Are you doing your homework?
"Can anyone calculate the number of gallons that a 30 inch wide
inches long, will hold ?? "
Pie are square
Area of a circle equals Pi times the radius squared.
3.14 * 15" * 15"
33912 cubic inch = 146.8051948 gallon [US, liquid]
This assumes the culvert is round, is capped on one end, and stood up,
then filled to the rim.
A culvert, laid horizontally, in the ground, would be filled to about
85% to 95%, considering air would be at the top. Well, that would be
during a flood, but in dry times, there might be a few inches, flowing.
Is the culvert oval shaped? I'll assume round.
Is the water stagnant or flowing?
Since you are too lazy to do your homework here's a bonus question.
What if you have a drainage canal, 15 feet wide and 10 feet deep. Water
is flowing, and the depth is 2 feet on the wall markings. You look
upstream to the mountains and it is raining steady. You have 3-30 inch
diameter x 20 foot culverts, side by side, in the culvert and they are
covered in concrete, with a road over them. Height from stream bottom
to road is 5 feet. You have someone 100 feet upstream, drop a floating
object in the water, and it takes 10 seconds to reach you.
How many gallons per minute are flowing through the culverts?
At what flow rate will the flow of water, exceed the capacity of the
culverts, and flow over the top of the road:
by 1 inch?
by 12 inches?
by 48 inches?
No one bothered to tell James how to convert cubic inches to gallons. The
conversion is 7.47 times cubic feet. So it was easiest to convert inches to
feet before finding volume - area of the base times height. I don't think
you can blame good education on not knowing that conversion rate.
Sure you can and should. An education isn't supposed to just stuff you
full of facts, it is supposed to each you how to learn. In this day and
age it is pretty easy to look up any unit conversion that is needed and
there are many online utilities that will even perform the conversions
Bull crap. It was taught in freshman science, but if you forget, I have at
least three books with that information. Education is not just knowing
facts, but how to find answers. Posting such a simple question on six
newsgroups is just a waste of time when it can be found so easily even with
a Google search. You have to want to know and not just take a lazy way out.
"How much water flows out of the mouth of the Mississippi per year. Give two
Assume width of river at the mouth is two miles, flow is 5MPH and average
depth is five feet. Turn crank.
Assume Mississippi drains the center half of the country (from Rockies to
Appalachia). That is, 1500 miles E-W, and 1000 miles N-S. Further assume
this area gets 50" of rainfall per year. Turn crank.
I was thinking the same thing.
If you assume the width of the culvert (that's assumed to be round in shape)
is also 2 times the depth (assuming a half-circle culvert), then you could
get that too.
I agree, not enough information given. I propose a new culvert shape with
straight sides of uneven length, with a bottom made of various balls placed
under a huge pool liner.
In fact if it is cylindrical the width should have been stated as it's
diameter so no "assumption" need be made, otherwise one can't be certain it
isn't rectangular with depth omitted as was "assumed" by the poster who said
it was flat. As is, either "assumption" was valid. lol
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