Every estimator knows this. The specs say one thing, the plans another, the Bid Schedule a third. You find out by reading them against each other, row by row, and the question deadline lands while you're still pricing.
One case on our Try page: a rail bid, the set read against itself. Yesper found 32 discrepancies, with a pre-bid question for each. The biggest: the Bid Schedule is 5,320 LF short on signal cable, and every item is paid at plan quantity. The bungalow foundation is specified and detailed but has no pay item.
You ask before the deadline instead of pricing a guess. The gap shows up before bid day, not in a claim after award. Same for the neighbouring jobs on the Try page: a scope matrix for a bid invitation, quantities from an IFC model, a comparison of incoming tenders.
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Yesper is the AI civil engineer for construction and infrastructure. AFRY, COWI, NRC Group and other Nordic firms use it to halve the time on a study, rerun calculations in minutes, and catch errors that would otherwise slip through. Get in touch if you'd like to see what it can do for you.
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