Pipeline Engineering — Winter 2022

What is rising main? How the most economical diameter for the rising main can be calculated?

Explain how you will calculate the design discharge for water distribution system of a town.

Enlist different types of pipes that can be used for water distribution. State the advantages and disadvantages of cast iron pipe.

Differentiate between minor and major losses occurring in the pipe network.

Apipe 350 mm in diameter and 100 m long conveys water at a velocity of 2.0 m/s. Find the head lost due to friction using Darcy-Wiesbach equation. Take coefficient of friction as 0.005. Also find out the power required to maintain the flow.

What is corrosion? State the factors affecting rate of corrosion? Explain in brief any two methods used for control of corrosion.

Why valves are needed in distribution system? Explain any four types of valves with its function.

Why rehabilitation of pipeline is needed?

Enlist different techniques utilized for determination of leaks in the water supply pipes.

Explain different techniques used for analysis of a pipe network

Explain how a new pipeline is tested for leakage and pressure.

Determine the thickness of a 400 mm outer diameter pipe using the given data: Design pressure =16 kg/cm2 Allowable stress =200 kg/cm2 Corrosion allowance =1.7 mm.

Enlist different types of joints used in water pipelines. Explain with near sketch the joint which is mostly commonly used for a cast iron pipes.

What is water audit? Why it is needed?

Enlist different methods of population forecasting? Explain the method which is most suitable for a rapidly developing town/city.

Explain the procedure to be followed for laying of water supply lines.

Differentiate between an orificemeter and a venturimeter.

Explain miter bend with a neat sketch.

Explain different leak detection techniques utilized in a water supply pipes.1

Differentiate between bend and elbow.

An orifice is to be provided in the side of the tank. The head of the water in the tank is 12 m. If the discharge required is 0.12 m3/sec find the diameter of the orifice required. Take Cd=0.62.

Explain mass curve method for determination of the balancing storage required in an elevated service reservoir.

What is thrust block? Where it is provided in the pipelines

Enlist different types of welded joints used for jointing the pipes.

What is water hammer? How the effect of the water hammer on the pipe network can be minimized?