Apartment & Shop Building, Satara

A residential building of 24 apartments in Satara, on a plot of 1,000 sq m with 4,500 sq m of construction: four flats on each of six residential floors - three 2-BHK of 61 to 67 sq m and one 3-BHK of 84 sq m - over commercial levels of 13 shops and 4 offices, with parking in a basement. A plot this small has little room for services, so the services had to be placed on the architect's plans with care: the transformer, the diesel set, the underground tanks, the sewage plant and the dewatering sump, with a way to get water out of the basement. The work was done in three parts - the first services layout in December 2025, the revisions of January 2026, and the floor-by-floor plumbing, which was revised until June 2026.

Electrical: the load of the apartments, common lighting, two lifts, ventilation, pressurization, plumbing pumps and charging for 20% of the 24 car bays totals 251 kW, 118 kW after diversity, 132 kVA and 158 kVA with a 20% margin, so a 200 kVA oil-filled indoor transformer was chosen; the shops and offices are worked out on their own sheet at 151.5 kW. A 200 kVA diesel set carries the common services. Water: for 120 residents at 135 litres a head, the demand is 16.2 kLD, and 8.7 kLD for the commercial levels, giving a 20 kLD sewage plant (14.6 kLD of sewage), underground storage of 21 kL domestic, 7 kL raw and 5 kL drinking water for the apartments and 18 kL for the commercial floors, and overhead tanks of 14 kL domestic and 3 kL drinking water with a 25 kL fire tank. Basement: a storm-water sump of 3.24 x 2.72 x 1.5 m with a duplex submersible pump (one working, one standby) and a 65 mm UPVC pumping line to the ground floor, collection trenches under perforated gratings, and a sub-soil drain of 110 and 160 mm perforated HDPE pipes wrapped in geotextile under the raft, draining to a sump and then to the nala. Layouts: the plumbing was drawn on 14 sheets - the lower ground and upper ground diversions, every floor with hot water supply and floor traps, the commercial levels and the terrace with the fire booster - and the services on eight sheets with the tank and septic-tank locations.