Palram PALGAR - Manual (Page 29)

PALSUN® PALGARD™
Glazing Guide
29
Figure 26. Existing Flat Multi-Wall Aluminum
Profile Glazing System with Steel Supporting
Sub-Structure
Figure 25a,b. Existing Curtain Wall/Skylight
Aluminum Systems & PALSUN Glazing.
a. A Typical System of German Origin.
b. A Typical System of Israeli Origin.
d) Existing Glass Oriented Curtain-Wall Profile Systems in PALSUN Glazing:
Existing high-end glass oriented designated systems for public or office buildings, for
PALSUN glazing of
up to 1200mm, due to limited (up to 20mm) rabbet depth. Suitable profile series, mostly in aluminum but
some in stainless steel, are available from many suppliers all over the world. Only systems of 55mm
profile width and more, with at least 20mm rabbet depth, should be considered.
Depicted below are two typical aluminum curtain wall systems, from two separate sources, with identical
width and similar details. There are differences though in rabbet depth as the German system (a) gets
better thermal insulation (thermal bridge), as it is intended for a much colder climate.
Existing heavier duty systems, upgraded versions of the formerly mentioned series, are wider by design
(about 70mm), but their rabbet depth is enlarged only by 3-4mm, so the wider profiles can sustain wider
PALSUN glazing but less than might be anticipated by the larger profiles.
e) Existing Multi-Wall Oriented Systems:
Multi-wall oriented aluminum profile systems prepared
for improved quality flat polycarbonate multi-wall sheets,
may suit PALSUN glazing too. However these systems offer
relatively light gauge profiles. They could be used only in
light to medium duty requirements, as they need
additional supportive sub-structure under or behind to
withstand higher loads.
These systems should not be selected for use in
installations with loads higher than 150kg/m
2 or where
glazing thicker than 6mm is required. The profiles would
warp under the heavy loads or by the forceful pressure of
the heavy glazing edges.
In most cases these systems suit both vertical or sloped (leveled)
installations, as a part of the existing profiles is prepared with
internal drainage channels and even condensation water collecting
gutters.
Steel Supporting
Sub-Structure
b
a