STRUCTURE & FABRICATION TECHNOLOGY CALSS XI
COURSE OBJECTIVES After successfully completing the two years + 2 stage vocational course the student would have acquired relevant appropriate and adequate technical knowledge together with the professional skills and competencies in the field of Structure and Fabrication Technology so that he is properly equipped to take up gainful employment in this vocation.
Thus he should have acquired-
A. understanding of:
(a) the relevant basic concepts and principles in basic science subjects (Physics, Chemistry and Mathematics) so that he is able to understand the different vocational subjects.
(b) the basic concepts in engineering drawing.
(c) the concepts, principles of working, constructional details and functions of major workshop equipment and machines.
(d) cutting, threading, joining and laying of water, air and steam pipes and pipelines.
(e) machining and milling operations.
(f) gas and electric welding and brazing.
(g) painting and varnishing.
(h) preparation of estimates in respect of fabrication/ repair jobs.
B. adequate professional skills and competencies in:
(a) cutting, threading and joining of water, air and steam pipes and laying and testing of pipe lines.
(b) gas and electric are welding and brazing,
(c) machining and milling operations.
(d) fabrication of steel doors, window, grills, gates and railings of buildings.
(e) making of components by machining/milling.
(f) fabrication of wind mills, bio-gas plants, watertanks.
C. a healthy and professional attitude so that he has
(a) an analytical approach while working on a fabrication job.
(b) an open mind while working.
(c) respect for working with his own hands.
(d) respect for honesty, punctuality and truthfulness.
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Scheme of Studies: Class XI
1 2 3 4 5
S.No. Subject Periods/Week Examination Total
Theory Prac. Total Theory Prac. Marks
Marks: Hrs. Marks: Hrs.
1. Language I 7 - 7 100 3 - - 100
2. Language II or 7 - 7 100 3 - - 100
mathematics (041)
As per Academic Stream
3. General Foundation 4 1 5 80 3 20 3 100
Course
4. Vocational Elective Papers
I. Engg. Science 1 7 8 70 3 30 3 100
a. Engg. Drawing (0) (4) - (40) - - - -
b. Workshop (1) (3) - (30) - - - -
Technology
II. Simple Structure 3 5 8 60 3 40 3 100
and Mechanics
III. Fabrication 3 5 8 40 3 60 3 100
Technology I
5. Physical-& Health 2
Education
Additional (optional) Papers
I. Applied Mechanic 3 2 5 60 3 40 3 100
II. Electrical Engg. 2 3 5 60 3 40 3 100
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GENERAL FOUNDATION COURSE Class XI
(Part I & II same as given in Electrical Technology on Pap No. 11)
ELECTIVE I
ENGINEERING SCIENCE Class XI
(Same as given In Electrical Technology on Page No. 13)
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ELECTIVE II
SIMPLE STRUCTURE & MECHANICS
Class XI
3 Hours Marks: 60
Theory
1. Standard rolled steel sections: 12
Introduction to standard forms of various Rolled sections available in market as per BIS
specifications.
Introduction to Tubular Trusses and RCC prefabricated structures such as columns,
beams, slabs and pipes.
2. Simple stresses and strains: 16
Hook's law, Elastic limits, Ultimate strength, Breaking stress, factor of safety, lateral
strain, Poisson's ratio and circumferential stresses in thin tubes (No. derivation of
formulae).
3. Rending moment and shear force (Simple Treatment). 16
Introduction to types of loading concept of bending Moment and shearing force,
concept of B. M. & SF diagrams, Examples of simple types of loadings.
4. Bending stresses: 16
Concept of bending stresses, neutral axis, moment of inertia of sections, strength of
sections (only standard sections).
PRACTICAL
SIMPLE STRUCTURE & MECHANICS 3 Hours Marks: 40
1. To Draw to scale various trusses and framed structures
2. To verify the forces in different members of a jib crane
3. To verify the reactions at the supports of a simply supported beam.
4. To Determine Young's Modulus of Elasticity of a given material of a beam by deflection of beam apparatus.
5. To perform Tensile Test on a Universal Tester (5,000 Kg)
6. To perform shear test on Universal Tester (5,000 Kg)
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ELECTIVE III
FABRICATION TECHNOLOGY I
Class XI
3 Hours Marks: 40
Theory
1. Tool materials and heat treatment of steel: 10
Introduction to plain carbon tool steels and Alloyed tool steels. Applications.
Concept of critical temperatures, Heat treatment processes-Annealing, Hardening,
Tempering, normalising, Case Hardening. Types of Furnaces (Introductory), Quenching
media.
2. Metal sawing and cutting Equipment: 10
Description of metal sawing machines, Power saw blades, Description of Punching and
Shearing Machines and their applications, nibbling machine etc.
3. Mechanical working of metals: 10
Introduction to Cold working and hot working.
Introduction to spinning, drawing, stamping, nibbling, beading.
Embossing, Pressing, Punching, Rolling, Extrusion processes.
4. Metal joining processes: 10
Introduction to Riveting. Types of Rivets, Methods of Rivetting, Types of Rivetted
Joints, Introduction to soldering/ brazing. Types of Joints for welding, Shelded Metal
arc welding, Tig, Mig welding, Resistance welding process, Inert Gas are welding,
Submerged arc welding-Applications, Inspection of welded Joints, Gas cutting, welding
of cast iron by Gas welding and arc welding, welding of Aluminium, Aluminium Alloys,
stainless steel. Cost estimation of welded work.
PRACTICAL
FABRICATION TECHNOLOGY I 3 Hours Marks: 60
1. Introduction to Power saw, Power saw blades, Fixing of blade, Holding of Job, Precautions. Practice of cutting steel sections.
2. Introduction to hand operated as well as power operated Punching and Shearing Machine, name of parts, use of various punching and shearing attachments. Precautions.
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3. Practice of shearing, notching, slotting, beading and. nibbling operations on various steel sections on Punching, Shearing and Nibbling Machines.
4. Demonstration, of spinning and beading process on spinning lathe machine.
5. Spinning a bowl on a spinning lathe.
6. Preparation of simple Dies (single operation) for press work.
7. Preparing a job consisting of single rivetted lap joint.
8. Practice in spot. welding.
9. Practice in soldering and brazing. (at least 2 simple jobs each)
10. Practice in welding by Gas. welding in different positions. (at least one job in horizontal, vertical and overhead position).
11. Practice in welding by arc welding on pipes and framed structures. (at least two jobs)
12. Practice of Gas cutting, straight and curved.
13. Practice of preheating, welding and post-heating for C.I. welded parts (at least 2 jobs)
14. Visits to industrial establishments for demonstration in spot welding, Seam welding, inert Gas Arc welding and Plasma cutting and welding processes.
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ADDITIONAL SUBJECT (OPTIONAL)
I. APPLIED MECHANICS Class XI
(Same as given in Electrical Technology on Page No. 21)
II. ELECTRICAL ENGINEERING
3 Hours Class XI Marks: 60
1. Application and Advantages of Electricity: 3
Difference between A.C. and D.C., various applications of electricity, advantages of
electrical energy over other types of energy.
2. Basic Quantities of Electricity: 7
Definition of Voltage, current, power and energy with their units, name of instruments
used for measuring above quantities. Connection of the instruments in an electric circuit.
3. Electromagnetic induction: 4
Production of e.m.f., idea of transformer and its principle of working.
4. Various Types of Power Plants: 6
Elementary block diagram of thermal, hydro and nuclear stations. Brief explanation of
the principle of power generation in above power stations.
5. Elements of Transmission Line: 8
Pictorial diagram of 3-phase transmission and distribution system showing transformers,
supports, conductors, insulators and earth wire etc. Brief function of accessories of
transmission lines.
6. Distribution System: 8
Distinction between high and low voltage distribution system, Identification of 3-phase
wire, nutral wires and earth %ire on a voltage distribution system. Identification of
voltage between phases and between one phase and neutral/ Distinction between 3-phase
and I-phase supply.
7. Supply from Poles to Distribution System: 8
Arrangement of supply system from pole to the distribution board, Function of service
line, energy meter, main switch, distribution board.
8. Domestic Installation: 8
Distinction between light and fan circuit and 1-phase power circuit, sub-circuits. Various
accessories and parts of installation. Identification of wiring systems. Common safety
measures on earthing.
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9. Electric Motor: Definition and various applications of single phase and 3-phase motors. Connection and starting of 3-phase motors by star-Delta starter. Conversion of H.P. into watts and K.W.
PRACTICAL
ELECTRICAL ENGINEERING 3 Hours Marks: 40
1. Use of Megger.
2. Connection of a 3-Phase motor and starter undividing fuses and reversing of direction of rotation.
3. Charging of Battery.
4. Transformer-to measure input and output voltage and currents of a loaded transformer.
5. Trouble shooting in domestic wiring system.
6. Connection of a one-phase induction motor to supply and reversing of its direction of rotation.
7. Connection of and reading of an electric energy meter.
8. Study of a distribution Board for domestic installation.
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