specified by the International Conference of Building Officials'
"Acceptance Criteria for Sandwich Panel Adhesive". Minimum strength shall
be:
a.
Tensile Strength of 5.2 MPa 750 psiin accordance with ASTM C 297/C
297M after two exposures to six cycles each of the aging
conditions prescribed in ASTM D 1037.
b.
Shear Strength, after exposure to five separate aging conditions
in accordance with ASTM D 1002, shall be:
(1) 3.7 MPa 540 psi at 50% relative humidity and 23
degrees C 73 degrees F.
(2) 5.5 MPa 800 psi under accelerated aging per ASTM
D 1037 at room temperature.
(3) 1.7 MPa 250 psi under accelerated aging per ASTM
D 1037 at 83 degrees C 182 degrees F.
(4) 9.7 MPa 1400 psi after 500 hour Oxygen Bomb per
ASTM D 572.
(5) 690 kPa 100 psi at 83 degrees C 182 degrees F.
2.2.4
Panel Construction
Panels shall consist of fiberglass faces laminated to an aluminum I-beam
grid core and shall deflect no more than 48 mm 1.9 inches at 147 kg per
square meter in 3 m 30 psf in 10 feet per ASTM E 72, without a supporting
frame. Quality control inspections and required testing, conducted at
least once each year, shall include manufacturing facilities, sandwich
panel components and production sandwich panels for conformance with
"Acceptance Criteria for Sandwich Panels" as regulated by the ICBO-ES or
equivalent.
2.3
THERMOPLASTIC POLYCARBONATE PANELS
The system shall be manufactured from translucent polycarbonate panels
designed for architectural applications. Panels shall consist of a
polycarbonate resin with a permanent, co-extruded, ultra-violet protective
layer; this layer shall be co-extruded by the manufacturer during the
original extrusion of the panel and shall be a permanent part of the
exterior and interior layers. Pot-applied coatings or films of dissimilar
materials are unacceptable. Panel width shall not exceed 600 mm 2 feet to
ensure best performance for wind uplift, vibration, oil canning and visual
appearance. The following manufacturing requirements shall be met:
a. Panel shall be extruded in one single formable length.
Transverse sections are unacceptable. The panels shall be
manufactured with upstands which are integral to the unit, and the
upstands shall be 90 degrees to the panel face (standing seam dry
glazed concept). Welding or gluing of upstands or standing seam
is unacceptable.
b. Mullions shall be dry glazed profiles, using no sealant,
welding, adhesives or gaskets; mullions shall be thermally broken
and continuous for panel length.
SECTION 08600
Page 9
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