Agricultural Engineering Practice Exam

Question: 1 / 400

Why is the base width of a trapezoidal channel significant in design?

It affects the stability of the channel

The base width of a trapezoidal channel plays a crucial role in the structural integrity and stability of the channel. A wider base can help distribute the weight of the soil and water more effectively, reducing the likelihood of erosion or collapse. It is essential for preventing excessive lateral pressure on the sides of the channel, which can occur under certain flow conditions. A stable channel is not only vital for maintaining the intended water flow but also for safeguarding the surrounding environment and preventing damage to infrastructure.

In contrast, while the base width may have some influence on water speed, water retention capacity, and agricultural yield, these factors are more directly affected by other design elements like channel geometry, the flow rate, and the surrounding soil characteristics. Thus, the significance of base width primarily lies in its impact on the channel's stability.

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It influences water speed

It determines water retention capacity

It impacts agricultural yield

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