A wide, shallow sand-bed channel has a slope of 0.00105 (assume smooth channel banks). The average grain size = 0.36 mm at isb = 40.2%. The flow depth of the channel is equal to 3.3 ft at flowrate and cross area of 5380 ft^3/s and 640 ft^2, respectively. Based on Einstein (1950) for total bed-load material transport model using size fraction, Find the following by choosing the correct answer of the following: 1- The friction velocity (u*') is equal to: 0.12 ft/s 0.40 ft/s 0.45 ft/s Non of them 2- The hydraulic radius (Rh') is equal to (if u*'= 0.323 fps): 4.28 ft 3.08 ft 2.87 ft Non of them
A wide, shallow sand-bed channel has a slope of 0.00105 (assume smooth channel banks). The average grain size = 0.36 mm at isb = 40.2%. The flow depth of the channel is equal to 3.3 ft at flowrate and cross area of 5380 ft^3/s and 640 ft^2, respectively. Based on Einstein (1950) for total bed-load material transport model using size fraction, Find the following by choosing the correct answer of the following: 1- The friction velocity (u*') is equal to: 0.12 ft/s 0.40 ft/s 0.45 ft/s Non of them 2- The hydraulic radius (Rh') is equal to (if u*'= 0.323 fps): 4.28 ft 3.08 ft 2.87 ft Non of them
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A wide, shallow sand-bed channel has
a slope of
0.00105 (assume smooth channel banks).
The average grain size = 0.36
mm at isb = 40.2%. The flow depth of the
channel is equal to 3.3
ft at flowrate and cross area of 5380 ft^3/s
and 640 ft^2,
respectively. Based on Einstein (1950) for
total bed-load material transport model
using size fraction, Find the following by
choosing the correct answer of the
following:
1- The friction velocity (u*') is equal
to:
O 0.12 ft/s
0.40 ft/s
0.45 ft/s
Non of them
2- The hydraulic radius (Rh') is
equal to (if u*'= 0.323 fps):
4.28 ft
3.08 ft
2.87 ft
Non of them
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