In the case of severe acute aortic insufficiency, all individuals should undergo surgery, if there are no absolute contraindications (for surgery). Individuals with bacteremia with aortic valve endocarditis should not wait for treatment with antibiotics to take effect, given the high mortality associated with the acute AI.
Where the ground rod is located far from the main electrical panel, thicker No. 3 wire may be required. In areas where codes require two ground rods because of high electrical resistance in the soil, the rods must be spaced at least 6 feet apart and interconnected by a buried jumper wire.
The center spacing determines how far apart your posts are set from each other on the sidewall. If the barn is to be built in area that typically receives snow, we highly recommend 10' foot center. A 12' foot center is desirable when you need to have wider openings or roll-up doors on the side of the structure. This is useful for structures that may be used for horse stables, or a car garage with side entry.