Key legal question
Whether the subcontractor could rely on unit prices shown in work slips, measurements and estimates as contractually binding prices for extra works
Extracted holding
Yes. On the established facts, the documents recorded unit prices known to and accepted by the defendant, so the cantonal court could find an agreement on those prices.
Extracted reasoning
The complaint relied on facts not found in the judgment. The Federal Court was bound by the factual findings and could not reweigh evidence or order an expert review in a reform appeal.