WATER RESOURCES ENGINEERING
3rd Edition
ISBN: 9781119490579
Author: Mays
Publisher: WILEY
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3. If the most efficient of all sections will be used, what shape and size of open channel
would you choose or recommend to carry 5.60 m³/s discharge having a mean velocity
of 2 m/s? Show proof in your choice.
The upstream channel width = 322 ft; depth = 8.6 ft. The discharge is 27,300 cfs and is all contained within the channel. Channel slope = 0.004 (ft/ft) The bridge abutments consist of vertical walls with wing walls, width = 122 ft ; with 3 sets of piers consisting of 3 columns 15 inches in diameter The bed material size: from 0 to 3 ft the D50 is 0.0010 ft and below 3 ft the D50 is 0.0023 ft with a fall velocity of 0.33 ft/sec. Original depth at bridge is estimated as 7.1 ft Determine: The magnitude of the contraction scour depth.
Please pay attention to the details in bold font while solving. Thanks! Please do not use solution from Chegg
The upstream channel width = 322 ft; depth = 8.6 ft. The discharge is 27,300 cfs and is all contained within the channel. Channel slope = 0.004 (ft/ft) The bridge abutments consist of vertical walls with wing walls, width = 122 ft ; with 3 sets of piers consisting of 3 columns 15 inches in diameter The bed material size: from 0 to 3 ft the D50 is 0.0010 ft and below 3 ft the D50 is 0.0023 ft with a fall velocity of 0.33 ft/sec. Original depth at bridge is estimated as 7.1 ft Determine: The magnitude of the contraction scour depth.
Please pay attention to the details in bold font while solving. Thanks!
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