Four Square: Strength in Design

Unlock the secrets of structural strength with "Four Square," a fascinating film proving why a four-sided box outmuscles two- or three-sided frames, spotlighting the modern motorcar’s sturdy steel chassis. Soar with the "Clipper" boat plane as it lands in San Francisco Bay—Bay Bridge looming, "Philippines" on its nose—after a Pacific trek from Manila, then peek inside its hangar as beams and metal sheets craft its wings. Watch a disembodied arm test beams with lead weights: a one-sided bends fast, a three-sided takes triple the load, and a four-sided box beam holds 32 weights strong. From a Statue of Liberty aerial to stop-motion car frame evolution and workers nailing a box-girder bridge for a steam roller’s crossing, this reel delights engineering buffs, history fans, and design enthusiasts with timeless ingenuity.