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Ashishpvnit on Relocation of Intermediate Wind Girder IWG & its Section Modulous Calculation
By: ashishpvnit  Date: Tuesday, January 11, 2011 Time: 1:35:06 AM
Would like to have your suggestion for above mentioned Subject:-
Tank Details:- Dia x Ht 77.87m x 25.4m Roof Type Internal Floating Roof Outer Column Supported Fixed Cone roof Corossion Allowance 1.6 mm Provided Shell Details Course No Thk mm Width m Material 1 39 2.38 A537 CL-2 2 36.5 2.38 A537 CL-2 3 35.5 2.38 A573 Gr.70 4 29.5 2.38 A573 Gr.70 5 25.5 2.38 A573 Gr.70 6 21 2.38 A573 Gr.70 7 17 2.38 A573 Gr.70 8 13 2.38 A573 Gr.70 9 12 2.38 A36 10 11 2.38 A36 11 10 2.38 A36
Transformed width with corroded contion 10-1.6 8.4mm 7.21m Maximum Height of Unstiffened Shell with corroded contion 4.52m
Querry:- 1 Instead of putting one IWG at 7.21 / 2 3.605m from Top of Cub angle TCA.Can i put it at 3m from TCA ? 2 If Yes so for calculation of Reqd.Section Modulus D2 x Hi x Zc /17 .What value of Hi i should take? As distance above & below for IWG will be 3m & 7.21-3 4.21m respectively?