Complete Compiled Specification.pdf - Peck Ormsby Construction

2.02 MATERIALS
a. Rout and return the Alucobond ! on all perimeters. “Continuous Edge Grip”
(CEG) is not acceptable.
b. Exposed edge of the Alucobond ! shall be protected inside an extruded
aluminum pocket.
c. Maximum overall panel thickness, including the attachment shim space, shall
not exceed 2”.
d. The Alucobond ! shall be mechanically attached to all perimeter extrusions.
The mechanical fastener must not penetrate any portion of the outer (exterior)
skin of the aluminum composite material. Attachment of the Alucobond ! to the
perimeter extrusions with structural silicone is not allowed.
e. Do not substitute sealants for dry gasketing shown at the metal panel joinery.
2. Stiffeners: Extruded aluminum sections secured to edge trim and bonded to rear face
of Alucobond ! with silicone, and of sufficient size and strength to maintain flatness of
the panel within the specified tolerances.
3. Reveals at Panel: Joint size between the faces of the perimeter extrusions shall be
1/2", nominal.
4. Flatness Criteria: Maximum 1/8" in 15'-0" on panel in any direction for assembled
units. (Non-accumulative).
A. Alucobond ! Composite Material (ACM or MCM):
1. Composite: Two sheets of aluminum sandwiching a core of extruded thermoplastic,
formed in a continuous process with no glues or adhesives between dissimilar
materials. Total composite thickness is 4mm.
2. Face Sheets: 0.020" thick .
3. Color and Coating: To be selected by the architect from the Series A and/or Series B
Alucobond ! color chart with the appropriate recommended coating, (2 coat or 3 coat).
4. Finish: The selected coating must meet the weathering performance criteria of AAMA
2605. Exterior surfaces shall be coil coated Kynar 500 ! or Hylar 5000 ! based
polyvinylidence fluoride (PVDF) resin. Other resin-based coatings are not acceptable.
In particular, the coating must have successfully passed the following tests:
a. Humidity Resistance
(1) Test Method: ASTM D-2247
(a) No formation of blisters when subjected to condensing water
fog at 100% relative humidity and 100 degrees Fahrenheit for
4,000 hours.
b. Salt Spray Resistance
(1) Test Method: ASTM B-117; expose coating system to 4,000 hours,
using 5% NaCl solution.
(a) Minimum rating of 7 on scribe or cut edges.
(b) Minimum blister rating of 8 within the test specimen field.
c. Weather Exposure
(1) Outdoor
(a) Ten (10) year exposure at 45 degree angle facing south
Florida exposure.
(b) Maximum color change of 5 Delta E units as calculated in
accordance with ASTM D-2244.
(c) Maximum chalk rating of 8 inches accordance with ASTM D-
659.
(d) No checking, crazing, adhesion loss.
5. Core: Thermoplastics
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SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION MARCH 2, 2009
COMPOSITE PANELS 07430 - 5