by Jack Welch In construction-industry parlance, homebuilder/remodeler Ben Tyler is an “OJT man,” meaning he didn’t develop his knowledge and skills via trade school or college architectural courses but through hardhanded on-the-job training. As a 23-year-old in the early ’80s with a Vanderbilt degree in business administration, he strapped on a tool pouch, picked up a circular saw and “started cuttin’ boards,” recalls veteran remodeler J.R. Vaughn, who groomed the budding ca