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Manufacture
Polygal PCSS is custom manufactured in a
continuous extrusion process in widths up to 82" (2 meters). Stock
widths are 48" and 72", with lengths limited only by shipping
constraints.
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Fabrication
Polygal PCSS can be easily drilled, cut,
punched, sheared and bent using simple hand tools or sheet metal
fabricating equipment. A razor knife can be used to cut most
thicknesses. for heavier gauges, a hand held circular saw with fine
teeth is recommended. chips and dust can be removed from the
cellular structure with compressed air. When drilling holes it is
necessary to allow for thermal expansion. Holes should be at least 1
1/2" from the edge of the sheet.
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Design
Polygal
PCSS is an engineered plastic. Specification of design criteria, the
design of supporting structures and attachment of Polygal PCSS to a
structure should be determined by an engineer. Polgal can provide
design charts and prepare computer analysis of typical applications.
Contact Polygal USA for additional
information.
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Impact Resistance
Polygal PCCS withstands the impact of 16 lbs.
dropped 25 feet without breakage. Exceeds Gardener Falling Dart
Impact Test limits. Exceeds ASTM E822.87 Hail Impact Test
requirements. Impact Tests: Falling Dart, 220 ft-lb (1/2"
radius tip): no rupture. Air Cannon, 100ft-lb (1 1/2 diam tip at 95
mph): no penetration.
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Glazing Systems
Polygal may be installed in most aluminum,
polycarbonate or wood glazing systems designed for glass. Standard
metal sections can be used in various combinations.
Dry glazing systems
are especially suited for Polygal sheets. Neoprene, Silicone, EPDM
rubber or PVC gaskets of at leas 80 durometer are reccommended.
(CAUTION: Compatibility of PVC gaskets with
polycarbonate should be verified before use.)
Wet glazing systems
are suitable for Polygal sheets when thermal movement is not
expected. Polybutylene glazing filler tapes are acceptable, as are
silicone and one- or two-part polysulfide non-hardening sealants.
Amine and benzamid curing silicone sealants are not suitable for
use with Polygal sheets. Compatibility with polycarbonate should be
verified with Polygal USZ and the sealant or tape manufacturer.
(CAUTION: Wet glazing systems must be designed
and applied to accommodate thermal expansion of the glazing
material.)
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Flammability & Code Requirements
Polygal PCSS is
classified as "Light Transmitting Plastic" with performance
characteristics as follows:
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Horizontal Burn Rate:
ASTM D635, UBC
52-4 or UL 94HB. Light Transmitting Plastics are classified as
either CC-1 (extent of burn 1" or less) or CC-2 (burn rate of less
than 2.5"/minute). Polygal PCSS of 1/4" (6mm), 5/16" (8mm), 3/8"
(10mm) and 5/8" (16mm) thickness are classified CC-1.
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Smoke Density: ASTM E-84, or D-2843;
UBC 42-1 or 52-2. Codes commonly require a Smoke Density Rating of
not greater than 75 per ASTM D-2843. Polygal PCSS meets these
requirements.
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Ignition Properties:
ASTM D-1929 or
UBC 52-3. Model codes typically require Light Transmitting Plastic
to have a self-ignition temperature of 650ºF or greater. Polygal
PCSS meets this requirement with a self-ignition temperature of
986ºF. Melts at 800ºF.
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Flame Spread: ASTM E-84 or UBC 52-3.
Model building codes typically do not specify a flame spread
requirement. Values for Polygal PCSS vary with thickness and range
from 10 to 80.
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Installation Guidelines
Co-extruded UV-stabilized
surface layer must be installed to the exterior. The "Exposure Side"
is indicated on the protective film covering.
Sheets should be
installed with extruded ribs oriented vertically. Open ends should
be sealed to prevent dirt and debris from entering sheet structure.
A 5º minimum slope
is recommended.
Edge engagement or bite
should be at least 1/2" for sheet thicknesses up to 3/8" (10mm). For
5/8" (16mm) sheets, edge engagement should be 3/4".
Rabbet depth of frame is
calculated as edge engagement plus thermal expansion for the size of
sheet being used (1/8" per 3' of length or widthper 100ºFtemp.
differential).
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