Previous year question paper for WSWE (Diploma Civil Engineering 4th)

A. WATER SUPPLY

1. Introduction : (1 Hr.)

1.1 Necessity and brief description of water supply system.

2. Quantity of Water: (6 Hrs.)

2.1 Water requirement

2.2 Rate of demand and variation in rate of demand

2.3 Per capita consumption for domestic, industrial, public and fire fighting

 uses as per BIS standards (no numerical problems)

2.4 Methods of Population Forecasting (Numerical Problems)

3. Quality of Water: (6 Hrs.)

3.1 Meaning of pure water and methods of analysis of water

3.2 Physical, Chemical and bacteriological tests and their significance

3.3 Standard of potable water as per Indian Standard

4. Water Treatment: (10 Hrs.)

**4.1 Sedimentation - purpose, types of sedimentation tanks

**4.2 Coagulation flocculation - usual coagulation and their feeding

**4.3 Filtration - significance, types of filters, their suitability

4.4 Necessity of disinfection of water, forms of chlorination, break point

 chlorine, residual chlorine, application of chlorine.

4.5 Flow diagram of different treatment units,

 functions of (i)Aeration fountain (ii) mixer (iii) flocculator, (iv)classifier,

5. Conveyance of Water: (8 Hrs.)

**5.1 Different types of pipes - cast iron, G.I.pipes and PVC and uses

5.2 Appurtenances: Sluice, Air, Reflux valve, Relief valves and Scour valve.

 Fire Hydrants, Water Meters their working & uses

5.3 Distribution Systems: Gravity, Pumping, Combined Gravity & pumping

5.4 Layout of distribution systems along with their suitability 

CCDCJuly, 2013 30

6. Building Water Supply: (4 Hrs.)

6.1 Water supply fixtures and installations and terminology related to

 plumbing

6.2 The House Water Connection

B. WASTE WATER ENGINEERING

7. Introduction: (5 Hrs.)

7.1 Purpose of sanitation

7.2 Necessity of systematic collection and disposal of waste

7.3 Definition of terms in sanitary engineering

7.4 Collection and conveyance of sewage

7.5 Conservancy and water carriage systems, their advantages and

 disadvantages

 8. Sewerage System: (10 Hrs.)

8.1 Types of sewerage systems, materials for sewers, their sizes and joints

8.2 Appurtenance: Location, function and construction features. Manholes,

 catch basin, flushing tanks, oil & grease traps, ventilating shafts etc.

9. Laying and Construction of Sewers: (6 Hrs.)

9.1 Setting out/alignment of sewers

9.2 Excavations, checking the gradient with boning rods, preparation of

 bedding, handling, jointing, testing and back filling of sewers/pipes.

10 Sewage characteristics: (6 Hrs.)

10.1 Properties of sewage and BIS standards for analysis of sewage

10.2 Physical, chemical and bacteriological parameters

11 Sewage Treatment : (12 Hrs.)

11.1 Meaning and principle of primary and secondary treatment, aerobic &

 anaerobic treatment, activated sludge process with their flow diagrams.

11.2 Introduction and uses of screens, grit chambers, detritus tanks,

 skimming tanks, plain sedimentation tanks, primary clarifiers,

 secondary clarifiers, filters, control beds, intermittent sand filters,

 trickling filters, sludge treatment and disposal, oxidation ponds

11.3 Disposal by dilution

11.4 Self purification of stream

12. Building Drainage: (6 Hrs.)

12.1 Aims of building drainage and its requirements

**12.2 Different sanitary fittings and installations

12.3 Traps, seals, causes of breaking seals

** A field visit may be planned to explain and show the relevant things.