40 and 60 pounds). To do that, Eventscape installers built a steel ladder frame
around each column and attached it to the concrete. Around the steel frame, they
then built a wooden, waffle subframe of interlocking, half-inch-thick plywood
pieces that created the geometric pattern for each column and guided the subsequent installation of the glass. Next, they used the same Computer Numerical
Control (CNC) machine that cut the waffle subframe to cut identical half-inch-thick plywood templates. These glass carrier pieces were mounted to the waffle
subframe with tenons (projecting pieces of wood) on the frame ribs that inserted
into mortises in the glass carrier panels. To create the final layer, the green glass
was glued to yet another layer of half-inch plywood using a high bond adhesive,
and the entire glass sandwich then attached to the waffle subframe. Each glass
assembly piece consists of two pieces of glass: one clear and one with a mirrored
back. The tinted epoxy used to bond them creates the luscious green color.
To make the glass panels look as seamlessly interlocking as possible, with
the smallest possible gap between pieces, Eventscape painted the plywood background frame black and then simply hooked the glass/plywood assembly onto
the support panels using tiny aluminum brackets made in-house. The end result
is a tiny quarter-inch space between the glass pieces that is almost unnoticeable.
Hartmann says none of the fabrication was “super high tech,” but that
the key to success was precision with the plywood templates, enabled by the
SOLIDWORKS software and CNC machines. The software generated a virtual
build, a process Eventscape uses in 99 percent of its projects, says Hartmann.
Staff from the company also first built a mock column in its warehouse, then
2. 3. & 4. After computer modeling
engineering details for
each column, installers
built a steel ladder frame
and waffle subframe to
assemble the glass pieces.