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Stormwater test two questions and answers (graded a)
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Stormwater test two questions and answers
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Stormwater test two questions andanswers
What iiis iithe iiprimary iineed iifor iiflow iicontrol iiin iistormwater iimanagement? ii- iiAnswers ii-
To iilet iithe iiwater iistores iiin iidetention iibasins iiout iiat iia iislower iirate iithan iiit iiwas iiflowing
iiin
Which iiis iithe iileast iirestrictive iitype iiof iioutlet iiwith iiflow iidepth: iia iiweir, iian iiorifice, iior iia
iipipe? ii- iiAnswers ii-Weir
If iithe iiinlet iiis iisubmerged iiand iia iipipe iiis iivery iishort, iiit iimay iiactually iiact iias iiwhat? ii-
iiAnswers ii-An iiorifice
Why iican't iiwe iijust iidesign iithe iioutlet iicontrol iifor iithe iibiggest iistorm? ii- iiAnswers ii-If
iiyou iidesign iithe iioutlet iifor iithe iibiggest iistorm iiyou iiare iinot iigoing iito iistop iiany iiwater
iiflow iifor iiany iistorm iiexcept iithe iibiggest iione
What iitwo iithings iimust iibe iidone iiby iia iistormwater iiconveyance? ii- iiAnswers ii-•Handle
iithe iipeak iiflow iiwithout iifailure ii•Not iihave iiany iierosion
If iiI iihave iisteady ii- iiAnswers ii-state iiflow, iithe iifriction iiforce iiacting iiupslope iiis iiequal iito
iiwhat iiother iiforce?- iiActually iivelocity iisquared
For iiflow iiin iia iichannel, iiwhat iitwo iifactors iicontrol iithe iiresisting iifriction iiforce? ii-
iiAnswers ii-How iirough iithe iisurface iiis, iiand iihow iimuch iiwater iiwe iihave iiin iicontact
iiwith iithe iisurface!
\Write iiout iithe iiManning's iiEquation, iiand iidefine iithe iiterms. ii- iiAnswers ii-
V=(1.49/n)*R^⅔*S^½ iiV- iivelocity iiin iift/s, iin-Manning's iiroughness, iiS- iichannel iigrade
iiin iift/ft, iiR- iihydraulic iiradius
Describe ii(in iiwords) iiwhat iithe ii"hydraulic iiradius" iireally iimeans. ii- iiAnswers ii-How
iimuch iiwater iiin iiyour iichannel iiis iiactually iitouching ii"stuff"
What iiis iithe iihydraulic iiradius iifor iivery iishallow iieven iiflow? ii- iiAnswers ii-Very iishallow
iieven iiflow iiwill iihave iia iilarge iihydraulic iiradius iiand iia iislower iivelocity
Designing iia iichannel iirequires iisolving iiManning's iiEquation iiand iiwhat iiother iiequation
iisimultaneously? ii- iiAnswers ii-Continuity iiEquation
, The iipipe iiflow iiequation iipresented iiin iiclass iisays iithat iithe iiflow iirate iidepends iion iithe
iiloss iicoefficient iiand iiwhat iitwo iiother iiInputs? ii- iiAnswers ii-Cross iisectional iiarea iiand
iithe iidifference iiin iiwater iielevation
How iido iiwe iifigure iiout iithe iiflow iirate iithat iiour iichannel iimust iihandle? ii- iiAnswers ii-
Use iithe iirational iimethod iior iithe iiTR55 iimethod
The iiManning's iin iiroughness iivalues iidepend iion iinot iijust iithe iichannel iimaterial, iibut
iiwhat iiother iichannel iicharacteristic? ii- iiAnswers ii-Morphology iiof iithe iichannel
Use iiof iiManning's iiequation iigenerally iiassumes iithat iithe iiflow iidepth iiis iimuch iigreater
iithan iiwhat iiother iimeasurement? ii- iiAnswers ii-Roughness iielement
Describe iia iicase iiin iiwhich iiManning's iin iican iichange iirather iisuddenly. ii- iiAnswers ii-If
iiyou iihave iia iichannel iithat iiis iilined iiwith iigrass iibut iithe iiflow iirate iiis iiso iifast iithat iiit
iilays iithe iigrass iidown iiflat
How iido iiyou iichange iiyour iichannel iidesign iiif iithe iivelocity iiis iihigher iithan iithe
iipermissible iivelocity iifor iiour iisoil iitype iiand iicover? ii- iiAnswers ii-Reduce iithe iislope,
iimake iithe iichannel iiwider, iiuse iia iidifferent iimaterial
What iiare iithe iitwo iireasons iithat iiwe iidon't iijust iimake iievery iichannel iivery iibroad iiand
iishallow? ii- iiAnswers ii-Cost iiand iispace, iiif iithe iiflow iigoes iitoo iislow iiit iican iicause iiother
iiproblems iilike iisandbars
What iiare iithe iitwo iitechniques iifor iidealing iiwith iiincreasing iiflow iialong iithe iilength iiof iia
iichannel? ii- iiAnswers ii-Make iithe iichannel iiwider, iiincrease iito iimore iierosion iiresistant
iimaterials
What iiis iithe iibiggest iiproblem iiat iia iipipe iior iichannel iiinlet? ii- iiAnswers ii-Getting iiwater
iiinto iithe iichannel iior iiinlet
What iiis iithe iibiggest iiproblem iiat iithe iioutlet iiof iithe iichannel iior iipipe? ii- iiAnswers ii-
Making iisure iithe iiflow iidoesn't iierode iithe iiarea iiwhile iiit iiis iiflowing iiout
What iiare iithe iitwo iiways iiwe iitalked iiabout iidealing iiwith iithe iioutlet iiproblem? ii-
iiAnswers ii-Outlet iiprotection iilike iirock iiaprons iior iienergy iidissipation iiblocks, iiPlunge
iipools
What iiis iithe iidefinition iiof iia ii"watershed"? ii- iiAnswers ii-Common iiarea iiwhere iirunoff
iigoes iito iiand iicollects, iialso iihas iithe iisame iicommon iioutlet
How iido iithe iirunoff iirate iiper iiunit iiarea iiand iirunoff iivolume iiper iiunit iiarea iigenerally
iichange iias iithe iiwatershed iiarea iiIncreases? ii- iiAnswers ii-Runoff iiincreases iiwith iiarea.
iiDensity iidecreases iiwith iiincreasing iiarea. iiRainfall iiintensity iidecreases iiwith iiarea
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