1.
MINISTRY OF EDUCATION
(State Department of Vocational & Technical Training)
KIENI TECHNICAL AND VOCATIONAL COLLEGE
P.O BOX 316 – 10102, KIGANJO, Tel: 0791-917 471;
E-mail: kienitech2019@gmail.com; info@kienitvc.ac.ke
Website: www.kienitvc.ac.ke
SCHEME OF WORK
DEPARTMENT:building and civil engineering LEVEL:Craft Certificate NO OF TRAINEE”
TRAINER NAME :Patrick Macharia CLASS:CPL DATE OF PREPARATION:
SUBJECT: plumbing theory. TERM:2:YEAR 2 DATE OF REVISION:
Wk Hours topic Objectives Key Points Application/Activities Ref. & Aids Remarks Date
Taught
1 1&2 Reporting and registration of student
Terms date Reporting
week for
student
2 2
pipework
By the end of the lesson the learner
should be able to:
i. Sketch common joints used
in water mains.
ii. Sketch common joints used
in drainage pipes
iii. Describe common materials
used drainage pipes.
 joints used in water mains.
 Viking johnson
 Flange joint
 Screwed gland joints
 Caulked joints
 Types of joints for drainage
pipes
 Rubber’0’ ring joint.
 Solvent cement
 Caulked joints
 Materials used in drainage
systems.
 Cast iron
 Pitch fibre
 Asbestos cement
-Learners to:
-Take short notes
Assignment
 Sketch common
joints used in
drainage pipes
 Describe common
materials used
drainage pipes.
-Motivate
plumbing
practice by c.j
blower.
-handouts

2.
3,4 8
Cold
water
2
(pumps)
By the end of the lesson the learner
should be able to;
i. Describe the working
principles of common pumps
used in water supply
ii. State factors to consider
when selecting pumps
iii. Describe variuos component
associated with pumping
iv. Illustrate the layout of types
of systems used in cold water
supply for high rise buildings
v. Describe the principle of
operation of a pneumatic
vessel
vi. Decribe the operation of
various control devices
vii. Define types of pressure
viii. Calculate pressure in a given
pipe installation
ix. State effects of water
hammers in pipework
Common water supply pumps
Centrifugal
Rotary
Reciprocating/displacement
Hand pumps
Hydraulic ram.
Pumps selections factors
Delivery head
Quantity
Methods of driving pump
Power rating of the pumps
Nature of water
Suction head
Pumps component
Suction valves
Foot valves/strainer
Non-return valves
Priming devices
Float and pressure switches
High rise cold water supply systems
Unboosted systems
 Direct pumping
 Indirect pumping
 Zoned systems
Boosted system
Principles of operations of a pneumatics vessel
Air compressor
Pressure switch
Floats switch
Pressure guage
Safety valves
Sight glass.
Control devices.
Delayed actions ball valve
Electrode and floats switches
Pipeline switch.
Types of pressure.
Intensity of pressure
Atmospheric pressure
guage pressure
absolute pressure.
Calculation of pressure
Intensity of pressure
Atmospheric pressure
guage pressure
absolute pressure.
Water hammers
Definations
Effects
Learners to:
 -Take short notes
 Discussion
Assignment
i. State factors to
consider when
selecting pumps
ii. Describe the
principle of
operation of a
pneumatic vessel
handout

3.
5,6 4
Hot
water
supply
2
By the end of the lesson the learner
should be able to;
i. Describe the operation of
instantaneous water heater.
ii. Describe the storage water
heaters for a given fuel
iii. Explain the by-law
requirements regarding
storage vessels.
iv. Calculate the specific heat
capacity
v. Calculate the relative cost of
using various fuels
vi. Calculate the heat lose from
a given surface.
vii. State regulation regarding
hot water systems.
operation of instantaneous water
heater.
 Gas
 Electrical
storage water heaters for
 gas
 electricity
 solid fuels
storage vessels.
Size
 Shape
 Positioning
 Supports
 Materials
 Tamping
 Primatic cylinder.
by-law requirements regarding
storage vessels.
Heat capacity
 Specific capacity
 Latent heat
 Sensi
Heat loss calculations from pipes
 Cylinders
Hot water systems regulations
 Indirect
 Direct
 Secondary circulations
Learners to:
Take short notes
Discussion
Assignment
i. Describe the
storage water
heaters for a
given fuel
Hand outs

4.
7 4
Drainage(above
ground)
By the end of the lesson the learner
should be able to:
i. Describe a given system of
above ground drainage.
ii. State the bylaws requirement
regarding the design of a
given system
iii. Describe the types of traps in
the sanitary appliances
iv. Describe the performance
and soundness tests on above
ground drainage.
v. Determine the diameter of
stacks and vents pipes for a
given number of sanitary
appliances
vi. Explain design requirements
for muilt storey buildings
 system of above ground drainage.
 One pipe systems
 Two pipe system
 Single stack stack system.
 bylaws requirement regarding
 One pipe systems
 Two pipe system
 Single stack stack system.
 Traps
 Common traps
 Resealing traps/anti-siphon
traps
 performance and soundness tests
 diameter of stacks and vents
pipes
 discharge unit methods
 design requirements for muilt
storey buildings
 offsets
 bends
 entry to drain
 range of appliance
 lowest branch connection
 ventillations
 Learners to:
 Take short
notes
 Discuss
 -workout
examples
Assignment
Sketch the following
types of drainage
system
And state the design
requirement for each
 One pipe systems
 Two pipe system
 Single stack stack
system.
Motivate
plumbing
practice by c.j
blower.
-handouts

5.
8 4
Gas
welding
By the end of the lesson the learner
should be able to:
i. State the safety precautions to
observed while using oxy-
acetylene welding equipment
ii. Explain characteristics of
different welding frames
iii. Illustrate a suitable welding
technique for a given task.
iv. Illustrate common defects in gas
welding
v. Describe various methods of
hard-soldering.
safety precautions
 use of uquipment
 storage of equipment
 protective equipment
welding frames
 oxidising
 carburising
 neutral
 cutting flame
welding techniques
 right
 left
defects in gas welding
 undercut
 poor penetrations
 porosity
methods of hard-soldering.
 Bronze welding
 Silver soldering
 Brazing
 Filler rods
 Learners to:
 Take short
notes
 Discuss
Motivate
plumbing
practice by c.j
blower.
-handouts
9 2
END
TERM
EXAM
By the end of the topics the trainee
should be able to
i. Attempt atleast 90% of the
questions given correctively
ii. Answer atleast 70% of the
question provided
correctively
topics
all topics from introduction
 Organize sitting
arragement
 Receive test papers
and materials
 Note instructions
 Write the exam in
silence
 Hand in scripts
when time is up
 Sign the exams
sheet
 Give feed back
-Motivate
plumbing
practice by c.j
blower.
-Plumbing
sylubus
Aids.
Question paper
Answer sheet
Wall clock
Marking
scheme
Trainer:patrick macharia kivuti
Signature:..............
Date:....................
Hod:
Signature:..............................
Date:........................
Principals name:.......................
Signature:............................
Date:......................................

6.
MINISTRY OF EDUCATION
(State Department of Vocational & Technical Training)
KIENI TECHNICAL AND VOCATIONAL COLLEGE
P.O BOX 316 – 10102, KIGANJO, Tel: 0791-917 471;
E-mail: kienitech2019@gmail.com; info@kienitvc.ac.ke
Website: www.kienitvc.ac.ke
SCHEME OF WORK
DEPARTMENT:building and civil engineering LEVEL:Craft Certificate NO OF TRAINEE”
TRAINER NAME :Patrick Macharia CLASS:CPL DATE OF PREPARATION:
SUBJECT: plumbing theory. TERM:3:YEAR 2 DATE OF REVISION:
Wk Hours topic Objectives Key Points Application/Activities Ref. & Aids Remarks Date
Taught
1 1&2 Reporting and registration of student
Terms date Reporting week
for student

7.
2 2
Drainage
below
the
ground
By the end of the lesson the learner
should be able to:
i. Describe the various systems
of below ground drainage
ii. Describe the methods of
testing the drains
iii. State the regulations’
governing underground
drainage
iv. Describe the fuctions of
given traps
v. Describe the various sewage
disposal methods
vi. Determine the size of drain
pipes for a given quantity of
discharge
vii. Describe the equipment and
instruments used for setting
out drains.
viii. Book and reduce the levels
for the sewer lines.
systems of below ground
 separate systems
 partial systems
 combined systems
methods of testing the drains
 smoke test
 hyrdaulic test
 air test
 obstruction test
 alignment test
regulations’ governing
underground
 access
 support and protection
 ventilation
 gradient
 discharges
sewage disposal methods
 septic,cess pool,soak
pit,small treatment plants
drain pipes sizings
 discharge units methods.
 Probable flow methods
 Chezy’s formular
setting out drains and levelling.
instrument
 Dumpy level
 Tilting level
 Cowley level
Equipment
 Levelling staff
 Boning rod
 Sight rail
 Gradient board.
Booking and reduction
 Procedure
 Longtudinal sections
-Learners to:
-Take short notes
Assignment
i. Describe the
fuctions of given
traps
 Grease
 Petrol
interceptor
 Silt traps
-Motivate
plumbing
practice by c.j
blower.
-handouts

8.
3 4
Gas
supply
By the end of the lesson the learner
should be able to;
i. Illustrate the layout of a gas
supply for domestic building
ii. State the purpuses of a given
controls and component in a
gas installation
iii. State bye-laws requirement
regarding gas installation
Describe the procedure for testing
gas pipework
layout of a gas supply for domestic
building
 domestic systems
controls and component in a gas
installation
meters
regulators
governors
bye-laws requirement regarding
gas installation
 materials
 pipework
safety
testing gas pipework
air test
Learners to:
 -Take short notes
 Discussion
Assignment
i. State bye-laws
requirement
regarding gas
installation
ii. State the purpuses
of a given controls
and component in
a gas installation
meters
regulators
governors
Motivate
plumbing
practice by c.j
blower.
-handouts
4 4
Arc
welding
By the end of the lesson the learner
should be able to;
i. State safety precautions to be
observed,when using arc
welding equipment.
ii. Describe the arc welding
equipment
iii. State the common arc
welding joints
iv. Describe the given arc
welding defects
safety precautions to be observed,
 equipment
 storage
 clothing
arc welding equipment
 A.c equipment
 d.c equipment
 electrodes
arc welding joints
 lap
 butt
 fillet
 sympols used
welding defects
 undercut
 lack of penetration
 porosity
 overlap
 slag inclusion
Learners to:
i. -Take short
notes
ii. Discussion
Assignment
iii. Sketch the
following
equipment and
discuss the
working
principles
iv. A.c equipment
v. d.c equipment
vi. electrodes
Handout

9.
5 4
Design
estimation
and
costing
By the end of the lesson the learner
should be able to;
i. Produce a working drawing
for a given plumbing task
ii. Estimate the required
materials for a given task
iii. Estimate cost for a given
plumbing task
Produce a working drawing
 Plans
 Sections
 Isometric pipe layout
Estimation of materials
 Pipingsand fittings
 Sanitary appliances
 Builders work in correction
Estimation of cost
 Labour
 Materials
 Overheads
 Profits
 equipments
Learners to:
Take short notes
Discussion
Assignment
i. drawing a house
plan showing all
the plumbing
works showing all
the necessary cost
Hand outs
6 2
Cat
By the end of the topics the trainee
should be able to
i. Attempt atleast 90% of the
questions given correctively
ii. Answer atleast 70% of the
question provided
correctively
topics
 all topics from
introduction
 Organize sitting
arragement
 Receive test papers
and materials
 Note instructions
 Write the exam in
silence
 Hand in scripts
when time is up
 Sign the exams
sheet
 Give feed back
-Motivate
plumbing
practice by c.j
blower.
-Plumbing
sylubus
Aids.
Question paper
Answer sheet
Wall clock
Marking
scheme

10.
6,7 6
Cold
water
supply
3
By the end of the topics the trainee
should be able to:
i. Describe the given fire fighting
systems
ii. State the sources of water
supply for use in a given fire
protection systems.
iii. State the requirement of a given
figting systems.
iv. Determine the appropriate pipe
sizes for a cold water systems
using a given methods.
v. Describe the operations and
functions of a given component
in water pipelines.
vi. Describe the conditions which
causes a given type of flow in
pipes.
vii. Express the continuity
equations.
viii. Apply the quantity equations to
determine pipe flow parameters.
ix. Calculate the head lose in pipes
due to frictions.
x. Select a pump for a given
applications.
xi. Describe methods of
connections of supplies to water
mains of various diameters and
materials.
fire fighting systems
 wet riser
 dry riser
 sprinkler systems
 hose reel
 external hydrants
fire fighting systems water sources
 mains
 elevated reservoir
 automatic pump
 pressure tank
requirement for figting systems.
 Materials
 Positioning
 Sizing
 Access
Methods of sizing of cold water systems
 Loading unit methods
 Box formular methods
operations and functions of component in
water pipelines.
 Air valves
 Washouts/scour valves
 Break pressure tanks
 Sluice valves
 Water meters
Types of flow in pipes.
 Steady flow
 Turbulent flow
 Lamina flow
Continuity equations.
 Deriving of equations
 Calculations using equations.
Applications of quantity equations
 Calculations to determine
discharge velocity and area.
 Branchings
 Enlargments and reductions.
Frictions losses
 Darcy formular
Pump selections
 Head
 Power
 Capacity
 sitting
Learners to:
 Take short notes
 Discussion
 calculations
handout

11.
8 4
Hot
water
system
3
By the end of the topics the trainee
should be able to:
i. Illustrate the layout of a
given hot water system to a
large buildings.
ii. Illustrate the layout of a
steam systems
iii. Describe various component
used in steam pipe systems.
iv. Determine the amount of hot
water required for a given
populations
v. Describe the operations of a
commercial boilers.
vi. Explain the purposes of
boilers mountings
vii. Illustrate the layout of solar
water heating systems.
Hot water systems
 Centralised
 Electric
 Zoned
Steam systems component.
 Traps
 Trapping set
 Pressure reducing set
 Calorifiers
Calculations of quantities.
 Demands
 Storage
Commercial boilers
 Cast iron sections
 Shell
Boiler mounting
 Safety valves
 Thermostart
Solar heating systems
 Gravity
 Pumped
 Direct
 indirect
Learners to:
 Take short notes
 Discussion
 calculations
Handouts
Trainer:patrick macharia kivuti
Signature:..............
Date:....................
Hod:
Signature:..............................
Date:........................
Principals name:.......................
Signature:............................
Date:......................................