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

Casing has to be left in for mini-piles, Question What are thought in d...

Question What are thought in determining whether casings have to be left in for mini-piles ? Answer Contrary to most of pile design, design of min-piles is controlled

Surveying, what is meant by geodetic survey

what is meant by geodetic survey

Self compacting concrete, what will be the w/c ration and cement/fly ash ra...

what will be the w/c ration and cement/fly ash ration for the particular mix design

Full bore flow in drainage design, Q. Full bore flow in drainage design? ...

Q. Full bore flow in drainage design? In the design of gravity drainage pipes, full bore flow capacity is usually adopted to check against design runoff. Though one should note

Traditional granular sub-base, Question For rigid pavement, what is rec...

Question For rigid pavement, what is recompense of using lean concrete sub-base instead of traditional granular sub-base? Answer There are some shortcomings of using

Cone, if the diameter of the base remains constant by what factor should th...

if the diameter of the base remains constant by what factor should the altitude be multiplied to produce a cone with twice volume as the original

Human values, give the two aspects of honesty& explain

give the two aspects of honesty& explain

What is unimat machine, Q. What is Unimat Machine? The machine has got ...

Q. What is Unimat Machine? The machine has got 16 independently tiltable tamping tools which enable the machine to work on points and crossing as well as on plain track. The ma

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