Rainwater Control in Buildings

This book deals with the science of ama-jimai. “Ａma-jimai”, a Japanese word which literally means “putting rainwater in order”, is a traditional terminology in architecture used for the concept of excluding rain from buildings not totally relying on waterproofing techniques. The basic idea is to deflecting rainwater from the surface of the building as much as possible, and control the flow of rainwater on the surface and within the building fabric so as not to migrate towards adverse direction and quickly drain it away.