Hydrostatic pressure force on a hinged gate

This video movie reviews the derivation of the hydrostatic pressure force ona hinged gate. Relevant applications include control structures in urban water supply systems, bottom outlets at dams and reservoirs, sewers and tidal gates.
Bibliography
ROUSE, H. (1938). "Fluid Mechanics for Hydraulic Engineers." McGraw-Hill Publ., New York, USA (also Dover Publ., New York, USA, 1961, 422 pages)
HENDERSON, F.M. (1966). "Open Channel Flow." MacMillan Company, New York, USA.
HAMILL, L. (1995). "Understanding Hydraulics." MacMillan, London, UK.
CHANSON, H. (2004). "The Hydraulics of Open Channel Flow : An Introduction." Butterworth-Heinemann, 2nd edition, Oxford, UK, 630 pages (ISBN 978 0 7506 5978 9).
CHANSON, H. (2014). "Applied Hydrodynamics: An Introduction." CRC Press, Taylor & Francis Group, Leiden, The Netherlands, 448 pages & 21 video movies (ISBN 978-1-138-00093-3).
Hubert CHANSON KZbin channel { / @hubert_chanson }
Pressure and hydrostatics - Hydrostatic pressure distribution in a reservoir { • Pressure and hydrostat... }
How to predict the pressure distributions in free-surface flows? { • How to predict the pre... }
Fluid Mechanics - When will a hinged gate tip? { • Fluid Mechanics - When... }
The Equation of Conservation of Mass in Fluid Mechanics { • The Equation of Conser... }
Equation of conservation of momentum in fluid mechanics (1) Integral form { • Equation of conservati... }
Equation of conservation of energy in fluid mechanics { • Equation of conservati... }
Errata (Slide 10 & 11)
Moment about axis: M = (0.5.Ro.g.D^2.B).(2/3.D) + (Ro.d.(d-D).D.B).(1/2.D)