I have an old 1 story motel that I am gutting and turning into a Martial Arts School. The building is 120' long and 16' deep, and is constructed out of concrete blocks. I assumed there wouldn't be a beam running down the center since it's only 16' wide - I was wrong. It's not technically a beam-beam, they simply butted four 2x4's together and just followed that all the way down the building. Right now there are 8 different rooms so there are 7 walls that are helping support this beam. Would it be wise to place a supporter where each wall was, or is that not necessary? I really hate to put up all these supports because it's right in the middle of all my mat space. Any help would be appreciated, I'm on a super tight budget and can't afford to get someone in to look at it.