water final- g8

amount of water consumed by all residents

water consumption

sum of water consumption and unaccounted for water

water demand

amount of water losses thru leakages

Unaccounted for water

effective life of the project is dependent upon the size and source

design period

number of individuals of the building or area

design

population

• sum of the daily water demands in one year

• reservoir or storage tank capacity.
  

Average Day Demand

• day with the highest water demand.

• minimum pump capacity

Maximum Day Demand

• any hour of the day when the water demand is at its maximum.

• diameter of transmission and distribution mains

Maximum Hour Demand

function of population but with a minimum limit

Fire Demand

speed at which water must be delivered.

flow rate

length of time over which water must be supplied.

duration

consistency of the water supply in emergency situations

reliability

large pipes that serve as the primary distribution system

water mains