Dear our forum members and staff
herein (pps) file explane shear strength of soil
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Secondary Moments of Continuous Prestressed Concrete Beams Using Closed Form Equation
ASCE Conf. Proc. doi:10.1061/41031(341)22
Venketaramani Tiruchirapalli1 and Riyadh Hindi, Ph.D., P.Eng.2
ISBN:
978-0-7844-1031-8
Abstract:
This paper provides practical engineers with an equation to calculate the secondary moments of prestressed concrete continuous beams. Normally the prestressed secondary moments are calculated by deriving it from the net moment and the primary moments. This involves extensive calculations and sometimes complex integration techniques but the proposed equation described in this paper will give the secondary moment directly. The secondary moment calculated using the equation is compared with the secondary moment calculated using various existing methods such as support displacement method, moment distribution method and stiffness method, and also using the structural analysis software STAAD. For the purpose of analysis, two span, three span and four span beams are considered. This equation can be applied to multiple span beams/girders. Finally the equation is used to show the principle of concordant profile where the secondary moments are zero at the intermediate supports.
Author: Hiroaki Suzuki (Author), Arish Dastur (Author), Sebastian Moffatt (Author), Nanae Yabuki (Author), Hinako Maruyama (Author) | Size: 21.4 MB | Format:PDF | Publisher: World Bank Publications | Year: 2010 | pages: 256 | ISBN: 1439820627
Product Description
The Eco2 Cities approach is a point of departure for cities that would like to reap the many benefits of ecological and economic sustainability. It provides an analytical and operational framework that offers strategic guidance to cities on sustainable and integrated urban development. At the same time case studies are used throughout the book to provide a matter-of-fact and ground-level perspective. The Eco2 framework is flexible and easily customized to the context of each country or city. Based on the particular circumstances and the development priorities of a city – the application of the framework can contribute to the development of a unique action plan or roadmap in each case. This action plan can be triggered through catalyst projects.
To support this framework, the book also begins to introduce some powerful and practical methods and tools that can further enable sustainable and integrated city planning and decision making. These include 1) operational and process methods that can strengthen collaborative decision making and cross-sector synergies in a city; 2) analytical methods ranging from diagnostics, simulation, design and scenario-generation; and 3) accounting and benchmarking methods which can help clarify, define and measure what it means to truly invest in sustainability and resilience.
As additional reference reading, the book also features a series of case studies from best practice cities around the world, each demonstrating a very different dimension of the Eco2 approach. It also features a series of infrastructure sector notes (on spatial development, transport, energy, water and waste management), each of which explore sector specific issues as they pertain to urban development, and the many opportunities for coordination and integration across sectors.
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The role of an airport within the air transport system used to be largely incontestable. The system is now being shaped less by the concept of social service and more by market forces. Progressive liberalisation of air transport, together with trends to privatisation and globalisation are causing the roles of airports to change, for planning to become increasingly decentralised, and for the traffic to become more volatile. Airports are increasingly in competition for markets. Yet the markets are limited, and airport expansion is made difficult by environmental pressures that push towards sustainable transport, and the need to justify investment. The book will examine these pressures in order to identify changes that are required to the airport planning process. The major issues to be discussed are: forecasting in an uncertain world; airport market share; airline network choices; political settings and their consequences; economic justification and viability; environmental impacts and their mitigation; cooperative planning; and physical planning challenges. The issues will be illuminated by case studies of representative airport systems: intercontinental gateways, metropolitan multi airport system, provincial and regional airports and developing country systems. The final section will bring together suggestions for ways in which the industry can move forward to a green and profitable future with an appropriate provision of new capacity.
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The Structural Design of Air Gas Ducts for Power Stations Industrial Boilers Applications
Size: 14.67 MB | Format:PDF | pages: 55
This document, "The Structural Design of Air and Gas Ducts for Power Stations and Industrial Boiler Applications", has been created to assist structural engineers when performing the structural analysis and design of ductwork. Air and gas ducts for fossil fuel power stations and industrial boiler applications are unique structures. Considering that ductwork structural analysis and design is not currently referenced or governed by any national code or design standards, this publication presents the structural engineer with current approaches for the structural analysis and design of air and flue-gas ductwork. Included are sections on: Material selection, behavior and performance; design loads, loading combinations and allowable stresses; thermal considerations; vibration considerations; structural arrangement and behavior; toggle duct behavior and expansion joint considerations; overall duct structural analysis and design methods; and design considerations for local elements of the structure, such as stiffeners, internal braces, connections, turning vanes, and other flow distribution devices. This document also discusses drawing and specification content, fabrication and construction techniques and considerations, duct support methods, and special considerations regarding the design of duct support structures. Finally, it talks about field maintenance examinations and inspections for the purpose of preventative maintenance or condition assessment.
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STRUCTURE is the practicing structural engineer’s source for information on materials, methods, design and analysis techniques and tools, research, building construction and innovation. STRUCTURE includes information on all construction materials (concrete, steel, wood and masonry) and all types of buildings, bridges and special/unique structures…hands-on information that readers refer to time and again.
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ISSN 1536-4283. Publications Agreement No. 40675118. Owned by the National
Council of Structural Engineers Associations and published in cooperation with CASE and SEI.
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Composite Materials presents recent developments and state-of-the-art achievements in the science and technology of composites. It identifies and discusses key and emerging issues for future progress in the multidisciplinary field of composites.
By bringing together leading experts and promising innovators from research institutions and academia, Composite Materials highlights unresolved issues and identifies opportunities for long-term research needs to provide the reader with a vision for the future in various fields of application of composite materials. A few of the many future directions highlighted in the book are increasingly multifunctional properties; complex, hybrid and nanoreinforced materials; and tailoring in multiple dimensions and directions. The wider areas covered include, but are not limited to, the following:
- biomedical engineering,
- civil engineering,
- aerospace engineering,
- automotive engineering, and
- naval engineering.
Composite Materials is designed to increase the reader’s understanding of the state of the art of composite materials in a variety of industrial sectors and to explore future needs and opportunities. It will therefore be of use to professionals working in the composites industry, research centers, and academia, who already have a graduate-level knowledge of composite materials.
Related subjects » Biomaterials - Production & Process Engineering - Special types of Materials - Surfaces, Interfaces, Thin Films, Corrosion, Coatings
TABLE OF CONTENTS
1. Future Composite Structures: From Metal Mimics to Composite Constructions.- 2. Opportunities for Polymeric-based Composite Applications: Enhanced Toughness Materials and Molded Discontinuous Short Fiber Composite Technology for Transport Aircraft Parts and Component Application.- 3. Composite Materials for Marine Applications - Key Challenges for the Future.- 4. Multifunctional Polymer-based Structures for Human Tissues Reconstruction.- 5. Textile-reinforced and Polymer-modified Mortars (TRM): A New Generation of Composite Materials for Strengthening and Seismic Retrofitting of Structures.- 6. Current and Future Applications of Polymer Composites in the Field of Tribology.- 7. Graphite Nanoplatelet Composites and Their Applications.- 8. Developments in Characterising the Structural Behaviour of Composites in Fire.
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Composite Floor System - Civil Construction Magazine
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