hvac replacement

Install construction temporary sprinkler loop within construction area. No change to occupancy, use or occupancy.

Removal and installation of plumbing fixtures on 18th floor, as per plan. No Change to use, occupancy or Use.

Removal and installation of sprinkler heads on 18th floor. No change of use, egress or occupancy.

proposed ducts and piping installation for the 9th and 16th floors for existing HVAC unit, all as per plan. No change of use, occupancy or egress.

proposed modification to the 9th floor layout, all as per plan. No change of use, occupancy or use.

Modification to plumbing fixtures and proposed new sprinkler system for the 9th floor and 16 floor, all as per plan. No change to Use, occupancy or egress.

proposed ducts and piping installation for the 9th and 16th floors for existing HVAC unit, all as per plan. No change of use, occupancy or egress.

proposed modification to the 9th floor layout, all as per plan. No change of use, occupancy or use.

Modification to plumbing fixtures and proposed new sprinkler system for the 9th floor and 16 floor, all as per plan. No change to Use, occupancy or egress.

ALT-CO application filed to change the use of second and third floors, at 161 William Street, to a new educational occupancy.

General construction work and change in occupancy from classroom to offices on 1st floor.

Plumbing fixtures modification/replacement on 7th and 8th floors as per plan. No change of use, egress, or occupancy.

ALT-CO application filed to change the use of second and third floors, at 161 William Street, to a new educational occupancy.

General construction work and change in occupancy from classroom to offices on 1st floor.

Plumbing fixtures modification/replacement on 7th and 8th floors as per plan. No change of use, egress, or occupancy.

plumbing work during renovation on 6th floor

sprinkler work during renovation on 6th floor

mechanical work during renovation on 6th floor

ALT-CO application filed to change the use of second and third floors, at 161 William Street, to a new educational occupancy.

General construction work and change in occupancy from classroom to offices on 1st floor.

ALT-CO application filed to change the use of second and third floors, at 161 William Street, to a new educational occupancy.

General construction work and change in occupancy from classroom to offices on 1st floor.

Modification of existing HVAC ducts on 4th and 6th floors. No changes to use, occupancy or egress.

mechanical work during renovation on 2nd & 3rd floors

ALT-CO application filed to change the use of second and third floors, at 161 William Street, to a new educational occupancy.

interior renovation on 2nd and 3rd floors.

mechanical work during renovation on 2nd & 3rd floors

ALT-CO application filed to change the use of second and third floors, at 161 William Street, to a new educational occupancy.

interior renovation on 2nd and 3rd floors.

plumbing work during renovation on 2nd & 3rd floors

ALT-CO application filed to change the use of second and third floors, at 161 William Street, to a new educational occupancy.

sprinkler work on 1st floor

ALT-CO application filed to change the use of second and third floors, at 161 William Street, to a new educational occupancy.

General construction work and change in occupancy from classroom to offices on 1st floor.

ALT-CO application filed to change the use of second and third floors, at 161 William Street, to a new educational occupancy.

General construction work and change in occupancy from classroom to offices on 1st floor.

sprinkler work