Construction Update: Weeks of 3/23/20 and 3/30/20

View a PDF version of this week's update

What is Happening

Columbia Business School

Site 7 (Western Site)

• Elevator rail installation is in progress
• Plumbing and ductwork are in progress up to the roof level
• Curtain wall installation (Wall Type-B and Wall Type-C) is in progress on levels 3 through 11
• Urban layer wall Type-A glass is in progress
• Interior wall layout and framing is in progress up to level 11
• Overhead mechanicals is ongoing

Site 6B (Eastern Site)

• Interior wall layout, framing, and overhead mechanical, electrical, and plumbing is in progress up to level 7
• Exterior east elevation metal panel framing is installed up to level 6; panel installation is in progress
• Exterior wall panels installation is in progress on levels 2 through 8
• Riser ductwork and pipe installation is ongoing
• Storm/sanitary piping installation is ongoing
• Prepping electrical and HVAC for Forum space in anticipation of the concrete pour
• Rooftop equipment picks will be complete during the week of March 23
• Elevator rail installation is in progress

Below Grade Activity / W. 131st Street Utilities

• Domestic water, sanitary, and storm-piping is ongoing at all levels
• Air handling units on Site 7 and W. 130th Street energy transfer room are being hooked up with piping and ductwork
• HVAC equipment installation in W. 130th street energy transfer room is progressing to completion
• The outdoor air riser for Site 6B is in progress
• All secondary chilled and hot water piping are in progress
• Fan coil units and package air conditioning units are being installed at sub-cellar level 1
• Installation of sprinkler and fire alarm systems is in progress
• Level 1 Plaza drainage, waterproofing, and topping slab development work is ongoing
• Closing leave out masonry openings at sub-cellar level 3 in mechanical rooms and elevator machine rooms
• Masonry walls at CDS (a unit captures and treats stormwater runoff onsite before entering the city’s sewer system) platforms is ongoing
• Formwork and concrete encasing emergency power riser coming from the Studebaker building
• Paint priming masonry walls
• Foundation wall injections to mitigate water leaks
• Waterproofing inside of CDS units 4 and 5
• Stacking rails and building platforms at elevators is ongoing

W. 125th Street South Side Demolition

• Demolition of 3191 Broadway and fence relocation are complete.  Awaiting the New York City Department of Buildings (DOB) final sign-off inspection.
• The New York City DOB approved the trash enclosure demolition plans.  Awaiting the New York City DOB’s pre-demolition inspection
• Awaiting the New York City DOB approval of the demolition plans for the warehouse at 614 W. 125th Street
• Submittals for the Prentis east wall parging were returned to the demolition contractor

Please note that all activities are subject to change based on weather and other field conditions.

What to Expect

Construction Activity

• Regular weekday work hours: 7:00 a.m. to 6:00 p.m. Saturday and Sunday work hours: 7:00 a.m. to 5:00 p.m. 
• Material deliveries to site is ongoing

Temporary Traffic and Transportation Impacts

• Refer to street signage for the west side of Broadway from 129th to 130th Streets -- parking is allowed after 6:00 p.m. and on weekends
• W. 131st Street between Broadway and 12th Avenue is opened for one-way westbound traffic
• W. 130th Street between Broadway and 12th Avenue has reopened for traffic