SPECIAL SPECIFICATION

SECTION 08950

[TRANSLUCENT SKYLIGHT SYSTEMS]{.underline}

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PART 1 - GENERAL

1.01 Description
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1.02 References
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1.03 Quality Assurance
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1.04 Submittals
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1.05 Product Handling
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PART 2 - PRODUCTS

2.01 Translucent Facing
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2.02 Non-Combustible Grid Core
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2.03 Adhesive
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2.04 Panel Construction
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2.05 Battens and Perimeter Closure Systems
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2.06 Flexible Sealing Tape
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PART 3 - EXECUTION

3.01 Preparation
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3.02 Erection
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3.03 Cleaning
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SPECIAL SPECIFICATION

SECTION 08950

[TRANSLUCENT SKYLIGHT SYSTEMS]{.underline}

PART 1 - GENERAL

1.01 [DESCRIPTION]{.underline}

A. All requirements of the contract documents form an integral part of
the work specified herein; in particular, refer to the conditions
(general or otherwise), and Division 1 of the specifications, including
all subdivisions thereof.

B. Translucent panels shall consist of 2-3/4\" thick double faced flat
sandwich panels and system including installation.

C. [Work Included]{.underline}: Supply all labor and materials required
to deliver and install the insulated translucent panel system. The
following major items are included:

1\. Translucent panels.

2\. Installation system.

D. [Related work specified elsewhere]{.underline}:

1\. Structural Steel: Division 5.

2\. Miscellaneous Metals: Division 5.

3\. Joint Sealants: Division 7.

1.02 [REFERENCES]{.underline}

A. [American National Standards Institute (ANSI)/American Architectural
Manufacturers Association (AAMA)]{.underline}

605.2

B. [American Society for Testing and Materials (ASTM)]{.underline}

A 123 Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and
Steel Products

C-236 Test Method for Steady-State Thermal Performance of Building
Assemblies by Means of a Guarded Hot Box

C-297

D-635 Test Method for Rate of Burning and/or Extent and Time of Burning
of Self-Supporting Plastics in a Horizontal Position

D-1002

D-1037 Test Methods of Evaluating the Properties of Wood-Base Fiber and
Particle Panel Materials

D-1183

D-2244 Test Method for Calculation of Color Differences from
Instrumentally Measured Color Coordinates

D-6345

E-72 Methods of Conducting Strength Tests of Panels for Building
Construction

E-84 Test Method for Surface Burning Characteristics of Building
materials

E 699 Criteria for Evaluation of Agencies Involved in Testing, Quality
Assurance, and Evaluating Building Components in Accordance with Test
Methods Promulgated by ASTM Committee E-6

1.03 [QUALITY ASSURANCE]{.underline}

A. [Manufacturer\'s and Erector\'s Qualifications]{.underline}:

1\. Panel system manufacturer must be listed by the International
Conference of Building Officials, which requires quality control
inspections by an approved agency for sandwich panel construction.

2\. Quality control inspections and 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 Uniform
Building Code or equivalent.

3\. Materials and products shall be manufactured by a company
continuously and regularly employed in the manufacture of similar
materials for a period of at least ten (10) consecutive years; and which
can show evidence of these materials being satisfactorily used on at
least six (6) projects of similar size, scope and type within such a
period. At least three (3) of the projects shall have been in successful
use for five (5) years or longer.

4\. Erection shall be by an installer which has been in the business of
erecting similar materials for at least five (5) consecutive years; and
can show evidence of satisfactory completion of projects of similar
size, scope and type.

B. [Performance Requirements]{.underline}: The manufacturer shall be
responsible for the configuration and fabrication of the complete panel
system.

C. All materials used shall not contain asbestos fibers or lead.

1.04 [SUBMITTALS]{.underline}

A. Submit shop drawings showing the total panel systems at 1/4\" =
1\'-0\" and all details of construction at full scale.

B. Test reports to be furnished by sandwich panel system manufacturer in
accordance with Division 1, Submittals. The manufacturer shall submit
certified test reports made by an independent testing organization for
each type and class of panel system. Reports shall verify that the
material will meet all performance requirements of this specification.
Previously completed test reports will be acceptable if current and
indicative of products used on this project. Test reports required are:

1\. Flame Spread and Smoke Development (ASTM E-84).

2\. Burn Extent (ASTM D-635).

3\. Color Difference (ASTM D-2244).

4\. Impact Strength (SPI Method).

5\. Bond Strength (ASTM C-297 and ASTM D-1002).

6\. Accelerated Aging (ASTM D-1037).

7\. Beam Bending Strength (ASTM E-72).

8\. Insulation \"U\" Factor (ASTM C-236).

C. Proof of regular, independent quality control monitoring by an
approved agency shall be submitted.

1\. Samples: Submit samples 12\" x 24\" (minimum) sandwich panel and a
sample of the aluminum battens and closure systems. Provide the Sandia
Delegated Representative (SDR) with 2\" x 3\" (minimum) custom color
chips on aluminum for selection by the Sandia Delegated Representative
(SDR).

1.05 [PRODUCT HANDLING]{.underline}

A. Store translucent panels on the long edge, several inches above the
ground, blocked and under cover to prevent warping.

PART 2 - MATERIALS

2.01 [TRANSLUCENT FACING]{.underline}

A. Translucent faces shall be manufactured by panel system fabricator
specially for architectural use.

B. [Flammability]{.underline}: The interior face sheet shall have a
flamespread rating no greater than 45 and smoke developed no greater
than 350 when tested in accordance with ASTM E-84. Burn extent by ASTM
D-6345 shall be no greater than 1\".

C. [Weatherability]{.underline}:

1\. The full thickness of the exterior face shall not change color more
than 3.0 Units (DELTA E by ASTM D-2244) after five (5) years outdoor
South Florida weathering at 7o facing South, determined by the average
of at least three (3) white samples without a protective film or coating
to insure maximum, long term color stability.

2\. A white face sheet shall not darken more than .2 Units (DELTA L by
ASTM D-2244) when exposed to 150oF for two (2) weeks.

3\. The exterior face shall have a permanent glass erosion barrier to
provide maximum long term resistance to surface erosion.

4\. The exterior face shall have a self-cleaning thermoset acrylic
urethane surface molecularly bonded under factory controlled conditions,
minimum 1.2 mils thick, fully field restorable if worn or damaged.

D. [Appearance]{.underline}:

1\. The faces shall be uniform in color to prevent splotchy appearance.
Faces shall be completely free of ridges and wrinkles which prevent
proper surface contact in bonding to the aluminum grid core. Clusters of
air bubbles/pinholes which collect moisture and dirt will not be
acceptable.

2\. Exterior face sheets shall be .070\" thick and crystal in color.
Interior face sheets shall be .045\" thick and white in color. Faces
shall not vary more than [+]{.underline} 10% in thickness.

E. [Strength]{.underline}: The exterior face sheet shall be uniform in
strength and repel an impact equal to 60 ft. lbs. without fracture or
tear in accordance with SPI Shatter Resistance Test.

2.02 [NON-COMBUSTIBLE GRID CORE]{.underline}

A. The aluminum I-beams shall be 6061-T6 with provisions for mechanical
interlocking of muntin-mullion and perimeter to prevent high and low
intersections which do not allow full bonding surface to contact with
face material. Width of I-beam shall be no less than 7/16\". Aluminum
I-beam for the grid shall be machined to tolerances of not greater than
[+]{.underline} .002\".

2.03 [ADHESIVE]{.underline}

A. The laminate adhesive shall be heat and pressure resin-type
engineered for structural sandwich panel use. Adhesive shall pass
testing requirements specified by the International Conference of
Building Officials \"Acceptance Criteria for Sandwich Panel Adhesive\".
Minimum strength shall be:

1\. 750 PSI tensile strength by ASTM C-297 after two (2) exposures to
six (6) cycles each of the aging conditions prescribed by ASTM D-1037.

2\. 500 PSI Shear strength average of five (5) exposures by ASTM D-1002:

a\. 50% relative humidity at 73oF.

b\. Accelerated Aging by ASTM D-1183.

c\. 182oF.

d\. Full Cycle Soak.

e\. 500 Hour Oxygen Bomb.

2.04 [PANEL CONSTRUCTION]{.underline}

A. Panels shall have a thickness of 2-3/4\" with a \"U\" factor of 0.40;
light transmission of 40% and shading coefficient of 0.62.

B. Translucent panels shall be a true sandwich panel of flat fiberglass
sheets bonded to a grid core of mechanically interlocking aluminum
I-beams and shall be laminated under a controlled process of heat and
pressure. Tape bond systems are not allowed.

C. Translucent sandwich panel deflection shall not exceed 3.5\" at 35
lbs. per sq. foot loading and shall not exceed 0.10\" set deflection
five (5) minutes after load release per ASTM E-72 with a 12\' clearspan,
tested flat.

D. All grid patterns shall be 12\" x 24\" nominal shoji and be
symmetrical about the horizontal center line of each panel with long
dimension parallel to curvature of panel.

E. The adhesive bonding line shall be straight, cover the entire width
of the I-beam and have a neat, sharp edge. In order to insure bonding
strength, white spots at intersections of muntins and mullions shall not
exceed four (4) for each forty (40) square feet of panel, nor shall they
be more than 3/64\" in width.

2.05 [BATTENS AND PERIMETER CLOSURE SYSTEMS]{.underline}

A. Extruded 6063-T6 and 6063-T5 aluminum screw clamp-tite closure
system. Thermal break perimeter system shall be factory prefabricated
with \"U\" = .50 or less. Curved closure systems shall be roll formed.

B. All battens and perimeter closures to be supplied with 300 Series
stainless steel screws (excluding final fasteners to the building).

C. All exposed aluminum to be architectural 2-coat fluorocarbon system
(high performance organic coating) equal to ANSI/AAMA 605.2. Color and
gloss to match wall panels as specified in Section \"Manufactured Roof
and Wall Panels\".

2.06 [FLEXIBLE SEALING TAPE]{.underline}

A. Sealing tape shall be manufacturer\'s standard pre-applied to closure
system at the factory under controlled conditions.

PART 3 - EXECUTION

3.01 [PREPARATION]{.underline}

A. The general contractor shall prepare openings including isolating
dissimilar materials from aluminum system which may cause damage by
electrolysis.

3.02 [ERECTION]{.underline}

A. The erector shall erect translucent panel system in strict accordance
with approved shop drawings as supplied by manufacturer. Fastening and
sealing shall be in strict accordance with manufacturer\'s shop
drawings. All aluminum shall be cleaned before sealants are applied.

B. After other trades have completed work on adjacent material,
carefully inspect translucent panel installation and make adjustments
necessary to insure proper installation and weather-tight conditions.

C. All staging, lifts and hoists required for the complete panel
installation, including staging, etc., necessary for field measuring,
shall be provided by, set up and maintained by the erection contractor.

3.03 [CLEANING]{.underline}

A. Clean the completed system, inside and out, promptly after erection
and installation of panels, allowing for nominal curing of liquid
sealants. The installer shall advise the Contractor of proper and
adequate procedures for protection and cleaning during the remainder of
the construction period so that the system will be without damage and
deterioration at the time of acceptance.

B. At the time of Substantial Completion, clean translucent skylight
system thoroughly. Demonstrate proper cleaning methods and materials to
the Owner\'s maintenance personnel.

END OF SECTION