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INSTITUTE OF ENGINEERING
DEPARTMENT OF industrial ENGINEERING
Thapathali campus, Kathmandu
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CONTENTS
Sheet No. 1: Isometric Drawing 3
Sheet No. 2: Oblique Drawing 6
Sheet No.3: Perspective Projection 7
Sheet No.4: Dimensioning 9
Sheet No. 5: Limit, Fit and Tolerances 11
Sheet No. 6: Screw, Bolt, Thread, Nut, Stud 12
Sheet No.7: Riveting, Welding and Piping 15
Sheet No. 8: Dissembly Drawing 18
Sheet No.9: Assembly Drawing I 20
Sheet No.10: Assembly Drawing II 23
Sheet No. 11: Electrical and Electronics Drawing 26
Sheet No. 12: Structural and Topographical Drawing 28
Sheet No. 13 : Model Solution of Sheet No. 5 30
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1. Draw the isometric drawings from the given orthographicviews in Figure T1.1ato T1.1f.
Figure T1.1a Figure T1.1b
100
15
20
15
20
45
20
45
50
20
10
25
10 10
20
40
60
30
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Figure T1.2a Figure T1.2b
3. A cylindrical slab having 75 mm as diameter and 45 mmthickness, is surmounted by a cube of edge 38 mm. On the top of
the cube rests a square pyramid of altitude 38 mm and side of
base 25 mm. The axes of the solids are in the same straight line.
Draw the isomeric view of the combination of these solids.
4. A sphere of diameter 45 mm rests centrally over a frustumof cone of base diameter 60 mm, top diameter 40 mm and height 60
mm. Draw isometric projections of the combination of solids.
5. A cylindrical slab of 70 mm as diameter and 40 mm thicknessis surmounted by a frustum of a square pyramid of base side 45
mm, top base side 25 mm and height 50 mm. The axes of the two
solids are on a common straight line. A sphere of diameter 40mm
is centrally placed on top of the frustum. Draw the isometric
view of the solids.
6. A cube of sides 60mm is resting on the ground. A cylinder ofbase diameter 50 mm and height 60mm is kept over that. On top ofthe cylinder, a hexagonal pyramid of side of base 20 mm and
altitude 40 mm is kept. The axis of the three solids lies in the
same vertical line. Draw the isometric view.
SQ50
30
9
22
34
R20
R9
7456 18
2 HOLES 9
32
9
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1. Draw the perspective projection from the givenorthographic views in Figure T3.1ato T3.1d.
Figure T3.1a Figure T3.1b
Figure T3.1c Figure T3.1d
30
30
45
20
60
100
50
60
10
30
3012
15
10
80
50
3535
20
30
40
30
72
54
72
9
4527
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A square prism of side base 30 mm and height 50 mm rests withit base on the ground and one of the rectangular faces
inclined at 300 to the picture plane. The nearest vertical
edges touches the PP. The station point is 45 mm in front of the
PP, 60 mm above the ground an opposite to the nearest
vertical edge that touches the PP. Draw the perspective view
of the prism.
A hexagonal prism, side of base 25 mm and height 50 mm withits base on the ground plane such that one of its
rectangular faces is inclined at 300 to the picture plane and
the vertical edge nearer to PP is 15 mm behind it. The station
point is 45 mm in front of the picture plane. 70 mm above the
ground plane and lies in a central plane, which is 15 mm left
to the vertical edge nearer to the picture plane. Draw the
perspective projection of the prism.
Draw the perspective view of a cube of 25 mm edge, resting onground with one of its faces. It has one of its vertical edges in
the picture plane and all its vertical faces are equally
inclined the picture plane. The station point is 55 mm in front
of the picture plane, 40 mm above the ground and lies in the
central plane, which is 10 mm left of the center of the cube.
A model of steps has 3 steps of 15 mm tread and rise 10 mm. Thesteps measure 60 mm wide. The vertical edge of bottom steps,
which is nearer to the picture plane, is 25 mm behind PP and
the width of steps recede to the left at an angle of 300 to PP.
The station point is 100 mm in front of PP and 60 mm above the
ground plane and 30 mm to the right of the vertical edge,
which is nearest to PP. Draw the perspective view of the
model.
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1. For Figure T4.1, dimension its orthographic view by alignedsystem of dimensioning.
Figure T4.1 2. For Figure T4.2, dimension its orthographic view byunidirectional system of dimensioning.
Figure T4.2
3. Measure and dimension properly as per dimensioning rulesfor holes given in Figure T4.3 (a)to Figure T4.3(c).
4. Measure and dimension properly as per dimensioning rulesfor counter sinks and counter bores given in Figure T4.4 (a)and
Figure T4.4 (f).
20
30
45
20
10
25
20
40
100
4818
150
7248
18
22 4
2
24
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5. Dimension the chamfers shown in Figure T4.5 (a) & (b),external threads shown in Figure T4.5(c), internal threads
shown in Figure T4.5 (d).
6. Dimension the tapered features shown in Figure T4.6 (a)& (b).
Figure T4.3
Figure T4.4
(a) (b) (c)
(a) (b) (c)
(d) (e) (f)
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?Figure T4.5
Figure T4.6
1. Find (i) type of fit and (ii) tolerances of a 45 mm diametershaft rotating at a normal speed.
2. Fix the limits of tolerance and allowance for a 25 mmdiameter shaft and hole pair designated by T6/h5. Find the typeof fit and comment on the application of this type of fit.
3. Fix the limits of tolerance for a 50 mm diameter shaft andhole pair designated by H8/p7. Find the type of fit and comment
on the application of this type of fit.
4. Draw the standard symbol for the machining processes: Surface to be obtained without removal of material. Surface to be coated. Surface to be precision grinding. Surface to be obtained by fine turning.
5. Draw the roughness grade symbols for the surfaces of anobject shown in Figure T5.5.
(a) (b) (c) (d)
(a) (b)
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The plane surfaces
of the object are
produced from
shaping machine.
Holes are produced
by normal drilling
process. Top
surfaces are also
super finished and
central hole issuper finished by
lapping.
Figure T5.5
50
70
30
8
22
30
20
2 10
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1. Draw the metric thread, as shown in Figure T6.1, takingsuitable value of pitch.
Figure T6.1: Metric Thread
2. Draw a screw fastening shown in Figure T6.2 with suitablevalue of dimensions.
3. Draw a stud joint to conventional ratios for the piecesshown in Figure T6.3.
0.125 P
0.25 P
0.375H
0.625H
60
P
0.5 P
MAJORDIAM
ETER
PITCHDIAMETE
R
MINORDIAMETER
H = 0.866025 P
0.125H
H
0.25H
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Figure T6.2 Figure T6.3
4. Draw a bolted joint to conventional ratios as shown inFigure T6.4. Take d = 20 mm, m = 20 mm and n = 30 mm.
27 22
56
46
6
22 6
0
720
30
14
20
M12 M12
14
90
26
M24
90
25
40 5
27
0
74
60
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Figure T6.4: Hexagonal Bolt
5. Draw front view and top view of pieces fasten together with18 mm square bolt and nut as shown in Figure T6.5.
6. Taking suitable value of 'D' draw the eyebolt as shown in theFigure T6.6.
d1
d
c
l
l
0R
A
R2
D
H
S
n
m
h
R1
D
W K
d1 = 0.85 d
H = 0.8 d
h = 0.7 d
DW = 2.5 d
S = 0.15 d
A = 1.1 d
l0 = 2 d to 2.5 d
R = 1.5 d
R1 = d
R2 = 0.5 c
c = S to 2 S
K = 3 d
D = 2 d
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Figure T6.5: Square Head Bolt Figure T6.6: Eye Bolt
22 22 22
50
50
4 D
2 D
1.4D
2.8D
0.6D
0.8D
D
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1. Draw the plan and sectional elevation of the followingriveted joints. Take the diameter of the rivet 24 mm. Single riveted lap joint Double riveted chain lap joint Double riveted zig-zag lap joint Single riveted, single strap butt joint Single riveted, double strap butt joint Double riveted, double strap chain butt joint Double riveted, double strap zig-zag butt joint
2. Figure T7.2(a) and T7.2(b) show the isometric of a machinepart to be fabricated by the welding process. Draw its
orthographic view. Choose suitable types of weld and represent
it on the drawings through respective symbols.
Figure T7.2(a) Figure T7.2(b)
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3. Sketch the symbol of the following joints and parts of piping: 900 elbow 450 bend Reducer Tee Cross Plug Union Nipple Cap Check Valve
4. Redraw a single line and a double line drawing of the portionof a piping system as shown in Figure T7.4.
Figure T7.4
STEAM MAIN
GATE VALVE
TEE
ELBOW
BOILER
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5. Figure T7.5shows a building drawing. Sketch an isometric ofthe building and draw diagrammatic isometric showing a piping
system with overhead tank, solar water heater system, supply
for toilet, kitchen and inlet supply from underground tank and
water pump.
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Figure T7.5
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1. Make a complete set of working drawings for a V-blockClamp shown in Figure T8.1.
Figure T8.1: V-block Clamp
R5
45
51
2
1
72
14
48
21
4
21
45
4 20
18
3 DRILL
18
R3
M12 1.5
16 8
21
28
9
6
4
72
R21
R30
SCREW END
96 LONG
6
36
12
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2. Figure T8.2 shows the assembly drawing of a centeringcone. Make a detail drawing of all parts.
1 Guide St 42 3
1 Centering
Pin
C60 2
1 Centering St 42 1
35
R2
45
6
7
8
610
38
106
18
25
10
18
R3
90
2
5
13
16
1
3
2
60
6066
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Cone
Nos.
Reqd.
Name Material St. No. Weight Notes
Figure T8.2: Centering Cone
SHEET NO: 9
(ASSEMBLY DRAWING I)
1. Figure T9.1 the details of a split bearing. Draw theassembled front view with section. Take any length for the
shaft.
1
2
80
250 2040
2 16
15
70110
40
2 M12
110
15
2 12
6
70
40
4
488
48
72
606
48
BASE (C. I.)
1 OFF
CAP (C. I.)
1 OFF
BUSH (G. M.)
1 OFF
SHAFT (M. S.)
1 OFF
M12 STUD (M. S.)
2 OFF
M12 STANDRAD NUT (M. S.)
2 OFF
20
20
68
R30
28
R30
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Figure T9.1: Split Bearing
2. Figure T9.2 shows the detail drawing of a UniversalCoupling for connecting two shafts. Assemble the parts and
draw the sectional front view and the top view.
Figure T9.2: Universal Coupling
3. Figure T9.3shows the detail drawing of an antivibrationmount. Assemble the parts and draw the sectional front view
and the side view.
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Figure T9.3: Antivibration Mount
6
14
6Drill
M24
Semi
finHexBo
lt
SlottedNutM24
CotterPin548
Lg
10
10
92
46
72
25 Dril2 Holes
48
20
10
80
48
R16
14 Drill, 3 Holes
42
42
72
48 Bore
64
20
R12
12
88
View 'A'
View'
A'
Body CI
24D
48D
64D
34
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4. Figure T10.1 shows the detail drawing of a Screw jack.Assemble the parts and draw the half sectional front view
(right half) and the top view.
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Figure T10.1: Screw Jack
5. Figure T10.2 shows the detail drawing of a Stuffing Boxfor a small steam engine. Assemble the parts and draw the half
sectional front view and the top view.
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Figure T10.2: Stuffing Box
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6. Figure 10.3shows the detail drawing of an antivibrationmount. Draw front view of the assembly.
Figure T10.3: Antivibration Mount
?
Hex M24 3 (M.S.) Hex M24 3 Nut (M.S.)
30
80
60
40
18
72 48
R12
R6
Bushing (Rubber)2 Req'd
64
34 648
24
Pivot Arm, (M.S.)
10
92
80
1256
12 92 12R12
25
Base for Pivot Arm (M. S.)
30
15016 16
View X
R12
18
View X
204
240
Washer (M. S.)2 Req'd
5025
5
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SHEET NO: 11
(ELECTRICAL AND ELECTRONOCS DRAWING)
1. Complete the circuit diagram shown in Figure T1.1aand FigureT1.1busing standard symbols.
Component List
C1 10-365 pF variable
capacitor
D1 Germanium Diode
L1 Loopstick antenna coil
with center tap
T1 Output transformer:
2500 primary, 3 ? 4 secondary
Q1 NPN type RF transistor
Q2 PNP type audio
transistorFigure T11.1a
Component List
Capacitors
C1 100 pF
trimmerC2 50 pF
C3 150 pF
variable
C4 470 pF
C5, C6 1000 pF
C7, C8 0.1 F
Resistors ()
R1, R2,
R3
22 k
R4 270
Coils
L1 6 H ceramic
or air core
L2 1mH RF choke
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Figure T11.1b Semiconductors
D1 1N914 silicon
diode
D2 6V, 1 W zener
diode
O1 40673 dual gate
MOSFET
2. Draw the symbols for the following: Amplifier Transformer
Capacitor Generator
Fuse Motor
Inductor 3-Phase Wye
Resistor 3-Phase Delta
Thermocouple
3. Draw a plan view of an electrical wiring diagram (for onefloor), having two bed rooms, one kitchen and one bath room as
shown in Figure T11.3.
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Draw the part drawing for component No. 1, 3, 4, and 6 of thefollowing structure shown in Figure T12.1 with detail
dimensions.
Parts List (Steel structure frame of a table)
Component
No.
Description Quantity Remarks
8 Nut, Bolt Washer (M 12
40)
62
7 M. S. P1.10 150 150 46 M. S. P1.8 250 300 4 Gusset Plate
5 M. S. Flat 8 75 4 Compute requiredlength
4 ISA 75 75 8 4 Compute requiredlength
3 ISA 100 100 10 4
2 ISMC 250 2000 2
1 ISMC 250 4000 2
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Figure T12.1
Draw symbols of six common natural surfaces features(streams, lakes, etc) and six common development features
(roads, buildings, etc.)
?Draw a topographical map of a country state similar tothat shown in Figure T12.3.
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Figure T12.3
Figure T11.3
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1. Find (i) type of fit and (ii) tolerances of a 45 mm diametershaft rotating at a normal speed.
6.2. Fix the limits of tolerance and allowance for a 25 mm
diameter shaft and hole pair designated by T6/h5. Find the type of
fit and comment on the application of this type of fit.
6.3. Fix the limits of tolerance for a 50 mm diameter shaft and
hole pair designated by H8/p7. Find the type of fit and comment
on the application of this type of fit.
5
0.025
5
0
49.975
4
9.95
4.959
4.946
2
4.991
0.054
25
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Figure T5.4
5. Draw the roughness grade symbols for the surfaces of anobject shown in Figure T5.6.
Figure T5.6
5
0.000
5
0.039
5
0.026
5
0.051
22
70
50
30
8
2 10
20
N5
N5
N10
N5
N7
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6.6. Suggest suitable fits and their letter and tolerance
grades for the components shown in Figure T5.4.