Japan wary of revolving doors

Automatic revolving doors have become increasingly popular with Japanese architects. They help buildings efficiently regulate heat and air conditioning systems, they’re easy to operate in high rise complexes that create gusty winds, and they lend an air of technological sophistication. But these days, most of the 466 automatic revolving doors in Japan are idle. The shutdown has occurred after the death this spring of a 6 year old boy who was crushed by a 1 ton revolving door at Roppongi Hills in Tokyo, a glitzy entertainment and business complex featuring a 54 story high rise. On March …