This document provides an overview of post-tensioning, including:
- Typical applications like suspended slabs, foundations, and cantilevered structures
- The two main types are bonded and unbonded post-tensioning
- Advantages include material savings, quicker construction, and increased performance, while disadvantages include complexity and potential corrosion issues
- The construction process involves placing ducts, casting concrete, tensioning tendons, and anchoring them
- Real-life projects in Morocco and Malaysia utilized post-tensioning for large structures like malls and transit systems.
Introduction to Pre-stressed and Precast Concrete TechnologyEngr Shah Farooq
This the first lecture of prestressed and precast technology. In this lecture overview of prestressed concrete is presented in such a way, that it will be very helpful for civil engineering professionals and students new to the field of prestressed concrete technology.
this lecture covers the following topics
Definition of prestressed and precast concrete
Difference between prestressed and normal reinforced concrete
Terminologies related to prestressed like tendons, Anchorage, Pre-tensioning, post-tensioning, etc
Brief History of prestressed concrete
Development of building materials for prestressed concrete
Advantages and disadvantages of prestressed concrete
Difference between pre-tension and post-tension prestressing.
and Difference between prestressed and precast concrete.
#CivilEngineering #CivilEngineer #Prestressed #Concrete #precast
Facebook Link: https://web.facebook.com/engrshahfarooq
Author Youtube Channel link:
www.youtube.com/c/CivilEngineersite
Post-tensioning is a technique for reinforcing concrete structures. The prestressing steel cables inside the sleeves or plastic ducts are positioned in the forms before placing the concrete. As the concrete gains strength, the cables are stressed to design forces before the application of the service load and are anchored att the outer edge region of the concrete.
Introduction to Pre-stressed and Precast Concrete TechnologyEngr Shah Farooq
This the first lecture of prestressed and precast technology. In this lecture overview of prestressed concrete is presented in such a way, that it will be very helpful for civil engineering professionals and students new to the field of prestressed concrete technology.
this lecture covers the following topics
Definition of prestressed and precast concrete
Difference between prestressed and normal reinforced concrete
Terminologies related to prestressed like tendons, Anchorage, Pre-tensioning, post-tensioning, etc
Brief History of prestressed concrete
Development of building materials for prestressed concrete
Advantages and disadvantages of prestressed concrete
Difference between pre-tension and post-tension prestressing.
and Difference between prestressed and precast concrete.
#CivilEngineering #CivilEngineer #Prestressed #Concrete #precast
Facebook Link: https://web.facebook.com/engrshahfarooq
Author Youtube Channel link:
www.youtube.com/c/CivilEngineersite
Post-tensioning is a technique for reinforcing concrete structures. The prestressing steel cables inside the sleeves or plastic ducts are positioned in the forms before placing the concrete. As the concrete gains strength, the cables are stressed to design forces before the application of the service load and are anchored att the outer edge region of the concrete.
Mega Prefab is a complete service provider of structural precast and post-tensioned concrete. We are involved in all the phases of the project. We will design, manufacture, deliver and install our products. With more than 16 years experience in the business, we have optimized our structural elements to be efficient, safe and low cost.
Post-Tension Concrete - Info session for ContractorsAMSYSCO Inc.
This presentation is to help General and Concrete Contractors manage construction projects that use Post-Tensioned Concrete.
1. Intro to Post-Tension
2. Components of Post-Tension
3. Construction Team
4. Submittals
5. Pre-Installation
6. Installation Management
7. Post-Concrete Placement
8. Troubleshooting
Prestressed concrete structures and its applications By Mukesh Singh GhuraiyaMukesh Singh Ghuraiya
1. What is Prestressed??
2. Principle of Prestressed
3. Method of prestressing
4. Prestressed concrete structures
5. Advantages/application of Prestressed concrete
6. Disadvantages of Prestressed concrete
7. Comparison of RCC and Prestressed Concrete Flat Slabs
Pre-stressed concrete is a method for overcoming concrete's natural weakness in tension. It can be used to produce beams, floors or bridges with a longer span than is practical with ordinary reinforced concrete. Pre-stressing tendons (generally of high tensile steel cable or rods) are used to provide a clamping load which produces a compressive stress that balances the tensile stress that the concrete compression member would otherwise experience due to a bending load. The pre-stressing force offsets the tensile stress and eliminates the tensile strain allowing the beam to resist further higher loading or to span longer distance.
Post-tensioning is a method of reinforcing (strengthening) concrete or other materials with high-strength steel strands or bars, typically referred to as tendons. Post-tensioning applications include office and apartment buildings, parking structures, slabs-on-ground, bridges, sports stadiums, rock and soil anchors, and water-tanks.
>>>Published by Post-Tensioning Institute
Regarding basics of prestressed such as inventor, types of prestressing systems, methods of prestressing, types of grouting, types of cables used for prestressed structure and method of construction etc..
In post-tensioning systems
the ducts for the tendons (or strands) are placed along with the reinforcement before the casting of concrete. The tendons are placed in the ducts
after the casting of concrete. The duct prevents contact between concrete and the
tendons during the tension operation.
Unlike pre-tension
the tendons are pulled with the reaction acting against the hardened concrete.
if the ducts are filled with grout
then it is known as bonded post-tension.
The grout is a neat cement paste or a sand-cement mortar containing suitable admixture. The
grouting operation is discussed later in the section.
Grouting
Grouting can be defined as the filling of duct, with a material
that provides an anti corrosive alkaline environment to the
prestressing steel and alsoa strong bond between
the tendon and the surrounding grout.
The major part of grout
comprises of water and cement, with a water-to
-cement ratio of about 0.5, together with some water-reducing admixtures, expansion agent
In unbonded post-tensioning,
as the name suggests, the ducts are never grouted and
the tendon is held in tension solely by the end anchorages.
The various stages of the post-tensioning operation
are summarised as follows.
1) Casting of concrete.
2) Placement of the tendons.
3) Placement of the anchorage block and jack.
4) Applying tension to the tendons.
5) Seating of the wedges.
6) Cutting of the tendon
Prestressed concrete ,post tensioning ,pre tensioning, where normal concrete can not be used and need of more strength is required this type of concrete are used. Metal bars are replaced by the tendoms which are generally used to create tension in concrete. So because of that beam bends in upward direction and when load is applied it come in normal conditon.
Mega Prefab is a complete service provider of structural precast and post-tensioned concrete. We are involved in all the phases of the project. We will design, manufacture, deliver and install our products. With more than 16 years experience in the business, we have optimized our structural elements to be efficient, safe and low cost.
Post-Tension Concrete - Info session for ContractorsAMSYSCO Inc.
This presentation is to help General and Concrete Contractors manage construction projects that use Post-Tensioned Concrete.
1. Intro to Post-Tension
2. Components of Post-Tension
3. Construction Team
4. Submittals
5. Pre-Installation
6. Installation Management
7. Post-Concrete Placement
8. Troubleshooting
Prestressed concrete structures and its applications By Mukesh Singh GhuraiyaMukesh Singh Ghuraiya
1. What is Prestressed??
2. Principle of Prestressed
3. Method of prestressing
4. Prestressed concrete structures
5. Advantages/application of Prestressed concrete
6. Disadvantages of Prestressed concrete
7. Comparison of RCC and Prestressed Concrete Flat Slabs
Pre-stressed concrete is a method for overcoming concrete's natural weakness in tension. It can be used to produce beams, floors or bridges with a longer span than is practical with ordinary reinforced concrete. Pre-stressing tendons (generally of high tensile steel cable or rods) are used to provide a clamping load which produces a compressive stress that balances the tensile stress that the concrete compression member would otherwise experience due to a bending load. The pre-stressing force offsets the tensile stress and eliminates the tensile strain allowing the beam to resist further higher loading or to span longer distance.
Post-tensioning is a method of reinforcing (strengthening) concrete or other materials with high-strength steel strands or bars, typically referred to as tendons. Post-tensioning applications include office and apartment buildings, parking structures, slabs-on-ground, bridges, sports stadiums, rock and soil anchors, and water-tanks.
>>>Published by Post-Tensioning Institute
Regarding basics of prestressed such as inventor, types of prestressing systems, methods of prestressing, types of grouting, types of cables used for prestressed structure and method of construction etc..
In post-tensioning systems
the ducts for the tendons (or strands) are placed along with the reinforcement before the casting of concrete. The tendons are placed in the ducts
after the casting of concrete. The duct prevents contact between concrete and the
tendons during the tension operation.
Unlike pre-tension
the tendons are pulled with the reaction acting against the hardened concrete.
if the ducts are filled with grout
then it is known as bonded post-tension.
The grout is a neat cement paste or a sand-cement mortar containing suitable admixture. The
grouting operation is discussed later in the section.
Grouting
Grouting can be defined as the filling of duct, with a material
that provides an anti corrosive alkaline environment to the
prestressing steel and alsoa strong bond between
the tendon and the surrounding grout.
The major part of grout
comprises of water and cement, with a water-to
-cement ratio of about 0.5, together with some water-reducing admixtures, expansion agent
In unbonded post-tensioning,
as the name suggests, the ducts are never grouted and
the tendon is held in tension solely by the end anchorages.
The various stages of the post-tensioning operation
are summarised as follows.
1) Casting of concrete.
2) Placement of the tendons.
3) Placement of the anchorage block and jack.
4) Applying tension to the tendons.
5) Seating of the wedges.
6) Cutting of the tendon
Prestressed concrete ,post tensioning ,pre tensioning, where normal concrete can not be used and need of more strength is required this type of concrete are used. Metal bars are replaced by the tendoms which are generally used to create tension in concrete. So because of that beam bends in upward direction and when load is applied it come in normal conditon.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
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How to Add Chatter in the odoo 17 ERP ModuleCeline George
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
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Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
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This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
1. 1
CONTENTS
NO. CONTENT PAGE
1. 1.1INTRODUCTION TO POST-TENSIONED
1.2 TYPICAL APPLICATIONS OF POST TENSIONING
1.3 TYPES OF POST TENSIONING
1.3.1 BONDED POST-TENSIONING
1.3.2 UNBONDED POST-TENSIONING
2-5
2. 2.0 ADVANTAGES AND DISADVANTAGES OF POST-
TENSIONING
6
3. 3.0 MANUFACTURING PROCESS OF POST-TENSIONING 7
4. 4.0 PROBLEMS & SOLUTIONS IN POST TENSIONING
STRUCTURAL ELEMENT
8
6. 5.0 REAL LIFE PROJECT [LOCAL & OVERSEA]
5.1 Morocco Mall ,Africa
5.2 Klang Valley, Malaysia
9-11
7. 6.0 REFERENCES 12
2. 2
1.1 POST-TENSIONED
Post-tensioning is simply a method of producing prestressed concrete,masonry,and
other structural elements. The term prestressing is used to describe the process of
introducing internal forces (or stress) into a concrete ormasonryelementduring the
construction process in orderto counteractthe external loads applied when the structure
is put into use (known as service loads).These internal forces are applied by tensioning
high-strength steel, which can be done either before or after the concrete is placed.
When the steel is tensioned after concrete placement, the process is called post-
tensioning.
Post-tensioned means that the concrete is poured and then the tension is applied-butit
is still stressed before the loads are applied so it is still prestressed.Post-tensioned
concrete which is also called as “active reinforcement“, with the primary function to
place concrete structure undercompression in regions where loads causes tensile
stress. Post-tensioning applies compressive stresses on the material, balancing off
tensile stress on the concrete. The tension is applied by the use of a tensioning member
known as “tendons”.
It is a technique for reinforcing concrete. Post-tensioning tendons,which are
prestressing steel cables inside plastic ducts or sleeves,are positioned in the forms
before the concrete is placed.Afterwards, once the concrete has gained strength but
before the service loads are applied,the cables are pulled tight, or tensioned,and
anchored againstthe outer edges of the concrete.
The use of post-tensioning contributes to very demanding geometryrequirements,
including complex shapes andcurvature and variable superelevation.It allows long clear
spans and this result in aestheicaland architectural approach.Also,it would be column-
free and creates more space.In addition, it allows thinner concrete sections, stiffer walls
resisting lateral loads,and stiffer foundations.
Additionally, all construction joints and crack control joints could be eliminated because
the slab was poured monolithically (in one whole single piece)and the post-tensioning
system could provide sufficient pre-compression on the slab.
Tendo
ns
Photo Source : https://static.concretenetwork.com/photo-gallery/images/550x412Exact_0x4/site_26/concretenetwork-com_12578.jpg
3. 3
1.2 TYPICAL APPLICATIONS OF POST TENSIONING
- Suspended slabs like floor slabs and terrace slabs
- Foundation slabs (rafts)
- Slabs on grade (office buildings,multistorey car parks,warehousesetc.)
- Cantilevered structures, such as overhanging building parts.
- Facade elements oflarge area;here light post-tensioning is a simple method of
preventing cracks.
- Main beams in the form of beams,transfer girders,lattice girders or north-light roofs.
1.3 TYPES OF POST TENSIONING
There are mainly (2) types of posttensioning system, bonded orunbonded.
Bonded -The prestressing steel is installed at the site after the formwork is
erected and typically after concrete is poured.It is housed in a sheating or ductto
preventit from bonding to the surrounding concrete.After the concrete has
hardenered orcured,the prestressing steel is gripped at both ends and then
pulled and anchored to prestress the concrete.The ductwould then be filled with
cementitious grout.
3 main purposes : protecttendons againstcorrosion,permanently
“ lock-in” the tendon pre-tension ( thereby removing the long-term
reliance upon the end-anchorage systems),improve certain structural
behaviorof the final concrete structure
Unbonded -It differs by providing each individualcable permanentfreedom of
movement relative to concrete.By so, each individual tendon is coated with a
grease (generallyuse lithium-base)and covered by a plastic sheating formed in
an extrusion process.The transfer of tension to concrete is achieved by the steel
cable acting againststeel anchors embdded in the perimeter of the structural
element.
Single Strand
POST
TENSIONING
a. B o nd e d P o st -
b. Unbonded Post- Tensioning
Single Strand
Multi Strand Flat Duct
Multi Strands Round Duct
4. 4
1.3.1 Bonded Post-Tensioning
BONDED POST-TENSIONING UNBONDED POST-TENSIONING
Develops higher flexural strength Provides greater available level arm
Does notdepend on anchorage after
grouting
Simplifies pre-fabrications of tendons
Localize the effects of damages Grouting not required
Simple technique for demolishing or
providing future opening in slab
Can be constructed faster
End
Cap
Grout
Valve
Pocket
Former
Strands
Examples:
Photo Source: http://pt-structures.com/wp-content/uploads/2010/08/10-
Steps_PT_Floor_Design_US_version1.pdf
[Flat Duct] [Round Duct]
Grout Pipe
Wedges
Strands
Anchor
Head
BearingPlate
Duct
Photo Source: http://ptsindia.net/pt-system.html
5. 5
1.3.2 Unbonded Post- Tensioning
Single Strand
Floor System Reinforced with Grouted
Post-Tensioning System
Post- Tensioned MatFoundation
Using grouted Tendons
Flat Duct
KSA, Photo Source: http://pt-structures.com/wp-content/uploads/2010/08/10-
Steps_PT_Floor_Design_US_version1.pdf
Photo Source: https://lh3.googleusercontent.com/1TjXhdpEiQKGVCeuIpMKZ9DkfOqLi9QyAFQ5GdmOuG9f8CVl2dz-
tN2KughnoLUM6rRCaQ=s160
Photo Source:
https://lh3.googleusercontent.com/x9OONHF854Tjd7z1oDB9rKJbxqXncS5KQJSVXlxzyGICELIpggq
UuBH_qrSgbPgBnF7BVGw=s113
6. 6
2.0 ADVANTAGES AND DISADVANTAGES OF POST-
TENSIONING
ADVANTAGES DISADVANTAGES
MaterialSavings
- Decreased dead load reduces rebar
(60%-75%) and concrete (20%) in
columns and foundation
Accuracy
- Placementof tendon profiles has to be
accurate
Quicker Construction
- Potential pourcycle of 3-4 days
- Reducing re-shoring requirements
Corrosion
- Since there are a numberoftendons
and
Stressing
Jack
Tendon Tail
(Additional lengthwill be cutoff)
Wedges
Stressing
Anchor
Split Pocket Former with
Intermediate AnchorPocket
Former
Anchorage
Assembly
Photo Source: http://www.amsyscoinc.com/2010/09/14/diagram-of-post-tensioning-slab/
Photo Source: http://pt-structures.com/wp-content/uploads/2010/08/10-
Steps_PT_Floor_Design_US_version1.pdf
Example of a Floor System using
the Unbonded Post-tensioning
System
Fortaleza, Brazil.
MAT FOUNDATION USING
UNBONDED TENDONS
Photo Source: http://pt-structures.com/wp-content/uploads/2010/08/10-
Steps_PT_Floor_Design_US_version1.p
FloorSystem
Reinforcedwith
GroutedPost-
TensioningSystem
7. 7
wire spread inside the posttension slab,
corrosion mayoccur.Tendencyof
corrode depends on the quality of the
material
Increased Performance
- Improve seismic performance and
reduced deflection and vibration
- Improved crack control and
waterproofing
properties
Complexity ofwork
- Post tension can be made only by skilful
professionals.
Reduced Lifetime Costs
- Loweroverall maintenance and lifecycle
costs of the structure
- Reduced building heightalso results in
energysavings,
Poor workmanship leads to accidents
- Main problem ofusing post tension is
that if care is nottaken while making it,
it can lead to future mishaps.If gaps of
tendons and wiring, corrosion mayoccur
which will lead to some untoward events.
Flexible in design
- Designs made are sleek,requires lesser
space and give way to dynamic
contours.
Durability
- Lasts longer,strong substitude of the
normalconcrete
Stronger/More Efficient
- Less concrete and steel are needed for
the same structural capacity that might
form tight.
- Prevents entry of insects and reducing
possible water penetration which can
damage flooring and cause mold
problems
3.0 CONSTRUCTION PROCESS OF POST-TENSIONING SLAB
[Bonded+Unbonded]
8. 8
5. After anchoring a tendon atone end,the
tension is applied at the other end by a
jack. The tensioning of tendons and pre-
compression ofconcrete occur
simultaneously. A system of self-
equilibrating forces develops after the
stretching ofthe tendons.
BONDED POST-TENSIONING UNONDED POST-TENSIONING
Placing ofducts in the reinforcement
1. The ducts for the tendons are placed along with the reinforcement before the casting of concrete. The duct S
are used to prevent contactbetween concrete and the tendons during the tensioning operation. The tendons
are placed in the ducts after the casting ofconcrete.
Casting ofconcrete
1. Concrete is casted and must achieve proper strength before the tendons are tensioned. This is typically 75% of
the concrete's 28-day design strength, and is specified in the projectdocuments.
Grouting the duct
2. Bonded post-tensioning - If the ducts are filled with
grout. The grout is a neat cementpaste or a sand-
cementmortar containing suitable admixture.
The ductis notgrouted
4. Unbonded post-tensioning - Ducts not
grouted and tendon is held by the end
anchorages. The profile ofthe duct depends
on the supportconditions. For a simply
supported member, the ducthas a sagging
profile between the ends. For a continuous
member, the ductsags in the span and hogs
over the support.
Photo Source:https://www.vsl.net/what-post-tensioning
Jacking oftendon
5. After anchoring a tendon at one end, the tension is
applied at the other end by a jack .The tensioning of
tendons and pre-compression ofconcrete occur
simultaneously. A system pfself-equilibrating forces
develops after the stretching oftendons.
Putting on wedges and cut off tendon tail
6. After tensioning is done, they will puton the wedges to
hold the tendons whereby the extra length of tendons,
tendon tails will be cutoff using either oxyacetylene
touch , hydraulic shear, plasma cutter, or abrasive wheel.
9. 9
4.0 PROBLEMS & SOLUTIONS IN POST TENSIONING STRUCTURAL
ELEMENT
Honeycomb in Concrete
Solution: Patching with non-shrink concrete groutmix with an epoxy binder. Grout
strength should equal or exceed specified concrete strength. Do notuse grouts that
contains calcium chloride or other materials containing chloride and whenever patch
has attained proper strength, stressing process may proceed.
Splicing of Tendons
Solution: Tendons are sometimes too shortto reach an edge because of
misplacementor misfabrication. Thus, making tendon couplers are necessary, the
engineer ofrecord and the post-tensioning material supplier should be notified. The
coupler location should be determined by post-tensioning material supplier in such
that the coupler is centered in the member and nota pointof tendon curvature.
Cracking Wedges
Solution: Hairline cracks may appear in the case-hardened surface ofwedges due
to deformation ofthe wedges around the strand at the time of seating. These cracks
do notaffect the integrity of posttensioning system.
Photo Source :
https://lh3.googleusercontent.com/aotgRs0GAdyNUI9
AK5J_HVwG3r35me5yjy8-
PxBMqnOqwMWuWhM9xOthy6gXMr_h84Z2aA=s85
Photo Source :
https://lh3.googleusercontent.com/cHpL8k76
bpBOUhc3Nt3mUt508ADvWHYzNnQLG908Gr
hSZIH4e93weyMk0S1OAfusio37MSI=s90
Photo Source :
https://lh3.googleusercontent.com/A6LxuPDQ1Y0QRnAF
FYGhdPfCKb-
0jyukxWpRV5h38or6iitlyu0vF1EDIMWfp1vm0IArFg=s85
10. 10
5.0 REAL LIFE PROJECT [Overseas]
5.1Morocco Mall ,Africa
Introduction
Project The Morocco Mall
Location ofthe
project
City of Casablanca,Morocco
Cost Approximately US$253-million
Construction
company
SGTM Construction
Size of the project 165,000 m², 650m long structure
Timeline Mid of 2008 – October 2011
CHALLENGE
Large amounts of concrete were to be used in the construction, which would necessitate a large
Photo Source : https://i.ytimg.com/vi/XcS24xN6c0k/maxresdefault.jpgPhoto Source :
https://khamsat.hsoubcdn.com/images/services/755020/5385609b9e808442e509004c
9193ff2a.jpg
11. 11
number of expansion joints, and a large numbers ofprecastslabs were to be manufactured, at odds
with the tight construction timeless ofproject.
SOLUTION
Replace the reinforced concrete floor slabs and
the precast panels with posttensioned wal
Further challenges faced
Building would need to contain a large number
of expansion joints because the site is located
less than 20 m from the Atlantic Ocean and the
basementlevel is below sea level.Leaks would
therefore not only pose a major inconvenience,
but severely hamper progress.
Also, the parking garage at the base ofbuilding
contained too many supporting column which
severely reduced the number ofparking bays.
The building therefore need redesigned to
accommodate new solution.
Installation
1. Construction Site
2. Anchor Assembly
3. Stressing the
strand
The process being applied to the second floor ofthe
Morocco Mall in the earlier stages ofconstruction. (The
roofof the basementlevel)
The anchor assembly graphically depicted. During the
process, a tendon will have anchors on each end to
transmit the force into the structure. Longer tendons, as
used in the mall, also have intermediate anchors along
their length.
Tension is applied by using a hydraulic stressing jack
which bears against anchors embedded in the concrete,
pulling steel to a predetermined force or stress.
Photo Source :
https://lh3.googleusercontent.com/V2Uo7dfIloE9Dc8ZVubnUb4yD5vGDML86sRvTP5zDB
vZpgLPYcb7_KkkrByFGzqpr4AZ0w=s89
Photo Source :
https://lh3.googleusercontent.com/V2Uo7dfIloE9Dc8ZVubnUb4yD5vGDML86sRvTP5zDB
vZpgLPYcb7_KkkrByFGzqpr4AZ0w=s89
Photo Source : https://lh3.googleusercontent.com/nToIY1SVWS0OSsohns_n29V5nu4-
oDfQJx9eH72MUY8zAiEfb1B7z0xNfaFhJdgvqZlQKw=s152
12. 12
5.0 REAL LIFE PROJECT (Local)
5.2 Klang Valley, Malaysia
Introduction
PROJECT PROFILE
Construction of rail-based public transportnetwork
Light rail transit (LRT)
Monorail
KTM Komuter
KLIA Express
KLIA Transit System
Aim : Form backbone ofpublic transportfor the Greater KL/ Klang Valley region
It compromise of:
The external post tension tendons to the erected segmental boxed griders by using a
15.2 m multi-strand system
HDPE smooth round ducts – house tendons comprising of19 strands each for piers
spanning of 30.00 – 39.50M
in length
Multi strand tendons – stressed with a hydraulic jack that applies forces equivalentofup to
400 tonnes
Project Klang Valley MRTV 7
Location Kuala Lumpur, Malaysia
Developer GovernmentofMalaysia and Public Transport Commission (SPAD)
Builder Alloy MTD Construction Sdn Bhd.
Value RM 800 Million
Photo Source : https://lh3.googleusercontent.com/XKRKS2agu6gUCTJg_hqxdEoK2_rQ4BRlKup-TBI2F4b3KzzmoeknmxYnOVWdC4fApsb2JA=s148
13. 13
Total projecthas 106 piers providing structural support
-Light rail frame – spanning 3.6km in length
- 900 tonnes ofposttension strand to be installed by StrongForce
14. 14
6.0 REFERENCES
Robert Sward, a. (2017).Prescribinga Bonded Post-tensioning System. STRUCTURAL TECHNOLOGIES
VSL. Retrieved 20 October 2017,from https://www.vsl.net/article/prescribing-bonded-post- tensioning-
system
Unbonded Monostrand Post-Tensioning.(2017).STRUCTURAL TECHNOLOGIES VSL. Retrieved 20
October 2017, from https://www.vsl.net/product/unbonded-monostrand-post-tensioning
Bonded Post Tensioning - noorps.com. (2017).Noorps.com. Retrieved 20 October 2017,from
http://noorps.com/page.php?6
BBR | What is post-tensioning?.(2017).Bbrnetwork.com. Retrieved 20 October 2017, from
http://www.bbrnetwork.com/technologies/what-is-pt.html
The problem with reinforced concrete. (2017).The Conversation.Retrieved 20 October 2017,
from http://theconversation.com/the-problem-with-reinforced-concrete-56078
Alkhrdaji, T. and Thomas, J. (2017). Structural Strengthening Using External Post-Tensioning Systems. [online]
STRUCTURAL. Available at: https://www.structural.net/article/structural-strengthening-using-external-
post-tensioning-systems
Author,N. (2017). Difference Between Pre-tensioning And Post-tensioning.[online] Daily Civil. Available at:
http://www.dailycivil.com/difference-pre-tensioning-post-tensioning/
Author,N. (2017). POST TENSION SERVICES INDIA PVT. LTD.. [online] Ptsindia.net. Available at:
http://ptsindia.net/pt-system.html
Author,N. (2017). Post-Tension Basics- How Post-Tensioned Slabs Are Built - The Concrete Network.[online]
Concretenetwork.com. Available at: https://www.concretenetwork.com/post-tension/basics.html
Author,N. (2017). What is Post-Tensioning.[online] STRUCTURAL TECHNOLOGIES VSL. Available at:
https://www.vsl.net/what-post-tensioning
Author,N. (2017). What is Post-Tensioning.[online] Available at:
https://buildersshow.com/Documents/course_handouts/Post-
Tensioned%20Concrete%20in%20Residential%20Construction.pdf
Bešta, J. (2017). Post-Tensioning - Post-tensioning system | VSL. [online] En.vsl.cz. Available at:
http://en.vsl.cz/post-tensioning/
Corven, J. and Moreton, A. (2017). Post-Tensioning Tendon Installation and Grouting Manual.[online]
Available at: https://www.fhwa.dot.gov/bridge/construction/pubs/hif13026.pdf
K Sengupta,D. and Menon, D. (2017). Post-tensioning Systems and Devices. [online] Available at:
http://ebooks.bharathuniv.ac.in/gdlc3/ThirdYear/SecondSem/Civil/Prestres sed%20Concrete%20Structures
/Notes/Post%20Tensioning%20Systems%20and%20Devices.pdf
Khosa, N. (2017). Cite a Website - Cite This For Me. [online] Amsyscoinc.com. Available at:
http://www.amsyscoinc.com/2010/09/14/diagram-of-post-tensioning-slab/
O Aalami, D. (2017). 10 - Step Design of Post-Tensioned Floors. [online] Available at: http://pt-
structures.com/wp-content/uploads/2010/08/10-Steps_PT_Floor_Design_US_version1.pdf
Rogers, J. (2017). Cite a Website - Cite This For Me. [online] Concreteconstruction.net.Available at:
http://www.concreteconstruction.net/how-to/construction/post-tensioned-slabs_o
Rogowsky, D. and Marti, P. (2017). DETAILING FOR POST-TENSIONED. [online] Available at:
https://www.ethz.ch/content/dam/ethz/special-interest/baug/ibk/concrete-and-bridge-design-
dam/lehre/masterstudium/Stahlbeton/Unterlagen/Detailing_for_post-tensioning.pdf