Indoor and outdoor radiant heating systems for floors, walls, ceiling, ramps, bridges, platforms and platform enclosures and shelters, pathway and pathway enclosures and shelters, pedestrian walkways and pedestrian walkway enclosures and shelters, driveway enclosures and shelters, and mass transit or transportation thoroughfares and mass transit or transportation thoroughfare enclosures and shelters, comprising heating wiring or coil, an outward facing surface of concrete, tile, plastic, meta...