IFP to remove fire sprinkler line directly underneath portion of escalator on the 2nd floor which is being removed under BLD07-00898. IFP also temporarily removing portions of sprinkler piping in the basement to accomondate the removal of floor joists. The sprinkler piping shall be reinstalled when new floor joists have been installed. Buildings fire sprinkler system shall be returned to service at end of each work shift. Building fire sprinkler system shut down shall not exceed 8 hours without approval from the fire marshal.