Giant Cartoon Astronaut — Plaza Landmark Sculpture, Oklahoma

A six-and-a-half-metre astronaut is a piece of engineering that happens to look like a cartoon. Most of what we did on this job was work out whether it would still be standing in thirty years.

The brief

A town on a highway that once carried the whole country asked for something visible from a car at 100 km/h that would read as a landmark rather than as an advertisement. The subject was settled on quickly: a giant cartoon astronaut, waving. The only firm instruction was that it must not look like a sign.

Wind, not weight

At 6.5 m the governing load is wind, not the sculpture’s own mass. The figure is laminated at 14 mm nominal skin thickness over a galvanised armature of 114 mm tube, with the armature bonded to a cast-in base plate on eight M24 anchor bolts. The waving arm is the critical element: it presents 2.4 m² of flat surface on the end of a 3.1 m cantilever, so the shoulder was built as a closed box rather than as a shell and the arm carries a stainless steel core through its whole length. The assembly was load-tested and signed off at 45 m/s.

Reading at distance

Cartoon proportions do not scale for free. Signals that charm at 2 m disappear at 6.5 m, so the visor band is 620 mm deep, the limb ring joints are 180 mm proud and the boots were oversized by about 15% against the approved drawing. There is one accent colour, a safety orange used on four patches and on the boot soles, and it is the only colour on the piece that is neither white nor near-black.

Why not stainless

Stainless steel was considered and rejected, not on cost but on reading. At this scale a mirrored metal figure reflects the sky and the road and resolves into a grey mass from a passing car, where a painted fibreglass shell holds its shape and its colour in exactly the conditions that matter.

On the plaza

It stands on a low concrete plinth at the edge of the pull-in, angled eight degrees off the road so that the wave faces oncoming traffic. What the town did with it afterwards is in the panel above.