In trapezoidal weir, sides are inclined outward with a slope of

Explanation:

• In a trapezoidal weir, the sides are inclined outward to provide structural stability and help manage flow efficiently.

• According to standard hydraulic design practices, the slope of the sides is generally taken as 1 vertical to 4 horizontal (1:4).

• This slope ensures proper flow distribution and ease of construction.

Additional Information

• A trapezoidal weir is a hydraulic structure used to measure flow in open channels and rivers. 

• It has a trapezoidal cross-section with the sides inclined outward, usually at a slope of 1 vertical to 4 horizontal.

• The trapezoidal shape helps to control the flow smoothly and reduces turbulence compared to sharp-edged weirs.

• It is commonly used for larger flow measurements because the shape allows handling a wide range of flow rates efficiently.

• The discharge over the weir is calculated using standard empirical formulas that consider the shape and dimensions.

• Trapezoidal weirs are easier to construct and maintain compared to rectangular or triangular weirs, making them practical for many irrigation and drainage applications.