Following the letters regarding supervision of the backfill operation prior to the Gerrards Cross collapse (NCE last week), it would be unusual for a client such as Tesco to employ a resident engineer.
Such projects are usually design and build contracts with the risk and supervision duties clearly resting with the principal contractor. The designing structural engineer may have a watching brief but on-site supervision would be regarded by the client as double expenditure.
It would be interesting to know if this is the situation on this project.
Alan Braund, firstname.lastname@example.org