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SECTION 07430
COMPOSITE PANELS
NOTE ** This section is based on NorCore(R) plastic
honeycombed core materials, as manufactured by
Norfield Corporation, located at the following
address:
NOTE **
NOTE ** Norfield Corporation
NOTE ** 36 Kenosia Avenue
NOTE ** Danbury, CT 06810
NOTE **
NOTE ** General Information, Technical Support: 203-792-
5110
NOTE ** FAX: 203-797-0390
NOTE **
NOTE ** The Norcore product is a state-of-the-art plastic
honeycomb configured core material developed and
produced to serve as a lightweight, structurally
rigid substrate. Various surfacing materials can
be bonded to Norcore, resulting in composite panels
of superior strength, flatness, moisture
resistance, thermal resistance, shock resistance,
sound reduction, and overall durability.
NOTE **
NOTE ** SECTION 07430 - COMPOSITE PANELS, Copyright 1996,
The Architect's Catalog, Inc.
PART 1 GENERAL
1.1 SECTION INCLUDES
NOTE ** Delete items below not required for project.
NorCore panels can be surfaced with many types of
building materials including lightweight stone,
concrete, solid polymer surfacing material, brick,
glass, metals, plastic, and wood; insert surfacing
material to be used in the following paragraphs as
appropriate. Consult manufacturer to discuss
requirements of your project.
A. Exterior application of __________-surfaced composite
panels.
B. Interior application of __________-surfaced composite
panels.
C. Panel edging.
D. Concealed connection and anchorage hardware.
E. Structural adhesives and sealants.
1.2 RELATED SECTIONS
NOTE ** Delete any sections below not relevant to this
project; add others as required.
A. Section 05400 - Cold Formed Metal Framing: Structural
support for exterior composite panels.
B. Section 07620 - Sheet Metal Flashing and Trim: Flashing
for exterior composite panels.
C. Section 07900 - Joint Sealers: Sealant at panel joints
and edges.
D. Section 09260 - Gypsum Board Assemblies: Substrate for
interior composite panels.
1.3 REFERENCES
NOTE ** Delete references from the list below that are not
actually required by the text of the edited
section.
A. AAMA 501.1 - Standard Test Method for Metal Curtain Walls
for Water Penetration Using Dynamic Pressure; American
Architectural Manufacturers Association.
B. ASTM C 365 - Standard Test Method for Flatwise
Compressive Strength of Sandwich Cores.
C. ASTM C 384 - Standard Test Method for Impedance and
Absorption of Acoustical Materials by the Impedance Tube
Method.
D. ASTM C 393 - Standard Test Method for Flexural Properties
of Flat Sandwich Constructions.
E. ASTM C 518 - Standard Test Method for Steady-State Heat
Flux Measurements and Thermal Transmission Properties by
Means of the Heat Flow Meter Apparatus.
F. ASTM D 570 - Standard Test Method for Water Absorption of
Plastics.
G. ASTM D 790 - Standard Test Methods for Flexural
Properties of Plastics and Electrical Insulating
Materials.
H. D 3029 - Standard Test Method for Impact Resistance of
Flat Rigid Plastic Specimens by Means of a Tup (Falling
Weight).
I. ASTM E 84 - Standard Test Method for Surface Burning
Characteristics of Building Materials.
J. ASTM E 283 - Standard Test Method for Determining the
Rate of Air Leakage Through Exterior Windows, Curtain
Walls, and Doors Under Specified Pressure Differences
Across the Specimen.
K. ASTM E 330 - Standard Test Method for Structural
Performance of Exterior Windows, Curtain Walls, and Doors
By Uniform Static Air Pressure Difference
L. ASTM E 331 - Standard Test Method for Water Penetration
of Exterior Windows, Curtain Walls, and Doors By Uniform
Static Air Pressure Difference
M. UL 94 - Tests for Flammability of Plastic Materials for
Parts in Devices and Appliances
1.4 PERFORMANCE REQUIREMENTS
NOTE ** This article is generally applicable only to
exterior curtain wall systems. Delete the entire
article, or modify the requirements for
installations that are more or less critical.
NOTE **
NOTE ** The specific performance requirements included
below are typical examples only. Note that
different core materials, core thicknesses, and
skin materials can be used to achieve very
different performance levels. Contact manufacturer
for additional information.
A. Structural: Tested per ASTM E 330 at a design pressure
of ____ psf, with maximum deflection of L/180 and
certified to be without permanent deformation or
structural failures.
B. Air Infiltration: Not more than 0.06 cfm per square foot
of wall area, when tested at 1.57 psf per ASTM E 283.
C. Water Infiltration: No uncontrolled water penetration
under static pressure when tested per ASTM E 331 at 6.24
psf minimum for fifteen minutes.
D. Dynamic Water Penetration: No uncontrolled water
penetration when tested at ___ mph per AAMA 501.1.
E. Fire: Flame spread 10 maximum; smoke developed 195
maximum; per ASTM E 84.
F. Toxicity Evaluation: No more toxic than Douglas fir, per
University of Pittsburgh Test Method.
G. Multi-Story Fire Evaluation: Meet acceptance criteria of
UBC 17-6.
1.5 SUBMITTALS
A. Submit under provisions of Section 01300.
B. Product Data: Specifications, installation instructions,
and manufacturer's recommendations for protection and
cleaning of completed installation.
C. Shop Drawings: Show overall layout of panel system,
indicating joint locations and sizes. Include complete
details of support and attachment systems, in addition to
details for corners, panel meeting conditions, and edges.
D. Selection Samples: Color charts or actual samples
illustrating full range of available surface finishing
materials.
E. Verification Samples: 12 x 12 inch sample panels in
thickness and finish specified, including clips, anchors,
and other accessories to illustrate finished appearance
of composite panels.
F. Test Data: Submit summary of independent testing
laboratory report on results of performance tests,
indicating compliance with specified performance levels.
G. References: Submit references specified under Quality
Assurance.
1.6 QUALITY ASSURANCE
A. Manufacturer Qualifications: Company with a minimum of
five years of demonstrated capacity to produce composite
reinforced panels of the type specified in this section
and meeting the performance requirements included.
1. Company shall have completed independent laboratory
tests illustrating manufacturer's ability to provide
panels of performance levels specified herein.
2. References from five or more projects of similar size
and scope completed within the past three years.
B. Installer Qualifications: Experienced installers trained
by manufacturer of composite panels.
1.7 DELIVERY, STORAGE, AND HANDLING
A. Protection: Protect finish of panels in accordance with
instructions of panel manufacturer.
B. Delivery and Handling: Package composite panels for
protection against transportation damage. Exercise care
in unloading and storing panels to prevent bending,
warping, and surface damage.
C. Storage: Store flat under cover until project
installation begins.
1.8 WARRANTY
A. Provide manufacturer's standard warranty against defects
in the panel or delamination of panel components.
PART 2 PRODUCTS
2.1 MANUFACTURERS
A. The design is based on NorCore(R) composite panels as
manufactured by Norfield Corporation; 356 Kenosia Avenue;
Danbury, CT 06810. Telephone: 203-792-5110 for general
information and technical support; 203-797-0390.
B. Substitutions: Comply with requirements of Section
01600.
NOTE ** Delete the paragraph above or below.
C. Substitutions are not permitted.
2.2 MATERIALS
NOTE ** If performance requirements have been specified,
the first paragraph below would normally be used.
If second paragraph is used, insert core material
and thickness requirement, if appropriate - NorCore
panels are available in thicknesses from 1/4 inch
to 3 inches; obtain required performance
characteristics for specific core type and
thickness from manufacturer. In addition to the
materials listed below, others are possible.
NOTE **
NOTE ** ABS is used for its high rigidity, high impact
strength and toughness, excellent surface hardness,
and dimensional stability.
NOTE **
NOTE ** Polypropylene exhibits high chemical resistance.
NOTE **
NOTE ** Polycarbonate is UV stabilized, has excellent light
transmission, heat resistance, and self-
extinguishing properties.
NOTE **
NOTE ** High-impact polystyrene is a general purpose core
material.
A. Core Material: Honeycomb thermoplastic material
engineered by manufacturer to meet performance
requirements when laminated with specified face material.
B. Core Material: ________________ sheet expanded to form
smooth-faced honeycomb panel ___ inches thick, conforming
to the following:
1. Weight: __________ pounds per square foot, nominal.
2. Flexural strength, in accordance with ASTM C 393 and
ASTM D 790: _____________ pounds per square inch.
3. Flexural modulus, in accordance with ASTM C 393 and
ASTM D 790: _____________ pounds per square inch.
4. Compressive strength, in accordance with ASTM C 365:
_____________ pounds per square inch.
5. Water absorption, in accordance with ASTM D 570:
____ percent by weight.
6. Thermal resistance, in accordance with ASTM C 518:
_____________ pounds per square inch.
7. Sound transmission loss, in accordance with ASTM C
384: ______ decibels.
8. Impact resistance and deflection, in accordance with
ASTM D 3029: ______ inch.
9. Fire resistance, in accordance with ASTM E 84 and UL
94: _____________.
10. Wind load capacity: _____________ pounds per square
foot.
NOTE ** If panels are to have stone facing, select the
paragraph below and complete description.
C. Panel Facing: Stone veneer; __________ natural stone,
_______ color, ___ inch thick +/- ___ inch, with ________
finish.
NOTE ** If panels are to be faced with metal, select one of
the paragraphs below, complete metal facing
description, and delete the others.
D. Panel Facing: _________________, _______ inch thickness,
in finish to match Architect's sample.
E. Panel Facing: _________________, _______ inch thickness,
______________ finish.
NOTE ** Specify wall panel edging material, if required, in
one of the following two paragraphs; delete both if
not required.
F. Panel Edging Material: ______________, __________ inch
thick.
G. Pnnanel Edging Material: Same material, thickness, and
finish as face material.
2.3 ACCESSORIES
A. Connection and Anchorage Hardware: Provide all hardware
for connecting composite panels to substrate, including
kerf clips, z-clips, angle clips, and threaded inserts,
as detailed in approved shop drawings.
1. Provide hardware of sufficient size, thickness, and
strength to support panels securely against applied
loads.
2. Conceal all fasteners.
NOTE ** Delete paragraph below if not required.
B. Structural Silicone: Provide structural silicone for
support of composite panels as specified in Section
07900.
C. Joint Sealers: Provide joint sealers for panel to panel
joints and edge conditions as specified in Section 07900.
D. Adhesives: Types recommended by manufacturer for project
conditions.
2.4 FABRICATION
A. Shop fabricate composite panels by laminating face
materials to structural plastic core, producing composite
panels with performance characteristics not less than
those specified.
B. Properties of Finished Panels:
1. Overall thickness: As required to achieve structural
properties.
2. Overall thickness: ______ inches.
3. Panel size: 4 by 8 feet.
4. Panel size: 4 by 10 feet.
5. Panel size: 5 by 10 feet.
6. Panel size: As indicated on the drawings.
7. Dimensional tolerance: Plus or minus 1/16 inch in
all directions, including diagonally.
PART 3 EXECUTION
3.1 EXAMINATION
A. Verify that conditions are acceptable for installation of
composite panels before beginning the work; do not
proceed until unsatisfactory conditions have been
corrected.
3.2 INSTALLATION
A. Install composite panels in accordance with the
instructions and recommendations of the panel
manufacturer, except where more stringent requirements
are set forth in the drawings and specifications.
B. Install composite panels plumb, level, and true to line,
in accordance with approved shop drawings and with all
fasteners concealed.
C. Installation Tolerances: Maximum deviation from line or
plane: 1/8 inch in 10 feet, non-cumulative.
D. Joint Sealers: Install joint sealers in accordance with
approved shop drawing details and to comply with
requirements of Section 07900.
3.3 ADJUSTING AND CLEANING
A. Cleaning: Clean all dirt, adhesives, and joint sealer
from panels and adjacent surfaces, using detergents or
solvents as appropriate to surfaces and as approved by
the composite panel manufacturer.
B. Adjusting: Touch up minor mars and chipped surfaces to
match adjacent undamaged areas, to the approval of the
Architect. Replace damaged panels that cannot be touched
up to achieve a satisfactory appearance.
END OF SECTION