1. An emergency rescue plan is presented for work at a height of 21.5m inside a tank. 2. A cantilever scaffold will be erected inside using scaffold tubes fixed by clamps and fittings. A double pulley system with rope will be installed on the cantilever. 3. In an emergency, a stretcher and first aid will be available on site, and if needed the person can be brought down to the ground level using the emergency system.

1. 1
Emergency Rescue Plan for work @ Height
Step.1 Cantilever will be provided inside the tank scaffolding at a height
of 21.5m from the bottom. (Design/Load Analysis attached)
Step.2 Cantilever will be made by using scaffolding tubes
(2”x4mmx1.5m)
Of 6 no’s (Third Party certified scaffolders will do the erection)
Step.3 All the pipes will be fixed by the standard scaffolding clamps and
fittings.
Step.4 Double pulley will be installed in the cantilever beam with nylon
rope (16 mm). (Third Party certificate is available).
Step.5 In case of any emergency stretcher will be available at site
ambulance.
Step.6 During the emergency the qualified first aider/male nurse will
provide the first aid at site itself. If required the emergency arrangement
will be utilized to bring the person to ground level.

2. 2
Load Analysis on Cantilever Supports
Point load on Cantilever
+y
+x
a b
L Point Load
Span of cantilever (m) = 1.40 m 1.5 m tube
Load P (KN) =1.50 kN/m
Distance ‘a ‘(m) = 1m
Distance ‘X’ (m) = .40m
Fx Left (KN) = -1.5
Fx Right (KN) =- 1.5
Bending Moment MX (kNm) =1.5 KN = 152kg
Maximum BM acts on the fixed supports. i.e. = 152 kg
UDL on Left Part 8.86
KN
+y w
+x
a b
L

3. 3
Span of cantilever (m) =1.40 m
UDL (KN/m) = 2.04 KN
Distance ‘a ‘(m) = 1m
Distance ‘X’ (m) = .20m
Shear Force FX (KN) =1.632 < 2.41 KN
Bending Moment (KNM) = 1.02 i.e. = 104 kg
Max. BM acts on fixed supports UDL on Left
1.5m tube
UDL on Right Part UDL on Right
+y w
+x
a b
L
Span of cantilever (m) =1.40 m
UDL (KN/m) = 2.04 KN
Distance ‘a ‘(m) = .40m
Distance ‘X’ (m) = .10m
Shear Force FX (KN) = 2.04 < 2.41 KN
Bending Moment (KNM) = 1.428
Max. BM acts (kNm) = 1.836 i.e. = 187 kg
Max. BM acts on fixed supports
UDL on Part of Cantilever

4. 4
+y w
+x
a b
L W
Span of cantilever (m) =1.40 m
UDL (KN/m) = 2.04 KN
Distance ‘a ‘(m) = .40m
Distance ‘b’ (m) = 1m
Distance ‘x’ (m) = .2m
Shear Force FX (KN) = 2.04 < 2.41 KN 2.5 m
Bending Moment (KNM) = 1.428
Max. BM acts (kNm) = 1.836 i.e. = 187 kg
Max. BM acts on fixed supports
UDL on Full Span
+y w
+x
L
Span of cantilever (m) =1.40 m
UDL (KN/m) = 2.04 KN
Distance ‘x’ (m) = .05m
Shear Force FX (KN) = 2.448 = 2.41 KN

5. 5
Bending Moment (KNM) = 1.4688
Max. BM acts (kNm) = 1.9992 i.e. = 203 kg
Max. BM acts on fixed supports
Varying Load on Cantilever
W
+x
L
Span of cantilever (m) =1.40 m
UDL (KN/m) = 2.04 KN
Distance ‘x’ (m) = .23m
Shear Force FX (KN) = 1.049 KN < 2.41 KN
Bending Moment (KNM) = 0.41965 kNm
Max. BM acts (kNm) = .6664 i.e. = 67 kg
Max. BM acts on fixed supports
F=ma
F= 1 kg x (9.81 m/s)
F= 1000 g x 9.81 m/s
F= 9.81 N
F = .00981 KN
1KN= 101 KG
Max.Shear for 4mm tube = 2.41 KN

6. 6
Load acting on Individual Scaffolding Tube
Point load on Cantilever = 1.5 KN
UDL on Left Part =1.2 KN
UDL on Right part= 1.8 KN
UDL on Part of Cantilever = 1.8 KN
UDL on Full Span = 1.9 KN
Varying Load on Cantilever = .6664 KN
Total load which can withstand =8.8664 KN
Max. Allowable axial load of standard 2m effective length = 29.10 KN > 8.86 KN
Allowable Slip Force of double coupler class B= 9.10 KN > 8.86 KN
So the proposed method is safe to use.
Note: Load acting upward is considered as positive while the load acting down ward is taken as
negative. Sagging bending moment is taken as positive and hogging as negative.
Reference: Section Properties of scaffold tubes (BS EN 39)