Saturday, August 9, 2014
Various types of Water Demands Formulae
Hi, How you doing? In our previous article 'Introduction to Water Demands', we got introduced with the various types of water demands, in this article I will post the various formulae which are used to calculate the water demands in cities of different kinds.
(4) Buston's Formula
The probability of occurrence of fire, which, in turn, depends upon the type of the city served, has been taken into consideration in developing above formula on the actual water consumption in fire fighting for Jabalpur city of India. The formula is given as:
Where, R = Recurrence interval of fire i.e., period of occurrence of fire in years, which will be different for residential, commercial and industrial cities.
(R) minimum = 1 year.
t = duration of fire in minutes,
(t)minimum = 30 minutes.