(b) – Name at least four (04) components of “Sanitary Drainage System” and describe the role of each component which helps for smooth functioning of a drainage system.

(c) – A two storied house is supplied with water from the city main supply line and the distribution is through an overhead tank located on the roof top. Draw a neat sketch of the supply and distribution and name the components. Select two components and describe their functions.

(d) – Explain three (03) types of hot water systems used in the construction industry. Select two of them and discuss the advantages and disadvantages of them.