Installation Watertechnology

1st
Elongated hatches that are shaped in different ways according to Fig. Water to the left and air off
atmospheric pressure to the right, same water depth. Sketch resulting forces on the hatches due to
water pressure and divide the forces and draw in horizontal and vertical. What can you say
about the ratio of the magnitude of the forces on the 5 different slots, order in magnitude
from least to greatest, if any or all are the same size then indicate it.
2nd
Calculate the height of the magazine to the right if you want a flow of Q = 50 l / s
through the tube. Friction coeff. for D1 = 100mm, the roughness is e1 = 0.01 and for D2 = 75
mm is e2 = 0.01 mm. Temp 10 °.
All possible transitions are sharp-edged.
The levels can be considered constant.
3rd
Calculate the stability of the fleet (see fig) and indicate if it is stable. The raft is made up
of a platform and two 3.6 m long floating bodies with rectangular cross section.
The floating bodies are rigidly connected to each other via the platform /
The weight of the platform is 4000 kg and its center of gravity is 1.2 m away
the bottom of the float elements. On top of the raft a small superstructure should be placed, it
weighs 500 kg and has its center of gravity 2.5m from the bottom. The floating elements weigh 400
kg per element and its center of gravity is 0.5 m from the bottom. (dimensions mm)

4th
Calculate the force on the round cover (D = 1200 mm) and the torque around the shaft as
goes horizontally through the center of the door. Water is left and right
behind the door is atmospheric pressure. The angle to the water surface is 40 °