Design Projects D10.1 A straight weedy-earth channel has the trapezoidal shape 35°. The channel has of Fig. 10.7, with b = 4 m and 0 = a constant bottom slope of 0.001. The flow rate varies seasonally from 5 up to 10 m²/s. It is desired to place a sharp-edged weir across the channel so that the water depth 1 km upstream remains at 2.0 m ± 10 percent throughout the year. Investigate the possibility of accom- plishing this with a full-width weir; if successful, deter- mine the proper weir height Y. If unsuccessful, try other alternatives, such as (a) a full-width broad-crested weir or (b) a weir with side contractions or (c) a V-notch weir. Whatever your final design, cite the seasonal variation of normal depths and critical depths for comparison with the desired year-round depth of 2 m.
Design Projects D10.1 A straight weedy-earth channel has the trapezoidal shape 35°. The channel has of Fig. 10.7, with b = 4 m and 0 = a constant bottom slope of 0.001. The flow rate varies seasonally from 5 up to 10 m²/s. It is desired to place a sharp-edged weir across the channel so that the water depth 1 km upstream remains at 2.0 m ± 10 percent throughout the year. Investigate the possibility of accom- plishing this with a full-width weir; if successful, deter- mine the proper weir height Y. If unsuccessful, try other alternatives, such as (a) a full-width broad-crested weir or (b) a weir with side contractions or (c) a V-notch weir. Whatever your final design, cite the seasonal variation of normal depths and critical depths for comparison with the desired year-round depth of 2 m.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Please make a design and the description of the design.
Transcribed Image Text:Design Projects
D10.1 A straight weedy-earth channel has the trapezoidal shape
35°. The channel has
of Fig. 10.7, with b = 4 m and 0 =
a constant bottom slope of 0.001. The flow rate varies
seasonally from 5 up to 10 m²/s. It is desired to place a
sharp-edged weir across the channel so that the water
depth 1 km upstream remains at 2.0 m ± 10 percent
throughout the year. Investigate the possibility of accom-
plishing this with a full-width weir; if successful, deter-
mine the proper weir height Y. If unsuccessful, try other
alternatives, such as (a) a full-width broad-crested weir
or (b) a weir with side contractions or (c) a V-notch weir.
Whatever your final design, cite the seasonal variation of
normal depths and critical depths for comparison with the
desired year-round depth of 2 m.
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