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  • Users: magmath
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  1. magmath

    Transformed Shell Height and maximum length of un-stiffened shell

    Dear Experts, I am in the process of designing 15m diameter x 15m high tank. Calculated thickness for the top course is 2.7mm & the minimum requirement as per API650 is 6mm. However the construction team requested it to be 8mm so I have considered 8mm thick top course. Now the question is when...
  2. magmath

    API650 Tank Tolerance

    Dear Experts. Our client is asking for tolerances more than what is defined by API650. Much appreciated if you could advise if any one come across this and can this be achieved? 1. The maximum out-of-roundness measured 300mm above the floor to shell weld shall not exceed +/-19mm. [highlight...
  3. magmath

    Internal Stiffener for API650 Tank

    Dear Experts Is it acceptable to use internal stiffeners in API650 Storage Tanks?
  4. magmath

    API650 Acceptable Tolerance limits for Individual shell plates

    Dear Experts, I have attached a measurement taken, by dropping a plump-bob from top of the tank, on top and bottom of the individual strake to check the plumpness of individual courses. Top course is 1800mm heigh and the rest is 2400mm heigh and of 8mm thick. Tensile Strength of the plates are...
  5. magmath

    API650 Tank Tolerances

    Dear Experts. We are constructing a 28.4 mtr dia x 17.7mtr hight CS Fixed roof storage tank. Construction is done using Jacking method oe top to bottom construction. I would like to seek your advise on the Roundness Tolerance. As per API 650 for the size of this tank roundness tolerance is +/-...

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