I was asked figure the couple moment the pole would produce at the mid span of the railing and then to check the bottom steel for a torsion affect. Is there some type of equation in the aisc that I follow. I couldn’t find much for channel shapes
I have this weather station pole that has been attached to an existing railing/stair. The railing and stringer were not initially designed to support this weather station pole. The (wind) moment produce by the post on the railing at mid span is approximately 1082 pound per feet and the total...