main directions. Reinforced concrete may be the most important material available for construction. Design Spreadsheets. Advantages of Reinforced Concrete as a Structural Material. Figure 2.2 – Simplified stress block for ultimate reinforced concrete design . This structural design process has been carried out under use of BS8110 design code of practice. The ultimate force is the sum of the stress × areas of the steel and concrete: cu0.67 y uz c sc mm f f NAA γγ ⎛⎞⎛⎞ =+⎜⎟⎜⎟ ⎝⎠⎝⎠ For concrete … Analysis and design for singly and doubly reinforced flanged beam Analysis & Design of Two-way Slabs Equivalent Frame Method spSlab utilizes the Equivalent Frame Method for the analysis and design of two-way slab systems, i.e. Section 9.3: MS EN 1992-1-1: 2010) 14.0 SIMPLIFIED CURTAILMENT RULES FOR SLAB 21 (Ref. Design flexural reinforcement for column strips and middle strips both ways. Ultimate limit state design theory. Short Braced Axially Loaded Columns 2.1 Development The design of such columns is straightforward. a slab system consisting of approximately rectangular panels with the ratio of longer-to-shorter span within a panel not exceeding 2.0, per American (ACI 318) and Canadian (CSA A23.3) concrete codes. Working Stress Design. The Robot offers two possibilities for a design of RC structure members: calculation of the required (theoretical) reinforcement area needed for the RC member generation of the provided (real) reinforcement for the RC member However, It is used in one form or another for almost all structures, great or small—buildings, bridges, pavements, dams, retaining walls, tunnels, drainage and irrigation facilities, tanks, and so on. Analysis and design of a single concrete sections or multiple sections. 3. REINFORCED FLAT SLAB DESIGN EXCEL SHEET. Working Stress Design is called Alternate Design Method by NSCP (National Structural Code of the Philippines) and ACI (American Concrete Institute, ACI).. Code Reference NSCP 2010, Section 424: Alternate Design Method ACI 318M-99, Appendix A: Alternate Design Method Notation f c = allowable compressive stress of concrete f s = allowable tesnile stress of steel reinforcement Prof. Dr. Qaisar Ali CE-320 Reinforced Concrete Design-I Introduction In reinforced concrete construction, slabs are used to provide flat, useful surfaces. Design reinforced concrete flat slabs for punching shear at internal, edge and corner columns by specifying the distance from the support to the slab edge; the program automatically determines the shear perimeters. There are two acceptable methods to design concrete: the working stress method and the ultimate strength method. Bending will take place in the two directions in a dish-like form. 2. Types of flanged beam. 5. In the next chapter, after reviewing the fundamental concepts of Two-way reinforced concrete slab design, I will make a new Rapt model for a step by step design and analysis of a two-way slab. This section contains information on how to design reinforced concrete elements of a structure. I have a two storey building, and my second floor and roof loads are transmitted to column footings below my slab on grade. Flanged beam. DESIGN OF REINFORCED CONCRETE SLAB (c) Ribbed slab (d) Waffle slab Figure 3.1: Types of slab Flat slab floor is a reinforced concrete slab supported directly by concrete columns without the use of intermediary beams. Analysis and design for singly and doubly reinforced rectangular concrete beam. Lecture series on Design of Reinforced Concrete Structures by Prof. N.Dhang, Department of Civil Engineering, IIT Kharagpur. Manual for Design and Detailing of Reinforced Concrete to September 2013 the Code of Practice for Structural Use of Concrete 2013 Contents 1.0 Introduction 2.0 Some highlighted aspects in Basis of Design 3.0 Beams 4.0 Slabs 5.0 Columns 6.0 Beam-Column Joints 7.0 Walls 8.0 Corbels 9.0 Cantilevers 10.0 Transfer Structures 11.0 Footings 13.0 CRACKING RULES FOR SLAB 21 (Ref. SAFE Reinforced Concrete Design 11.5.2 Design Beam Shear Reinforcement 11-14 11.5.3 Design Beam Torsion Reinforcement 11-17 11.6 Slab Design 11-21 11.6.1 Design for Flexure 11-22 11.6.2 Check for Punching Shear 11-23 11.6.3 Design Punching Shear Reinforcement 11-25 12 Design … Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. I need help to design a slab on grade. At Slabtech we specialise in Reinforced Concrete Slabs, Raft Foundations, Civil Construction and Structural Design. Flat slab system is an important division of concrete floor system. Calculate Aspect Ratio Aspect Ratio > 2 = Longer span/Shorter span 2. One-way Slabs; Two-way Slabs; Staircases. ACI 544.4R-18 “Design Guide for Fiber-Reinforced Concrete” 5. Types and Design of Staircases; Compression Members. Civil Engineering Design (1) 10 Dr. C. Caprani 2. 6 Version 2.3 May 2008 comparatively larger than the “elastic” one prior to failure. The ultimate stress method is the one most commonly used. Proceedings of 1. result is a lightly reinforced slab designed to offset the effects of temperature and shrinkage of the concrete. For slabs spanning in both directions published tables and charts should be used to find bending moment and shear per unit width of slab. Design Of Reinforced Concrete Structures ii Two-Way Slabs 1 1. How to Design Concrete Structures to Eurocode 2 - Chapter 7: Flat slabs and Figure 1. Design of Reinforced Concrete Slabs 107 B = 1.2x 1 where x = distance of load-from support closest to load I = effective span. 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