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.
In the days of wooden ships with sails, the wind and waves could easily push them against the rocks and wreck them. And so, the need for lighthouses as warning signals arose. One of the Seven Wonders of the Ancient World was a lighthouseâthe famous Pharos of Alexandria, Egypt.It is the first one that is recorded in history and was built about 280 BC. Those records tell us that it was the tallest one ever builtâ450 ft.n the days of wooden ships with sails, the wind and waves could easily push them against the rocks and wreck them. And so, the need for lighthouses as warning signals arose. One of the Seven Wonders of the Ancient World was a lighthouseâthe famous Pharos of Alexandria, Egypt.