Web Exclusive | February 2015
World’s thinnest steel roof
The world’s thinnest steel roof is found at two Rotterdan bus shelters designed by Dutch Studio Maxwan with concave and convex "razor-thin" rooftops reminiscent of a billowing fabric. The 5-by-10-metre canopies measure just 9.5 millimetres in thickness and provide seated shelters for 40 waiting passengers. Both canopies are raised up on four flat-steel columns. Aptly nicknamed Pillow and Hammock, one arches upwards in the centre, while the other bows downward – but both are intended to look like fabric moving in the wind. The caving helps makes the canopies structurally sound, allows for a thinner roof, and is beautiful.