To determine the required wall thickness of pipe and tubing, apply this basic equation:T t =pd o M/2S, ... For example, -- 12 tubing has a 12/16-in. OD. Hose sizes are similarly designated, ...

In an email, Duffy said the walls of the pipe are about an inch thick. Although the anchor strike on April 1 created a deep impression in that wall, it didn’t reduce its thickness.