A manning equation problem and solution

[socalpe]

I cannot figure out how to find out 101.1 in 8D) Step 2. Please help!

 

[RIP - VTEnviro]

You rang?

All kidding aside, is that from a PE prep book? That looks way more difficult than an exam question.

 

[socalpe]

You rang?

All kidding aside, is that from a PE prep book? That looks way more difficult than an exam question.

It is from WR Practice Problems I downloaded on this website. Someone posted it here.

 

[roadwreck]

You rang?

All kidding aside, is that from a PE prep book? That looks way more difficult than an exam question.

C'mon VT, the question asked for help with a manning equation which would go something more along the lines of this:

+

=

 

[IlPadrino]

I cannot figure out how to find out 101.1 in 8D) Step 2. Please help!

The bottom elevation of the downstream channel is given in the problem as 99 feet. Problem 8B found the depth of flow downstream to be 2.099 feet (2.1 is close enough, eh?). The elevation of the downstream surface is then 99.0ft + 2.1ft = 101ft.

 

[socalpe]

The bottom elevation of the downstream channel is given in the problem as 99 feet. Problem 8B found the depth of flow downstream to be 2.099 feet (2.1 is close enough, eh?). The elevation of the downstream surface is then 99.0ft + 2.1ft = 101ft.

Thank you! Now I understand it better.

 

[roadwreck]

Thank you! Now I understand it better.

Was my equation of any use?

 

[socalpe]

Was my equation of any use?

HaHa

 

[RIP - VTEnviro]

C'mon VT, the question asked for help with a manning equation which would go something more along the lines of this:

Yes but there's three right answers to your equation!

 

[roadwreck]

Yes but there's three right answers to your equation!

Very true, but mine was an equation. Yours was just...

...well I'm not sure what it was, but it wasn't an equation

 

[Dleg]

That was awesome, roadwreck. :appl:

 

[Mike_NC]

Is this a AM type problem?