Size: 6 MB | Format:PDF | Quality:Unspecified | Publisher: FIB - The International Federation for Structural Concrete (fédération internationale du béton) | Year: 2005 | Pages: 79 | ISBN: 9782883940734
The durability of post-tensioning tendons depends undoubtedly on the durability of the materials used, but there are design concept specifics which are also of major importance: the post-tensioning layout and layers of protection such as concrete cover and selected materials in view of the aggressivity of the environment for instance.
It is well known that sustainability principles guide the Engineer from the very beginning, at the project conception, during construction and the service life of a structure. Decisions made during conceptual and design stage have the largest influence on the durability and sustainability of post-tensioning tendons. fib Bulletin 33 addresses the specifics for prestressed concrete structures: the durability of post-tensioning tendons. It should be noted that it does not repeat topics that have been addressed in other fib bulletins and which is common for both reinforced concrete and prestressed concrete structures.
Pre-tensioning, which is used extensively in the precast industry, is not considered here, although conclusions and recommendations herein may, in many cases, also be applicable.
This recommendation was prepared by Working Party 5.4.2, Durability specifics for prestressed concrete structures, in cooperation with fib Commission 9, Reinforcing and prestressing materials and systems. A preliminary version of this recommendation served as the basic document for the second workshop on "Durability of post-tensioning tendons", held on 11-12 October 2004 in Zurich. This workshop was a follow-up to the first workshop held in Ghent in 2001. Bulletin 33 includes revisions corresponding to the agreed results of the Zurich workshop.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
Size: 8 MB | Format:PDF | Quality:Unspecified | Publisher: FIB - The International Federation for Structural Concrete (fédération internationale du béton) | Year: 2005 | Pages: 163 | ISBN: 9782883940727
The intention of fib Bulletin 32 is to present guidelines for the design of footbridges as well as bridges accommodating cyclists and bridleways (equestrian paths). The need for these guidelines comes from the fact that structural engineers designing footbridges currently have to spend considerable time and energy collecting information from numerous documents, codes and recommendations to make design decisions. There seems to be no international document dedicated solely to the design of footbridges.
These guidelines attempt to provide a concentrated source of information regarding all design issues specific to footbridges. It is meant to be a 'liberal' document in the sense that it promotes new, innovative and bold yet prudent designs by sharing the experience of the authors, summarizing specifications given in codes, and presenting a collection of examples of well-designed structures or structural details from around the world. It is not intended to be an international code that specifies limits and admissible values, thus encouraging timid, conservative designs that are repetitions of approved and tested designs. Indeed, it may be the very fact that no international code exists specifically for footbridges that encourages the wide variety of footbridge designs found today.
It should be noted that numerous guidelines, codes and books have been published on bridge design in general. Information given in those publications that is also applicable to footbridges is not repeated in Bulletin 32.
The chapters of these guidelines all follow the same pattern:
an introduction to the subject, general guidelines as well as do's and don'ts;
a summary of information found in existing international codes, recommendations, experience of the authors, and built examples with comparison and comments on this information;
examples.
Plenty of illustrations and photographs help to visualize the themes of this work. The last chapter, 'Case Studies', contains footbridges each with a short summary of main structural data and references for further reading.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
Size: 12 MB | Format:PDF | Quality:Unspecified | Publisher: FIB - The International Federation for Structural Concrete (fédération internationale du béton) | Year: 2005 | Pages: 118 | ISBN: 9782883940710
The development of prestressing technology has constituted one of the more important improvements in the fields of structural engineering and construction. Referring particularly to post-tensioning applications, it is generally recognized how it opens the possibility to improve economy, structural behavior and aesthetic aspects in concrete solutions.
In spite of the simplicity of its basic concepts and well-known advantages, the application extent of post-tensioning solutions cannot be considered harmonized in the different areas and structural applications. In fact, for various reasons, it appears that the potential offered by prestressing is far from being fully exploited, especially in building structures field. In many cases where post-tensioning would provide a visibly superior solution, it happens after all that a more conventional non-prestressed solution is often selected.
The main objective of this fib Technical Report is therefore to show the benefits of using post-tensioning for the more common practical applications in concrete buildings. The document is mainly addressed to architects, contractors and owners. It is also drafted with the goal of motivating building designers to use post-tensioning: basic design aspects related to prestressing effects and design criteria are summarized and conceptual design aspects are emphasized.
A set of practical examples is presented, showing the adopted solutions and their advantages when meeting the requirements of specific problems. The selected examples were precisely not chosen because they are outstanding structures. As a matter of fact, post-tensioning principles and technology can be used in any structure, independently of its importance, covering a wide range of building structural applications, improving the structure quality and promoting concrete as a structural material.
The advantages of using post-tensioning, concerning structural behavior, economy, detailing and constructive aspects, are illustrated by the presentation of several existing structures, most of them designed by Working Party members. General design calculations are not presented, but design results showing the improvement in structural behavior are illustrated.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
We experience elasticity everywhere in daily life: in the straightening or curling of hairs, the irreversible deformations of car bodies after a crash, or the bouncing of elastic balls in ping-pong or soccer. The theory of elasticity is essential to the recent developments of applied and fundamental science, such as the bio-mechanics of DNA filaments and other macro-molecules, and the animation of virtual characters in computer graphics and materials science. In this book, the emphasis is on the elasticity of thin bodies (plates, shells, rods) in connection with geometry. It covers such topics as the mechanics of hairs (curled and straight), the buckling instabilities of stressed plates, including folds and conical points appearing at larger stresses, the geometric rigidity of elastic shells, and the delamination of thin compressed films. It applies general methods of classical analysis, including advanced nonlinear aspects (bifurcation theory, boundary layer analysis), to derive detailed, fully explicit solutions to specific problems. These theoretical concepts are discussed in connection with experiments. The book is self-contained. Mathematical prerequisites are vector analysis and differential equations. The book can serve as a concrete introduction to nonlinear methods in analysis.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
Article/eBook Full Name: AS 3735-2001: Concrete structures retaining liquids
Author(s): AS Standards
Publish Date: 2001
Published By: AS Standards
Related Links:
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
In this fully updated guide, master plumber and long-time contractor R. Dodge Woodson explains, step by step, how to install, test, and debug in-floor heating systems--the healthy, quiet, economical, and clean heating method.
Radiant Floor Heating, Second Edition now offers details on alternative fuel sources and covers new material options and installation procedures, updated code information, and state-of-the-art piping and heating equipment. Revised illustrations featuring modern products are included in this practical resource. Get everything you need to:
1. Understand and explain the advantages of in-floor radiant heating
2. Select superior equipment--tubing, boilers, expansion tanks, pumps, and controls
3. Install embedded and dry radiant heat systems in new or existing homes
4. Incorporate hot water heating into your designs
5. Set up heating zones for variable temperatures throughout a house
6. Design a solar-powered system
7. Use alternative fuel sources
8. Provide outdoor ice removal and other amenities
9. Troubleshoot and repair system problems
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
AutoCAD® Civil 3D® civil engineeering design software is a civil design and documentation solution that supports Building Information Modeling (BIM) workflows. Using AutoCAD Civil 3D, infrastructure professionals can better understand project performance, maintain more consistent data and processes, and respond faster to change.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
AutoCAD® Map 3D software provides access to GIS and mapping data to support planning, design, and data management. Intelligent models and CAD tools help you to apply regional and discipline-specific standards. Integration of GIS data with your organization helps to improve quality, productivity, and asset management.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
![[Image: 52339818040292665710.jpg]](https://pic.civilea.com/images/52339818040292665710.jpg)
![[Image: info.png]](http://postgen.civilea.com/icon/info.png){kind=icon}
![[Image: download.png]](http://postgen.civilea.com/icon/download.png){kind=icon}
![[Image: mirror.png]](http://postgen.civilea.com/icon/mirror.png){kind=icon}
![[Image: password.png]](http://postgen.civilea.com/icon/password.png){kind=icon}
![[Image: 15300944509417664697.jpg]](https://pic.civilea.com/images/15300944509417664697.jpg)
![[Image: 69973329283812633705.jpg]](https://pic.civilea.com/images/69973329283812633705.jpg)
![[Image: 50968512823671241962.jpg]](https://pic.civilea.com/images/50968512823671241962.jpg)
![[Image: 25190952215561051790.jpg]](https://pic.civilea.com/images/25190952215561051790.jpg)
![[Image: screen.png]](http://postgen.civilea.com/icon/screen.png){kind=icon}
![[Image: 80705077899899711843.gif]](https://pic.civilea.com/images/80705077899899711843.gif)
![[Image: crack.png]](http://postgen.civilea.com/icon/crack.png){kind=icon}
![[Image: 10944643932369739251.gif]](https://pic.civilea.com/images/10944643932369739251.gif)
![[Image: 57186512593297319366.gif]](https://pic.civilea.com/images/57186512593297319366.gif)