My house was built in 1900. The porch deck and the portion of the house above it are supported by a column of bricks. My problem is, the cement between the bricks is crumbling. The bricks are still in place, but I'm nervous that the columns aren't structurally sound. Can I perhaps put a form around the columns, then fill a 2-inch or so space around the brick with new concrete? Or should I support the structure, remove the bricks, dig below the frost line and do a Sonotube column? Thanks for any advice. I like your radio show.