Marshak Curtain Wall Project Update
The Curtain Wall Project has reached a stage where window washing has been scheduled. Cleaning will begin on the north-, east- and south-facing windows, and is scheduled to start on Monday, July 12, 2010. (The west windows will be scheduled at a later date.)
Workers will require access through the existing windows of all rooms. Access will be provided by a CCNY security guard, who will be required to stand by and monitor room security for the entire work shift, which spans from approximately 7:00am to 3:00pm each day.
Current estimates are that it will take one hour to clean one bay, equating to cleaning seven window bays per day on any given floor. Here is the sequence that has been planned: On day one, cleaning will begin on the thirteenth floor at the north and northeast windows (mast climbers 3, 13 and 14). On day two, cleaning will be proceed on the other end of the thirteenth floor at the south and southeast windows (mast climbers 5, 11 and 12). On day three, they will go to the twelfth floor, north/northeast end; on day four, twelfth floor, south/southeast end, and so on down the building. See the attached PDF file for a diagram that identifies the number of the mast climber nearest you.
Surfaces to be cleaned include the outside surfaces of the existing windows, the surfaces between the new curtain wall and the existing windows and the inside surfaces of the new curtain wall, both glass and aluminum. (Cleaning of the curtain wall exterior will be done at a later date.) All cleaning work will occur outside of the existing windows.
All equipment and furniture near windows used to access the bays shall be protected as needed with drop clothes, protective boards, etc., but to be on the safe side, you may want to move items out of the way the day before cleaning is scheduled for your area.
Water hoses will be brought into window bays through curtain wall leave-outs (where the mast climbers are still attached). Workers will be using water, cleaning solutions, cleaning cloths and squeegees. Water will drip down into lower bays from above, so if you have open windows, please close them to prevent infiltration of dirty water.
Be advised that the above sequence and time frame could be subject to change, given factors such as work progressing more quickly or more slowly than anticipated, work stoppages for whatever reason, etc. We will monitor work progress and notify building occupants 24 to 48 hours in advance of workers' anticipated arrival in their specific areas.
Please contact me if you have any questions or concerns about this work.
Thank you in advance for your patience and cooperation.
Science Project Manager
Division of Science, 1320 Marshak Hall
Tel: (212) 650-8305