Ten months ago, a group of engineers and construction leaders sat down in a conference room amid whiteboards and laptops loaded with three-dimensional software programs. They were on hand to solve a ...

They call it the “floating phase” of construction. As workers rebuild what was once KeyArena at Seattle Center, they now work beneath the 44-million-pound roof, supported by 72 temporary steel columns ...

Don’t use a carpenter’s level to establish a horizontal line when building a floating house, says Marc Even, who often has three custom homes, in various stages of completion, bobbing on the water ...