i want to design overhead water tank. plz guide me

Storage reservoirs and overhead tank are used to store water, liquid
petroleum, petroleum products and similar liquids. The force analysis of the
reservoirs or tanks is about the same irrespective of the chemical nature of
the product. All tanks are designed as crack free structures to eliminate any
leakage.
This project gives in brief, the theory behind the design of liquid retaining
structure (Elevated circular water tank with domed roof and conical base)
using working stress method. Elements are design in limit state method.