Stairway tread…
Monday, July 7th, 2008 by calixton…at the Downtown Berkeley BART station. Actually, this photo is from one of the landings, but the steps have this same tread. My assumption is that this alternating metal and rubber (plastic? hard-packed sand? loose-packed sand?) pattern was designed for safety and durability. Unfortunately, the pattern has a mesmerizing effect, and makes the edge of [...]
