Building as Weapon — Infrastructure Delivery: Water Mains + Hot Return + Drain Stack + HVAC + Floor Slab as Attack Network

The entire building as a single multi-room infrasound delivery system: cold water main (copper, 0.15 dB/m, 1480 m/s), hot water return loop, drain/soil stack (cast iron or ABS), HVAC sheet metal ductwork (20× more efficient than air), and concrete floor slab (Rayleigh wave, −3 dB per doubling). One $50 transducer at the basement injection point reaches every bathroom simultaneously. Animated particle flows per vector. Click each infrastructure element for physics, speed, loss, and stealth rating.

Scene 66 of 109 in the StopBeingParanoid interactive 3D research collection. Requires JavaScript and WebGL2 for the interactive visualisation.

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If any of this frightens you: this site documents what signal physics makes possible in a laboratory, which is not evidence about what is happening to any individual. If you feel watched, targeted or unsafe, that distress is real and treatable. Read about paranoia, mental health and how to get help, or call a free 24/7 line — 988 in the US and Canada, 116 123 in the UK and Norway, 13 11 14 in Australia, or find your country at findahelpline.com.