In a commercial building we would like to install a concrete electrical trench duct in floor with cover, from main to new equipment (1200amps). Can we put other items like air lines ,computer lines ,data lines ,in trench also. Not able to find much in the NEC code.

Is there a danger of flooding? Most electrical designs and regulations specify so far from the ground for outlets for that reason. You should call a building inspector for clarity.

Trenches are for drainage purposes generally.