See PIP VESV1002 Design and Fabrication Specification for Vessels January 2019 ASME Code Section VIII, Divisions 1 and 2
4.2.4 Wind
4.2.4.1 Unless specified otherwise, wind loads shall be determined in accordance with ASCE 7 design criteria using input data specified by the Purchaser.
4.2.4.2 The maximum allowable deflection at the top tangent line of a vessel in the corroded condition shall not be greater than 6 inches per 100 feet (150 mm per 30 m) of vessel height.
4.2.4.3 Projected Area
1. The projected area of vessel accessories such as platforms, ladders, piping and other equipment attached to the vessel shall be considered in the wind load calculation.
2. If spoilers are to be added to a vessel, the column projected area..............
Regards