What should be done before sampling is divided from full test sections during density testing?

Before sampling is divided from full test sections during density testing, it is crucial to notify the Engineer for approval. This step ensures that the sampling process is compliant with project specifications and standards. The Engineer typically has the authority to oversee the testing procedures and verify that the correct protocols are being followed. Gaining approval prior to conducting the sampling allows for any necessary adjustments to be made and ensures that the integrity of the testing process is maintained. This communication is an essential part of quality control and helps to minimize errors or discrepancies that could affect the results of the density testing.