I would suggest to review the work distribution with the other trades. Very often the spec books will indicate work to be done, but does not nessasarily mean that you will perform it. The engineer just wants it completed and doesn't care whom actually does the work. For example, spec books very often have motor control centers specified in the Division 15 (Mechnical), but get rigged, installed and wired by the electrical. On the other hand, there are be wiring specifications in Division 16 (Electrical), but the HVAC control contractor might be installing his own control wiring, or you might be expected to do it.
Just Check it out.
