SECTION 1 INTRODUCTION TO POST-TENSIONED CONCRETE DEVELOPED BY THE PTI EDC-130 EDUCATION COMMITTEE
|
|
- Theresa Malone
- 6 years ago
- Views:
Transcription
1 SECTION 1 INTRODUCTION TO POST-TENSIONED CONCRETE DEVELOPED BY THE PTI EDC-130 EDUCATION COMMITTEE
2 NOTE: MOMENT DIAGRAM CONVENTION In PT design, it is preferable to draw moment diagrams to the tensile face of the concrete section. The tensile face indicates what portion of the beam requires reinforcing for strength. When moment is drawn on the tension side, the diagram matches the general drape of the tendons. The tendons change their vertical location in the beam to follow the tensile moment diagram. Strands are at the top of the beam over the support and near the bottom at mid span. For convenience, the following slides contain moment diagrams drawn on both the tensile and compressive face, denoted by (T) and (C), in the lower left hand corner. Please delete the slides to suit the presenter's convention.
3 REVIEW: FUNDAMENTALS OF PRESTRESSED CONCRETE NEW: DIFFERENCES BETWEEN PRE-TENSIONING AND POST-TENSIONING
4 REVIEW OF REINFORCED CONCRETE Critical Point for Cracking Uncracked Stages of Behavior Cracked (~Elastic) Ultimate
5 REVIEW OF REINFORCED CONCRETE Moment M n M y Large deflections due to cracking M cr Steel is not engaged until after cracking Curvature
6 REVIEW OF REINFORCED CONCRETE Reinforcement is PASSIVE Steel crosses cracks, but does not prevent them
7
8 QUESTION TO PONDER Suppose a R/C beam has too much cracking and too much deflection. How might you propose to fix it? (i.e. not replace it) Tension (bending) + Compression ( squeezing ) = Net Zero Stress Sqeezed Before Loading (Pre-compressed): Pre-Compression ( prestressing ) + Tension (bending) = Net Zero Stress
9 Prestressing: Concrete pre-compressed before loading in bending (flexural tension) HOW TO BUILD IT? 1. Pre-Tensioning: Steel tensioned before concrete is placed 2. Post-Tensioning: Steel tensioned after concrete is hardened Prestressing is ACTIVE can prevent cracks from forming
10 PRE-TENSIONING 1. Tension Strands 2. Cast Concrete Bond strands to concrete 3. Cut Strands Transfer force to concrete
11 POST-TENSIONING Section 1. Cast Concrete with Duct 2. Feed Strands through Duct 3. Tension Strands 4. Grout Duct (or other corrosion protection)
12 POST-TENSIONING Post-tensioning can take on any profile Draped configurations are much more common than straight tendons Why?
13 Force Transfer by Steel-Concrete bond PRE-TENSIONING Force Transfer at end anchor Post-Tensioning Strain Compatibility and Force Equilibrium: Steel held at length longer than it wants to be: Tension Concrete compressed shorter than it wants to be: Compression
14 Pre-Tensioned elements are often precast in a factory and shipped to the site Post-Tensioned elements can be cast and tensioned in the final location (cast-in-place). They can also be precast.
15 PRE-TENSIONING INSTALL PRESTRESSING STRANDS
16 PRE-TENSIONING TENSION STRANDS
17 PRE-TENSIONING STRANDS AFTER TENSIONING
18 PRE-TENSIONING INSTALL MILD REINFORCEMENT
19 PRE-TENSIONING INSTALL INSERTS AND ASSEMBLIES
20 PRE-TENSIONING SET FORM SIDES
21 PRE-TENSIONING PLACE CONCRETE
22 PRE-TENSIONING CURE CONCRETE WITH ACCELERATED METHODS
23 PRE-TENSIONING REMOVE GIRDER FROM CASTING BED
24 PRE-TENSIONING MOVE GIRDER TO STORAGE
25 PRE-TENSIONING TRANSPORT TO JOBSITE
26 PRE-TENSIONING GIRDERS IN FINISHED STRUCTURE
27 POST-TENSIONING Ducts for Post-Tensioning
28 POST-TENSIONING
29 POST-TENSIONING
30 POST-TENSIONING
31 POST-TENSIONING
32 POST-TENSIONING
33 POST-TENSIONING
34 POST-TENSIONING Stressing Strands: Single Strand: Monostrand Multiple Strands: Multistrand
35 HOW ARE STRANDS ANCHORED? Cast against concrete at end of beam
36 HOW ARE STRANDS ANCHORED? Concrete Anchor cast in concrete Duct Strand
37 POST-TENSIONING: Bonded System (at high point) Unbonded System Grout PT Coating (grease)
38 GROUTING POST-TENSIONED SYSTEMS Vent Vent Grout In
39 POST-TENSIONING
40 STRUCTURAL EFFECT OF PRESTRESSING True for Pre- and Post-Tensioning Pre-Stressing Applied Load Total Stress T C T C T C + = Stress Limits
41 STRUCTURAL EFFECT OF PRESTRESSING True for Pre- and Post-Tensioning Service Pre-Stressing Applied Load Total Stress T C T C T C T C + + = Transfer
42 ECCENTRIC PRESTRESSING Eccentricity in prestressing: - Desirable at midspan - Not productive, even detrimental, at end of span Strategies for pre-tensioned systems: - Draped / harped profiles Temporarily held in place before concrete is hardened - Debonding Not all strands are active at end of span Strategies for post-tensioned systems: - Install ducts in desired profile
43 COMMON CONFIGURATIONS Pre-tensioning: Draped Debonded Post-tensioning:
44 PROBLEM FOR THOUGHT Where should the prestressing be placed? Tension Moment Diagram Tension (T)
45 PROBLEM FOR THOUGHT Where should the prestressing be placed? Option 1 Tension (T) Moment Diagram Good: Efficient at midspan Easy to construct Tension Bad: Counter-productive over support
46 PROBLEM FOR THOUGHT Where should the prestressing be placed? Option 2 Tension (T) Moment Diagram Good: Efficient over support Easy to construct Tension Bad: Counter-productive at midspan
47 PROBLEM FOR THOUGHT Where should the prestressing be placed? Option 3 Tension (T) Moment Diagram Good: Efficient over support Efficient at midspan Tension Bad: Difficult to construct
48 PROBLEM FOR THOUGHT Where should the prestressing be placed? Option 4 Tension Moment Diagram No net eccentricity Tension No net eccentricity Requires post-tensioning; very difficult to achieve by pretensioning (T)
49 SUMMARY: PRESTRESSED CONCRETE Efficient use of materials concrete maintained in compression, crack control Smaller deflections/thinner members Longer spans Corrosion resistance Less material; reduced environmental impact
The Hashemite University Department of Civil Engineering. Dr. Hazim Dwairi. Dr. Hazim Dwairi 1
Department of Civil Engineering Lecture 2.1 Methods of Prestressing Advantages of Prestressing Section remains uncracked under service loads Reduction of steel corrosion (increase durability) Full section
More informationPRESTRESSED CONCRETE STRUCTURES UNIT I INTRODUCTION THEORY AND BEHAVIOUR
BASIC CONCEPTS: PRESTRESSED CONCRETE STRUCTURES UNIT I INTRODUCTION THEORY AND BEHAVIOUR A prestressed concrete structure is different from a conventional reinforced concrete structure due to the application
More informationOXFORD ENGINEERING COLLEGE (NAAC Accredited with B Grade) Department of Civil Engineering LIST OF QUESTIONS
OXFORD ENGINEERING COLLEGE (NAAC Accredited with B Grade) Department of Civil Engineering LIST OF QUESTIONS Year/ Sem. : IV / VII Staff Name : S.LUMINA JUDITH Subject Code : CE 6702 Sub. Name : PRE STRESSED
More informationASSIGNMENT 1 ANALYSIS OF PRESTRESS AND BENDING STRESS BFS 40303
Instruction : Answer all question ASSIGNMENT 1 ANALYSIS OF PRESTRESS AND BENDING STRESS BFS 40303 1. A rectangular concrete beam, 100 mm wide by 250 mm deep, spanning over 8 m is prestressed by a straight
More informationPRESTRESSED CONCRETE STRUCTURES. Amlan K. Sengupta, PhD PE Department of Civil Engineering Indian Institute of Technology Madras
PRESTRESSED CONCRETE STRUCTURES Amlan K. Sengupta, PhD PE Department of Civil Engineering Indian Institute of Technology Madras Module 5: Analysis and Design for Shear and Torsion Lecture-23: Analysis
More informationExtending the Lifespan of Structural Concrete
Extending the Lifespan of Structural Concrete Jeff West, Ph.D., P.E. Dept. of Civil and Environmental Engineering Two focus areas: Extending the Lifespan of Structural Concrete Strengthening of existing
More informationCHAPTER 11: PRESTRESSED CONCRETE
CHAPTER 11: PRESTRESSED CONCRETE 11.1 GENERAL (1) This chapter gives general guidelines required for the design of prestressed concrete structures or members with CFRM tendons or CFRM tendons in conjunction
More information1 Prepared By:Mr.A.Sathiyamoorthy, M.E., AP/Civil
UNIVERSITY QUESTIONS PART A UNIT 1: INTRODUCTION THEORY AND BEHAVIOUR 1. List the loss of prestress. 2. Define axial prestressing. 3. What is the need for the use of high strength concrete and tensile
More informationDesign for Shear for Prestressed Concrete Beam
Design for Shear for Prestressed Concrete Beam Introduction The behaviour of prestressed beams at failure in shear is distinctly different from their behaviour in flexure. The beam will tend to fail abruptly
More informationChapter 2 Notation and Terminology
Reorganized 318 Chapter Titles Chapter 1 General 1.1 Scope 1.2 Purpose 1.3 Interpretation 1.4 Drawings and Specifications 1.5 Testing and Inspection 1.6 Administatration and Enforcement 1.6.1 Retention
More information7.1 Transmission of Prestress (Part I)
7.1 Transmission of Prestress (Part I) This section covers the following topics. Pre-tensioned Members 7.1.1 Pre-tensioned Members The stretched tendons transfer the prestress to the concrete leading to
More informationREPAIR OF PRECAST PRE-TENSIONED GIRDERS USING EXTERNAL POST-TENSIONING ASIT N. BAXI BAXI ENGINEERING MIGUEL FORERO SUNCOAST POST-TENSION
REPAIR OF PRECAST PRE-TENSIONED GIRDERS USING EXTERNAL POST-TENSIONING ASIT N. BAXI BAXI ENGINEERING MIGUEL FORERO SUNCOAST POST-TENSION PROJECT INFORMATION Project name: Laketown Wharf Retrofit Location:
More informationST7008 PRESTRESSED CONCRETE
ST7008 PRESTRESSED CONCRETE QUESTION BANK UNIT-I PRINCIPLES OF PRESTRESSING PART-A 1. Define modular ratio. 2. What is meant by creep coefficient? 3. Is the deflection control essential? Discuss. 4. Give
More informationConcrete Design Guide
Number 7 38 TheStructuralEngineer Technical July 2015 Post-tensioned slabs Concrete Design Guide No. 7: Design of post-tensioned slabs This series is produced by The Concrete Centre to enable designers
More informationInnovative Construction Technology
Innovative Construction Technology Learning Objectives Be able to explain the innovativeness of the following construction technology / method Top Down Construction Pre-stressed concrete System Formwork
More informationTAB.3 13 Post Tensioning Terminology (PTT)
TAB.3 13 Post Tensioning Terminology (PTT) PTI Technicical Advisory Board Page 0 of 34 The following Post-Tensioning Terminology (PTT) document contains the consensus definitions for terms relating to
More informationChapter 5: Introduction To Prestressed Concrete Design
Chapter 5: Introduction To Prestressed Concrete Design Prepared by: Koh Heng Boon Faculty of Civil & Environmental Engineering 31 October 2012 5.1 Principles of Prestressed Concrete Design Prestressed
More informationADAPT PT7 TUTORIAL FOR BEAM FRAME 1
ADAPT PT7 TUTORIAL FOR BEAM FRAME 1 Technical Note Structural Concrete Software System TN189_PT7_tutorial_beam_frame 012705 1 BEAM FRAME The objective of this tutorial is to demonstrate the step-by-step
More informationPRESTRESSED CONCRETE STRUCTURES. Amlan K. Sengupta, PhD PE Department of Civil Engineering Indian Institute of Technology Madras
PRESTRESSED CONCRETE STRUCTURES Amlan K. Sengupta, PhD PE Department of Civil Engineering Indian Institute of Technology Madras Module 5: Analysis and Design for Shear and Torsion Lecture-24: Design for
More informationFundamentals of Post-Tensioned Concrete Design for Buildings
Fundamentals of Post-Tensioned Concrete Design for Buildings Part One by John P. Miller www.suncam.com Copyright 2012 John P. Miller Page 1 of 49 Overview of This Course This is Part One of a three-part
More informationLRFD Minimum Flexural Reinforcement Requirements
NCHRP 12-94 1 LRFD Minimum Flexural Reinforcement Requirements Presentation to AASHTO T 10 Committee Spokane, WA June 12, 2017 2 Project Personnel Principal Investigator: Sri Sritharan, Iowa State University
More informationPOST-TENSIONING VS. PRESTRESSING
POST-TENSIONING VS. PRESTRESSING Miroslav F. VEJVODA, MBA, P.E. Managing Director Engineering & Professional Development PURPOSE STATEMENT This seminar is intended to develop an understanding for the differences
More informationConcrete Prestressed Concrete Pretensioned Concrete Posttensioned Concrete Typical Tendon Layout
Concrete 45 1.13.0 Prestressed Concrete Concrete in which internal stresses (forces) are induced by means of prestressing steel tendons such that tensile stresses resulting from loads are counteracted
More informationSUMMARY SHEETS OF HYBRID CONNECTIONS
APPENDIX E SUMMARY SHEETS OF HYBRID CONNECTIONS NCHRP 12-88 Connection Evaluations Appendix E E-1 APPENDIX E SUMMARY SHEETS OF HYBRID CONNECTIONS NCHRP 12-88 Connection Evaluations Appendix E E-2 Location:
More informationPrestressing Concrete with CFRP Composites for Sustainability and Corrosion-Free Applications
Prestressing Concrete with CFRP Composites for Sustainability and Corrosion-Free Applications A. Belarbi 1, M. Reda 1, P. Poudel 1, H. Tahsiri 1, M. Dawood 1, and B. Gencturk 2 1 University of Houston,
More informationPRESTRESSED CONCRETE STRUCTURES. Amlan K. Sengupta, PhD PE Department of Civil Engineering Indian Institute of Technology Madras
PRESTRESSED CONCRETE STRUCTURES Amlan K. Sengupta, PhD PE Department of Civil Engineering Indian Institute of Technology Madras Module 01: Introduction, Prestressing Systems and Material Properties Lecture
More informationIMPLEMENTATION OF DEFLECTION WITH ALLOWANCE FOR FLEXURAL CRACKING IN ADAPT-PT
Your Partner in Structural Concrete Design TN310_PT8_cracked_deflection_3 082508 IMPLEMENTATION OF DEFLECTION WITH ALLOWANCE FOR FLEXURAL CRACKING IN ADAPT-PT This Technical Note details the implementation
More informationPOST-TENSIONING APPLICATION AND TECHNOLOGY. Moe Kyaw Aung
POST-TENSIONING APPLICATION AND TECHNOLOGY Moe Kyaw Aung Overview 1. Background 2. Basic Design Concept 3. Application and Benefits 4. Components of Post-tensioning System 5. Installation Process 6. Construction
More informationContents. Foreword 1 Introduction 1
Contents Notation x Foreword xiii 1 Introduction 1 1.1 Aims of the Manual 1 1.2 Eurocode system 1 1.3 Scope of the Manual 3 1.4 Contents of the Manual 4 1.5 Notation and terminology 4 2 General principles
More informationFlexure Design Sequence
Prestressed Concrete Beam Design Workshop Load and Resistance Factor Design Flexure Design Flexure Design Sequence Determine Effective flange width Determine maximum tensile beam stresses (without prestress)
More informationEffect of Torsion on Externally Prestressed Segmental Concrete Bridge with Shear Key
American J. of Engineering and Applied Sciences 2 (1): 4-6, 29 ISSN 1941-72 29 Science Publications Effect of Torsion on Externally Prestressed Segmental Concrete Bridge with Shear Key 1 Algorafi, M.A.,
More informationTopic Outline. Two Stage Analysis Procedure: Podium Design. Part 2: Rigid Lower Portion Philip Miller, S.E. 2/8/2018
Two Stage Analysis Procedure: Podium Design Part 2: Rigid Lower Portion Philip Miller, S.E. Topic Outline Types of Podium Construction Example Buildings PT Basics PT Analysis Modeling Tips Load Balancing
More informationSTRENGTHENING OF UNBONDED POST-TENSIONED CONCRETE SLABS USING EXTERNAL FRP COMPOSITES
STRENGTHENING OF UNBONDED POST-TENSIONED CONCRETE SLABS USING EXTERNAL FRP COMPOSITES F. El M e s k i 1 ; M. Harajli 2 1 PhD student, Dept. of Civil and Environmental Engineering, American Univ. of Beirut;
More informationPart I: Introduction. Prestressed Concrete Bridge Design Basic Principles. Praveen Chompreda, Ph. D. Recall that in Reinforced Concrete
Prestressed Concrete Bridge Design Basic Principles Emphasizing AASHTO LRFD Procedures Praveen Chompreda, Ph. D. EGCE 406 Bridge Design MAHIDOL UNIVERSITY 2010 Part I: Introduction Reinforced vs. Prestressed
More informationA.Z. Fam, S.H. Rizkalla. and. W. Saltzberg
MODEL TESTS FOR CONCRETE HIGHWAY BRIDGES IN MANITOBA FULL Y REINFORCED BY CFRP REINFORCEMENTS A.Z. Fam, S.H. Rizkalla Civil and Geological Engineering Department University of Manitoba, Winnipeg, Manitoba
More informationPRECAST PARKING GARAGES
PRECAST PARKING GARAGES MAINTENANCE & REPAIR: PART 1 Project Introduction Precast concrete parking structures are often built for their cost savings and expedited construction schedule, as compared to
More informationAXIAL AND FLEXURAL PERFORMANCE OF CONCRETE PILES PRESTRESSED WITH CFRP TENDONS
AXIAL AND FLEXURAL PERFORMANCE OF CONCRETE PILES PRESTRESSED WITH CFRP TENDONS Steven Schiebel, Graduate Research Assistant/ MS Candidate Antonio Nanni, Ph.D., PE, V&M Jones Professor of Civil Engineering
More informationLONG-TERM BEHAVIOUR COMPOSITE GIRDERS AND BEHAVIOUR UNDER SERVICE LOAD OF
2006/2 PAGES 14 27 RECEIVED 12. 3. 2006 ACCEPTED 15. 4. 2006 V. BORZOVIČ LONG-TERM BEHAVIOUR COMPOSITE GIRDERS AND BEHAVIOUR UNDER SERVICE LOAD OF ABSTRACT Viktor Borzovič, PhD. Research field: Concrete
More information5.4 Analysis for Torsion
5.4 Analysis for Torsion This section covers the following topics. Stresses in an Uncracked Beam Crack Pattern Under Pure Torsion Components of Resistance for Pure Torsion Modes of Failure Effect of Prestressing
More informationUltimate strength prediction for reinforced concrete slabs externally strengthened by fiber reinforced polymer (FRP)
Ultimate strength prediction for reinforced concrete slabs externally strengthened by fiber reinforced polymer (FRP) Abstract This paper presents the potential use of externally bonded fiber reinforced
More informationPRESTRESSED CONCRETE STRUCTURES. Amlan K. Sengupta, PhD PE Department of Civil Engineering Indian Institute of Technology Madras
PRESTRESSED CONCRETE STRUCTURES Amlan K. Sengupta, PhD PE Department of Civil Engineering Indian Institute of Technology Madras Module 7: Transmission of Prestress Lecture 30: Pre-tensioned Members Welcome
More informationGuidelines for the Design of Post-Tensioned Floors
5.2 Guidelines for the Design of Post-Tensioned Floors BY BIJAN O. AALAMI AND JENNIFER D. JURGENS his article presents a set of guidelines intended to T assist designers in routine post-tensioning design,
More information1.7 Prestressing Steel
1.7 Prestressing Steel This section covers the following topics. Forms of Prestressing Steel Types of Prestressing Steel Properties of Prestressing Steel Codal Provisions of Steel 1.7.1 Forms of Prestressing
More informationAn Overview on Tendon Layout for Prestressed Concrete Beams
P P P Assistant P Assistant P P PG P P HOD, IJISET - International Journal of Innovative Science, Engineering & Technology, Vol. 2 Issue 9, September 2015. An Overview on Tendon Layout for Prestressed
More informationBS EN :2004 EN :2004 (E)
Contents List 1. General 1.1 Scope 1.1.1 Scope of Eurocode 2 1.1.2 Scope of Part 1-1 of Eurocode 2 1.2 Normative references 1.2.1 General reference standards 1.2.2 Other reference standards 1.3 Assumptions
More informationDesign and Construction of the SH58 Ramp A Flyover Bridge over IH70. Gregg A. Reese, PE, CE, Summit Engineering Group, Inc.
Design and Construction of the SH58 Ramp A Flyover Bridge over IH70 Gregg A. Reese, PE, CE, Summit Engineering Group, Inc., Littleton, CO ABSTRACT: The SH58 Ramp A bridge in Golden, CO is the latest on
More informationUNIT IVCOMPOSITE CONSTRUCTION PART A
UNIT IVCOMPOSITE CONSTRUCTION PART A 1. What is composite section of pestressed concrete? [A/M 16] A composite section in context of prestressed concrete members refers to a section with a precast member
More informationVARIOUS TYPES OF SLABS
VARIOUS TYPES OF SLABS 1 CHOICE OF TYPE OF SLAB FLOOR The choice of type of slab for a particular floor depends on many factors. Economy of construction is obviously an important consideration, but this
More informationBRIDGE GIRDERS TECHNICAL GUIDE
ARMTEC.COM BRIDGE MATERIALS / / TECHNICAL GUIDE REGIONal SPECIFICATIONS / AB / MB / SK PRECAST CONCRETE GIRDERS AND BEAMS DESIGNED TO SUPPORT BRIDGE DECKS AND TRAFFIC LOADS Proven strength In-house engineering
More informationFundamentals of Prestressed Concrete Bridge
Fundamentals of Prestressed Concrete Bridge MAB1053 Bridge Engineering Prof. Dr. Azlan Abdul Rahman Universiti Teknologi Malaysia UTM 2006 azlanfka/utm05/mab1053 1 Introduction In prestressed concrete,
More informationRak Production Technology of Concrete Structures (2015) Concrete Reinforcement
Rak-82-2121 Production Technology of Concrete Structures (2015) Concrete Reinforcement 09.10.2015 1 Learning Outcomes To acquaint the student with concrete reinforcement 2 Reinforcement The of concrete
More informationAppendix A Proposed LRFD Specifications and Commentary
NCHRP Project 12-71 Design Specifications and Commentary for Horizontally Curved Concrete Box-Girder Highway Bridges Appendix A Proposed LRFD Specifications and Commentary A-1 A-2 4.2 DEFINITIONS (Additional)
More informationTHE FORENSIC MEDICAL CENTER
THE FORENSIC MEDICAL CENTER Image courtesy of Gaudreau, Inc. TECHNICAL REPORT #2 OCTOBER 26, 2007 KEENAN YOHE STRUCTURAL OPTION DR. MEMARI FACULTY ADVISOR EXECUTIVE SUMMARY Image courtesy of Gaudreau,
More informationFRP FOR SUSTAINABLE PRECAST CONCRETE STRUCTURES
FRP FOR SUSTAINABLE PRECAST CONCRETE STRUCTURES Sami Rizkalla North Carolina State University October 21-22, 2009 1 Underground Precast Utility Tanks 2 1993 Beddington Trail Bridge First Bulb-Tee bridge
More informationPrecast segmental design and construction in China
Tailor Made Concrete Structures Walraven & Stoelhorst (eds) 2008 Taylor & Francis Group, London, ISBN 978-0-415-47535-8 Precast segmental design and construction in China Dong, Xu, Huichi Li & Chao Liu
More informationMIDAS Civil 2016 v2.1 Release Webinar. PSC Composite Design Check / Load rating
2016 v2.1 Release Webinar PSC Composite Design Check / Load rating What is Composite Girder Module? Wizard-modeling - Steel Composite Bridge - PSC Composite Bridge Report Generation for Design & Load Rating
More informationConstruction Measurement III SBQ3314. Precast Pre stressed Concrete Works. Dr. Sarajul Fikri Mohamed
Construction Measurement III SBQ3314 Precast Pre stressed Concrete Works Dr. Sarajul Fikri Mohamed Table of Contents 1. Pre stressed concrete in bridgeworks: technological aspects 2. SMM2 measurement rules
More informationFlexural Analysis and Design of Beams. Chapter 3
Flexural Analysis and Design of Beams Chapter 3 Introduction Fundamental Assumptions Simple case of axial loading Same assumptions and ideal concept apply This chapter includes analysis and design for
More informationHyperstatic (Secondary) Actions In Prestressing and Their Computation
5.5 Hyperstatic (Secondary) Actions In Prestressing and Their Computation Bijan O Aalami 1 SYNOPSIS This Technical Note describes the definition, computation, and the significance of hyperstatic (secondary)
More informationPractical Prestress Detailing
Practical Prestress Detailing Disclaimer: "This presentation is for guidance only & is not to be taken as specific advice applicable to a particular project." This presentation will only cover bonded post-tensioning,
More informationDo It Right The First Time, Every Time And On Time. An Introduction to HERCULES LMK PT. Website:
Do It Right The First Time, Every Time And On Time An Introduction to HERCULES LMK PT Content 1.Introduction 2.Post-Tensioning System 3.Typical Stressing Procedure 4.Typical Preliminary Design 5.PT Slab
More informationSOUTH AFRICAN NATIONAL STANDARD
ISBN 978-0-626-20611-6 SOUTH AFRICAN NATIONAL STANDARD The structural use of masonry Part 2: Structural design and requirements for reinforced and prestressed masonry WARNING To be used in conjunction
More informationPractical Methods for the Analysis of Differential Strain Effects
Practical Methods for the Analysis of Differential Strain Effects Doug Jenkins, Principal, Interactive Design Services, Sydney, Australia Abstract: In the assessment of time and temperature related strain
More informationQUESTION BANK CE6702 PRESTRESSED CONCRETE STRUCTURES UNIT 3 - DEFLECTION AND DESIGN OF ANCHORAGE ZONE PART A (2 marks) 1. What are the functions of water stopper (water bar) in water tank construction?
More informationDesign of Post Tensioned Slab (Review)
Design of Post Tensioned Slab (Review) Arun S. Bhutekar, Kishor S. Mirge, Bhavna Mhaske, Mangesh J. Sarkate, Prof,N. N. Shinde Department Civil Engineering, Email: bhutekararun143@gmail.com ABSTRACT- The
More informationInnovative procedure to produce high performance pretensioned concrete girders combining high strength concrete and normal or special concrete types
High Performance Structures and Materials III 401 Innovative procedure to produce high performance pretensioned concrete girders combining high strength concrete and normal or special concrete types C.
More informationParametric Study of Continuous Concrete Beam Prestressed with External Tendon
Parametric Study of Continuous Concrete Beam Prestressed with External Tendon Assistant Professor, College of Engineering, Diyala University, Iraq ABSTRACT This paper presents the results of a parametric
More informationConcept of Prestressing
Concept of Prestressing Concept of Prestressing Prestressing the concrete is to transfer precompression (compressive stress) to the concrete How the prestressing force transmitted to concrete can be explained
More informationTechnical Notes POST-TENSIONED T- BEAMS; EFFECTIVE WIDTH; TEMPERATURE TENDONS AND UNDESIRABLE EFFECTS 1. Bijan Aalami 2
Post-Tensioning Expertise and Design October 16, 2017 TN223_effective_width_temp_tendons_1 POST-TENSIONED T- BEAMS; EFFECTIVE WIDTH; TEMPERATURE TENDONS AND UNDESIRABLE EFFECTS 1 Bijan Aalami 2 The concept
More informationPRESTRESSED CONCRETE STRUCTURES
LECTURE NOTES PRESTRESSED CONCRETE STRUCTURES ON Course code: A80150 Regulation: R13 (JNTUH) IV B. Tech II Sem PREPARED BY Dr. J.S.R. PRASAD Professor K. ANAND GOUD Assistant Professor CIVIL ENGINEERING
More informationPRESTRESSED CONCRETE STRUCTURES. Amlan K. Sengupta, PhD PE Department of Civil Engineering, Indian Institute of Technology Madras
PRESTRESSED CONCRETE STRUCTURES Amlan K. Sengupta, PhD PE Department of Civil Engineering, Indian Institute of Technology Madras Module 2: Losses in Prestress Lecture 10: Creep, Shrinkage and Relaxation
More information***************************************************************************************************************
03365 POST-TENSIONED CONCRETE *************************************************************************************************************** SPECIFIER: CSI MasterFormat 2004 number 03 38 00. ***************************************************************************************************************
More information14. Structural Concrete
14. Structural Concrete 14.1. Materials 14.2. Reinforcement 14.3. Structural Concrete Design 14.4. Prestressed Concrete Girders Section 5 of the LRFD Specifications presents unified design requirements
More informationIntroduction 17/05/2015. How prestressing force transmitted to concrete?
End Block Design Introduction How prestressing force transmitted to concrete? - Pretensioned : transmitted by an internal force system through bond between steel and concrete - Post-tensioned : through
More informationSabah Shawkat Cabinet of Structural Engineering 2017
3.1-1 Continuous beams Every building, whether it is large or small, must have a structural system capable of carrying all kinds of loads - vertical, horizontal, temperature, etc. In principle, the entire
More informationContents. 1.1 Introduction 1
Contents PREFACE 1 ANCIENT MASONRY 1 1.1 Introduction 1 1.2 History of Masonry Materials 1 1.2.1 Stone 2 1.2.2 Clay Units 2 1.2.3 Calcium Silicate Units 4 1.2.4 Concrete Masonry Units 4 1.2.5 Mortars 5
More informationThe use of 0.5 and 0.6 in. (13 and 15 mm) diameter
Benefits of using.7 in. (18 mm) diameter strands in precast, pretensioned girders: A parametric investigation Jessica Salazar, Hossein Yousefpour, Alex Katz, Roya Alirezaei Abyaneh, Hyun su Kim, David
More informationApplications of sustainable post-tensioned concrete slabs
Innov. Infrastruct. Solut. (2017) 2:42 DOI 10.1007/s41062-017-0075-6 TECHNICAL PAPER Applications of sustainable post-tensioned concrete slabs Amr A. Abdelrahman 1 Received: 4 May 2017 / Accepted: 2 June
More informationOver the years, the use of precast concrete has taken giant
Precast Concrete Bridge Deck - Design, Transportation and Erection: A Designer s Overview Debabrata Mukherjee 1, Manju Balaji 2 1 Group Engineer, Atkins 2 Engineer, Atkins 76 Over the years, the use of
More informationSHEAR BEHAVIOR OF RC DEEP BEAMS WITH SOLID CIRCULAR CROSS SECTION UNDER SIMPLY SUPPORTED CONDITION AND ANTI-SYMMETRIC MOMENT
SHEAR BEHAVIOR OF RC DEEP BEAMS WITH SOLID CIRCULAR CROSS SECTION UNDER SIMPLY SUPPORTED CONDITION AND ANTI-SYMMETRIC MOMENT Koji MATSUMOTO (Tokyo Institute of Technology) Moe YONEHANA (Kajima Corporation)
More informationSeismic performance of precast concrete segmental bridges: Summary of experimental research on segmentto-segment
Editor s quick points n Researchers recently completed a three-phase research project to investigate the seismic performance of precast concrete segmental bridges. n The research showed that segment joints
More informationADAPT PT7 TUTORIAL FOR ONE-WAY SLAB 1
Structural Concrete Software System TN187_PT7_tutorial_one_way_slab 012705 ADAPT PT7 TUTORIAL FOR ONE-WAY SLAB 1 1. ONE-WAY SLAB SUPPORTED ON BEAMS The objective of this tutorial is to demonstrate the
More informationITEM 426 PRESTRESSING Definitions. For this Item, the following definitions shall apply:
ITEM 426 PRESTRESSING 426.1. Description. This Item shall govern for the furnishing, fabricating, storing and handling of prestressing materials, for the prestressing of precast members, and for the prestressing
More informationIn-plane testing of precast concrete wall panels with grouted sleeve
In-plane testing of precast concrete wall panels with grouted sleeve P. Seifi, R.S. Henry & J.M. Ingham Department of Civil Engineering, University of Auckland, Auckland. 2017 NZSEE Conference ABSTRACT:
More information1. Cast-in-place concrete is specified in Section
SECTION 03 38 00 PART 1 - GENERAL 1.01 DESCRIPTION A. This Section describes the requirements for furnishing and installing post-tensioned slabs, jacks, jacking and anchors at Parking Structure, and record
More informationPOST TENSIONED SLABS. Imagineering the possibilities
POST TENSIONED SLABS Imagineering the possibilities imagineering... CCL post - tensioned slab solutions represent continuous development through involvement in building structures worldwide. CCL systems
More informationCOMPARISON OF PRESTRESSED CONCRETE GIRDERS, WITH DEBONDED STRANDS AND HARPED STRANDS CARMEN DÍAZ-CANEJA NIETO
COMPARISON OF PRESTRESSED CONCRETE GIRDERS, WITH DEBONDED STRANDS AND HARPED STRANDS by CARMEN DÍAZ-CANEJA NIETO Presented to the Faculty of the Graduate School of The University of Texas at Arlington
More informationFlexural Behavior of RC T- Section Beams Strengthened with Different Configurations of CFRP Laminates
Research Article International Journal of Current Engineering and Technology ISSN 2277-4106 2012 INPRESSCO. All Rights Reserved. Available at http://inpressco.com/category/ijcet Flexural Behavior of RC
More informationFRP FLEXURAL AND SHEAR REINFORCEMENTS FOR HIGHWAY BRIDGES IN MANITOBA, CANADA
:, FRP FLEXURAL AND SHEAR RENFORCEMENTS FOR HGHWAY BRDGES N MANTOBA, CANADA A.Z. FAM, A.A. ABDELRAHMAN and S.H. RZKALLA Civil and Geological Engineering Department, University of Manitoba, Winnipeg, Manitoba,
More informationHYBRID MOMENT FRAMES AND UNBONDED PT SHEAR WALLS
HYBRID MOMENT FRAMES AND UNBONDED PT SHEAR WALLS Opportunities Resulting From Recent ACI 318 Code Changes and the Work of ACI ITG s 1 and 5 Neil M. Hawkins, Professor Emeritus, University of Illinois PTI
More informationLecture 13 CONCRETE WORKS
Lecture 13 TSP-308 MPK Ferdinand Fassa CONCRETE WORKS Concrete works Concrete is a man-made (rock) construction material, which is a mixture of portland cement, water, aggregates, and in some cases, admixtures.
More informationStrengthening of hollow core precast slabs using FRP composite materials procedure, testing and rating
Strengthening of hollow core precast slabs using FRP composite materials procedure, testing and rating FLORUŢ SORIN-CODRUŢ*, NAGY-GYÖRGY TAMÁS*, STOIAN VALERIU*, DIACONU DAN* * Department of Civil Engineering
More informationIN THE APPLICATION INVENTOR(S) ABUL KALAM AZAD AND IBRAHIM YAHYA AHMED HAKEEM FOR ULTRA-HIGH PERFORMANCE CONCRETE REINFORCEMENT BARS
Attorney Docket No. 4000.4 IN THE APPLICATION OF INVENTOR(S) ABUL KALAM AZAD AND IBRAHIM YAHYA AHMED HAKEEM FOR ULTRA-HIGH PERFORMANCE CONCRETE REINFORCEMENT BARS APPLICANT: King Fahd University of Petroleum
More informationTHEORETICAL AND EXPERIMENTAL STUDY OF UNBOUNDED POST-TENSIONED CONTINUOUS SLAB DECKS CONSISTING OF HIGH STRENGTH SCC
CD02-017 THEORETICAL AND EXPERIMENTAL STUDY OF UNBOUNDED POST-TENSIONED CONTINUOUS SLAB DECKS CONSISTING OF HIGH STRENGTH SCC A.A. Maghsoudi 1, M. Torkamanzadeh 2 1 Associate. Prof., Civil Engineering.
More informationSPECIAL SPECIFICATION 4584 Segmental Concrete Bridge Unit
2004 Specifications CSJ: 0028-09-111 SPECIAL SPECIFICATION 4584 Segmental Concrete Bridge Unit 1. Description. Construct cast-in-place segmental concrete box girder superstructure according to the plans,
More informationCe 479 Reinforced Masonry Fall 2005
INTRODUCTION TO STRUCTURAL DESIGN OF REINFORCED MASONRY In the preceding lecture on structural design of masonry, we have seen examples of unreinforced masonry bearing walls. In bearing walls, when the
More informationGUIDELINES FOR EXECUTION OF ADAPT-PT 1
Structural Concrete Software System GUIDELINES FOR EXECUTION OF ADAPT-PT 1 Update: December 09, 2004 TN172 guide_to_run_pt_12 120904 The guidelines presented will assist you in the selection of design
More informationResearch on Weight Reduction of PC Composite Members Using Ultra High Strength Fiber Reinforced Cementitious Composites (UFC)
Research on Weight Reduction of PC Composite Members Using Ultra High Strength Fiber Reinforced Cementitious Composites (UFC) H. Murata 1), J. Niwa 2), and C. Sivaleepunth 3) 1) Master course 2nd year
More informationFLEXURAL AND SHEAR STRENGTHENING OF REINFORCED CONCRETE STRUCTURES WITH NEAR SURFACE MOUNTED FRP RODS
FLEXURAL AND SHEAR STRENGTHENING OF REINFORCED CONCRETE STRUCTURES WITH NEAR SURFACE MOUNTED FRP RODS ABSTRACT The use of Near Surface Mounted (NSM) Fiber Reinforced Polymer (FRP) rods is a new and promising
More informationGIRDER DESIGN FOR BUILDINGS
POST-TENSIONED TRANSFER GIRDER DESIGN FOR BUILDINGS Overload, Restraint and Construction Staging g Issues Almıla Uzel and Neb Erakovic (C) COPYRIGHT POST-TENSIONING INSTITUTE, ALL RIGHTS RESERVED Page
More information