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  2. A-Jacks - Wikipedia

    en.wikipedia.org/wiki/A-Jacks

    Open channel applications include bank stabilization, flow and grade control, scour protection for bridge piers, and biostabilization.The primary mechanism of protection employed is an increase in the relative roughness of the channel bank (as characterized by the Manning's Roughness Coefficient); the Manning's n is relatively high at 0.1.

  3. Hydraulic roughness - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_roughness

    Manning's n is used extensively around the world to predict the degree of roughness in channels. The coefficient is critical in hydraulic engineering, floodplain management, and sediment transport studies. Flow velocity is strongly dependent on the resistance to flow. [3] An increase in this n value will cause a decrease in the velocity of ...

  4. Albert Strickler - Wikipedia

    en.wikipedia.org/wiki/Albert_Strickler

    [3] The report validated the Gauckler formula and by inference, the Manning formula. Strickler proposed that the Ganguillet-Kutter n-value, used to characterize hydraulic roughness in the Manning formula, could be defined as a function of surface roughness, k S {\displaystyle {k}_{S}} .

  5. Manning formula - Wikipedia

    en.wikipedia.org/wiki/Manning_formula

    Note: the Strickler coefficient is the reciprocal of Manning coefficient: Ks =1/ n, having dimension of L 1/3 /T and units of m 1/3 /s; it varies from 20 m 1/3 /s (rough stone and rough surface) to 80 m 1/3 /s (smooth concrete and cast iron). The discharge formula, Q = A V, can be used to rewrite Gauckler–Manning's equation by substitution for V.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. Hudson's equation - Wikipedia

    en.wikipedia.org/wiki/Hudson's_equation

    Hudson's equation, also known as Hudson formula, is an equation used by coastal engineers to calculate the minimum size of riprap (armourstone) required to provide satisfactory stability characteristics for rubble structures such as breakwaters under attack from storm wave conditions.

  8. Chézy formula - Wikipedia

    en.wikipedia.org/wiki/Chézy_formula

    The Chézy Formula is a semi-empirical resistance equation [1] [2] which estimates mean flow velocity in open channel conduits. [3] The relationship was conceptualized and developed in 1768 by French physicist and engineer Antoine de Chézy (1718–1798) while designing Paris's water canal system.

  9. Peyton Manning rips 49ers WR Brandon Aiyuk after ... - AOL

    www.aol.com/sports/peyton-manning-rips-49ers-wr...

    We need the reps!” Manning said, clearly frustrated, while talking with his brother, Eli, and former New England Patriots head coach Bill Belichick on their alternate broadcast of the game on ESPN2.