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05/07/2013
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POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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TRAINING PROGRAMME ONDESIGN OF TRANSMISSION LINES, STRUCTURES AND FOUNDATIONS
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PSTRUCTURES AND FOUNDATIONS
CEB ENGINEERS
By
POWER TRANSMISSION LIMITED
ENGINEERING DEPARTMENT
POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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INTRODUCTION 2Ch -01
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CHAPTER - 01
INTRODUCTION
POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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INTRODUCTION B.B.SHAH
GENERALONTRANSMISSIONLINE SUJALSHAH
ELECTRICALCLEARANCE KAUSHALTHAKKAR
SAGTENSIONCALCULATION SUJALSHAH
Ch -01 TOPICS COVEREDE
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LOADINGONTOWER KAUSHALTHAKKAR
SAGTEMPLATECURVEANDTOWERSPOTTINGDATA B.B.SHAH
MEMBERFORCECALCULATION MANUALMETHOD SUJALSHAH
COMPRESSIVESTRENGTHOFMEMBERS KAUSHALTHAKKAR
TENSILESTRENGTHOFMEMBERS SUJALSHAH
JOINTDESIGN KAUSHALTHAKKAR
DESIGNEXERCISEWITHDIFFERENTREDUNDANTPATTERN SUJALSHAH
STRUCTURAL DRAWING SHOP SKETCHES AND BILL OF MATERIAL KAUSHAL THAKKARSTRUCTURALDRAWING,SHOPSKETCHES AND BILLOFMATERIAL KAUSHALTHAKKAR
PROTOASSEMBLY,TOWERTYPETESTINGANDERECTION SUJALSHAH
FOUNDATIONDESIGN SUJALSHAH
TRANSPOSITIONARRANGEMENTANDSTRINGINGCHART KAUSHALTHAKKAR
BRIEFONTOWERSPOTTINGINPLS CADD SUJALSHAH
CONDUCTORDESIGNANDBEHAVIOUR SUJALSHAH
LINEDESIGN UPGRADINGANDUPRATING B.B.SHAH
FFEDBACK /CONCLUDINGSESSION
POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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POWER TRANSMISSION & DISTRIBUTION
Power Power substationsubstation
High Voltage High Voltage Transmission LineTransmission Line
Transmission Transmission SubSub--StationStation
Power PlantPower Plant
4Ch -01
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Power PlantPower Plant
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POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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INTRODUCTION 5Ch -01
Electrical energy - most convenient & cleanest form of energy
Maximum usage in world over for development & growth of economy
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Generation, transmission and utilization is continuously increasing
The technical, environmental and economic considerations resulting inlonger transmission lines & higher and higher voltages
Transmission systems with voltages of 800 kV ac and 800 kV dc arealready in operation in some of the countries
1000 / 1100 / 1200 kV ac and 750 kV dc have also been introducedin some countries.
POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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INTRODUCTION 6Ch -01 Tower constitute a very vital component of transmission lines, as
these perform functions of supporting the power conductors andground wires at the requisite distances above ground level andmaintaining conductor spacing under all operating conditions.
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With increase in transmission voltage levels, the heights & weights oftowers increases and so has their cost.
The transmission line towers constitute about 28 to 42% cost oftransmission line.
Optimization in tower design can bring significant economy in cost.
The weight of a tower is influenced to a great extent by
9 the selection of tower configuration,9 choice of steel structural for tower members,9 type of tower,9 types of connection,9 base width etc.
POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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INTRODUCTION 7Ch -01
On the basis of experience and designing skill, a tower designer canproduce tower designs conforming to specifications & createoptimum reduction in tower weight without sacrificing stability andreliability features of the finished tower.
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Optimization in line cost considering proper stability and reliabilitydepends on
9 Its foundations,9 Type of tower,9 Development of structural arrangement of tower members9 Development of structural arrangement of tower members,9 Detailing of connections,9 Quality of steel structural,9 Proper soil investigations,9 Use of foundations according to soil conditions at sites,9 Accuracy and adequate care in tower erection,9 Proper maintenance of the erected towers.
POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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Philosophies in Design of Transmission Lines
Philosophies in Design of Transmission Lines
Earlier the design of transmission line was made as per design
Ch -01 8
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g p gphilosophy based on deterministic concept of Loadings and strengthswith specified factors of safety for the different operating conditions.
Now the design of transmission line is made as per design philosophybased on probabilistic concept of Loadings and strengths with specifiedfactors of safety for the different operating conditions.
Next slides cover the overview of the entire training curriculum in brief.
(For the purpose of easy understanding some sample values are furnished simply to illustrate the point and bear no relevance
whatsoever, except the standard to which it refers.)
05/07/2013
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POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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INRODUCTIONCh -01 9Ch-02 General on Transmission Line
( To be taken up by Mr. Sujal Shah )
Describes the types of towers, tower shapes & designation of towersand brings out the essential differences between the various types of
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Pand brings out the essential differences between the various types oftowers
Tower geometry in general the various portions of towers and detailsof the factors which determine tower height, tower width at variouslevels and the spread of cross-arms.
It also describes the various type of bracing systems, insulator stringsand gives details of their composition.and gives details of their composition.
Ch-03 Electrical Clearance( To be taken up by Mr. Kaushal Thakkar )
This chapter covers the graphical method of checking electricalclearance on tower, at mid-span between conductor and earthwire.
These are the basics of deciding tower geometry.
POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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INRODUCTIONCh -01 10Ch-04 Sag Tension Calculation
( To be taken up by Mr. Sujal Shah )
This chapter covers the philosophy of9 sag tension calculation
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P9 sag-tension calculation,9 Formulae used,
Example of sag tension calculation.
Ch-05 Loading on Tower( To be taken up by Mr. Kaushal Thakkar )
This chapter defines the various types of loads and its calculations.p yp
Methods for their estimation for climatic loading under normal conditionas well as broken wire condition.
Sample loading calculation of suspension and tension towers for9 Conductor,9 Earthwire,9OPGW.
POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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INRODUCTIONCh -01 11
Ch-06 Sag Template Curve and Tower Spotting Data( To be taken up by Mr. B. B. Shah )
This chapter describes in detail about the terms used like
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9 sag template curve,
9 ruling span,
9weight span,
9 tower spotting data.p g
These terms are explained with suitable sample
9 Sag template curve,
9 Tower spotting data including calculations.
POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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INRODUCTIONCh -01 12
Ch-07 Member Force Calculation Manual Method( To be taken up by Mr. Sujal Shah )
Method of analysis as plane truss to arrive at member forces by manual
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Calculations of member forces in
9 Leg,
9 Bracing,
9 Lower Member and Upper member of Cross arm,
9 Belt
Explained with sample calculations by assuming geometry of tower andloading (wire loads + wind on tower) applied.
05/07/2013
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POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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INRODUCTIONCh -01 13
Ch-08 Compressive Strength Of Members( To be taken up by Mr. Kaushal Thakkar )
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To calculate compressive strength depending on length & sectionalproperties of any member.
Selection of
9 Grades and sizes of steel structural for tower members,Grades and sizes of steel structural for tower members,
9 Use of high tensile steel and mild steel sections,
9 Slenderness ratio limits for members with calculated and uncalculatedstresses,
9 Permissible stresses in tower members.
POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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INRODUCTIONCh -01 14Ch-09 Tensile Strength of Members
( To be taken up by Mr. Kaushal Thakkar )
To calculate tensile strength of any member depending on material usedfor the member
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Pfor the member.
Selection of grades and sizes of steel structural for tower members, useof high tensile steel and mild steel sections.
Ch-10 Joint Design( To be taken up by Mr. Kaushal Thakkar )( To be taken up by Mr. Kaushal Thakkar )
Selection of grades and sizes of bolt for different splice / joint withintower members.
Use of high tensile & mild steel material, permissible stresses in bolts.
Types of joints and calculation of strength for the joint.
POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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INRODUCTIONCh -01 15Ch-11 Exercise with Different Redundant Patterns
( To be taken up by Mr. Sujal Shah )
Exercise for calculation of compressive strength of particular member.
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Design with different redundant patterns, which is useful to understandhow to achieve economy in tower weights keeping enough safetymargins.
Ch-12 Structural Drawing, Shop Sketch and Bill of Material( To be taken up by Mr. Kaushal Thakkar )
Structural drawing and its contents,Structural drawing and its contents,
Shop sketch and its contents & Bill of material in Detail,
CNC data generated from computer software
Standard accessories which are used on tower
Various stub setting arrangement explained with detailed drawing.
POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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INRODUCTIONCh -01 16Ch-13 Proto Assembly, Tower Type Testing and Erection
( To be taken up by Mr. Sujal Shah )
Purpose and requirement of proto assembly
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Points to check on proto assembly
Tower testing procedure and testing facilities at KPTL, India
Brief explanation about helicopter erection with Photographs and video
Ch-14 Foundation DesignCh 14 Foundation Design( To be taken up by Mr. Sujal Shah )
Types of loads acting on foundation, basic parameters of soil
Types of foundation & its shapes and designs
A sample foundation design as per BS standard
05/07/2013
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POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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INRODUCTIONCh -01 17Ch-15 Transposition Arrangement and Stringing Chart
( To be taken up by Mr. Kaushal Thakkar )
Conventional practice for transposition arrangement for horizontal &vertical configuration towers
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A new approach for transposition arrangement for S/C horizontalconfiguration towers & D/C vertical configuration towers.
Advantages and cost benefit in comparison with conventionalarrangements being adopted in industry.
This chapter also discuss about starting conditions used to developThis chapter also discuss about starting conditions used to developstringing chart.
Description of Chart for Conductor/ Earthwire and Initial / Final Tension.
POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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INRODUCTIONCh -01 18
Ch-16 Brief on Tower Spotting in PLS - CADD( To be taken up by Mr. Sujal Shah )
Installation of software generating files for cables criteria structures
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Generating xyz files, defining line alignments, adding structures.
Generating stringing files for spotting towers in PLS CADD software.
Ch-17 Conductor Design and Behavior( To be taken up by Mr. Sujal Shah )
Various types of conductors.
Comparison of AAAC & ACSR conductor.
Creep compensation for over head power line conductors.
POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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INRODUCTIONCh -01 19Ch-18 Line Design Upgrading and Uprating
( To be taken up by Mr. B. B. Shah )
How to upgrade the low voltage line with higher voltage withoutmodifying the existing tower or may be with some modification in
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Methodology for uprating the line.
Case studies for upgrading and uprating included in the chapter.
Topic:- Challenges in Transmission Line Construction( To be taken up by Mr. Sabu Mathews )( To be taken up by Mr. Sabu Mathews )
Concluding Session
Feedback from the participants on all topics covered in the trainingsessions as well as any other discussion regarding the Design ofTransmission lines, Structures and foundations.
Distribution of certificate to participates.
POWERTRANSMISSIONLIMITED,GANDHINAGAR,GUJARAT,INDIAwww.kalpatarupower.com
TrainingProgrammeonDesignofTransmissionLines,StructuresandFoundationsinSriLankafrom01to05July2013forCEBEngineers
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Ch -01 INTRODUCTION 20
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T H A N K SB. B. SHAH [email protected]
SUJAL SHAH [email protected]
KAUSHAL [email protected]