What is a conical roof

There is a roof that covers the tower of the circular ground plan. Another option is the semi-conical roof. 

Covering conical roofs is very challenging. The design must be designed to be evenly rounded, without any sharp edges. The conical roof has a slope of more than 5 degrees. Thanks to its construction, it is weather-protected and consists of a load-bearing structure and a roof sheath. 

Conical roof is designed with regard to both dynamic and mechanical stress, wind pressure and suction. The roof must be protected from the penetration of precipitation into the roof structure.