MECHANICAL SERVICES DESIGN OF AN ESTATE WITH A SINGLE OVERHEAD WATER SUPPLY

Abstract

This work focused on mechanical services design of an estate with a single overhead water supply. The residential development has twenty dwelling units and consists of two housing prototype of a four unit five bedroom detached house with one room servant’s quarter and sixteen units four bedroom semi-detached house with one room servant’s quarters. The estate shall be provided with a swimming pool, a gymnasium room, store, shops, car park, and children playing ground. The total floor area of the estate is 8512m2. The mechanical services covered in this work include, air-conditioning, ventilation and extraction system, hot and cold water distribution, water storage tanks, water transfer pump set, borehole and water treatment plant, sanitary plumbing, soil and waste disposal, sewage treatment plant and firefighting. The total cooling load estimated for the estate is 35.7kW and water storage requirement was 44928litres and the estimated BOD (Biochemical Oxygen Demand) and flow rate for the sewage treatment plants are 14.1kg/BOD/day and 112.3m3/day.