Design of Post-tensioned Slabs Using Unbonded Tendons
Author:
Publisher:
Published: 2004
Total Pages: 82
ISBN-13:
DOWNLOAD EBOOKRead and Download eBook Full
Author:
Publisher:
Published: 2004
Total Pages: 82
ISBN-13:
DOWNLOAD EBOOKAuthor: FIB – International Federation for Structural Concrete
Publisher: FIB - International Federation for Structural Concrete
Published: 1980-05-01
Total Pages: 24
ISBN-13: 0721011748
DOWNLOAD EBOOKThese recommendations present a guide to the design of two-way spanning, post-tensioned concrete flat slabs using unbonded or bonded tendons. Recommendations purely related to the use of unbonded tendons are clearly marked. These recommendations are intended only for the design of post-tensioned flat slabs in buildings and do not include the use in bridges. Post-tensioned concrete construction can be defined as unbonded or bonded, depending on whether the tendon ducts are filled with a cement grout (in order to provide a bonded structure) or whether the tendons are suitably coated and wrapped or greased and plastic covered (unbonded). While in a number of countries, (e.g., United States and Canada) economic and construction considerations have resulted in the selection of unbonded tendons, in other countries the use of the traditional bonded tendons is favoured, (e.g., Australia). Some of the advantages claimed for the use of unbonded tendons can be summarized as follows: Extremely low friction values, tendons are fully protected against corrosion during construction, maximum possible tendon drape due to the small diameter of the tendon; this is of major importance in slender structures such as flat plates, simple and fast placement of the tendons, avoidance of grouting operations. When tendons are grouted after stressing the claimed advantages are particularly that the bond between the concrete structure and the tendons increases the ultimate strength and less reliance is placed on the long-term adequacy of the anchorage.
Author: Post-Tensioning Institute
Publisher:
Published: 1977
Total Pages: 64
ISBN-13:
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Publisher:
Published: 2004
Total Pages: 82
ISBN-13:
DOWNLOAD EBOOKAuthor: Arthur E. Andrew
Publisher: Thomas Telford Publishing
Published: 1987
Total Pages: 52
ISBN-13:
DOWNLOAD EBOOKThis title provides an assessment of pre-stressed concrete, unbonded tendons, properties of materials, losses in pre-stress, suitable types of structures, design of floor and roof slabs of buildings using unbonded tendons, design of other structures using unbonded tendons, work on site and post-tensioning systems.
Author: Post-Tensioning Institute
Publisher:
Published: 2023
Total Pages: 0
ISBN-13: 9781931085588
DOWNLOAD EBOOKAuthor: Yuan-Rong Chen
Publisher:
Published: 1981
Total Pages: 164
ISBN-13:
DOWNLOAD EBOOKAuthor: FIB – International Federation for Structural Concrete
Publisher: FIB - International Federation for Structural Concrete
Published: 1998-05-01
Total Pages: 47
ISBN-13: 1874266417
DOWNLOAD EBOOKAuthor: K. Dirk Bondy
Publisher: Lulu.com
Published: 2017-08-08
Total Pages: 452
ISBN-13: 1483446999
DOWNLOAD EBOOKThe book combines history with academic notes for use at the university level, presenting design examples from actual jobs with applications and detailing for the practicing engineer. Chapter 1 tells the history of post-tensioned concrete as only Ken Bondy can tell it. Chapters 2-8 are the notes Dirk Bondy uses to teach Design of Prestressed Concrete Structures at UCLA and Cal Poly-San Luis Obispo. Chapters 9-13 are design examples that address many of the decisions faced by practicing engineers on typical projects. Chapters 13-14 cover the art of detailing and observing the construction of post-tensioned concrete. This knowledge was obtained over many years of working on our own projects and listening and learning from the the pioneers of post-tensioned concrete. Chapter 15 covers the slab on grade industry, which represents more sales of post-tensioning tendons than all other post-tensioning applications combined. Chapter 16 discusses the challenging application of post-tensioning-external post-tensioning.
Author: ACI Committee 318
Publisher: American Concrete Institute
Published: 2008
Total Pages: 471
ISBN-13: 0870312642
DOWNLOAD EBOOKThe quality and testing of materials used in construction are covered by reference to the appropriate ASTM standard specifications. Welding of reinforcement is covered by reference to the appropriate AWS standard. Uses of the Code include adoption by reference in general building codes, and earlier editions have been widely used in this manner. The Code is written in a format that allows such reference without change to its language. Therefore, background details or suggestions for carrying out the requirements or intent of the Code portion cannot be included. The Commentary is provided for this purpose. Some of the considerations of the committee in developing the Code portion are discussed within the Commentary, with emphasis given to the explanation of new or revised provisions. Much of the research data referenced in preparing the Code is cited for the user desiring to study individual questions in greater detail. Other documents that provide suggestions for carrying out the requirements of the Code are also cited.