Sanitary Drainage and Venting

Question 1

6 principles of sanitary drainage and venting

Answer 1

1. each family equipped with WC, kitchen sink, lavatory, bath tub
2. adequate circulation of air with no danger of siphonage
3. vent shall be extended to outer air and installed so as to minimize clogging or return of foul air
4. no WC shall be locate d in room not properly lighted or ventilated
5. fixture directly connected to draning equipped w a water-seal trap
6. wholesome water

Question 2

Steps for water pipe sizing

Answer 2

1. starting from most remote point, determine maxmo
2. Determine allowable pressure drop in piping per 100’ length
3. Read diameter of each pipe segment.

Question 3

Steps for design of water service pipe

Answer 3

1. determine maxmo
2. determine allowable pressure drop
3. find equivalent length of pipe
4. determine diameter of water service pipe
5. check residual pressure by back calculations

Question 4

4 types of heating systems

Answer 4

1. hot water heating system (hydronic)
2. warm air heating systems
3. radiant floor/ceiling panel system
4. steam heating system

Question 5

low temperature water systems : temp, pressure and pressure difference?

Answer 5

LTW

120 °C, (180-200 F)
200 kPa (30 psig)
20 °F temperature difference

Question 6

high temperature water : temp, pressure and temp. difference

Answer 6

HTW

200°C (450F)
2MPa (300 psig)
100-150 F temperature difference