I had trouble following your method because of your wording, however, take your qa equation and break it apart.
qa=8N[(B+0.305)/B]^2(Fd) can also be expressed as qa=8N[((B/B)+(0.305/B))]^2(Fd)
You are saying that when you increase b your qa goes down well look at what happens as your B goes...
I am attempting to determine the corrosivity of a soil on a steel pipe and am having trouble finding anything that can give me a straight forward answer such as moderately susceptible or significantly susceptible. I have resistivity and pH so I think I am making this a harder thing then it...
