Question

Match LIST I with LIST II
\[ \begin{array}{|l|l|} \hline \textbf{LIST I} & \textbf{LIST II} \\ \hline A. \ \text{Hydrologic design} & I. \ \text{Stability of structure} \\ B. \ \text{Hydraulic design} & II. \ \text{Continuity equation} \\ C. \ \text{Structural design} & III. \ \text{Design runoff rate} \\ D. \ \text{Flood routing} & IV. \ \text{Dimensions of structure} \\ \hline \end{array} \]
Choose the correct answer from the options given below:

• A. A-III, B-IV, C-I, D-II
• B. A-II, B-I, C-IV, D-III
• C. A-II, B-I, C-III, D-IV
• D. A-IV, B-IV, C-I, D-II

Hint:

The design sequence for hydraulic structures is: 1. Hydrology: How much water? (Flow Rate) 2. Hydraulics: What shape/size to handle the water? (Dimensions) 3. Structural: Is the shape/size strong enough? (Stability)

Answer 1

The Correct Option is A

Step 1: Match each design phase in LIST I with its core task in LIST II.
- A. Hydrologic design: This initial phase determines the water quantities a structure must manage, such as calculating the III. Design runoff rate (or design flood) for spillways or culverts.
- B. Hydraulic design: With the design flow rate established, this phase defines the geometry and IV. Dimensions of structure necessary for safe and efficient flow conveyance (e.g., weir width, pipe diameter).
- C. Structural design: Following dimensioning, this phase analyzes forces (hydrostatic pressure, self-weight, etc.) on the structure and ensures I. Stability of structure through material selection and reinforcement.
- D. Flood routing: This hydrological procedure models flood wave progression through reservoirs or river sections, primarily by solving the II. Continuity equation (\(I - O = \Delta S\)).
Step 2: Compile the correct pairings.
- A \(\rightarrow\) III
- B \(\rightarrow\) IV
- C \(\rightarrow\) I
- D \(\rightarrow\) II
This combination corresponds to option (A).