API Std 650 floating-roof tanks procedure for designing tank walls

Steel storage tanks Cover Plates MaterialASTM A516 Gr 55 Carbon Steel Pressure Vessel Plates for API Std 650 floating-roof tanksASTM A285, Pressure Vessel Plates for Low- and Intermediate-Tensile StrengthASTM A307 Carbon Steel Bolts and StudsASTM A320 Alloy Steel Bolting Materials for Low-Temperature ServiceASTM A333 Seamless and Welded Steel Pipe for Low-Temperature ServiceASTM A334 Seamless and Welded Carbon and Alloy-Steel Tubes for Low-Temperature ServiceASTM A350 Forgings, Carbon and Low-Alloy Steel for Piping ComponentsASTM A351 Castings for Pressure-Containing PartsASTM A353 Pressure Vessel Plates, Alloy Steel

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Lateral braces between outer bay rafters must be provided if asymmetrical structural shapes are used for rafters and if the API Std 650 floating-roof tanks API 650 tanks are located in areas subject to earthquakes. The bracing must be adequately sized for the seismic zone specified.