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Create one continuous 12-second video, aspect ratio 16:9, inside the open ground level of a steel parking structure under construction at night. Use a calm, exacting craftsmanship mood. [00-04s] Begin with a tight 50mm lens feel, dollying slowly backward from a secured beam connection viewed through a protective welding filter. A fully protected welder advances a short, steady bead; the molten pool remains small, with realistic localized glow and sparse falling sparks. Warm task lighting grazes the steel surface. [04-08s] Continue the backward dolly past the edge of the screened welding enclosure, retaining the same focal length. Reveal bracing, baseplates, and orderly cable routing on dry concrete. The welder wears a lowered welding helmet, flame-resistant clothing, leather gloves, and safety boots; a similarly equipped fire watch monitors the protected work zone. [08-12s] Widen the composition through camera distance alone. Beyond a barrier, a crane slowly raises a braced steel member in an adjacent open bay while helmeted riggers control taglines from safe positions. Cool overhead work lights contrast with the warm welding station. Sound design: close welding fizz, ventilation hum, distant rigging creaks, and a soft crane motor.