Large vertical storage tanks generally refer to storage tanks whose diameter is more than 5 meters, especially those whose maximum diameter can be up to 40m-50m and whose maximum height can be up to more than 10 meters. For the fabrication and installation of this kind of large storage tank, as it is unachievable to transport an assembled tank, field erection is the most common method. There are several erection methods for field-erected tanks, such as the traditional method, jacking method, and integral lifting after the site prefabrication.

The traditional method is erecting on a ground base of a storage tank, after one section is assembled, the scaffold tower will be added a layer as the tank increases, because of the high operation, and this method is more dangerous.