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

Traffic surveys, Traffic Surveys: The following traffic surveys are n...

Traffic Surveys: The following traffic surveys are needed for preparing a good road project: Classified Volume Counts This survey is normally carried out for 7 days,

What do you mean by elastomeric bearings, Q. What do you mean by Elastomeri...

Q. What do you mean by Elastomeric bearings? Steel bearings are good but suffer from problems of corrosion and high level of maintenance. Due to these problems of steel bearing

Differentiate, differentiate between components and resolved parts

differentiate between components and resolved parts

Use of stone aggregates in road construction, Use of Stone Aggregates in Ro...

Use of Stone Aggregates in Road Construction Stone aggregates are extensively used in roads in pavement layers. They are obtained from natural rock. The following geological

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

Explain the important factors affecting the design of pavement?

How can designer cater for stability of minor slips, Question Soil nail...

Question Soil nails are mostly designed for stabilization of key slips . How can designer cater for stability of minor slips? Answer There are many methods to treat mi

Important items during level crossing inspection, Q.7.- Write the important...

Q.7.- Write the important items to be inspected during level Crossing inspection. How do you take census of traffic at level crossing. Ans.-Important items to be inspected duri

Importance of poles in critical load combinations, Importance of poles in c...

Importance of poles in critical load combinations The poles are generally designed for the following critical load combinations  : (a)  Bending due to wind load on the cable

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

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