- Filename: design-of-concrete-structures.
- ISBN: 0070598541
- Release Date: 2005-01-01
- Number of pages: 776
- Author: Nilson
- Publisher: Tata McGraw-Hill Education
This introduction focuses on the fundamentals of the principles of concrete mechanics and design, encompassing elementary and more complicated concepts. It features an easy-to-follow yet thorough step-by-step design methodology.
This text primarily analyses different methods of design of concrete structures as per IS 456: 2000 (Plain and Reinforced Concrete—Indian Standard Code of Practice, 4th revision, Bureau of Indian Standards). It gives greater emphasis on the limit state method so as to illustrate the acceptable limits for the safety and serviceability requirements of structures. Besides dealing with yield line analysis for slabs, the book explains the working stress method and its use for designing reinforced concrete tension members, theory of redistribution of moments, and earthquake resistant design of structures. This well-structured book develops an effective understanding of the theory through numerous solved problems, presenting step-by-step calculations. The use of SP-16 (Design Aids for Reinforced Concrete to IS: 456–1978) has also been explained in solving the problems. KEY FEATURES : Instructional Objectives at the beginning of the chapter highlight important concepts. Summary at the end of the chapter to help student revise key points. Sixty-nine solved illustrative examples presenting step-by-step calculations. Chapter-end exercises to test student’s understanding of the concepts. Forty Tests to enable students to gauge their preparedness for actual exams. This comprehensive text is suitable for undergraduate students of civil engineering and architecture. It can also be useful to professional engineers.
17 2 STRESS FIELDS FOR SIMPLE STRUCTURES 2. 1 INTRODUCTION In this chapter the behavior and strength of simple structures made of rein forced or prestressed concrete is investigated with the aid of stress fields. In particular, the webs and flanges of beams, simple walls, brackets, bracing beams and joints of frames are investigated. By this means, the majority of design cases are already covered. In reality, all structural components are three-dimensional. Here, however, components are considered either directly as two-dimensional plate elements (i. e. the plane stress condition with no variation of stress over the thickness of the element) or they are subdivided into several plates. Since two-dimensional structural elements are statically redundant, it is pOSSible for a particular loading to be in equilibrium with many (theoretically an infinite number of) stress states. If the lower bound method of the theory of plasticity is employed, then an admissible stress field or any combination of such stress fields may be selected. In chapter 4 it is shown that this method is suitable for the design of reinforced concrete structures, and the consequence of the choice of the final structural system on the structural behavior is dealt with in detail. The first cases of the use of this method date back to Ritter  and Morsch , who already at the beginning of the century investigated the resultants of the internal stresses by means of truss models.
One of the most pressing problems facing the construction industry globally is the deterioration of major concrete infrastructure in marine and other chloride-containing environments. While recent advancements in concrete technology have made it easier to control the negative impact of deteriorating processes such as alkali-aggregate reaction, freezing and thawing and chemical attack, chloride-induced corrosion of embedded steel continues to pose the biggest threat to structure durability and performance. The second edition of Durability Design of Concrete Structures in Severe Environments focuses on enhancing the durability and service life of concrete structures. The text describes field experience and deteriorating processes of concrete structures in severe environments, and includes current data based on extensive field investigations. It presents a durability design based on calculation of corrosion probability, and outlines additional protective strategies and measures. The text also describes procedures for performance-based concrete quality control and quality assurance with documentation of achieved construction quality and compliance with specified durability. The text further covers calculation of life cycle costs and life cycle assessment, and includes some new recommended job specifications. What’s New in the Second Edition: This second edition delivers more results and experience from practical applications of the probability-based durability design and the performance-based concrete quality control. It includes recent commercial projects both for Oslo Harbor KF and Nye Tjuvholmen KS in Oslo, and contains some preliminary results from the more comprehensive research program "Underwater Infrastructure and Underwater City of the Future" at Nanyang Technological University in Singapore. The book serves as an essential guide both for the owners and the consulting and construction engineers involved in new and major concrete infrastructure design and construction.
In the authors' first book Structural Concrete: Finite Element Analysis for Limit-State Design, a method based on formal finite-element modelling of structural concrete with realistic material properties was described. In this text, a simplified method is presented which needs calculations which are no more complex calculations that those required by the current (late-1990s) codes. It involves identifying the regions of a structural member or structure through which the external load is transmitted from its point of application to the supports and then strengthening these regions as required. As most of these regions enclose the trajectories of internal compression actions, the technique has been called the Compressive Force Path Method.
Here is a comprehensive guide and reference to assist civil engineers preparing for the Structural Engineer Examination. It offers 350 pages of text and 70 design problems with complete step-by-step solutions. Topics covered: Materials for Reinforced Concrete; Limit State Principles; Flexure of Reinforced Concrete Beams; Shear and Torsion of Concrete Beams; Bond and Anchorage; Design of Reinforced Concrete Columns; Design of Reinforced Concrete Slabs and Footings; Retaining Walls; and Piled Foundations. An index is provided.
Designed primarily as a text for the undergraduate students of civil engineering, this compact and well-organized text presents all the basic topics of reinforced concrete design in a comprehensive manner. The text conforms to the limit states design method as given in the latest revision of Indian Code of Practice for Plain and Reinforced Concrete, IS: 456 (2000). This book covers the applications of design concepts and provides a wealth of state-of-the-art information on design aspects of wide variety of reinforced concrete structures. However, the emphasis is on modern design approach. The text attempts to: • Present simple, efficient and systematic procedures for evolving design of concrete structures. • Make available a large amount of field tested practical data in the appendices. • Provide time saving analysis and design aids in the form of tables and charts. • Cover a large number of worked-out practical design examples and problems in each chapter. • Emphasize on development of structural sense needed for proper detailing of steel for integrated action in various parts of the structure. Besides students, practicing engineers and architects would find this text extremely useful.
Updated to reflect changes in standards and technology, this book covers the basics of concrete design structures, before moving on to practical design examples. Organised for self-study, the book includes exercise problems and answers.
Concrete expands and then contracts because of the increase in temperature during hydration of cement and subsequent fall in temperature. In continuous structures if this movement is restrained tensile stresses will develop which can cause cracks to form. Although it is accepted that there will be cracks in reinforced concrete structures, the degree and magnitude of cracking should be controlled. In the design of liquid retaining structures it is essential to restrict the width of cracks in structures. The maximum design surface crack widths - w) in BS8007 for direct tension and flexure or restrained temperature and moisture effects are as follows: w = 0.2mm for severe or very severe exposure w = 0.1mm for critical aesthetic appearance The design calculations of both the serviceability limit state of cracking due to thermal and moisture effects and flexural can be tedious and time consuming. In the preliminary design stage, the design tables in this document will assist and 'short-cut' the design process and therefore save valuable time. Design tables to BS8007 has been divided into two parts. Part 1 provides calculations of minimum reinforcement, crack spacing, and crack widths in relation to temperature and moisture effects. It summarises the design formulae and tables A1 to A6 provide calculated reinforcements required for control of thermal and shrinkage cracking. Part 2 provides calculations of crack widths in mature concrete under structural loading. It summarises the design formulae and tables B1 to B36 tabulate the service and ultimate flexural capacity of a range of slab thickness and reinforcement arrangements under differing conditions of crack width limitation , concrete strength and cover.
This handbook will assist designers to apply Eurocode 2 by explaining the background to, and the intention of, the provisions indicating the most convenient design approaches, comparing the provisions with those in BS 8110 presenting design aids, charts and examples.