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Thank you mindaugas for your reply. i have already done that the compression area is not the issue . its enough i am still having the same error.

hello guys i was going through calculations report (TANK hexagon) for storage tank having small internal pressure and found some discrepancy. Mw (overturning moment about the shell-to-bottom joint from horizontal plus vertical wind pressure) mentioned in formulas of F4.2 and 5.11.2.1 are...

Thank you @JStephen for your response moments for 5.11.2.1 are as follows all conditions along with sliding are ok Mw = 136013 Nm MPi= 33674 Nm MDL =157834 Nm MDLR =115810 Nm Mf =275181 Nm MWs =60794 Nm as per 5.11.2.1 no anchors were required. below are the tanks complete calculations...

Thank you Geoff13 for your response. Roof corossion allowance is 3mm. I posted here may be someone else have also encountered the same problem. May be in the new version they have fixed the issue. As per my understanding i dont see the need for performing Annex F calculations as the pressure...

Hello i am using TANK software by heaxagon (formerly intergraph TANK) for calculation of API 650 Tanks. tank is 7m diameter and 7.2 meter height. self supported cone roof with internal pressure of 0.25Kpa. in the roof calculation it is giving warning that "design pressure is greater than Pmax "...

HELLO GUYS I am new to storage tank design need some clarification regarding test pressure. in section F4.4 test procedure is mentioned . There is also F8.3 for mechanically anchored tanks. my question is when to use which one? i am having situation in which anchors are required due to wind...

Thank you Geoff13 and JStephen for your response.

Hello guys i have a question regarding compression area. as per Annex F 2.2 for self supporting roof the compression area shall not be less than 5.10.5 or 5.10.6. My question is if we calculate area as per 5.10.5 then we should not be calculating it using F.5.1 am i right? suppose i have self...

i have gone through ug-84 again but could not find any reference for test specimen direction . It just mention ASTM A370 which says "Test location and orientation should be addressed by the specification. If not specified, for wrought products, the test location shall be the same as that for the...

can somone please clarify about the impact energy values mentioned in ug-84 (Figure 84.1) . These average values are for longitudinal direction or transverse direction. ?

I was going through ASME section viii div2. I was looking for information about lethal service in div2 but i couldn't find anything there. As in division 1 it is explicitly mentioned in UW-2(a) what is meant by lethal service. Is there any information/requirement about lethal service in division 2?

Thank you all for your help.

@TGS4 Can you please share your feedback about it which skirt to head configuratiin shall be used when?

Hello I want to know when to use which kind of attachment. Skirt can be attached(welded) to the vessel in the followings ways. 1. Skirt can be welded directly to the bottom of the head. 2. Skirt can be attached to the inside diameter of the shell, upto the tangent line. 3.Skirt can be attached...