Open top floating roof tank note the presence of the wind girder just under the open top.
Wind girder floating roof tank.
Covered internal floating roof tanks these tanks exhibit the same basic construction features as the open top floating roof tanks but with the added feature of a fixed roof at the top of the tank.
3 2 6 top stiffener and intermediate wind girder design 3 2 6 1 top stiffener top wind girder 51 3 2 6 2 intermediate wind girder 54 3 2 7 overturning stability against wind load 57 3 2 8 seismic design 60.
Floating roof tank etc.
The roof of a fixed roof tank assists in keeping the shell rigid and wind forces are transmitted to the bottom of the tank open top or external floating roof tank do not have the benefit of this.
The strengthening effects of wind girders on the anti buckling capacity of tank wall were shown in the comparison of the buckling modes and the critical loads of tanks a and b with and without wind girders.
Storage tanks basic training3 7 external loading3 7 1 primary wind girders3 7 1 1 open top and floating roof tanks open top and floating roof tanks shall be provided with a primary wind girder to maintain roundness when the tank is subjected to wind loads.