Interpretation of data, contractual aspects

In the blue, red and yellow book, the Contractor shall be responsible for the interpretation of the data provided by the Employer, but is not responsible for certain unforeseeable risks or conditions. 

To further define what is reasonably foreseeable, particular conditions of contract are often added (for instance The Contractor s price is based on the assumption that the SPT value of the sands to be dredged is lower than 30). 

In the silver book, the Contractor is fully responsible, even for unforeseeable risks. 

An overview of the relevant clauses can be found in the table below. 

Blue book General conditions 2.3 site data 

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