I was just curious for supporting a beam on the first floor of a 2nd story house, which supports the 2nd story load I know you have trimmers and jack studs on the side but do you need a vertical support in the middle of the beam? Also, these trimmers have to extend all the way down to the foundation, correct? Do you just cut a hole in the floor and make sure your trimmers studs are long enough to extend all the way down to foundation?