Even more offtopic: I would be interested in how it's handled in general. So for long-running projects (10-15years)...do they redo outdated parts? Wait until the last minute and don't plan "obviously useless" parts in advance? For example big construction projects that are in a limbo for some years, have they already detailed plans entirely on outdated equipment (from security to elevators) or just kept em blank?
There's a big construction project near me where the architect was chosen 20 yers ago and now the costs explode, i was thinking whether this is a cause (outdated plans because one didn't follow through immediately).