Calculating load for deck piers (hoping to use helical piles)

I’m building a deck (a 18’x31′ rectangle, with a 8’x12′ rectangle attached to it, in the shape of an L).  It’s going to be between 22″ and 30″ above ground… I’m building a deck (a 18’x31′ rectangle, with a 8’x12′ rectangle attached to it, in the shape of an L).  It’s going to be between 22″ and 30″ above ground…Read MoreGreenBuildingAdvisor