Mayan ruins in Toronto? Your geography is as poor as your engineering. Any contingency on a project in the last 5 years would have been used simply because of the unusually high 10% inflation rate that has occured in the construction sector.
I have absolutely no comprehension why you want to create havoc by underfunding a project. Rather than keep on making the same ignorant statements, that only serve to devalue anything sensible you might say, perhaps you should educate yourself on how these projects are done.
Ninja turtles should have been found when studying local threatened species during the Spadina EA and probably won't pose a problem but Mayan ruins are trickier to uncover...that's what the $380M engineering and geotechnical budget is for.
You're dense so I'll say this simply. How much contingency has been added to the Yonge extension or the Transit City projects? How much contingency is built into the Spadina budget before the extra 26% was added? Do you have a shred of knowledge about what actually ends up getting spent on two projects when they have very different contingency allowances?
Whatever padding exists in other projects is not listed as a separate budget item, so the 'take the cost of one project and multiply it by Xkm to estimate other projects' is rarely a useful way to go about this...Spadina includes a 26% contingency that may not be present in other projects, Sheppard included two terminus stations in only 6km, Yonge has stuff like Steeles station with its three ramps requiring tens of millions of dollars of property acquisitions. If people are going to repeatedly post dozens of pages of posts comparing the costs of one project to another, they should make some small effort to shed the potential anomalies and compare factual and realistic things to one another. So, yes, subtract what may not be present in every project...if 26% contingency (edit - or, double inflation) is not standard, don't include 26%, if the DRL won't have stations with 25 bus bays, don't include them, etc. It makes a huge difference, particularly when we have politicians running around screaming about how expensive subways are...they're using these inaccurate estimates instead of something more reasonable.
Of these two viewpoints, I would have to agree with the former. I work in construction, and have found that whether the job is public or private, and whether contingencies are present in the budget or not, there will almost always be unavoidable extra costs to the contract. Real problems arise when reasonable contingencies are not factored into a construction budge. This mistake can either cause the project to grind to a halt, be completed at lower standards, or destroy long term capital plans.
My bone to pick with the TTC has to do with the scale of subway stations that it seems to require. I'd like to see the TTC do away with oversized underground bus terminals and international design competitions for suburban subway stations. Intermediate concourse levels should also be removed, so you either pay your fare at street level (Summerhill Station), or track level like many stations in New York. Implementing these changes could trim construction budgets by hundreds of millions of dollars.
Again, this assumes that zero padding of any sort has already been built into the Spadina budget before the blanket extra 26%. There's room to cut from the Spadina budget before a separate and massive contingency component, just as there will be with the Yonge extension and as there was with Sheppard, but there isn't an ounce of incentive to keep the scale reasonable when at the outset they're prepared to spend an extra half billion dollars.
Note that you and drum quoted me saying "don't budget for as much contingency," not "don't budget for any." I said slash Spadina's separate contingency when comparing various project estimates because we don't know how much contingency has been added to each of them. The Yonge subway extension folks, for instance, are hoping for miracles so that whatever contingency has been added there (and does anyone know what that amount is?) won't need to be spent - they're not going to be a bit proactive and, say, reduce the size of the ridiculously overbuilt Steeles station.