API Std 650 flat-bottom oil storage tanks height

Usually, the wind load in the API Std 650 flat-bottom oil storage tanks construction area should be considered before the tank design and construction. The wind load in the API Std 650 flat-bottom oil storage tanks construction area has an impact on the stability and economy of the API Std 650 flat-bottom oil storage tanks. In the area with large wind load, it is safe to design the tank as "squat". When calculating the wind force, the influence of the thickness of the insulation layer of the API Std 650 flat-bottom oil storage tanks, the shape of the ladder, the platform, the pipeline and the top cover must be considered.

API 620 Tank Design
The designer of these large tanks API Std 650 flat-bottom oil storage tanks shall supply the data on superimposed loadings to be assumed for the foundation design or, if there are no foundations, for direct loading on the subgrade. A slab or mat may be provided to support the superstructure and shall be considered to distribute the load more evenly over a lower natural subgrade compared with merely stripping, leveling, and rolling the existing grade.
For simple spheroids or tanks of similar design, in which the distribution of the imposed weights shifts because the liquid level in combination with the vapor pressure may change the shape of the tank, the designer shall consider the possibility of such a change.

API 650 tank has the advantages of less load on the floating plate, simple and light structure, and can save the central drainage pipe and rotating floating ladder on the API Std 650 flat-bottom oil storage tanks floating plate. The materials for easy construction and maintenance and sealing parts can avoid aging due to sunlight.