Rule #1: Always go through a lengthy and expensive design phase. There is not much for agile methods in big construction methods. I've worked on big constructi

Rule #1: Always go through a lengthy and expensive design phase. There is not much for agile methods in big construction methods. I've worked on big construction projects as architect, billion dollar projects, and many of them were in time and under budget. This was because of the new CAD planning tools I brought in. But esp. because if falling steal prices, experts in the costly parts, the foundation, earth work, no storms, no flooding,no politicians and customers changing their wishes during construction. No litigation during the process, only after. That's why they'll never build under budget in Germany. You'll always have one of these obstacles, esp. litigations by loosing bidders. And those clueless politicians.