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

Explain measured shovel packing, Explain Measured shovel Packing Measu...

Explain Measured shovel Packing Measured shovel Packing essentially consists of accurate measurements of track defects particularly the unevenness and voids caused in the cour

Theory of structures, haw do you salve a supple supported beam with a sprin...

haw do you salve a supple supported beam with a spring balance

Define the frame column analysis, Define the Frame Column Analysis 1. B...

Define the Frame Column Analysis 1. Based on if a column section is a braced frame or unbraced frame. 2. Braced frame-indicates buckling mode shape does not involve tr

Explain the shrink factor of soil, Explain the Shrink Factor of Soil In...

Explain the Shrink Factor of Soil In addition to the swell factor and its associated load factor, soil also has a shrink factor. While the first two relate the volume of an equ

Premix carpet open graded, what is premix carpet open graded and where is i...

what is premix carpet open graded and where is it used and what are its limitations ?

Formation of pedestrian level winds around buildings, Q. Formation of pedes...

Q. Formation of pedestrian level winds around buildings? When a building blocks the wind blowing across it, part of the wind will escape over the top of the building. Some will

Roads in hilly areas, Roads in Hilly Areas: (a)        The alignment s...

Roads in Hilly Areas: (a)        The alignment selected should attain the changes in elevation by adopting the ruling gradient to the maximum length. Limiting and exceptional

List the factor that affect the permeability of a given soil, List the fact...

List the factors that affect the permeability of a given soil. Determine the precautions that should be taken so that satisfactory permeability data may be obtained. Explaining

Determine the magnetic declination at a place, Example : Determine th...

Example : Determine the declination at a place, if at noon the magnetic bearing to the sun is (a) 358° (b) 185° Solution: (a) Referring to given figure (a) since 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