Hello all,

I am designing a storage tank with dome roof.

As per Annex F, the participating area at the junction shall exceed the required area as per F.2.

My question is, there is an another formula in clause 5.10.6.2 stats that the participating area as per F.2 shall exceed this requirement too..

Is it really required to calculate the required area twice (as per F.2 and 5.10.6.2) to make sure the junction is safe..

Or the formula in 5.10.6.2 is only for self supported dome roofs..? If so, in tank software, I specified as self supporting roof. But in the output reports, there is no such calculation??

Please clarify above points..

Appreciate your help..