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 is the first step. It involves determining the quantities of water that the structure must handle. For example, calculating the III. Design runoff rate (or design flood) that a spillway or culvert must pass.
- B. Hydraulic design: Once the design flow rate is known, this step involves determining the geometry and IV. Dimensions of structure required to convey that flow safely and efficiently (e.g., the width of a weir, the diameter of a pipe).
- C. Structural design: After the dimensions are set, this step involves analyzing the forces (hydrostatic pressure, self-weight, etc.) acting on the structure and ensuring the I. Stability of structure by choosing appropriate materials and reinforcement.
- D. Flood routing: This is a hydrological procedure used to model the passage of a flood wave through a reservoir or river reach. It is fundamentally based on 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).