GATE CE 2022: Irrigation Engineering

The shape of elementary profile of dam is

A concrete dam having width 14m and height 17.45m is constructed on a river to store water. If the compressive strength and the specific gravity of concrete is 2896 kN/m² and 2.24 respectively, then what will be the critical height of the dam? Also classify the dam based on its height.

At a certain point in the floor of weir, the uplift pressure head due to seepage is 4 .5m. If the relative density of concrete is 2.5, the minimum thickness of floor required at this point to counteract the uplift pressure is? Use Bligh’s theory.

The following figure shows the section of hydraulic structure formed on sand. Calculate the value of average hydraulic gradient.

Which of the following are the objectives for river training?

1) High flood discharge may pass safely and quickly through the reach

2) To make the river course stable and reduce bank erosion to minimum

3) To check flow through canal

4) To provide a sufficient draft for navigation as well as good course for it

A lined canal with trapezoidal cross section has 5m bed width 2.5 m depth and 1.5 H: 1V side slope, longitudinal bed slope of canal is 1 in 1000 and Manning’s coefficient is 0.016.Determine the discharge flowing in the canal in m³/sec.