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1998-06-10
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SECTION 08842
POLYCARBONATE SHEET GLAZING (XL10)
NOTE ** GE Plastics LEXAN(R) XL10 UV-resistant
polycarbonate sheet.
NOTE **
NOTE ** This section is based products manufactured by GE
Plastics Structured Products at the following
address:
NOTE ** One Plastics Avenue
NOTE ** Pittsfield, MA 01201
NOTE ** Tel: (800) 752-7674, ext.234
NOTE ** Fax: (413) 448-5478
NOTE **
NOTE ** GE Plastics Structured Products offers a complete
line of plastic glazing products for use where
glass products cannot meet performance requirements
required.
NOTE **
NOTE ** SECTION 08842 - POLYCARBONATE SHEET GLAZING,
Copyright 1997, The Architect's Catalog, Inc.
PART 1 GENERAL
1.1 SECTION INCLUDES
NOTE ** Delete items below not required for project.
A. Plastic Glazing.
B. Accessories for installation of plastic glazing.
1.2 RELATED SECTIONS
NOTE ** Add sections relevant to this project as required.
A. Section 08800 - Glazing.
1.3 REFERENCES
NOTE ** Delete references from the list below that are not
actually required by the text of the edited
section.
A. 16 CFR 1201 - Safety Standard for Architectural Glazing
Materials.
B. ANSI Z97.1 - American National Standard for Glazing
Materials Used in Buildings.
C. ASTM C 1045 - Standard Practice for Calculating Thermal
Transmission Properties from Steady-State Heat Flux
Measurements.
D. ASTM D 635 - Standard Test Method for Rate of Burning
and/or Extent and Time of Burning of Self-Supporting
Plastics in a Horizontal Position.
E. ASTM D 648 - Standard Test Method for Deflection
Temperature of Plastics Under Flexural Load.
F. ASTM D 696 - Standard Test Method for Coefficient of
Linear Thermal Expansion.
G. ASTM D 790/ASTM D 790M - Standard Test Method for
Flexural Properties of Unreinforced and Reinforced
Plastics and Electrical Insulating Materials.
H. ASTM D 1003 - Standard Test Method for Haze and Luminous
Transmittance of Transparent Plastics.
I. ASTM D 1929 - Standard Test Method for Ignition
Properties of Plastics.
J. ASTM D 2843 - Standard Test Method for Density of Smoke
from the Burning and Decomposition of Plastics.
K. ASTM D 4065 - Standard Practice for Determining and
Reporting Dynamic Mechanical Properties of Plastics.
L. ASTM G 53 - Standard Practice for Operating Light and
Exposure Apparatus (Fluorescent UV-Condensation Type) for
Exposure of Non-Metallic Materials.
M. ISO 9002 - Quality System - Model for Quality Assurance
in Production, Installation, and Servicing.
1.4 SYSTEM DESCRIPTION
NOTE ** Edit the following paragraph for project
requirements; delete requirements that do not
apply. Delete entire paragraph if material sizes
and thicknesses are specified.
A. Design requirements for installed plastic glazing
systems:
1. Wind Resistance:
a. Positive pressure: ___ psf (___ kPa).
b. Negative pressure: ___ psf (___kPa).
2. Wind Uplift: ___ psf (___ kPa).
3. Air infiltration: ____ cubic feet per minute (cu
m/hr).
4. Water infiltration: ____ cubic feet per minute (__
cu m/hr).
B. Performance Requirements for Polycarbonate Sheet Glazing:
1. Comply with requirements of 16 CFR 1201 and ANSI
Z97.1.
2. Weather resistance, when tested in accordance with
ASTM G 53 for 3500 hours with QUV Weather Tester with
313B lamps:
a. Light transmission when tested in accordance with
ASTM D 1003: Change not to exceed 2 percent.
b. Yellowness index (0-3500): Change not to exceed
4 percent.
c. Percent haze when tested in accordance with ASTM
D 1003: Change not to exceed 10 percent.
d. Coating integrity intact after testing period.
3. Coefficient of expansion, when tested in accordance
with ASTM D 696: 0.0000375 per degree F (0.0000675
per degree C).
4. Modulus of elasticity, when tested in accordance with
ASTM D 4065: 340,000 pounds per square inch (2,344
MPa).
5. Flexural strength, when tested in accordance with
ASTM D 790: 13,500 pounds per square inch (93 MPa).
6. Flammability Class: BOCA Class C1, UBC Class CC1,
SBC Class CC1, Dade County Florida approved.
7. Deflection temperature, when tested in accordance
with ASTM D 648: 270 degrees F (132 degrees C) under
274 pounds per square inch (1.99 MPa) load.
8. Flammability, when tested in accordance with ASTM D
635: Extent of burning 1 inch (25 mm) or less.
9. Ignition temperature, when tested in accordance with
ASTM D 1929: 650 degrees F (343 degrees C) or
greater.
10. Smoke density, when tested in accordance with ASTM D
2843: 75, maximum.
11. Allowable continuous service temperature: 250
degrees F (121 degrees C).
1.5 SUBMITTALS
A. Submit under provisions of Section 01300.
B. Product Data: Manufacturer's descriptive literature for
each glazing type specified, including documentation of
code compliance; include descriptive literature for
recommended installation accessories.
NOTE ** Delete the following paragraph if colors are
specified in this section.
C. Selection Samples: Two sets of color chips representing
manufacturer's full range of available colors.
D. Verification Samples: Two samples, minimum size 6 inches
square, representing actual color and finish of products
to be installed.
E. Quality Control Submittals:
NOTE ** Delete the following sub-paragraph if no design
requirements are specified in SYSTEM DESCRIPTION
Article in this section.
1. Design Data: System analysis by manufacturer
verifying compliance of plastic glazing assemblies to
specified design requirements; include details of
glazing edge engagement, and allowance for
anticipated thermal movements.
2. Manufacturer Qualifications: Documentation of
specified manufacturer qualifications.
3. Manufacturer's Instructions: Printed installation
instructions for plastic glazing; include recommended
glazing techniques and installation accessories.
F. Operation and maintenance data: Printed instructions on
recommended cleaning and maintenance materials and
methods.
G. Warranty documents: Issued and executed by manufacturer.
1.6 QUALITY ASSURANCE
A. Manufacturer Qualifications:
1. Minimum ten (10) years experience producing plastic
glazing products.
2. Minimum five (5) completed projects on which
manufacturer has supplied plastic glazing, similar in
type and scope to this project; each completed
project to be minimum five (5) years old.
3. ISO 9002 registered.
B. Regulatory Requirements: Glazing materials to comply
with the following building code:
NOTE ** Delete any codes listed in the sub-paragraphs below
which do not apply to project.
1. BOCA Class C1.
2. ICBO Class CC1.
3. SBCCI Class CC1.
4. Dade County FL.
C. Mock-Ups: Supply materials for mock-ups required in
affected sections.
1.7 DELIVERY, STORAGE, AND HANDLING
A. Do not slide, drag, or drop polycarbonate sheet
materials.
B. Do not store polycarbonate sheet materials in areas
subject to direct UV exposure.
C. Store products of this section with manufacturer's
protective film intact.
D. Maintain storage area in accordance with plastic glazing
manufacturer's instructions until installation of
products.
1.8 WARRANTY
A. Manufacturer's Warranty: Ten (10) year warranty against
defects in materials, including breakage, discoloration,
loss of light transmission, and coating delamination.
PART 2 PRODUCTS
2.1 MANUFACTURERS
A. Acceptable Manufacturer: GE Plastics Structured
Products; One Plastics Avenue, Pittsfield, MA 01201. ASD.
Tel: (800) 752-7674, extension 8234; Fax: (413) 448-5478.
NOTE ** Delete one of the two following paragraphs;
coordinate with Division 01 requirements.
B. Requests for substitution will be considered in
accordance with provisions of Section 01600.
C. Substitutions: Not permitted.
2.2 MATERIALS
NOTE ** If more than one type of polycarbonate sheet is
required, copy the following paragraph with its sub-
paragraphs and edit each copy to suit requirements.
Give each type a unique identifier to locate the
types on the drawings.
A. Polycarbonate Sheet Glazing: LEXAN(R) XL10 translucent
thermoformable polycarbonate sheet with UV-resistant
surface treatment.
NOTE ** Obtain available thicknesses, colors, light
transmission, shading coefficients, and U-values
from manufacturer. Enter appropriate values in
blanks below.
1. Sheet thickness: ___ inch (____ mm) nominal, plus or
minus 5 percent.
2. Color: ________.
3. Light transmission: ___ percent.
4. Shading coefficient: _____.
5. Insulating value (U-value): ____ (____ metric
equivalent), as determined by calculations based on
test data, in accordance with ASHRAE procedures.
B. Accessories: Supply joint sealers and installation
accessories specified in polycarbonate sheet
manufacturer's instructions, or approved by polycarbonate
sheet manufacturer, for indicated installation
conditions.
PART 3 EXECUTION
3.1 EXAMINATION
A. Verification of Conditions:
1. Openings are in accordance with approved shop
drawings required in Section 08800 and polycarbonate
sheet manufacturer's instructions, and are plumb and
level to required tolerances.
2. Glazing channels or recesses are sized for correct
glazing edge engagement.
3.2 PREPARATION
A. Clean glazing channels or recesses free of obstructions,
soil, debris, and other materials.
B. Seal porous glazing channels or recesses with primer-
sealer compatible with substrate and polycarbonate sheet
materials.
C. Cut polycarbonate sheet materials to exact sizes
required, with clean edges free of notches; clean contact
edges with solvent compatible with polycarbonate sheet
materials, as specified or approved by polycarbonate
sheet manufacturer.
3.3 INSTALLATION
A. Install plastic glazing in accordance with polycarbonate
sheet manufacturer's instructions.
B. Do not use glazing accessories not specified or approved
by polycarbonate sheet manufacturer.
3.4 CLEANING
A. Immediately after completing construction activities
relating to installation of polycarbonate sheet
materials, remove remainder of strippable masking from
surfaces of polycarbonate sheet glazing; do not expose
masking to sunlight for an extended period of time.
B. Immediately after removing masking, clean glazing in
accordance with polycarbonate sheet manufacturer's
instructions:
1. Rinse surface with lukewarm water.
2. Wash surface with mild soap and lukewarm water.
3. Use soft cloth or sponge gently to loosen dirt and
grime; scrubbing glazing surfaces, or using squeegee
on glazing surfaces, is not permitted.
4. Repeat rinse as above, then wipe surface dry with
soft cloth until surfaces are spotless and dry.
3.5 PROTECTION OF INSTALLED PRODUCTS
A. Immediately after cleaning, cover polycarbonate sheet
glazing surfaces with polyethylene sheeting, or other
covering material approved by polycarbonate sheet
manufacturer; secure covering in place by taping to
framing members - do not tape covering to polycarbonate
sheet materials.
B. Protect installed glazing from damage to function or
finish by subsequent construction activities.
C. Repair minor damage to finishes in accordance with
polycarbonate sheet manufacturer's recommendations.
D. Replace glazing having damage to function, and glazing
having damage to finishes which cannot be repaired to
Architect's acceptance.
END OF SECTION