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

Highway Engg, what are lab and field test carried on soil subgrade

what are lab and field test carried on soil subgrade?

State the term directly below the edge of the footing, The load from a cont...

The load from a continuous footing of 1.8 metres width, which may be considered to be a strip load of considerable length, is 180 kN/m 2 . Verify the maximum principal stress at 1.

Determine the hydraulic radius for rectangular open channel, Determine the ...

Determine the hydraulic radius R for a rectangular open channel with dimensions of 6 ft wide and 4 ft high (side walls) flowing at a depth of 3 ft. Solution: R = A/P Cross-s

Projects, GIS AND REMOTE SENSING

GIS AND REMOTE SENSING

Compaction, describe how quality control is maintained in a rolled fill dam...

describe how quality control is maintained in a rolled fill dam

Hydraulics, The atmospheric pressure is given 680 mm Hg at a certain mounta...

The atmospheric pressure is given 680 mm Hg at a certain mountain location of elevation 2000 m. air density is 1.007 kg/m3. Find the pressure in kPa.

Function of longitudinal joints in concrete road pavements, Question Wh...

Question What is function of longitudinal joints in concrete road pavements ? Answer A longitudinal joint consists of a tie bar located at mid-depth of a concrete pav

Quality of constraction material ., haw to control quality of constraction...

haw to control quality of constraction material and it''s stage of control, control management, quality of performance ,organization for control

Surveying, with a neat well labelled sketch, explain reciprocal ranging.

with a neat well labelled sketch, explain reciprocal ranging.

Survey, relationship between included angles and whole circle bearing

relationship between included angles and whole circle bearing

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