7/29/2019 Assignment 2 2012

1/4

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7/29/2019 Assignment 2 2012

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Assignment2 RIICCWD530A Preparedetaileddesignofsurfacedrainage

Mark: 80

Marksaregivenforcorrectanswers,correctworkingsandforclearandprofessionalsettingoutofassignmentquestions.Sopleaseshowallcalculations,stateand

referenceyourreasoningforanswersandchoicesinanswers.Showformulaeused

andwheredataforthoseformulaewerederivedorobtainedfrom.

IncludeexcelandAutoCADfileswhereused.Ensurethesefilesareprintreadyand

informationwithinthefilesisfullylabelled.

Yourassignmentshouldconsistofasinglemasterfilewhichcontainsallthe

assignmentquestionsandtheanswers.Thisfileshouldrefertootherfilessubmitted

asappendixes.

For

example:

Masterfileisnamed: JohnSmithAssignment1.pdf

Additionalfilesare: JohnSmithassignment1appendix1.xls

Assignment2isdesignedtobuildonassignment1.Pleasedonotattemptassignment2untilyouhaveachievedapassmarkof60%inassignment1.In

assignment2therearemoredecisionsthatyouneedtomake,justifyandreference.

Themajorityofmarksareforcorrectworkingsandforclearandprofessionalsetting

outof

assignment

questions.

So

please

show

all

calculations,

state

and

reference

yourreasoningforanswersandchoicesinanswers,andshowformulaeusedand

wheredataforthoseformulaswasderivedorobtainedfrom.Takeparticularcarein

justifyingwhyyouhavemadeyourchoicesofdesignorcalculations.

Apassmarkof60%isrequiredforeveryquestioninassignment2Pleasedonotattemptassignment3beforeyouhaveachievedtherequiredpass.

7/29/2019 Assignment 2 2012

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Qu

BashoimpimphasbeB:

stion 1

ed on a pawn in the fiervious; caervious ara return psed in urb

(a) Calcul

(b) Calculpipe 1)

rcel of landgure belowtchment Bas are direriod of 5 yn areas o

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atchmen

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B

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in Tamwor. Catchmehas an arectly connecars. The A

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t Surfa

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n 1 ( 4

th, considet A has anof 3.2 ha

ted to theR&R recoThe follo

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r the two inarea of 1.3nd is 60%tormwatermends thing criterio

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7/29/2019 Assignment 2 2012

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Section 2 ( 40marks )

Question1 (40Marks)Findasuitablesizeforaconcretepipeculverttodischargeaflowof2.9m

3/switha

maximumoutletvelocityof2.4m/s.Giventhatthelengthoftheculvertis20monan

invertslopeof0.36%andthetailwaterdepthis0.7m.

Theinlettypeofpipeisgrooveandwithheadwaterandhasthefollowingcharacteristics:

ke=0.20andn=0.012.

Amaximumpipesizeof825mmistobeused.

(a) TabulatetheresultsforallthreepipesizesontheRTAstandardform.

(b) Selectthemostsuitablepipesizefortheculvertanddiscusstheadvantagesanddisadvantagesofyourselection.Youmayconsiderthemethodsofculvertoperation

explainedinUnit4.

Pleaseincludetheallfigureswithdrawnlineswhichyouusedtoformulatepart1a.