Three professional carpenters race to frame a small structure of their own design in only four hours. Rules require an 8'x10'x8' structure with a framed window, at least two roof lines and one sheathed wall. Brandon Burge, 37, Denver, Colo., Grant Andrews, 33, Brooklyn, N.Y., and Matt Sysol, 30, Detroit, Mich., all face a number of setbacks during the speed build. One of them shoots himself in the foot with a nail gun, while another suffers debilitating hand cramps and miscalculations in measurements throw off several plans. Just when it can't get any tougher, host Chris Grundy pulls a surprise twist - their structures will have to survive a stress test. The test includes using a crane to lift and shake their structures to simulate an earthquake then drop them to the ground. Not all will survive the fall but after all is said and done, one of the carpenters is named DIY Dominator. Structures are judged by Ari Larraz, general contractor of Larraz Building Excellence, Larry Webster, editor of Popular Mechanics Magazine and Val Williams, architect with Davis Partnership.