Pension Formula Method

Dear all
please tell me the figure 70 which is divided in PF pension calculation i.e.
Pensionable salary * Pensionable service
_________________________________
70
What method or logic used by pension committe behind this

Dear friends,
In Service pension 50% is applicable for 33yrs service. In EPS-95, 2yrs bonus will be added to 20yrs & more. Accordingly for 33yrs service, pensionable service is 33+2=35. To get 50% pension in EPS-95, the dividing factor should be 70.
But in Service pension, maxim pension is restricted to 50%.
But there is no such restriction in EPS-95.
Abbas.P.S,
ITI LTD,
PALAKKAD - 678 623.
Ph. +91 9447 467 667.

Dear friends,
In Service pension 33yrs is required to get 50% pension. (This condition was prevailed at the time of introduction of EPS in 1995. Present condition I am not sure).
Those who completed 20yrs or more service in EPS are eligible to get an additional service of 2yrs. Accordingly for 33yrs, pensionable service will be 33+2=35yrs. To get 50%, 35 is to be divided by 70.
In service pension, pension is restricted to 50%. But in EPS, there is no such ceiling limit.
Abbas.P.S,
ITI LTD, PALAKKAD - 678 623.
Ph. +91 9447 467 667