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

Structures, Derivation of Moment-Area Method

Derivation of Moment-Area Method

Defaults for precast concrete pipes made by spinning, Q. Defaults for preca...

Q. Defaults for precast concrete pipes made by spinning? Small diameter precast concrete pipes are generally manufactured by spinning method. The spinning method fundamentally

State the term - post-tensioned concrete, State the term - Post-tensioned c...

State the term - Post-tensioned concrete In Post-tensioned concrete construction, as shown in Figure,  tendons are placed inside concrete and stretched after concrete has attai

Minimum volume of sump volume for pumps, Minimum volume of sump volume for ...

Minimum volume of sump volume for pumps Maximum pumping rate = Q P Volume of sump = V Inflow Rate = Q i Cycle Time T c = t 1 + t 2 t 1 = V / Q P - Q i t 2

Retaioning walls, what are the uses of retaining wall?!

what are the uses of retaining wall?!

Calculate the percent grade of line, 1. The topography of a local valley is...

1. The topography of a local valley is shown. The horizontal distance between point P and Q is 11,456-ft. The percent grade (%) of line P-Q .     2. Based on the info

Proctor test for GSB material, what is the procedure for gsb proctor test f...

what is the procedure for gsb proctor test for matrial sampling for lab density

Use of primers in joint sealant, Q. Use of primers in joint sealant? Mo...

Q. Use of primers in joint sealant? Most of the joint sealants applied in concrete joints are adhesive and recommended joint width/depth of joint sealant is from 2:1 to 1:1 as

Remedial proposal to rectify situation, Question During deep excavatio...

Question During deep excavation , neighbouring ground water table is drawn down that might affect settlement of nearby buildings. What is remedial proposal to rectify situatio

Prismatic compass, what is the role of agate cape in prismatic compass?

what is the role of agate cape in prismatic compass?

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