Polyurethane fabrics can be manufactured in different thicknesses, depending on their intended use. For example, fabric used in diapers may be thinner than fabrics used for camping gear. Polyurethane fabrics are manufactured to feature a variety of characteristics. In situations where fuel contact is likely, the fabric can be made fire-retardant.
Oldest Wooden Building in the World. World's Oldest Wooden Building, is a five-story pagoda, part of HÅryÅ«-ji (Meaning: Temple of the Flourishing Law) Buddhist temple complex in Ikaruga, Nara Prefecture, Japan. The temple complex was completed in 607 AD.
The world's oldest dams still in use . The concept of building dams is as old as early human civilisation. While most of the modern dams are built for hydro-power generation, ancient dams were built to prevent flooding and provide water for irrigation. Water-technology.com profiles the world's top 10 oldest dams still in use. Quatinah Barrage / Lake Homs Dam, Syria The Quatinah Barrage or Lake Homs Dam, located in Syria, is the oldest operational dam in the world.