Evlaute width and depth for stable alluvial canals, Civil Engineering

Assignment Help:

Q. Evlaute width and depth for stable alluvial canals?

Lacey originally evolved width and depth formulae for stable alluvial canals. These were the following. 

P = 4.836 Q1/2

R = 0.473 (Q/f)1/3

wherein P is wetted perimeter in m, Q is discharge in m3/s, R is hydraulic mean radius in m and f is the silt factor which is given as 1.76 m1/2, m being weighted mean diameter of bed material in mm. On the basis of data of a few rivers, Lacey showed that his P:Q relationship is valid not only for canals but also for alluvial rivers. Since river sections are much wider than canals, P and R can be replaced by W and D, namely width and depth respectively.


Related Discussions:- Evlaute width and depth for stable alluvial canals

Enthalpy, h = u + pv is a combination of properties and hence must also be ...

h = u + pv is a combination of properties and hence must also be a property.  h is the SPECIFIC ENTHALPY in kJ/kg  H = U + pV is the ENTHALPY in kJ

Compaction to freshly placed concrete piles, Compaction to freshly placed c...

Compaction to freshly placed concrete piles  In general practice, reliance is placed on the self-compaction of particularly designed concrete mixes to achieve adequate compact

Storm water, what are the roles of civil engineers in storm water managemen...

what are the roles of civil engineers in storm water management

Design of a weir, how do you design a weir - broad crested shape

how do you design a weir - broad crested shape

Afflux on account of obstruction to flow, Q. Afflux on account of obstructi...

Q. Afflux on account of obstruction to flow? Even if the river constriction on account of approach banks is not excessive and bridge waterway is wider than that causing critica

Difference between anionic emulsions and cationic emulsions, Q. Bitumen emu...

Q. Bitumen emulsions - difference between anionic emulsions and cationic emulsions? Bitumen emulsions comprises particles of bitumen dispersed in water by using emulsifying age

Explain the term - strength cement, Explain the term - strength cement ...

Explain the term - strength cement It should be appreciated that the tensioning arrangement shall have to be kept in place until tendons are cut. This shall depend on how quick

Highway pavement design, Explain the important factors affecting the design...

Explain the important factors affecting the design of pavement?

State the net allowable bearing pressure, A footing, 2 m square, is founded...

A footing, 2 m square, is founded at a depth of 1.5 m in a sand deposit, for which the corrected value of N is 27. The water table is at a depth of 2 m from the surface. Verify the

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd