3.2 Spider Glass Wall. A system
similar to the foregoing, where the bolt assembly contains
a ball
joint lodged inside the thickness of the glass. This enables the
glass to move independently from the structure avoiding any
twisting
or bending of the glass.(P4)
3.3 Austvision En-trapped Laminated
Glass Wall (P5). This system applies the use of tempered laminated
glass, the interior pane only being drilled with countersunk holes
at several places near the edges. Into this hole an articulated
swivel head threaded bolt is introduced which allows the glass
to be bolted to the Spider and inturn bolted to the metal support
of
the main structure of the building.
3.4 The AGA Austvision En-trap
Laminated Glass System is also suitable for insulating glazing,
in which case the laminated pane without holes faces the outside
of the building and the inner panel with holes is bolted to
the
supporting member of the building. (P5)
P5
3.5 Suspended Frameless Glass Assembly Glazing
(P6). This system is mainly used for high glass walls and the
system
is suspended to accommodate the building movements, in particular
for earthquakes.
Monolithic or double glazed insulated glass units are suspended
at the top edge and spider fitting point links fix the glass panels
all the way down to the floor.
Type of stiffeners in order to resist the wind pressure, the glass
panels must be stiffened along their vertical edges by a perpendicular
glass mullion in thick tempered glass.
Suspended by perpendicular or horizontal tension truss unit.
P6
IMPORTANT NOTE
All the above mentioned techniques obviously have specific
requirements and specification compliance as to the
glass itself, its support,
fittings, tightness of the façade system, installation and
maintenance. It is therefore essential that all the parties concerned
– i.e. architect, contractor, glass manufacturer, fittings
manufacturer and sealant producer work in very close co-operation
from the very
start of the project.
