Acoustical Society of America
Case study

Kamaljit Kalkat meditation room, terrace level

A meditation room glazed on all four elevations had to be silent inside, with a swimming pool below it and aircraft above.

A dark blue fabric-lined enclosure with a heavy sealed window looking through into a bright white room beyond.
An acoustically lined enclosure with a sealed observation window — in box-in-box construction the inner room meets the building only where it must.

Mr Kamaljit Kalkat, former CEO of Barclays Bank India, wanted a terrace-level meditation room glazed on all four elevations and acoustically serene inside. Two adjacencies made that difficult: an existing swimming pool directly beneath the intended wall line, and the ambient noise contour of IGI Airport's flight paths overhead.

Why a partition would not do

Conventional partition-based isolation was structurally unviable given the fully glazed brief — there was no opaque surface left to put mass into. Nor was the problem only airborne: the pool's plant and the structural continuity beneath the wall line gave vibration a direct route into the room, and a heavier wall would have carried it rather than stopped it.

The construction

The answer was a box-in-box, discontinuous-construction methodology — the principle behind world-class recording studios and critical-listening rooms, in which the entire habitable volume is vibration-isolated from the host structure. The same discontinuous-construction principles are addressed under ASTM E1007 for structure-borne sound testing.

  • A decoupled floor slab, structurally separate from the terrace it stands on.
  • Wall systems mounted on specially engineered spring and neoprene isolation hangers, to eliminate structure-borne transmission through the building's primary slab.
  • The vibrational bridge from the swimming pool's plant and structural continuity severed rather than damped.
  • Glazing developed jointly with GX Glass-AIS engineering, tuned against airborne aircraft-noise ingress.

The glazing specification mattered as much for what it did not do: the room exists to be transparent, so the assembly had to earn its performance through thickness and cavity rather than through anything that would read visually. A box-in-box room is also only as good as the gaps it leaves — every service entering the volume, and every point where the inner shell comes close to the outer, has to be detailed so that the separation is never quietly bridged on site.

The result

An all-glass pavilion, genuinely silent inside, within an aviation noise corridor.

The case is a useful reference for meditation, wellness and mindfulness rooms generally. A room whose whole purpose is quiet has no margin for a flanking path, and once the brief removes solid walls from the design the only remaining answer is to isolate the whole volume. That is studio engineering applied to a private terrace, and it needs the same discipline — and the same design work up front — as a professional recording environment.

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