Question

Which of the following statements are correct?

• A. Abutments are the sides of the valley supporting the dam structure
• B. Spillways can control the release of water from the reservoir
• C. The toe of the dam is the upstream edge of the base of the dam structure
• D. Galleries serve as passages through the dam

Answer 1

The Correct Option is A, B, D

To determine which statements are correct, let's evaluate each of them individually:

1. Abutments are the sides of the valley supporting the dam structure: This statement is correct. In dam construction, abutments are the parts of the dam that contact and support the adjacent valley or hill slopes. They are crucial for providing stability to the dam structure.
2. Spillways can control the release of water from the reservoir: This statement is correct. Spillways are structures constructed in dams that allow for the controlled release of excess water from the reservoir. They ensure that the water level in the reservoir does not exceed the design limits, thus preventing potential flooding or overflow scenarios.
3. The toe of the dam is the upstream edge of the base of the dam structure: This statement is incorrect. The 'toe' of a dam refers to the lowest point or bottom edge of the dam on the downstream side, not the upstream edge. The upstream edge of the dam is generally referred to as the 'heel.'
4. Galleries serve as passages through the dam: This statement is correct. Galleries are horizontal or near-horizontal openings within a dam that provide access across or through the structure. They are used for inspection, drainage, or hosting instrumentation equipment inside the dam.

Based on this analysis, the correct statements are: Abutments are the sides of the valley supporting the dam structure, Spillways can control the release of water from the reservoir, and Galleries serve as passages through the dam.