IRRIGATION AND HYDRAULIC STRUCTURES (PE – IV) B.Tech. IV Year I Sem JNTUH R-18

• Explain the different types of water retaining structures and their key parameters for planning and design.

• Analyze the components of an irrigation system and its requirements for efficient water delivery.

• Calculate reservoir yield using the mass curve method and assess the impact of sedimentation on reservoir life.

• Discuss various types of dams, factors influencing their selection, and site selection criteria.

Unit II: Gravity Dams - Design and Analysis

• Identify the forces acting on a gravity dam and analyze potential causes of failure.

• Understand the principles behind elementary and practical profiles of gravity dams.

• Calculate the limiting height of a low gravity dam and apply appropriate factors of safety in design.

• Analyze the stability of gravity dams and design their foundations, drainage galleries, and inspection systems.

Unit III: Earth Dams - Design and Control Measures

• Differentiate between different types of earth dams and explain the reasons for their failure.

• Apply safety criteria for earth dam design and utilize graphical methods to assess seepage through them.

• Discuss various measures for controlling seepage in earth dams and maintaining their stability.

• Analyze the design principles of spillways, including Ogee spillways and various types of spillway gates.

• Understand the importance of energy dissipaters and stilling basins and their design considerations (Jump Height Curve, Tail Water Rating Curve, USBR and Indian types).

Unit IV: Diversion Headworks and Protection Mechanisms

• Compare and contrast different types of diversion headworks (weirs and barrages) and their components.

• Analyze the causes and prevention of failure for weirs and barrages on permeable foundations.

• Understand the role of silt ejectors, silt excluders, and creep theories in weir design.

• Calculate uplift pressure in weirs using various correction factors and design them accordingly.

• Discuss launching aprons and the principles behind exit gradient control using upstream and downstream sheet piles.

Unit V: Canal Falls, Regulation Works, and Cross Drainage

• Identify different types of canal falls and their optimal locations within an irrigation system.

• Apply design principles for Notch Falls and Sarada type falls.

• Analyze the components and design principles of canal regulation works like head regulators and canal escapes.

• Evaluate the importance of proportionality, sensitivity, setting, and flexibility in canal modules.

• Choose the suitable type of cross drainage work based on site conditions and design considerations.