Road Guy
Well-known member
Well we worked about 25 different versions of manning equation
(I guess thats a hint?)
this seems like a really good prep class, but the instructors are a little too overconfident, they basically said that 90% of the CERM is crap and all you really need (other than their book) is the appendixes and a few of the charts / formulas... (found that a little funny)
This is where we spent the most of our time when we were not doing the mannings marathon:
the energy equation about 10 times
darcy & hazen williams (about 10 each)
Froude #
Reynolds #
critical depth
hydraulic jump
1 pump question (really a hazen williams / losses question)
******************************************************
I will try and scan the cheat sheet list of formulas if I can get time, most likely it probably wont be until next week though.
Here are 2 problems to chew on:
1. CERM Porblem 20A-B(Page 19.5) they said this was a "good" problem...
2. A 42" concrete culvert pipe is 250' long, and has a slope = .006. The culvert entrance is flush & square edged. Tailwater level is just above the crown of the barrell, headwater= 5' above the crown of the culverts inlet. What is the capacity in cfs?
A. 60
B. 80
C. 100
D. 120
(I guess thats a hint?)
this seems like a really good prep class, but the instructors are a little too overconfident, they basically said that 90% of the CERM is crap and all you really need (other than their book) is the appendixes and a few of the charts / formulas... (found that a little funny)
This is where we spent the most of our time when we were not doing the mannings marathon:
the energy equation about 10 times
darcy & hazen williams (about 10 each)
Froude #
Reynolds #
critical depth
hydraulic jump
1 pump question (really a hazen williams / losses question)
******************************************************
I will try and scan the cheat sheet list of formulas if I can get time, most likely it probably wont be until next week though.
Here are 2 problems to chew on:
1. CERM Porblem 20A-B(Page 19.5) they said this was a "good" problem...
2. A 42" concrete culvert pipe is 250' long, and has a slope = .006. The culvert entrance is flush & square edged. Tailwater level is just above the crown of the barrell, headwater= 5' above the crown of the culverts inlet. What is the capacity in cfs?
A. 60
B. 80
C. 100
D. 120
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