The ordinates of a 1-hour unit hydrograph (UH) are given below.
| Time (hours) | 0 | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|---|
| Ordinates of 1-hour UH (m3/s) | 0 | 13 | 50 | 80 | 95 | 85 |
| Time (hours) | 6 | 7 | 8 | 9 | 10 | 11 |
|---|---|---|---|---|---|---|
| Ordinates of 1-hour UH (m3/s) | 55 | 35 | 15 | 10 | 3 | 0 |
These ordinates are used to derive a 3-hour UH. The peak discharge (in m3/s) for the derived 3-hour UH is ___________ (rounded off to the nearest integer).
A spillway has unit discharge of 7.5 m3/s/m. The flow depth at the downstream horizontal apron is 0.5 m. The tail water depth (in meters) required to form a hydraulic jump is ___________ (rounded off to 2 decimal places).
The following figure shows the arrangement of formwork for casting a cantilever RC beam.
The correct sequence of removing the Shores/Props is:
Consider a balanced doubly-reinforced concrete section. If the material and other sectional properties remain unchanged, for which of the following cases will the section becomes under-reinforced?