Building a Sports Facility is Not Like Building an Office
Gym floors take a hammering. A fully loaded power rack sits at around 2,000 kg on four small feet. Drop a 100 kg deadlift from lockout and the impact load spikes to three or four times that. A standard office slab (125 to 150mm, single mesh) will crack under that routine. We design gym slabs at 200 to 250mm with a double mat of rebar per IS 456, sat on 50mm high-density rubber underlayment to soak up the shock. Pools are a different beast entirely. You are designing a tank that holds 200 cubic metres of water sitting on Bangalore's shallow water table. That means M30 waterproof concrete, hydrostatic uplift calculations, a filtration plant room below grade, and a day-one decision about gunite versus cast-in-place.
Most of the fitness clubs we have built sit in mixed residential pockets. HSR Sector 2, Koramangala 4th Block, Indiranagar 100ft Road, Sarjapur. BBMP holds you to 55 dB by day and 45 dB at night at the boundary. That is not negotiable. So acoustic treatment has to start at the slab, not the ceiling. Our standard stack for a weights floor: 250mm RCC, 25mm rubber underlayment, a floating 80mm screed on neoprene pads, then the epoxy or vinyl finish. Group studios get staggered-stud double-wall partitions with a 50mm air gap and Gyproc SoundBloc on each face. HVAC compressors go on spring-isolated plinths, never bolted straight to the slab. We learned that the hard way on a 2018 Koramangala job where the bass from spin class was reaching the flat above. Padel courts, which are suddenly everywhere in Bangalore, need hot-dip galvanised MS framing, 12mm toughened glass per IS 2553, and a base slab poured to the ITF 5mm flatness tolerance over 3 metres. The floodlight masts get designed to IS 875 Part 3 for wind, which in Bangalore means 39 m/s basic wind speed.
What We Actually Build
- Weights-floor slabs. 200 to 250mm RCC, double rebar mat, rubber underlay, epoxy or vinyl finish
- Swimming pools. Shotcrete or cast-in-place shells, M30 waterproof concrete, crystalline admix, filtration plant room below grade
- Squash and badminton courts. Dimensional framing to WSF standards, sprung maple substructure, Rockwool acoustic walls
- Padel courts. Galvanised steel cage, 12mm toughened glass, artificial turf with silica infill, LED masts
- Wet areas. Polyurethane or bituminous membrane, 1:80 screed falls, stainless channel drains, Kajaria anti-skid tile
- Pool dehumidification. Stainless ducting, condensate routing, plant room with chemical storage
- Steelwork for bouldering walls, suspended tracks, and cantilevered mezzanines. Detailing to IS 800
- Acoustic treatment end to end, sized against BBMP boundary limits and tested on closeout
How We Run a Sports Facility Job
We take the whole structural scope from soil investigation through envelope, then hand over to the fit-out team. On a typical build we have the pool filtration contractor, the court flooring vendor (usually Gerflor or Mondo), and the HVAC contractor on site in overlapping windows. You get one project manager who owns that coordination, not three.