Many recent trends in construction aim to improve teamwork: collaborative delivery methods, lean construction practices and virtual design and construction. But those tools and processes, in and of themselves, do not ensure excellence, says Jim Eisenhart, president of Ventura Consulting Group Inc., a Ventura, Calif-based firm that helps contractors improve their efficiency on tough projects. “You can’t contract for human performance,” he says. “Those tools make it easier to engage in real time, but [teamwork] is by no means ensured.” Eisenhart, a partnering facilitator who . . .