For a straight stream flow condition for bridge site, the value of design discharge is 650 m³ per second and the value of normal scour depth is 3.5 m. The value of constant for straight reach is 1.27. Estimate the maximum scour depth.
- A4.40 m
- B4.45 mCorrect
- C4.50 m
- D4.55 m
Solution
Concept
Maximum scour
Formula
dmax = K d
Step-by-step solution
1. 1.27 × 3.5 = 4.445 m.
Explanation
Straight reach factor.
Why the other options are wrong
Others do not follow.
Correct answer: B) 4.45 m