CRICKET COMMUNICATIONS - To install a preaction sprinkler system in the new control, switch, power, transmission, and shipping/receiving rooms. The system will include a new, 4", Reliable Model B, single interlock, preaction valve fed from a new connection to an existing 3" wet sprinkler feed. The fire alarm plans for the required detection/release system are to be submitted separately under a Fire Alarm Permit. Plans also include disconnecting gridded branch mains to take the wet sprinklers out of service, over the preaction protected area, and installing a new 3" wet sprinkler feed main to re-connect the remaining gridded branch lines.