Hi

I stay in a condominium where we have 644 flats (3/4/5 bedroom), would like to know how to calculate minimum STP requirement to support our condo as per National Building Code 2005. Currently we have 400KLD STP plant (however flats occupancy is 70% only) but for last few months it not not functioning properly and daily need to pump out the sewage.

a) No of Person per flats

b) Minimum litre per person sewage contribution . Some where it says 135 litre and some there 200 litre.

Regards

Sandeep