Description

This is a GROUP PROJECT. You need to select A GROUP LEADER, keep records of ALL correspondence within the

group $($proofs required!$)$ and define role descriptions for each person within the group. ONLY ONE project needs to be

prepared and EVERYONE in the group needs to submit the same project content $($saved using your own number and

names$)$ and upload individually.

Scenario:

A Major of a municipality asks for some consultancy from an experienced Engineering firm for some maintenance in the

open channel that flows through the town, where ownership and authority of rivers and canals belong to the District

Governor.

Existing:

Topographical information and some details about the channel are given as follows:

A lake $($reservoir$)$ outside the town is connected to a rectangular channel as illustrated in the sketch below $($may not be

drawn correctly and accurately$)$ and flows through neighbourhood.

PHYSICAL PROPERTIES

Elevation difference between the highest level of the intake and the lake surface is $H.$ Rectangular channel base width

is measured to be $Bm.$ The part between A and $B$ is Earth, straight, and uniform with clean, recently completed surface

with a longitudinal slope of $S_{01},$ where the section after $B($which is closer to the town$)$ is composed of Earth, straight, and

uniform with gravel, uniform section, clean surface with a longitudinal slope of $S_{02}.$ Use variables from the separately

provided database sheet, if available! If not; $($ie$.$ for $n_1$ and $n_2$ use an acceptable figures explaining the reason and using

references where appropriate.

Design:

a$.$ Be aware that the sketch above may not indicate the correct configuration of slopes! So find out the correct slope types,

check your slope condition $($steep or mild slope$)$ and proceed for calculations accordingly,

b$.$ Find out the discharge for the open channel,

c$.$ Find out the critical depth $y_a,$

d$.$ Find out normal depths of $y_1$ and $y_2,$

e$.$ If hydraulic jump exists, give the location of the jump $($on steep slope channel or on mild slope channel$),$ total length

and, depths before and after the hydraulic jump.

f$.$ If hydraulic jump is not expected, find out total length of the gradually varied flow curve using appropriate intervals and

calculate flow depths for each interval using Direct Step Method.

g$.$ Imagine $y_3$ depth is required further down the $S_{02}.$ Set your water depth and design your channel accordingly $($i$.$e$.$ by

changing the channel width or changing the bottom elevation$).$