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SECTION 08841
POLYCARBONATE SHEET GLAZING
NOTE ** GE Plastics Structured Products LEXAN(R) MR10 UV-
resistant and abrasion-resistant polycarbonate
glazing.
NOTE **
NOTE ** This section is based on LEXAN(R) MR10 UV-resistant
and abrasion-resistant polycarbonate glazing
manufactured by GE Plastics Structured Products at
the following address:
NOTE ** One Plastics Avenue
NOTE ** Pittsfield MA 01201
NOTE ** Tel: (800) 752-7674, extension 8234
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 08841 - 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. Polycarbonate Sheet 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 D 635 - Standard Test Method for Rate of Burning
and/or Extent and Time of Burning of Self-Supporting
Plastics in a Horizontal Position.
D. ASTM D 648 - Standard Test Method for Deflection
Temperature of Plastics Under Flexural Load.
E. ASTM D 696 - Standard Test Method for Coefficient of
Linear Thermal Expansion.
F. ASTM D 790/ASTM D 790M - Standard Test Method for
Flexural Properties of Unreinforced and Reinforced
Plastics and Electrical Insulating Materials.
G. ASTM D 1003 - Standard Test Method for Haze and Luminous
Transmittance of Transparent Plastics.
H. ASTM D 1044 - Standard Test Method for Resistance of
Transparent Plastic to Surface Abrasion.
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 D 5420 - Standard Test Method for Impact Resistance
of Flat, Rigid Plastic Specimen by Means of A Striker
Impacted by A Falling Weight (Gardner Impact).
M. ASTM G 53 - Standard Practice for Operating Light and
Exposure Apparatus (Fluorescent UV-Condensation Type) for
Exposure of Non-Metallic Materials.
N. QUV 313B - Accelerated Weathering Test of Non-Metallic
Materials.
O. ISO-9002 - International Standards Organization.
1.4 SYSTEM DESCRIPTION
NOTE ** Edit the following paragraph for project
requirements; delete requirements that do not
apply. Delete entire paragraph if not applicable
to project.
A. Design requirements for installed plastic glazing
systems:
1. Windload resistance:
a. Positive pressure: ___ pounds per square foot
(__ MPa).
b. Negative pressure: ___ pounds per square foot
(__ MPa).
2. Uplift resistance: ___ pounds per square foot (__
MPa).
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:
Conforming to requirements of 16 CFR 1201, ANSI Z97.1,
and the following:
1. Weather resistance, when tested for 1500 hours in
accordance with ASTM G 53 and QUV 313B:
a. Light transmission: Change not to exceed 2
percent.
b. Yellowing intensity: Change not to exceed a
delta of 2.
c. Percent haze: Change not to exceed 3 percent.
d. Coating integrity: Intact after testing period.
2. Abrasion resistance after 500 hours QUV weathering,
when tested for 100 cycles with 500-gram CS10F wheel
in accordance with ASTM D 1044: Change in haze 5.0
percent maximum.
3. Coefficient of expansion, when tested in accordance
with ASTM D 696: .0000375 inch per inch per degree F
(0.0000675 ratio per degree C).
4. Modulus of elasticity, when tested in accordance with
ASTM D 4065: 340,000 pounds per square inch (2343.96
MPa).
5. Flexural strength, when tested in accordance with
ASTM D 790: 13,500 pounds per square inch (93.06
MPa).
6. Impact resistance, when tested in accordance with
ASTM D 5420 (Drop Dart): 200 foot-pounds (271.16 N
m) for 1/4-inch (6 mm) thick material.
7. Deflection temperature, when tested in accordance
with ASTM D 648: 270 degrees F (132.2 degrees C)
under 274 pounds per square inch (1.88 MPa) load.
8. Fire resistance rating: CC1, as determined by
governing building code.
9. Self-ignition temperature, when tested in accordance
with ASTM D 1929: Minimum 1000 degrees F (537.7
degrees C).
10. Smoke density, when tested in accordance with ASTM D
2843: Maximum 75.
11. Maximum allowable continuous service temperature:
180 degrees F (82.2 degrees C).
1.5 SUBMITTALS
A. Submit under provisions of Section 01300.
B. Product Data: Polycarbonate sheet 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
polycarbonate sheet manufacturer's full range of
available colors.
D. Verification Samples: Two samples, minimum size 6 inches
(152 mm) 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 polycarbonate sheet
manufacturer verifying compliance of polycarbonate
sheet 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 polycarbonate sheet glazing; include
storage, requirements, recommended glazing
techniques, and installation accessories.
4. Specimen warranty documents.
F. Closeout Submittals:
1. Operation and maintenance data: Printed instructions
on recommended cleaning and maintenance materials and
methods.
2. Warranty documents specified in WARRANTY Article of
PART 1 of this section.
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. Registered in accordance with ISO-9002 quality
standards.
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.
2. ICBO.
3. SBCCI.
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 polycarbonate sheet
manufacturer's protective film intact.
D. Maintain storage area in accordance with polycarbonate
sheet 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 1 requirements.
B. Requests for substitution will be considered in
accordance with provisions of Section 01600.
C. Substitutions: Not permitted.
2.2 MATERIALS
A. Plastic Glazing:
1. Acceptable product: LEXAN(R) MR10 translucent
polycarbonate sheet with UV-resistant and abrasion
resistant hardcoat surface treatment both sides.
NOTE ** Insert requirements in the following three sub-
paragraphs. Consult manufacturer's product
literature for correct values.
2. Sheet thickness: 0.___ inch (____ mm) nominal;
thickness tolerance plus or minus 5 percent.
3. Color: _______________________.
4. Light transmission: __ percent in accordance with
ASTM D 1003.
5. Thermal transmission: 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