Posted on 05/04/2006 7:17:20 PM PDT by Robert A Cook PE
My dad (long time civil structural engineer) sent the following question this evening to me:
Tomorrow morning, I need the drag of one square foot of plate in 6 mph water. Not edge effects, downstream turbulence, corner losses, etc. Just how much force will I have to provide to hold a square foot of plate still into a 6 mph current? No, not in channel. In open water.
I can't find it ANYWHERE! Durn! Got a structure in a pickle in water, and I really need that drag force to figure piling forces. My Olde Books are EMPTY on the subject.
Anybody got a suggestion of how much it will take? Please?
Ramon in a mess, Durn!
e may be on to something expontial.
....and my finale'
What did you get when you reeled in the 7 lb rainbow ?
.
.
.....a 120# homosexual
Try the veal - and enjoy your stay in the Catskills
I agree with RAY's answer.
I used the simple expedient of imagining a square plate or board being pushed by hand at a walking pace through water.
I figured about 75 pounds for a one foot square object, so 174 pounds of force for the size described sounds intuitively correct.
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