The 24′ height and clear base diameter, stitched upper two-thirds, and independently flexible lower thirds follow John Hilmes’s description. Each airbeam foot has a D-ring and carabiner connected to a ground skirt beneath the bouncy floor. The skirt extends 2′ beyond the floor perimeter, for a 28′ overall diameter. Separate 2″ ground-anchor D-rings project beyond the skirt fabric; large washers and lag bolts secure them to the playa with 16″ embedment. *Provisional spacing, based on John Hilmes’s recollection: one ground anchor every three airbeams, giving 14 anchors for the 42-beam model. The Ground anchor view shows a typical connection; restraint transfers through the skirt from these attachment locations. Washer diameter, bolt diameter, and soil holding capacity are unspecified.
42 airbeams follow the published 2018 account. A centered 20.7′ inner waist and 24′ top opening are estimated. The floor has two separate tumbletrack components manufactured in China, per John Hilmes’s description: a 24′ outer / 8′ inner diameter ring (8′ band) and a movable 8′ disk. The disk can fit in the opening or rest on the ring. Six blowers sit inside six evenly spaced airbeam bases, each with an exterior-facing intake. Remote mode places each blower 20′ from its base port, with a straight tube projecting perpendicularly outward from the airbeam base. A white fur rug is optional. Floor thickness is estimated at 12″ per component; stiffness, skirt compliance, connector size, rug coverage, and fabric details are illustrative. The movable disk stays level; tipping and rug dynamics are not simulated.
Gravity, compliant beam constraints, pressure-dependent bending resistance, pressure-assisted upright recovery, ground friction, skirt attachment constraints, and local neighboring-beam contacts are simulated. Both floor components carry independent damped waves. Optional balls and lightweight balloons respond to floor clicks with illustrative bounce and drag; they are interaction props, not part of the measured structure. Upright recovery is a damped approximation tied to the anchored skirt; manual upward pulls help the shape align and stabilize without resetting it. This is a visual physics approximation, not structural analysis or a gas-flow simulation. Major folds and full self-collision are not modeled.
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