That is great. But isn't this more than the scientific method? It is rigor, and the capacity to look at all the factors in reality instead of cherry-picking one for a laboratory experiment.
I do agree we all could do with more rigor and also avoid cherry-picking factors to study, in any discipline.
If they didn't use sub-standard materials, there wouldn't be big repair contracts, would there? Guess who will land them.
This is par for the course in India. They siphon off taxes this way, and on environmentally-inadvisable things no less. But that is how it is structured, weak-to-non-existent urban local bodies, and tax collection and disbursement centralized like it was in the times of the colonizer. That big pot of money is intensively fought over.