Staility – I : Chapter 2

 

  1. A rectangular deep tank is 22m x 20m x10m. Above the crown of the tank is a rectangular trunkway 0.2m high, 5m long and 4m wide. Find the thrust on the tank lid when the tank is pressed up with SW to a head of 2.64m above the crown of the tank .
Solution :

Rectangular deep tank  = 22m x 20m x10m
Trunk way = (5m x 4m x 0.2m)ans 9


Pressure = (depth x density)
              = (2.64m – 0.2) x1.025

Since , Depth is (2.64m – 0.2 )  and we have the calculate the thrust   act  on the trunkway and the water level above the trunkway will act as thrust )

If this trunkway would have been placed inside the tank then the depth will be   (10m + 2.64m – 0.2/2m ).

Area of the trunkway = (L X B)
                                = 4×5
                                 =20 m2

Thrust experienced = (P X  A)
                           = (2.501 x 20 )
                          = 50.02tonnes.

About the author

Amit Sharma

Graduated from M.E.R.I. Mumbai (Mumbai University), After a brief sailing founded this website with the idea to bring the maritime education online which must be free and available for all at all times and to find basic solutions that are of extreme importance to a seafarer by our innovative ideas.

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