ditions,” says NEC president David
Sauld. “And Lake Erie proved to be
Approximately 60 to 75 people—a
combination of glaziers and ironwork-
ers—worked daily on the project be-
tween day and night shifts, as the units
The project required extensive collaboration among the project team and could only be set between 6 p.m. and 4
occupants, as the building remained fully operational through the more than a.m. due to building occupancy.
Day workers set anchors and per-
formed prep work, and the night crew
the north and east sides span between AThUe nbliaqstu-reatedIncusrttaainlwlall system hoisted and set the units.
ﬂoor lines.“To design and install those,
we had some tight tolerances to stay was heavier than the typical unit NEC SMmanoyofatchtorSs caonitlriibnugte to the com-
within,” he says.
commonly installs, but perhaps the
The entire outer façade uses lam- most unique challenge was the instal- plexity and uniqueness of the Cele-
inated insulating glass units (IGU), lation method used to set the units. brezze façade retroﬁt project. But the
combining clear and low-E glasses,
with high blast capabilities.
Two sides of the building fea-
Because of the nature of the dou- one detail that is cited repeatedly by
members of the project team
as being the most impres-
The approach always had been:
How do we maintain this very
ture a graduated frit pattern on
the glass; two sides do not.
sive is that they were able to
maintain business as usual
within the building.
We built out a variety of
IGU makeups, trying to get rid valuable asset in full occupancy
Occupant activity re-
mained normal due to the
among the various players in
the project,and more impor-
Robert P. Theel, GSA atanntstlyw,ewreitdhisthrueptteendaantt.tiTmenes-
of the greenness in the glass,”
says Young.“Between the low-E
coating and mixing that with
clear glass, we got to a formula
NEC began its portion of
and operation, for blast mitigation
and greater energy efﬁciency?’
the work on the outer curtainwall in ble-wall, the glaziers couldn’t set the but worked cooperatively with the
June of 2013. This was after install- lites from the inside. The project team project team throughout the half-de-
ing the glazing on the inner wall in designed a custom hoist and used a cade span of work.
late 2012-early 2013.
The old windows on the original from the outside.
façade were replaced with 255,000
double-decker swing stage to install
Scheduling was critical, and the
fact that many of the ﬂoors and ofﬁce
The existing building had a track spaces required high-level security
square feet of monolithic laminated system on the roof used for window clearance posed another challenge that
glass, and NEC also installed 36,000 washing. The project team inspected had to be overcome. s
square feet of light shelves and light the rails of the rig, and a Tractel hoist,
custom-designed for the proj-
The exterior skin consists of approx- ect, was mounted to the tracks.
imately 3,600 units. The typical exte- Greg Beeche Logistics designed
rior unit was nine feet, four inches by and manufactured the exterior
N i c k S t . D e n i s is the
assistant editor of USGlass
magazine. He can be reached
2 feet, six inches in size. Extrusions swing stages.
were done with Aluminum Curtainwall
“Obviously, working on the
Systems Inc. The glass was supplied by exterior of the building, we
PPG and fabricated by Tecnoglass.
were subject to windy con-
USGlass, Metal & Glazing | August 2016