No room to stage, no room to slip.
Halden & Co. bought a corner lot in the Loop with the L tracks running along one side and two arterial streets on the others. Every beam, panel and pour had to arrive just in time — and anchor tenants had signed leases tied to a fixed occupancy date.
- 0 sq ftof on-site laydown space
- 14anchor-tenant floors pre-leased
- $1.1Mper month in lease penalties if late
The first scheme called for a cast-in-place concrete frame, which would have needed a second tower crane the site simply could not hold. Halden needed a builder that could re-plan the structure, sequence deliveries by the hour and still commit to a guaranteed maximum price before the design was complete.
We joined at schematic design, signed a $214M GMP at 60% drawings and took responsibility for city coordination with the transit authority and the Department of Transportation.
One crane, one clock.
We reorganized the job around a single tower crane and an off-site marshalling yard, with deliveries booked in 30-minute windows through a shared logistics app.
- 01
Switch the frame
A composite steel frame with a concrete core cut the crane picks per floor by 40% and let us build a floor every four working days.
- 02
Stage off site
A leased yard six miles south held steel, curtain-wall units and MEP racks, released to site only when the hook was free.
- 03
Close in early
Unitized curtain-wall panels went on three floors behind the steel, so interior trades started on level 4 while steel was still rising on level 20.