I’ve met a lot of people over the years while working in the utility industry. One of those people is in management with a respected manufacturer of aerial devices. Back when OSHA published 29 CFR 1926 Subpart CC, “Cranes and Derricks in Construction,” he and I and a few others were discussing how a utility operation could best comply with some of the standard’s requirements. The OSHA rules were formed with the perspective of typical construction sites in mind. In particular, we discussed the rule’s expectation that the site’s general manager will tell the crane operator about underground obstructions that might collapse and cause a crane to become unstable. It’s obvious that a crane operator setting structures on a right-of-way doesn’t have that luxury, so we were thinking about things we could do. The discussion landed on auxiliary outrigger pads. At the time, my friend from the aerial device company had this to say: “We have occasionally been sued by folks who turned over one of our cranes or aerial devices, but we have never been sued by anyone who had set up on auxiliary pads.”
I don’t know if that’s still the case with that company, but at the time I began to research why auxiliary pads appeared to be an important part of stable setup for aerial devices. Basically, it’s because sometimes even a few square inches of additional pad dimension can increase ground support by tons per square foot. When it comes to the four-point support of an aerial device that weighs in at tons, tons-per-square-foot increases are a good thing.